CN104270478A - Communication implementation method of next generation wearable network - Google Patents
Communication implementation method of next generation wearable network Download PDFInfo
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- CN104270478A CN104270478A CN201410557614.XA CN201410557614A CN104270478A CN 104270478 A CN104270478 A CN 104270478A CN 201410557614 A CN201410557614 A CN 201410557614A CN 104270478 A CN104270478 A CN 104270478A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L61/00—Network arrangements, protocols or services for addressing or naming
- H04L61/50—Address allocation
- H04L61/5007—Internet protocol [IP] addresses
Abstract
The invention provides a communication implementation method of a next generation wearable network. The wearable network comprises a fixed network and a mobile network; the fixed network is composed of fixed nodes, four boundary nodes are defined and are the east boundary node, the south boundary node, the west boundary node and the north boundary node, the east boundary node is located on the boundary of the east of the fixed network, the south boundary node is located on the boundary of the south of the fixed network, the west boundary node is located on the boundary of the west of the fixed network, and the north boundary node is located on the boundary of the north of the fixed network; the fixed nodes have access to the Internet through an access router; the mobile network is composed of mobile nodes which are attached to a human body. The wearable network can be in communication with the Internet through the address configuration method, the physical parameters of a user can be transmitted to the Internet to be detected so that timely rescue can be achieved, and the method can be applied to the field of health detection of the user and other fields and has wide application prospects.
Description
Technical field
The present invention relates to a kind of Realization Method of Communication, in particular the Realization Method of Communication of the wearable network of a kind of next generation.
Background technology
Wearable wireless sense network is subject to extensive concern due to its practicality, becomes the focus of research.
Communicate between node in wearable wireless sense network and to be realized by the forwarding of intermediate node and route, each node must be furnished with the address with uniqueness and realize communication, therefore, realizing wearable radio sensing network needs one of key technology solved to be exactly Address Autoconfiguration problem.
Current address configuration is divided into has state address to configure and stateless address configuration two kinds of forms, state address allocation plan is had to adopt the communication mode allocation address of server/customer end, namely node files an application the request of address to server, then by the peer distribution address that server unification is in network.Due to wearable radio sensing network resource-constrained, be difficult to the role taking on server, therefore, have state address allocation plan cannot be applied in wearable radio sensing network.In stateless address configuration scheme, each address be assigned with needs to carry out duplicate address detection in the entire network to guarantee its uniqueness, result in a large amount of control and unwrap pin, consume a large amount of Internet resources, be not therefore also suitable for wearable radio sensing network and use.
Therefore need for wearable radio sensing network the Address Autoconfiguration scheme setting up a kind of low expense.
Summary of the invention
Goal of the invention: technical problem to be solved by this invention is for the deficiencies in the prior art, provides a kind of next generation the Realization Method of Communication of wearable network.
Technical scheme: the Realization Method of Communication that the invention discloses the wearable network of a kind of next generation, the Realization Method of Communication of the wearable network of a kind of next generation, is characterized in that, described wearable network comprises fixed network and mobile network; Fixed network is made up of stationary nodes, and define four boundary nodes, be called eastern boundary node, south bound node, western boundary node and northern boundary node, eastern boundary node is positioned at described fixed network boundary in the east, and south bound node is positioned at the boundary in described fixed network south, western boundary node is positioned at the boundary in described fixed network west, and northern boundary node is positioned at the boundary on the described fixed network north; Stationary nodes is linked into the Internet by couple in router; Mobile network is made up of mobile node, and mobile node invests on the health of people, as tied up on the person by bandage;
Fixed network elects eastern boundary node, south bound node, western boundary node and northern boundary node, eastern boundary node, south bound node, western boundary node and north circle node broadcasts beacon frame after starting; Stationary nodes in network determines the four-tuple coordinate of oneself according to the beacon frame received, and namely arrives the jumping figure of eastern boundary node, arrives the jumping figure of south bound node, arrives the jumping figure of western boundary node, arrive the jumping figure of northern boundary node; Wherein, the jumping figure that eastern boundary node arrives eastern boundary node is 0, and the jumping figure that south bound node arrives south bound node is 0, and the jumping figure that western boundary node arrives western boundary node is 0, and the jumping figure that northern boundary node arrives northern boundary node is 0; The load of the beacon frame of boundary node broadcast is the four-tuple coordinate of oneself, and stationary nodes by judging that the boundary node of this informed source is determined in the load of the beacon frame that boundary node is broadcasted, and calculates the jumping figure arriving this boundary node;
An address of node is made up of four parts, and Part I is the network prefix of i bit, and the network prefix of the address obtained from same wearable network is all identical, its unique identification wearable network; Part II is four-tuple coordinate, and each element in four-tuple coordinate is represented by j bit; Part III is the node ID of k bit, for distinguishing the stationary nodes in a wearable network with identical four-tuple coordinate; Part IV is the mobile node ID of m bit, for identifying the mobile node in a mobile network; Four-tuple coordinate, node ID and mobile node ID form link address; I, j, k, m are positive integer;
The network prefix of couple in router periodic broadcasting oneself, stationary nodes obtains network prefix by the broadcast intercepting couple in router;
The four-tuple coordinate of couple in router and node ID are 0, and mobile node ID is non-zero integer; The mobile node ID of stationary nodes is 0;
After fixed network starts, each stationary nodes obtains network prefix, and builds temporary link address with hardware ID (such as MAC Address); Before a stationary nodes obtains address, by its temporary link address unique identification; Stationary nodes is broadcast beacon frame within the scope of a jumping regularly, and beacon frame source address is its temporary link address; Stationary nodes adopts existing location technology (such as AoA algorithm) to obtain the relative angle with this neighbours' stationary nodes by the beacon frame receiving neighbours' stationary nodes, and judges whether oneself is boundary node according to following method:
1) if the relative angle of stationary nodes X neighbours stationary nodes all with it all interval (270 °, 360 °] or (0 °, 90 °], so oneself is then labeled as western boundary node by stationary nodes X;
2) if the relative angle of stationary nodes X neighbours stationary nodes all with it all interval (180 °, 360 °], so oneself is then labeled as northern boundary node by stationary nodes X;
3) if the relative angle of stationary nodes X neighbours stationary nodes all with it all interval (90 °, 270 °], so oneself is then labeled as eastern boundary node by stationary nodes X;
4) if the relative angle of stationary nodes X neighbours stationary nodes all with it all interval (0 °, 180 °], so oneself is then labeled as south bound node by stationary nodes X;
If fixed network produces the boundary node more than 4 in said process, then adopt 4 boundary nodes final in following method determination fixed network;
Each node oneself being labeled as western boundary node builds four-tuple coordinate, wherein, the coordinate arriving the distance of western boundary node corresponding is 0, the coordinate arriving the distance of other boundary nodes corresponding is non-zero, the four-tuple coordinate of such as western boundary node is (1,1,0,1), then in fixed network, broadcast a beacon frame, beacon frame source address is oneself temporary link address, beacon frame load is oneself interim four-tuple coordinate and jumping figure parameter, the initial value of jumping figure parameter is 0, and be often forwarded once, its value increases progressively 1; After the western boundary node of another one receives this beacon frame, contrast the temporary link address of oneself and the source address of the beacon frame received, if the source address of oneself is larger, then delete the west circle node identities mark of oneself, the minimum western boundary node in final link address becomes western boundary node unique in network;
Each node oneself being labeled as eastern boundary node builds four-tuple coordinate, wherein, the coordinate arriving the distance of eastern boundary node corresponding is 0, the coordinate arriving the distance of other boundary nodes corresponding is non-zero, the four-tuple coordinate of such as eastern boundary node is (0,1,1,1), then in fixed network, broadcast a beacon frame, beacon frame source address is oneself temporary link address, beacon frame load is oneself interim four-tuple coordinate and jumping figure parameter, the initial value of jumping figure parameter is 0, and be often forwarded once, its value increases progressively 1; After another one east boundary node receives this beacon frame, contrast the temporary link address of oneself and the source address of the beacon frame received, if the source address of oneself is larger, then delete the east circle node identities mark of oneself, the minimum eastern boundary node in final link address becomes eastern boundary node unique in network;
Each node oneself being labeled as south bound node builds four-tuple coordinate, wherein, the coordinate that the distance of arrival south bound node is corresponding is 0, the coordinate arriving the distance of other boundary nodes corresponding is non-zero, the four-tuple coordinate of such as south bound node is (1,0,1,1), then in fixed network, broadcast a beacon frame, beacon frame source address is oneself temporary link address, beacon frame load is interim four-tuple coordinate and jumping figure parameter, the initial value of jumping figure parameter is 0, and be often forwarded once, its value increases progressively 1; After another one south bound node receives this beacon frame, contrast the temporary link address of oneself and the source address of the beacon frame received, if the source address of oneself is larger, then delete the south bound node identities mark of oneself, the south bound node finally only having link address minimum becomes south bound node unique in network;
Each node oneself being labeled as northern boundary node builds four-tuple coordinate, wherein, the coordinate arriving the distance of northern boundary node corresponding is 0, the coordinate arriving the distance of other boundary nodes corresponding is non-zero, the four-tuple coordinate of such as northern boundary node is (1,1,1,0), then in fixed network, broadcast a beacon frame, beacon frame source address is oneself temporary link address, beacon frame load is interim four-tuple coordinate and jumping figure parameter, the initial value of jumping figure parameter is 0, and be often forwarded once, its value increases progressively 1; After another one north boundary node receives this beacon frame, contrast the temporary link address of oneself and the source address of the beacon frame received, if the source address of oneself is larger, then delete the north circle node identities mark of oneself, the northern boundary node finally only having link address minimum becomes northern boundary node unique in network;
After stationary nodes in fixed network receives the beacon frame of boundary node broadcast, judge it is eastern boundary node according to the interim four-tuple coordinate in beacon frame, south bound node, western boundary node or northern boundary node, record simultaneously and arrive the minimum eastern boundary node in temporary link address, south bound node, the jumping figure value of western boundary node or northern boundary node, and the four-tuple coordinate setting up oneself;
After stationary nodes Z1 obtains four-tuple coordinate, be combined with network prefix and form IPv6 address, wherein node ID is set to 0, then broadcast beacon frame within the scope of a jumping, and beacon frame source address is the link address of configuration;
Neighbours' stationary nodes of stationary nodes Z1 has uniqueness node ID by following Procedure Acquisition:
After neighbours' stationary nodes of stationary nodes Z1 receives this beacon frame, if the four-tuple coordinate of neighbours' stationary nodes equals the four-tuple coordinate of beacon frame source address, so neighbours' stationary nodes performs assign operation q=q+1, q is the node ID value of source address, then the node ID of oneself is set to q, broadcast beacon frame;
Neighbours' stationary nodes that the neighbours' stationary nodes receiving beacon frame repeats above-mentioned stationary nodes Z1 obtains the process with uniqueness node ID, until stationary nodes Z1 receives the beacon frame of all neighbours' stationary nodes.
Because the node ID of the stationary nodes in a network with identical four-tuple coordinate is all different, the therefore IPv6 address address uniqueness in a network of each stationary nodes, thus ensure that the correctness of communication.
In the method for the invention, mobile network depends on the health of people, and in mobile network, all mobile nodes are neighbor node;
After stationary nodes obtains address, the beacon frame load of broadcast is network prefix, and the mobile node in mobile network obtains place network of network prefix by the beacon frame of intercepting stationary nodes;
After mobile network starts, all mobile nodes adopt MAC Address to build temporary link address and broadcast beacon frame, because in a mobile network, all mobile nodes are all neighbor nodes, all mobile nodes are according to random sequence serial broadcast beacon frame, the sequence number u of each mobile node record oneself first time broadcast beacon frame, wherein the mobile node of first broadcast beacon frame is called the first node of mobile network;
The number of nodes n that first node is comprised by the beacon frame acquisition mobile node of intercepting the mobile node in mobile network, then applies for n mobile node ID to nearest stationary nodes F, comprises the steps:
Step 101: start;
Step 102: first node sends Address requests command frame to stationary nodes F, the temporary link address of node headed by Address requests command frame source address, and load is variable n;
After step 103: stationary nodes F receives Address requests command frame, select one section of unappropriated mobile node ID space [L, L+n-1], L is positive integer, then to first node return address response command frame, the load of address response command frame is positive integer L, is then labeled as in mobile node ID space [L, L+n-1] and distributes;
Step 104: after first node receives address response command frame, using the mobile node ID of positive integer L as oneself, and the formation home address that combines with the network prefix of stationary nodes F, four-tuple coordinate and node ID, and broadcast beacon frame, beacon frame load is positive integer L, and source address is the link address after configuration;
Step 105: after the mobile node in mobile network receives beacon frame, using the mobile node ID of positive integer L+u-1 as oneself, then combine with the four-tuple coordinate of the network prefix listened to and first node and node ID formation home IP Address;
Step 106: terminate.
Said process, first node is disposable to be obtained address and ensure that address uniqueness for the multiple nodes in mobile network, therefore ensure that the correctness of communication, also reduces address configuration and postpone.
In the method for the invention, when after stationary nodes configuration address, the jumping figure maximum E that the beacon frame load of broadcast comprises network prefix, stationary nodes arrives eastern boundary node
max, arrive the jumping figure maximum S of south bound node
max, arrive the jumping figure maximum W of western boundary node
max, arrive the jumping figure maximum N of northern boundary point node
max,, and the maximum ID of node ID
max; S
max, W
max, N
max,, N
max,and ID
maxinitial value be respectively the jumping figure value of the arrival east boundary node of stationary nodes oneself, arrive the jumping figure value of south bound node, arrive the jumping figure value of western boundary node, arrive the jumping figure value of northern boundary node, and the node ID of oneself;
When the stationary nodes in network receives after the beacon frame of neighbours' stationary nodes broadcast, contrast the S oneself preserved
max, W
max, N
max,, N
max,and ID
maxwith the S in beacon frame load
max, W
max, N
max,, N
max,and ID
maxif have at least a variable larger in beacon frame, i.e. S
maxor W
maxor N
max,or N
max,or ID
max, then upgrade oneself less variable with relevant variable larger in beacon frame, repeat said process, final stationary nodes can obtain the S of fixed network
max, W
max, N
max,, N
max,and ID
max;
After first node in mobile network receives the network prefix of neighbours' stationary nodes, if detect that this network prefix is different from the network prefix of oneself, then judge that movement of mobile network is in another fixed network, now first node carries out following care-of address configuration:
Step 201: start;
Step 202: first node produces one at random and is greater than E
maxvalue e, be greater than S
maxvalue s, be greater than W
maxvalue w, be greater than N
maxvalue n, be greater than ID
maxvalue d, then broadcast beacon frame in mobile network, beacon load is the random e produced, s, w, n and d, build the Care-of Address of oneself, wherein, network prefix is the network prefix of stationary nodes F simultaneously, the jumping figure arriving eastern boundary node in four-tuple coordinate is set to e, the jumping figure arriving south bound node is set to s, and the jumping figure arriving western boundary node is set to w, and the jumping figure arriving northern boundary node is set to n, node ID is set to d, and mobile node ID equals the mobile node ID in home address;
Step 203: after the mobile node in mobile network receives beacon frame, build the Care-of Address of oneself, wherein, network prefix is the network prefix of stationary nodes F, the jumping figure arriving eastern boundary node in four-tuple coordinate is set to the e in beacon frame load, the jumping figure of arrival south bound node is set to the s in beacon frame load, the jumping figure arriving western boundary node is set to the w in beacon frame load, the jumping figure arriving northern boundary node is set to the n in beacon frame load, node ID is set to the d in beacon frame load, mobile node ID equals the mobile node ID in home address,
Step 204: care-of address configuration terminates.
By said process, first node is disposable to be obtained Care-of Address and ensure that the uniqueness of Care-of Address for the multiple nodes in mobile network, therefore ensure that correctness and the continuity of communication, also reduces care-of address configuration and postpone.
In the method for the invention, after the first node of described mobile network carries out care-of address configuration, carry out following address binding operations:
Step 301: start;
Step 302: first node sends address binding message to local couple in router, the Care-of Address of the new configuration of node headed by the source address of address binding message, address binding Message Payload is the node total number n that comprises in mobile network and the home address of oneself;
Step 303: after local couple in router receives address binding message, Care-of Address corresponding for the home address of first address is updated to the source address of address binding message, then proceed as follows for the mobile node of eligible 1: the Care-of Address building the mobile node of eligible 1, wherein, the overall route prefix of this Care-of Address, the overall route prefix of four-tuple coordinate and node ID and address binding Message Source Address, four-tuple coordinate and node ID identical, mobile node ID equals the mobile node ID of the home address of this node, then the Care-of Address of this mobile node is updated to the new Care-of Address built,
Condition 1: the overall route prefix of the overall route prefix of the home address of this mobile node, four-tuple coordinate and node ID and the home address of first node, four-tuple coordinate and node ID are identical, and the scope of mobile node ID is at interval [L1, L1+n-1] in scope, wherein, the mobile node ID of node headed by L1;
Step 304: terminate.
By said process, first node is disposable has carried out address binding operations for the multiple nodes in mobile network, thus ensure that correctness and the continuity of communication, also reduces Care-of Address binding and postpones.
In the method for the invention, if the mobile node X1 in mobile network B1 is identical with the Care-of Address of the mobile node X2 in mobile network B2, so the communication process of mobile node X1 and internet node N1 is:
Step 401: start;
Step 402: mobile node X1 sends data request information to internet node N1;
Step 403: after internet node N1 receives data request information, to mobile node X1 return data response message;
Step 404: the route of data response message is divided into following three kinds of situations to process respectively:
Situation 1: data response message is routed to mobile node X1 and mobile node X2: mobile node X1 simultaneously and receives the laggard row relax of data response message, after mobile node X2 receives data response message, because it does not send data request information to internet node N1, therefore directly abandon, mobile node X2 sends address conflict message to the first node in mobile network B2 simultaneously, after first node in mobile network B2 receives address conflict message, perform step 201 and reconfigure Care-of Address to step 204, then perform step 301 and re-start address binding to step 304,
Situation 2: data response message is only routed to mobile node X1: mobile node X1 receives the laggard row relax of data response message;
Situation 3: data response message is only routed to mobile node X2: after mobile node X2 receives data response message, because it does not send data request information to internet node N1, therefore directly abandon, mobile node X2 sends address conflict message to the first node in mobile network B2 simultaneously, after first node in mobile network B2 receives address conflict message, perform step 201 and reconfigure Care-of Address to step 204, then perform step 301 and re-start address binding to step 304, mobile node X1 is owing to confiscating the data response message of internet node N1, therefore repeat to send data request information to internet node N1,
Step 405: terminate;
The communication process of internet node N1 and mobile node X1 is:
Step 501: start;
Step 502: internet node N1 sends data request information to mobile node X1, and data request information destination address is the home address of mobile node X1;
Step 503: first this data request information arrives the local couple in router AR1 of mobile node X1, then couple in router AR1 in local is according to the Care-of Address of the mobile node X1 of record, increase a tunnel header in data request information, the destination address of tunnel header is the Care-of Address of mobile node X1;
Step 504: the route with the data request information of tunnel header is divided into following three kinds of situations to process respectively:
Situation 1: the data request information with tunnel header is routed to mobile node X1 and mobile node X2 simultaneously: after mobile node X1 receives the data request information with tunnel header, first remove tunnel header and check the destination address of data request information, judge that destination address is oneself home address, mobile node X1 carries out processing and to internet node N1 return data response message, after mobile node X2 receives the data request information with tunnel header, first remove tunnel header and check the destination address of data request information, judge that the destination address of data request information is not oneself home address, directly abandon described data request information, it sends address conflict message to the first node in mobile network B2 simultaneously, after first node in mobile network B2 receives address conflict message, perform step 201 and reconfigure Care-of Address to step 204, then perform step 301 and re-start address binding to step 304,
Situation 2: the data request information with tunnel header is only routed to mobile node X1: after mobile node X1 receives the data request information with tunnel header, first remove tunnel header and check the destination address of data request information, judge that destination address is oneself home address, mobile node X1 carries out processing and to internet node N1 return data response message;
Situation 3: the data request information with tunnel header is only routed to mobile node X2: after mobile node X2 receives the data request information with tunnel header, first remove tunnel header and check the destination address of data request information, judge that the destination address of data request information is not oneself home address, directly abandon described data request information, it sends address conflict message to the first node in mobile network B2 simultaneously, after first node in mobile network B2 receives address conflict message, perform step 201 and reconfigure Care-of Address to step 204, then perform step 301 and re-start address binding to step 304, internet node N1 is owing to confiscating the data response message of mobile node X1, therefore repeat to send data request information to mobile node X1,
Step 505: terminate.
Said process achieves correctness and the continuity of communication.
Beneficial effect: the Realization Method of Communication that the invention provides the wearable network of a kind of next generation, described wearable network is by address configuration method provided by the present invention, the communication with the Internet can be realized, the physical parameter of user can be sent to the Internet carry out detecting thus realize rescuing in real time, the present invention can be applicable to the fields such as the health detection of user, is with a wide range of applications.
Accompanying drawing explanation
To do the present invention below in conjunction with the drawings and specific embodiments and further illustrate, above-mentioned and/or otherwise advantage of the present invention will become apparent.
Fig. 1 is wearable network topology structure schematic diagram of the present invention.
Fig. 2 is node address structural representation of the present invention.
Fig. 3 is mobile network's home address configuration flow schematic diagram of the present invention.
Fig. 4 is mobile network's care-of address configuration schematic flow sheet of the present invention.
Fig. 5 is address binding schematic flow sheet of the present invention.
Fig. 6 is the communication process schematic diagram that mobile node of the present invention is initiated.
Fig. 7 is the communication process schematic diagram that internet node of the present invention is initiated.
Embodiment:
The invention provides the Realization Method of Communication of the wearable network of a kind of next generation, described wearable network is by address configuration method provided by the present invention, the communication with the Internet can be realized, the physical parameter of user can be sent to the Internet carry out detecting thus realize rescuing in real time, the present invention can be applicable to the fields such as the health detection of user, is with a wide range of applications.
Fig. 1 is wearable network topology structure schematic diagram of the present invention.Described wearable network comprises fixed network 1 and mobile network 2; Fixed network 1 is made up of stationary nodes 3, and define four boundary nodes, be called eastern boundary node, south bound node, western boundary node and northern boundary node, eastern boundary node is positioned at described fixed network 1 boundary in the east, and south bound node is positioned at the boundary in described fixed network 1 south, western boundary node is positioned at the boundary in described fixed network 1 west, and northern boundary node is positioned at the boundary on described fixed network 1 north; Stationary nodes 3 is linked into the Internet 5 by couple in router 4; Mobile network 2 is made up of mobile node 6, and mobile node 6 invests on the health of people, as tied up on the person by bandage.
Fig. 2 is node address structural representation of the present invention.An address of node is made up of four parts, and Part I is the network prefix of i bit, and the network prefix of the address obtained from same wearable network is all identical, its unique identification wearable network; Part II is four-tuple coordinate, and each element in four-tuple coordinate is represented by j bit; Part III is the node ID of k bit, for distinguishing the stationary nodes in a wearable network with identical four-tuple coordinate; Part IV is the mobile node ID of m bit, for identifying the mobile node in a mobile network; Four-tuple coordinate, node ID and mobile node ID form link address; I, j, k, m are positive integer.
Fig. 3 is mobile network's home address configuration flow schematic diagram of the present invention.Mobile network depends on the health of people, and in mobile network, all mobile nodes are neighbor node;
After stationary nodes obtains address, the beacon frame load of broadcast is network prefix, and the mobile node in mobile network obtains place network of network prefix by the beacon frame of intercepting stationary nodes;
After mobile network starts, all mobile nodes adopt MAC Address to build temporary link address and broadcast beacon frame, because in a mobile network, all mobile nodes are all neighbor nodes, all mobile nodes are according to random sequence serial broadcast beacon frame, the sequence number u of each mobile node record oneself first time broadcast beacon frame, wherein the mobile node of first broadcast beacon frame is called the first node of mobile network;
The number of nodes n that first node is comprised by the beacon frame acquisition mobile node of intercepting the mobile node in mobile network, then applies for n mobile node ID to nearest stationary nodes F, comprises the steps:
Step 101: start;
Step 102: first node sends Address requests command frame to stationary nodes F, the temporary link address of node headed by Address requests command frame source address, and load is variable n;
After step 103: stationary nodes F receives Address requests command frame, select one section of unappropriated mobile node ID space [L, L+n-1], L is positive integer, then to first node return address response command frame, the load of address response command frame is positive integer L, is then labeled as in mobile node ID space [L, L+n-1] and distributes;
Step 104: after first node receives address response command frame, using the mobile node ID of positive integer L as oneself, and the formation home address that combines with the network prefix of stationary nodes F, four-tuple coordinate and node ID, and broadcast beacon frame, beacon frame load is positive integer L, and source address is the link address after configuration;
Step 105: after the mobile node in mobile network receives beacon frame, using the mobile node ID of positive integer L+u-1 as oneself, then combine with the four-tuple coordinate of the network prefix listened to and first node and node ID formation home IP Address;
Step 106: terminate.
Said process, first node is disposable to be obtained address and ensure that address uniqueness for the multiple nodes in mobile network, therefore ensure that the correctness of communication, also reduces address configuration and postpone.
Fig. 4 is mobile network's care-of address configuration schematic flow sheet of the present invention.When after stationary nodes configuration address, the jumping figure maximum E that the beacon frame load of broadcast comprises network prefix, stationary nodes arrives eastern boundary node
max, arrive the jumping figure maximum S of south bound node
max, arrive the jumping figure maximum W of western boundary node
max, arrive the jumping figure maximum N of northern boundary point node
max,, and the maximum ID of node ID
max; S
max, W
max, N
max,, N
max,and ID
maxinitial value be respectively the jumping figure value of the arrival east boundary node of stationary nodes oneself, arrive the jumping figure value of south bound node, arrive the jumping figure value of western boundary node, arrive the jumping figure value of northern boundary node, and the node ID of oneself;
When the stationary nodes in network receives after the beacon frame of neighbours' stationary nodes broadcast, contrast the S oneself preserved
max, W
max, N
max,, N
max,and ID
maxwith the S in beacon frame load
max, W
max, N
max,, N
max,and ID
maxif have at least a variable larger in beacon frame, i.e. S
maxor W
maxor N
max,or N
max,or ID
max, then upgrade oneself less variable with relevant variable larger in beacon frame, repeat said process, final stationary nodes can obtain the S of fixed network
max, W
max, N
max,, N
max,and ID
max;
After first node in mobile network receives the network prefix of neighbours' stationary nodes, if detect that this network prefix is different from the network prefix of oneself, then judge that movement of mobile network is in another fixed network, now first node carries out following care-of address configuration:
Step 201: start;
Step 202: first node produces one at random and is greater than E
maxvalue e, be greater than S
maxvalue s, be greater than W
maxvalue w, be greater than N
maxvalue n, be greater than ID
maxvalue d, then broadcast beacon frame in mobile network, beacon load is the random e produced, s, w, n and d, build the Care-of Address of oneself, wherein, network prefix is the network prefix of stationary nodes F simultaneously, the jumping figure arriving eastern boundary node in four-tuple coordinate is set to e, the jumping figure arriving south bound node is set to s, and the jumping figure arriving western boundary node is set to w, and the jumping figure arriving northern boundary node is set to n, node ID is set to d, and mobile node ID equals the mobile node ID in home address;
Step 203: after the mobile node in mobile network receives beacon frame, build the Care-of Address of oneself, wherein, network prefix is the network prefix of stationary nodes F, the jumping figure arriving eastern boundary node in four-tuple coordinate is set to the e in beacon frame load, the jumping figure of arrival south bound node is set to the s in beacon frame load, the jumping figure arriving western boundary node is set to the w in beacon frame load, the jumping figure arriving northern boundary node is set to the n in beacon frame load, node ID is set to the d in beacon frame load, mobile node ID equals the mobile node ID in home address,
Step 204: care-of address configuration terminates.
By said process, first node is disposable to be obtained Care-of Address and ensure that the uniqueness of Care-of Address for the multiple nodes in mobile network, therefore ensure that correctness and the continuity of communication, also reduces care-of address configuration and postpone.
Fig. 5 is address binding schematic flow sheet of the present invention.After the first node of described mobile network carries out care-of address configuration, carry out following address binding operations:
Step 301: start;
Step 302: first node sends address binding message to local couple in router, the Care-of Address of the new configuration of node headed by the source address of address binding message, address binding Message Payload is the node total number n that comprises in mobile network and the home address of oneself;
Step 303: after local couple in router receives address binding message, Care-of Address corresponding for the home address of first address is updated to the source address of address binding message, then proceed as follows for the mobile node of eligible 1: the Care-of Address building the mobile node of eligible 1, wherein, the overall route prefix of this Care-of Address, the overall route prefix of four-tuple coordinate and node ID and address binding Message Source Address, four-tuple coordinate and node ID identical, mobile node ID equals the mobile node ID of the home address of this node, then the Care-of Address of this mobile node is updated to the new Care-of Address built,
Condition 1: the overall route prefix of the overall route prefix of the home address of this mobile node, four-tuple coordinate and node ID and the home address of first node, four-tuple coordinate and node ID are identical, and the scope of mobile node ID is at interval [L1, L1+n-1] in scope, wherein, the mobile node ID of node headed by L1;
Step 304: terminate.
By said process, first node is disposable has carried out address binding operations for the multiple nodes in mobile network, thus ensure that correctness and the continuity of communication, also reduces Care-of Address binding and postpones.
Fig. 6 is the communication process schematic diagram that mobile node of the present invention is initiated.If the mobile node X1 in mobile network B1 is identical with the Care-of Address of the mobile node X2 in mobile network B2, so the communication process of mobile node X1 and internet node N1 is:
Step 401: start;
Step 402: mobile node X1 sends data request information to internet node N1;
Step 403: after internet node N1 receives data request information, to mobile node X1 return data response message;
Step 404: the route of data response message is divided into following three kinds of situations to process respectively:
Situation 1: data response message is routed to mobile node X1 and mobile node X2: mobile node X1 simultaneously and receives the laggard row relax of data response message, after mobile node X2 receives data response message, because it does not send data request information to internet node N1, therefore directly abandon, mobile node X2 sends address conflict message to the first node in mobile network B2 simultaneously, after first node in mobile network B2 receives address conflict message, perform step 201 and reconfigure Care-of Address to step 204, then perform step 301 and re-start address binding to step 304,
Situation 2: data response message is only routed to mobile node X1: mobile node X1 receives the laggard row relax of data response message;
Situation 3: data response message is only routed to mobile node X2: after mobile node X2 receives data response message, because it does not send data request information to internet node N1, therefore directly abandon, mobile node X2 sends address conflict message to the first node in mobile network B2 simultaneously, after first node in mobile network B2 receives address conflict message, perform step 201 and reconfigure Care-of Address to step 204, then perform step 301 and re-start address binding to step 304, mobile node X1 is owing to confiscating the data response message of internet node N1, therefore repeat to send data request information to internet node N1,
Step 405: terminate.
Fig. 7 is the communication process schematic diagram that internet node of the present invention is initiated.The communication process of internet node N1 and mobile node X1 is:
Step 501: start;
Step 502: internet node N1 sends data request information to mobile node X1, and data request information destination address is the home address of mobile node X1;
Step 503: first this data request information arrives the local couple in router AR1 of mobile node X1, then couple in router AR1 in local is according to the Care-of Address of the mobile node X1 of record, increase a tunnel header in data request information, the destination address of tunnel header is the Care-of Address of mobile node X1;
Step 504: the route with the data request information of tunnel header is divided into following three kinds of situations to process respectively:
Situation 1: the data request information with tunnel header is routed to mobile node X1 and mobile node X2 simultaneously: after mobile node X1 receives the data request information with tunnel header, first remove tunnel header and check the destination address of data request information, judge that destination address is oneself home address, mobile node X1 carries out processing and to internet node N1 return data response message, after mobile node X2 receives the data request information with tunnel header, first remove tunnel header and check the destination address of data request information, judge that the destination address of data request information is not oneself home address, directly abandon described data request information, it sends address conflict message to the first node in mobile network B2 simultaneously, after first node in mobile network B2 receives address conflict message, perform step 201 and reconfigure Care-of Address to step 204, then perform step 301 and re-start address binding to step 304,
Situation 2: the data request information with tunnel header is only routed to mobile node X1: after mobile node X1 receives the data request information with tunnel header, first remove tunnel header and check the destination address of data request information, judge that destination address is oneself home address, mobile node X1 carries out processing and to internet node N1 return data response message;
Situation 3: the data request information with tunnel header is only routed to mobile node X2: after mobile node X2 receives the data request information with tunnel header, first remove tunnel header and check the destination address of data request information, judge that the destination address of data request information is not oneself home address, directly abandon described data request information, it sends address conflict message to the first node in mobile network B2 simultaneously, after first node in mobile network B2 receives address conflict message, perform step 201 and reconfigure Care-of Address to step 204, then perform step 301 and re-start address binding to step 304, internet node N1 is owing to confiscating the data response message of mobile node X1, therefore repeat to send data request information to mobile node X1,
Step 505: terminate.
Said process achieves correctness and the continuity of communication.
In sum, the Realization Method of Communication of the wearable network of the next generation provided by the invention, technique can be applied to the numerous areas such as medical treatment & health, the physical parameter of user can be sent to the Internet and carries out detecting thus realize rescuing in real time, therefore, this technology has very high promotional value.
The invention provides the thinking of the Realization Method of Communication of the wearable network of a kind of next generation; the method and access of this technical scheme of specific implementation is a lot; the above is only the preferred embodiment of the present invention; should be understood that; for those skilled in the art; under the premise without departing from the principles of the invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.The all available prior art of each component part not clear and definite in the present embodiment is realized.
Embodiment 1
Based on the simulation parameter of table 1, the present embodiment simulates the address configuration implementation method in the present invention, performance evaluation is as follows: when fixed network number of nodes and transmission radius are constant, the delay of quantity to home address and care-of address configuration of mobile node does not respond, and care-of address configuration postpones to be less than home address reconfiguration latency, the average retardation of home address configuration is 25ms, and care-of address configuration postpones for 10ms.
Table 1 simulation parameter
Claims (5)
1. a Realization Method of Communication for the wearable network of the next generation, is characterized in that, described wearable network comprises fixed network and mobile network; Fixed network is made up of stationary nodes, and define four boundary nodes, be called eastern boundary node, south bound node, western boundary node and northern boundary node, eastern boundary node is positioned at described fixed network boundary in the east, and south bound node is positioned at the boundary in described fixed network south, western boundary node is positioned at the boundary in described fixed network west, and northern boundary node is positioned at the boundary on the described fixed network north; Stationary nodes is linked into the Internet by couple in router; Mobile network is made up of mobile node, and mobile node invests on the health of people;
Fixed network elects eastern boundary node, south bound node, western boundary node and northern boundary node, eastern boundary node, south bound node, western boundary node and north circle node broadcasts beacon frame after starting; Stationary nodes in network determines the four-tuple coordinate of oneself according to the beacon frame received, and namely arrives the jumping figure of eastern boundary node, arrives the jumping figure of south bound node, arrives the jumping figure of western boundary node, arrive the jumping figure of northern boundary node; Wherein, the jumping figure that eastern boundary node arrives eastern boundary node is 0, and the jumping figure that south bound node arrives south bound node is 0, and the jumping figure that western boundary node arrives western boundary node is 0, and the jumping figure that northern boundary node arrives northern boundary node is 0; The load of the beacon frame of boundary node broadcast is the four-tuple coordinate of oneself, and stationary nodes by judging that the boundary node of this informed source is determined in the load of the beacon frame that boundary node is broadcasted, and calculates the jumping figure arriving this boundary node;
An address of node is made up of four parts, and Part I is the network prefix of i bit, and the network prefix of the address obtained from same wearable network is all identical, its unique identification wearable network; Part II is four-tuple coordinate, and each element in four-tuple coordinate is represented by j bit; Part III is the node ID of k bit, for distinguishing the stationary nodes in a wearable network with identical four-tuple coordinate; Part IV is the mobile node ID of m bit, for identifying the mobile node in a mobile network; Four-tuple coordinate, node ID and mobile node ID form link address; I, j, k, m are positive integer;
The network prefix of couple in router periodic broadcasting oneself, stationary nodes obtains network prefix by the broadcast intercepting couple in router;
The four-tuple coordinate of couple in router and node ID are 0, and mobile node ID is non-zero integer; The mobile node ID of stationary nodes is 0;
After fixed network starts, each stationary nodes obtains network prefix, and builds temporary link address with hardware ID; Before a stationary nodes obtains address, by its temporary link address unique identification; Stationary nodes is broadcast beacon frame within the scope of a jumping regularly, and beacon frame source address is its temporary link address; Stationary nodes obtains the relative angle with this neighbours' stationary nodes by the beacon frame receiving neighbours' stationary nodes, and judges whether oneself is boundary node according to following method:
1) if the relative angle of stationary nodes X neighbours stationary nodes all with it all interval (270 °, 360 °] or (0 °, 90 °], so oneself is then labeled as western boundary node by stationary nodes X;
2) if the relative angle of stationary nodes X neighbours stationary nodes all with it all interval (180 °, 360 °], so oneself is then labeled as northern boundary node by stationary nodes X;
3) if the relative angle of stationary nodes X neighbours stationary nodes all with it all interval (90 °, 270 °], so oneself is then labeled as eastern boundary node by stationary nodes X;
4) if the relative angle of stationary nodes X neighbours stationary nodes all with it all interval (0 °, 180 °], so oneself is then labeled as south bound node by stationary nodes X;
If fixed network produces the boundary node more than 4 in said process, then adopt 4 boundary nodes final in following method determination fixed network;
Each node oneself being labeled as western boundary node builds four-tuple coordinate, wherein, the coordinate arriving the distance of western boundary node corresponding is 0, the coordinate arriving the distance of other boundary nodes corresponding is non-zero, then in fixed network, broadcasts a beacon frame, and beacon frame source address is oneself temporary link address, beacon frame load is oneself interim four-tuple coordinate and jumping figure parameter, the initial value of jumping figure parameter is 0, and be often forwarded once, its value increases progressively 1; After the western boundary node of another one receives this beacon frame, contrast the temporary link address of oneself and the source address of the beacon frame received, if the source address of oneself is larger, then delete the west circle node identities mark of oneself, the minimum western boundary node in final link address becomes western boundary node unique in network;
Each node oneself being labeled as eastern boundary node builds four-tuple coordinate, wherein, the coordinate arriving the distance of eastern boundary node corresponding is 0, the coordinate arriving the distance of other boundary nodes corresponding is non-zero, then in fixed network, broadcasts a beacon frame, and beacon frame source address is oneself temporary link address, beacon frame load is oneself interim four-tuple coordinate and jumping figure parameter, the initial value of jumping figure parameter is 0, and be often forwarded once, its value increases progressively 1; After another one east boundary node receives this beacon frame, contrast the temporary link address of oneself and the source address of the beacon frame received, if the source address of oneself is larger, then delete the east circle node identities mark of oneself, the minimum eastern boundary node in final link address becomes eastern boundary node unique in network;
Each node oneself being labeled as south bound node builds four-tuple coordinate, wherein, the coordinate that the distance of arrival south bound node is corresponding is 0, the coordinate arriving the distance of other boundary nodes corresponding is non-zero, then in fixed network, broadcasts a beacon frame, and beacon frame source address is oneself temporary link address, beacon frame load is interim four-tuple coordinate and jumping figure parameter, the initial value of jumping figure parameter is 0, and be often forwarded once, its value increases progressively 1; After another one south bound node receives this beacon frame, contrast the temporary link address of oneself and the source address of the beacon frame received, if the source address of oneself is larger, then delete the south bound node identities mark of oneself, the south bound node finally only having link address minimum becomes south bound node unique in network;
Each node oneself being labeled as northern boundary node builds four-tuple coordinate, wherein, the coordinate arriving the distance of northern boundary node corresponding is 0, the coordinate arriving the distance of other boundary nodes corresponding is non-zero, then in fixed network, broadcasts a beacon frame, and beacon frame source address is oneself temporary link address, beacon frame load is interim four-tuple coordinate and jumping figure parameter, the initial value of jumping figure parameter is 0, and be often forwarded once, its value increases progressively 1; After another one north boundary node receives this beacon frame, contrast the temporary link address of oneself and the source address of the beacon frame received, if the source address of oneself is larger, then delete the north circle node identities mark of oneself, the northern boundary node finally only having link address minimum becomes northern boundary node unique in network;
After stationary nodes in fixed network receives the beacon frame of boundary node broadcast, judge it is eastern boundary node according to the interim four-tuple coordinate in beacon frame, south bound node, western boundary node or northern boundary node, record simultaneously and arrive the minimum eastern boundary node in temporary link address, south bound node, the jumping figure value of western boundary node or northern boundary node, and the four-tuple coordinate setting up oneself;
After stationary nodes Z1 obtains four-tuple coordinate, be combined with network prefix and form IPv6 address, wherein node ID is set to 0, then broadcast beacon frame within the scope of a jumping, and beacon frame source address is the link address of configuration;
Neighbours' stationary nodes of stationary nodes Z1 has uniqueness node ID by following Procedure Acquisition:
After neighbours' stationary nodes of stationary nodes Z1 receives this beacon frame, if the four-tuple coordinate of neighbours' stationary nodes equals the four-tuple coordinate of beacon frame source address, so neighbours' stationary nodes performs assign operation q=q+1, q is the node ID value of source address, then the node ID of oneself is set to q, broadcast beacon frame;
Neighbours' stationary nodes that the neighbours' stationary nodes receiving beacon frame repeats above-mentioned stationary nodes Z1 obtains the process with uniqueness node ID, until stationary nodes Z1 receives the beacon frame of all neighbours' stationary nodes.
2. the Realization Method of Communication of the wearable network of the next generation according to claim 1, is characterized in that, mobile network depends on the health of people, and in mobile network, all mobile nodes are neighbor node;
After stationary nodes obtains address, the beacon frame load of broadcast is network prefix, and the mobile node in mobile network obtains place network of network prefix by the beacon frame of intercepting stationary nodes;
After mobile network starts, all mobile nodes adopt MAC Address to build temporary link address and broadcast beacon frame, all mobile nodes are according to random sequence broadcast beacon frame, the sequence number u of each mobile node record oneself first time broadcast beacon frame, wherein the mobile node of first broadcast beacon frame is called the first node of mobile network;
The number of nodes n that first node is comprised by the beacon frame acquisition mobile node of intercepting the mobile node in mobile network, then applies for n mobile node ID to nearest stationary nodes F, comprises the steps:
Step 101: start;
Step 102: first node sends Address requests command frame to stationary nodes F, the temporary link address of node headed by Address requests command frame source address, and load is variable n;
After step 103: stationary nodes F receives Address requests command frame, select one section of unappropriated mobile node ID space [L, L+n-1], L is positive integer, then to first node return address response command frame, the load of address response command frame is positive integer L, is then labeled as in mobile node ID space [L, L+n-1] and distributes;
Step 104: after first node receives address response command frame, using the mobile node ID of positive integer L as oneself, and the formation home address that combines with the network prefix of stationary nodes F, four-tuple coordinate and node ID, and broadcast beacon frame, beacon frame load is positive integer L, and source address is the link address after configuration;
Step 105: after the mobile node in mobile network receives beacon frame, using the mobile node ID of positive integer L+u-1 as oneself, then combine with the four-tuple coordinate of the network prefix listened to and first node and node ID formation home IP Address;
Step 106: terminate.
3. the Realization Method of Communication of the wearable network of the next generation according to claim 2, is characterized in that, when after stationary nodes configuration address, and the jumping figure maximum E that the beacon frame load of broadcast comprises network prefix, stationary nodes arrives eastern boundary node
max, arrive the jumping figure maximum S of south bound node
max, arrive the jumping figure maximum W of western boundary node
max, arrive the jumping figure maximum N of northern boundary point node
max,, and the maximum ID of node ID
max; S
max, W
max, N
max,, N
max,and ID
maxinitial value be respectively the jumping figure value of the arrival east boundary node of stationary nodes oneself, arrive the jumping figure value of south bound node, arrive the jumping figure value of western boundary node, arrive the jumping figure value of northern boundary node, and the node ID of oneself;
When the stationary nodes in network receives after the beacon frame of neighbours' stationary nodes broadcast, contrast the S oneself preserved
max, W
max, N
max,, N
max,and ID
maxwith the S in beacon frame load
max, W
max, N
max,, N
max,and ID
maxif have at least a variable larger in beacon frame, i.e. S
maxor W
maxor N
max,or N
max,or ID
max, then upgrade oneself less variable with relevant variable larger in beacon frame, repeat said process, final stationary nodes can obtain the S of fixed network
max, W
max, N
max,, N
max,and ID
max;
After first node in mobile network receives the network prefix of neighbours' stationary nodes, if detect that this network prefix is different from the network prefix of oneself, then judge that movement of mobile network is in another fixed network, now first node carries out following care-of address configuration:
Step 201: start;
Step 202: first node produces one at random and is greater than E
maxvalue e, be greater than S
maxvalue s, be greater than W
maxvalue w, be greater than N
maxvalue n, be greater than ID
maxvalue d, then broadcast beacon frame in mobile network, beacon load is the random e produced, s, w, n and d, build the Care-of Address of oneself, wherein, network prefix is the network prefix of stationary nodes F simultaneously, the jumping figure arriving eastern boundary node in four-tuple coordinate is set to e, the jumping figure arriving south bound node is set to s, and the jumping figure arriving western boundary node is set to w, and the jumping figure arriving northern boundary node is set to n, node ID is set to d, and mobile node ID equals the mobile node ID in home address;
Step 203: after the mobile node in mobile network receives beacon frame, build the Care-of Address of oneself, wherein, network prefix is the network prefix of stationary nodes F, the jumping figure arriving eastern boundary node in four-tuple coordinate is set to the e in beacon frame load, the jumping figure of arrival south bound node is set to the s in beacon frame load, the jumping figure arriving western boundary node is set to the w in beacon frame load, the jumping figure arriving northern boundary node is set to the n in beacon frame load, node ID is set to the d in beacon frame load, mobile node ID equals the mobile node ID in home address,
Step 204: care-of address configuration terminates.
4. the Realization Method of Communication of the wearable network of the next generation according to claim 3, is characterized in that, after the first node of described mobile network carries out care-of address configuration, carries out following address binding operations:
Step 301: start;
Step 302: first node sends address binding message to local couple in router, the Care-of Address of the new configuration of node headed by the source address of address binding message, address binding Message Payload is the node total number n that comprises in mobile network and the home address of oneself;
Step 303: after local couple in router receives address binding message, Care-of Address corresponding for the home address of first address is updated to the source address of address binding message, then proceed as follows for the mobile node of eligible 1: the Care-of Address building the mobile node of eligible 1, wherein, the overall route prefix of this Care-of Address, the overall route prefix of four-tuple coordinate and node ID and address binding Message Source Address, four-tuple coordinate and node ID identical, mobile node ID equals the mobile node ID of the home address of this node, then the Care-of Address of this mobile node is updated to the new Care-of Address built,
Condition 1: the overall route prefix of the overall route prefix of the home address of this mobile node, four-tuple coordinate and node ID and the home address of first node, four-tuple coordinate and node ID are identical, and the scope of mobile node ID is at interval [L1, L1+n-1] in scope, wherein, the mobile node ID of node headed by L1;
Step 304: terminate.
5. the Realization Method of Communication of the wearable network of the next generation according to claim 4, it is characterized in that, if the mobile node X1 in mobile network B1 is identical with the Care-of Address of the mobile node X2 in mobile network B2, so the communication process of mobile node X1 and internet node N1 is:
Step 401: start;
Step 402: mobile node X1 sends data request information to internet node N1;
Step 403: after internet node N1 receives data request information, to mobile node X1 return data response message;
Step 404: the route of data response message is divided into following three kinds of situations to process respectively:
Situation 1: data response message is routed to mobile node X1 and mobile node X2: mobile node X1 simultaneously and receives the laggard row relax of data response message, mobile node X2 directly abandons after receiving data response message, mobile node X2 sends address conflict message to the first node in mobile network B2 simultaneously, after first node in mobile network B2 receives address conflict message, perform step 201 and reconfigure Care-of Address to step 204, then perform step 301 and re-start address binding to step 304;
Situation 2: data response message is only routed to mobile node X1: mobile node X1 receives the laggard row relax of data response message;
Situation 3: data response message is only routed to mobile node X2: mobile node X2 directly abandons after receiving data response message, mobile node X2 sends address conflict message to the first node in mobile network B2 simultaneously, after first node in mobile network B2 receives address conflict message, perform step 201 and reconfigure Care-of Address to step 204, then perform step 301 and re-start address binding to step 304, mobile node X1 repeats to send data request information to internet node N1;
Step 405: terminate;
The communication process of internet node N1 and mobile node X1 is:
Step 501: start;
Step 502: internet node N1 sends data request information to mobile node X1, and data request information destination address is the home address of mobile node X1;
Step 503: first this data request information arrives the local couple in router AR1 of mobile node X1, then couple in router AR1 in local is according to the Care-of Address of the mobile node X1 of record, increase a tunnel header in data request information, the destination address of tunnel header is the Care-of Address of mobile node X1;
Step 504: the route with the data request information of tunnel header is divided into following three kinds of situations to process respectively:
Situation 1: the data request information with tunnel header is routed to mobile node X1 and mobile node X2 simultaneously: after mobile node X1 receives the data request information with tunnel header, first remove tunnel header and check the destination address of data request information, judge that destination address is oneself home address, mobile node X1 carries out processing and to internet node N1 return data response message, after mobile node X2 receives the data request information with tunnel header, first remove tunnel header and check the destination address of data request information, judge that the destination address of data request information is not oneself home address, directly abandon described data request information, it sends address conflict message to the first node in mobile network B2 simultaneously, after first node in mobile network B2 receives address conflict message, perform step 201 and reconfigure Care-of Address to step 204, then perform step 301 and re-start address binding to step 304,
Situation 2: the data request information with tunnel header is only routed to mobile node X1: after mobile node X1 receives the data request information with tunnel header, first remove tunnel header and check the destination address of data request information, judge that destination address is oneself home address, mobile node X1 carries out processing and to internet node N1 return data response message;
Situation 3: the data request information with tunnel header is only routed to mobile node X2: after mobile node X2 receives the data request information with tunnel header, first remove tunnel header and check the destination address of data request information, judge that the destination address of data request information is not oneself home address, directly abandon described data request information, it sends address conflict message to the first node in mobile network B2 simultaneously, after first node in mobile network B2 receives address conflict message, perform step 201 and reconfigure Care-of Address to step 204, then perform step 301 and re-start address binding to step 304, internet node N1 repeats to send data request information to mobile node X1,
Step 505: terminate.
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| EP1719321B1 (en) * | 2004-02-03 | 2013-05-01 | Nokia Siemens Networks Oy | Method and apparatus to provide group management of multiple link identifiers for collective mobility |
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| CN102333118A (en) * | 2011-10-08 | 2012-01-25 | 常熟理工学院 | Automatic Internet protocol version 6 (IPv6) address configuration method for vehicular network |
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