CN105516381A - Method, device and system for generating IPv6 address - Google Patents
Method, device and system for generating IPv6 address Download PDFInfo
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- CN105516381A CN105516381A CN201410539634.4A CN201410539634A CN105516381A CN 105516381 A CN105516381 A CN 105516381A CN 201410539634 A CN201410539634 A CN 201410539634A CN 105516381 A CN105516381 A CN 105516381A
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- pan
- 6lowpan
- ipv6 address
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Abstract
The invention discloses a method, a device and a system for generating an IPv6 address. A 6Lowpan terminal sends a PAN correlation request to a network side device so as to obtain a PAN identification and a link layer short address. When the PAN correlation request sent by the network side device is received, a prefix searching request is sent to the network side device so that a related IPv6 address prefix can be easily searched. When the IPv6 address prefix provided by the network side device is received, the PAN identification and the link layer short address are extracted from the PAN correlation request, and an IPv6 address is generated by use of the IPv6 address prefix, the PAN identification and the link layer short address. By using the PAN identification to identify terminal addresses in different PANs, a global unique IPv6 address can be generated by use of the obtained PAN identification and the link layer short address. Thus, complexity of operation and management of a 6Lowpan Internet of Things is reduced; operation efficiency of the network is increased; and by adding the PAN identification to generate the IPv6 address, numbers of 6Lowpan terminals in a short address mode are expanded, and use rate of the IPv6 address in the 6Lowpan network is increased.
Description
Technical field
The present invention relates to the communications field, particularly a kind of methods, devices and systems for generating IPv6 address.
Background technology
6Lowpan compresses for Internet of Things low-power consumption environment (namely based on the wireless personal-area network of IEEE802.15.4) traditional IPv6 message and optimizes, and is a kind of lightweight IPv6 agreement based on Next Generation Internet standard.
For the object reducing expense, each wireless PAN (PersonalAreaNetwork in 6Lowpan network, personal area network) in 6Lowpan terminal tendency adopt 16 bit links layer short address of Random assignment, instead of globally unique 64bit bit long address, therefore in different PAN, the short address of terminal allows to repeat, but the IPv6 address of the repetition that 6Lowpan terminal can generate according to the link layer address of this repetition in current way.
Fig. 1 is the schematic diagram that in prior art, 6Lowpan terminal generates IPv6 address under the pattern of short address.Wherein:
Step 101,6Lowpan terminal sends router solicitation (RS) to 6Lowpan router.
Step 102,6Lowpan router returns router advertisement (RA), comprising IPv6 address prefix to 6Lowpan terminal.
Step 103,6Lowpan terminal generates IPv6 address, i.e. [prefix]: 0000:00FF:FE00:XXXX according to IPv6 address prefix, 16 bit short address XXXX.
Because the short address of terminal can be repeated in different PAN, therefore IPv6 address conflict can be caused.Thus terminal must call 6Lowpan global I Pv6 duplicate address detection flow process.
Step 104,6Lowpan terminal sends neighbor request (NS) to 6Lowpan router.
Step 105,6Lowpan router sends overall duplicate address detection request (DAR) to 6Lowpan gateway.
Step 106,6Lowpan gateway detects the IPv6 address that terminal generates.
Step 107,6Lowpan gateway is returned results by duplicate address detection response message (DAC).
Step 108, testing result is sent to 6Lowpan terminal by returning neighbor advertisement (NA) by 6Lowpan router.
Step 109,6Lowpan terminal, according to testing result, if there is address conflict, then needs to regenerate 16 bit short addresses, and turns back to step 103; If there is not address conflict, then confirm that this address can be used.
The IPv6 address generated under the pattern of short address due to current 6Lowpan terminal may be repeated, and therefore can bring following problem:
1, force call 6Lowpan global address collision detection (DAD) mechanism is needed to check to the IPv6 Address requests of each 6Lowpan terminal, the 6Lowpan terminal of address conflict need regenerate new short address and derivative IPv6 address, adds 6Lowpan terminal, 6Lowpan router, the expense of gateway and energy consumption.
2, because address generative process does not consider that PAN identifies, the uniqueness of existing 6Lowpan IPv 6 terminal address only depends on the uniqueness of terminal 16 bit short address in whole 6Lowpan network, therefore the 6Lowpan terminal quantity in same 6Lowpan network in N number of PAN has reduced to 16 bits from N × 16 bit, indirectly causes the waste of IPv6 address space.
Summary of the invention
The embodiment of the present invention provides a kind of methods, devices and systems for generating IPv6 address.By adopting the terminal address in the different PAN of PAN identification tag, thus 6Lowpan terminal can utilize the PAN of acquisition to identify and link layer short address generates the unique IPv6 address of the overall situation.
According to an aspect of the present invention, a kind of method for generating IPv6 address being provided, comprising:
PAN association request is sent, to obtain PAN mark and link layer short address to network equipment;
When receiving the PAN association request response that network equipment sends, send prefix lookups request to network equipment, so that the IPv6 address prefix that inquiry is relevant;
When receiving the IPv6 address prefix that network equipment provides, from PAN association request response, extract PAN mark and link layer short address;
IPv6 address prefix, PAN is utilized to identify and generation IPv6 address, link layer short address.
In one embodiment, the step to network equipment transmission PAN association request comprises:
6Lowpan gateway to network side sends PAN association request, so that 6Lowpan gateway is according to the corresponding PAN mark of request dispatching and link layer short address.
In one embodiment, the step to the request of network equipment transmission prefix lookups comprises:
6Lowpan router to network side sends prefix lookups request, so that 6Lowpan router provides relevant IPv6 address prefix.
In one embodiment, the step utilizing IPv6 address prefix, PAN mark and link layer short address to generate IPv6 address comprises:
The IPv6 address generated is
[IPv6 address prefix]: 00Y
1y
2: Y
3y
4fF:FE00:X
1x
2x
3x
4
Wherein Y
1y
2y
3y
4be that 16 bit PAN identify, X
1x
2x
3x
4be 16 bit links layer short address, F and E is the character in hexadecimal.
According to a further aspect in the invention, providing a kind of device for generating IPv6 address, comprising PAN and associating request unit, prefix request unit, extraction unit and scalar/vector, wherein:
PAN associates request unit, for sending PAN association request to network equipment, to obtain PAN mark and link layer short address;
Prefix request unit, when the PAN receiving network equipment transmission associates and asks response, sends prefix lookups request to network equipment, to inquire about the IPv6 address prefix of being correlated with for associating request unit as PAN;
Extraction unit, during for receiving IPv6 address prefix that network equipment provides when prefix request unit, extracts PAN mark and link layer short address from PAN association request response;
Scalar/vector, identifies for utilizing IPv6 address prefix, PAN and link layer short address generates IPv6 address.
In one embodiment, PAN associates request unit and specifically sends PAN association request to the 6Lowpan gateway of network side, so that 6Lowpan gateway is according to the corresponding PAN mark of request dispatching and link layer short address.
In one embodiment, prefix request unit specifically sends prefix lookups request, so that 6Lowpan router provides relevant IPv6 address prefix to the 6Lowpan router of network side.
In one embodiment, the IPv6 address that scalar/vector specifically utilizes IPv6 address prefix, PAN mark and link layer short address to generate is
[IPv6 address prefix]: 00Y
1y
2: Y
3y
4fF:FE00:X
1x
2x
3x
4
Wherein Y
1y
2y
3y
4be that 16 bit PAN identify, X
1x
2x
3x
4be 16 bit links layer short address, F and E is the character in hexadecimal.
According to a further aspect in the invention, a kind of system for generating IPv6 address being provided, comprising 6Lowpan device, network equipment, wherein:
6Lowpan device is the device that above-mentioned any embodiment relates to;
Network equipment, for when receiving the PAN association request that described 6Lowpan device sends, identify and link layer short address for described 6Lowpan device distributes corresponding PAN, the request that associated by PAN sends to described 6Lowpan device, and wherein PAN association request comprises described PAN mark and link layer short address; Receiving the prefix lookups request of described 6Lowpan device transmission, relevant IPv6 address prefix is sent to described 6Lowpan device.
In one embodiment, network equipment comprises 6Lowpan gateway and 6Lowpan router, wherein:
6Lowpan gateway, for when receiving the PAN association request that described 6Lowpan device sends, identifying and link layer short address for described 6Lowpan device distributes corresponding PAN, described PAN being associated request and sends to described 6Lowpan device;
6Lowpan router, in the prefix lookups request receiving the transmission of described 6Lowpan device, sends to described 6Lowpan device by relevant IPv6 address prefix.
The present invention is by adopting the terminal address in the different PAN of PAN identification tag, thus 6Lowpan terminal can utilize the PAN of acquisition to identify and link layer short address generates the unique IPv6 address of the overall situation.Thus reduce the complexity that 6Lowpan Internet of Things runs, manages, improve the operational efficiency of network, simultaneously generate IPv6 address owing to adding PAN mark, extend the quantity of 6Lowpan terminal under the pattern of short address, enhance the utilance of IPv6 address in 6Lowpan network.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the schematic diagram that in prior art, 6Lowpan terminal generates IPv6 address under the pattern of short address.
Fig. 2 is that the present invention is for generating the schematic diagram of a method embodiment of IPv6 address.
Fig. 3 is that the present invention is for generating the schematic diagram of a device embodiment of IPv6 address.
Fig. 4 is that the present invention is for generating the schematic diagram of a system embodiment of IPv6 address.
Fig. 5 is that the present invention is for generating the schematic diagram of another embodiment of system of IPv6 address.
Fig. 6 is the schematic diagram that 6Lowpan terminal of the present invention generates IPv6 address under the pattern of short address.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Illustrative to the description only actually of at least one exemplary embodiment below, never as any restriction to the present invention and application or use.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Unless specifically stated otherwise, otherwise positioned opposite, the numerical expression of the parts of setting forth in these embodiments and step and numerical value do not limit the scope of the invention.
Meanwhile, it should be understood that for convenience of description, the size of the various piece shown in accompanying drawing is not draw according to the proportionate relationship of reality.
May not discuss in detail for the known technology of person of ordinary skill in the relevant, method and apparatus, but in the appropriate case, described technology, method and apparatus should be regarded as a part of authorizing specification.
In all examples with discussing shown here, any occurrence should be construed as merely exemplary, instead of as restriction.Therefore, other example of exemplary embodiment can have different values.
It should be noted that: represent similar terms in similar label and letter accompanying drawing below, therefore, once be defined in an a certain Xiang Yi accompanying drawing, then do not need to be further discussed it in accompanying drawing subsequently.
Fig. 2 is that the present invention is for generating the schematic diagram of a method embodiment of IPv6 address.Preferably, the method step of the present embodiment can be performed by 6Lowpan terminal:
Step 201, sends PAN association request to network equipment, to obtain PAN mark and link layer short address.
Preferably, PAN association request can be sent to the 6Lowpan gateway of network side, so that 6Lowpan gateway is according to the corresponding PAN mark of request dispatching and link layer short address.
Step 202, when receiving the PAN association request response that network equipment sends, sends prefix lookups request to network equipment, so that the IPv6 address prefix that inquiry is relevant.
Preferably, prefix lookups request can be sent, so that 6Lowpan router provides relevant IPv6 address prefix to the 6Lowpan router of network side.
Step 203, when receiving the IPv6 address prefix that network equipment provides, extracts PAN mark and link layer short address from PAN association request response.
Step 204, utilizes IPv6 address prefix, PAN to identify and link layer short address generates IPv6 address.
Preferably, the IPv6 address of generation is
[IPv6 address prefix]: 00Y
1y
2: Y
3y
4fF:FE00:X
1x
2x
3x
4
Wherein Y
1y
2y
3y
4be that 16 bit PAN identify, X
1x
2x
3x
4be 16 bit links layer short address, F and E is the character in hexadecimal.
Based on the method for generating IPv6 address that the above embodiment of the present invention provides, by adopting the terminal address in the different PAN of PAN identification tag, thus 6Lowpan terminal can utilize the PAN of acquisition to identify and link layer short address generates the unique IPv6 address of the overall situation.Thus reduce the complexity that 6Lowpan Internet of Things runs, manages, improve the operational efficiency of network, simultaneously generate IPv6 address owing to adding PAN mark, extend the quantity of 6Lowpan terminal under the pattern of short address, enhance the utilance of IPv6 address in 6Lowpan network.
Fig. 3 is that the present invention is for generating the schematic diagram of a device embodiment of IPv6 address.As shown in Figure 3, this device can comprise PAN association request unit 301, prefix request unit 302, extraction unit 303 and scalar/vector 304.Wherein:
PAN associates request unit 301, for sending PAN association request to network equipment, to obtain PAN mark and link layer short address.
Preferably, PAN associates request unit 301 and specifically sends PAN association request to the 6Lowpan gateway of network side, so that 6Lowpan gateway is according to the corresponding PAN mark of request dispatching and link layer short address.
Prefix request unit 302, when the PAN receiving network equipment transmission associates and asks response, sends prefix lookups request to network equipment, to inquire about the IPv6 address prefix of being correlated with for associating request unit 301 as PAN.
Preferably, prefix request unit 302 specifically sends prefix lookups request, so that 6Lowpan router provides relevant IPv6 address prefix to the 6Lowpan router of network side.
Extraction unit 303, during for receiving IPv6 address prefix that network equipment provides when prefix request unit 302, extracts PAN mark and link layer short address from PAN association request response.
Scalar/vector 304, identifies for utilizing IPv6 address prefix, PAN and link layer short address generates IPv6 address.
Preferably, the IPv6 address that scalar/vector 304 specifically utilizes IPv6 address prefix, PAN mark and link layer short address to generate is
[IPv6 address prefix]: 00Y
1y
2: Y
3y
4fF:FE00:X
1x
2x
3x
4
Wherein Y
1y
2y
3y
4be that 16 bit PAN identify, X
1x
2x
3x
4be 16 bit links layer short address, F and E is the character in hexadecimal.
Based on the device for generating IPv6 address that the above embodiment of the present invention provides, by adopting the terminal address in the different PAN of PAN identification tag, thus 6Lowpan terminal can utilize the PAN of acquisition to identify and link layer short address generates the unique IPv6 address of the overall situation.Thus reduce the complexity that 6Lowpan Internet of Things runs, manages, improve the operational efficiency of network, simultaneously generate IPv6 address owing to adding PAN mark, extend the quantity of 6Lowpan terminal under the pattern of short address, enhance the utilance of IPv6 address in 6Lowpan network.
Fig. 4 is that the present invention is for generating the schematic diagram of a system embodiment of IPv6 address.As shown in Figure 4, this system comprises 6Lowpan device 401, network equipment 402.Wherein:
6Lowpan device 401, the device related to any one of Fig. 3.
Network equipment 402, for when receiving the PAN association request that described 6Lowpan device 401 sends, identify and link layer short address for described 6Lowpan device 401 distributes corresponding PAN, the request that associated by PAN sends to described 6Lowpan device 401, and wherein PAN association request comprises described PAN mark and link layer short address; Receiving the prefix lookups request of described 6Lowpan device 401 transmission, relevant IPv6 address prefix is sent to described 6Lowpan device 401.
Fig. 5 is that the present invention is for generating the schematic diagram of another embodiment of system of IPv6 address.Compared with embodiment illustrated in fig. 4, in the embodiment shown in fig. 5, network equipment 402 can comprise 6Lowpan gateway 501 and 6Lowpan router five 02.Wherein:
6Lowpan gateway 501, for when receiving the PAN association request that described 6Lowpan device 401 sends, identify and link layer short address for described 6Lowpan device 401 distributes corresponding PAN, described PAN is associated request and sends to described 6Lowpan device 401.
6Lowpan router five 02, in the prefix lookups request receiving the transmission of described 6Lowpan device 401, sends to described 6Lowpan device 401 by relevant IPv6 address prefix.
Below by concrete example, the present invention will be described, as shown in Figure 6:
Step 601,6Lowpan terminal sends PAN association request to 6Lowpan gateway.
Step 602,6Lowpan gateway is according to request, and 16 bit PAN belonging to distributing terminals identify Y
1y
2y
3y
4and unique 16 bit short address X in PAN
1x
2x
3x
4.
Step 603,6Lowpan gateway sends PAN association to 6Lowpan terminal and asks response, and wherein PAN association request response comprises 16 bit PAN mark Y
1y
2y
3y
4and 16 bit short address X
1x
2x
3x
4.
Step 604,6Lowpan terminal sends prefix lookups request to 6Lowpan router after receiving PAN association request response.
Step 605, IPv6 address prefix is supplied to 6Lowpan terminal by 6Lowpan router.
Step 606, after 6Lowpan terminal receives IPv6 address prefix, extracts PAN mark and link layer short address, utilizes IPv6 address prefix, PAN mark and link layer short address to generate IPv6 address from PAN association request response.
Such as, IPv6 address can be:
[IPv6 address prefix]: 00Y
1y
2: Y
3y
4fF:FE00:X
1x
2x
3x
4
Wherein Y
1y
2y
3y
4be that 16 bit PAN identify, X
1x
2x
3x
4be 16 bit links layer short address, F and E is the character in hexadecimal.
By implementing the present invention, following beneficial effect can be obtained:
1, avoid 6Lowpan terminal and generate the IPv6 address of repeating, reduce the operation time delay that overall duplicate address detection and address frequently re-generate initiation, improve the operational efficiency of 6Lowpan Sensor Network.
2, generate IPv6 address owing to adding PAN mark, extend the quantity of 6Lowpan terminal under the pattern of short address, enhance the utilance of IPv6 address in 6Lowpan network.
One of ordinary skill in the art will appreciate that all or part of step realizing above-described embodiment can have been come by hardware, the hardware that also can carry out instruction relevant by program completes, described program can be stored in a kind of computer-readable recording medium, the above-mentioned storage medium mentioned can be read-only memory, disk or CD etc.
Description of the invention provides in order to example with for the purpose of describing, and is not exhaustively or limit the invention to disclosed form.Many modifications and variations are obvious for the ordinary skill in the art.Selecting and describing embodiment is in order to principle of the present invention and practical application are better described, and enables those of ordinary skill in the art understand the present invention thus design the various embodiments with various amendment being suitable for special-purpose.
Claims (10)
1. for generating a method for IPv6 address, it is characterized in that, comprising:
PAN association request is sent, to obtain PAN mark and link layer short address to network equipment;
When receiving the PAN association request response that network equipment sends, send prefix lookups request to network equipment, so that the IPv6 address prefix that inquiry is relevant;
When receiving the IPv6 address prefix that network equipment provides, from PAN association request response, extract PAN mark and link layer short address;
IPv6 address prefix, PAN is utilized to identify and generation IPv6 address, link layer short address.
2. method according to claim 1, is characterized in that,
The step sending PAN association request to network equipment comprises:
6Lowpan gateway to network side sends PAN association request, so that 6Lowpan gateway is according to the corresponding PAN mark of request dispatching and link layer short address.
3. method according to claim 1, is characterized in that,
The step sending prefix lookups request to network equipment comprises:
6Lowpan router to network side sends prefix lookups request, so that 6Lowpan router provides relevant IPv6 address prefix.
4. the method according to any one of claim 1-3, is characterized in that,
The step utilizing IPv6 address prefix, PAN mark and link layer short address to generate IPv6 address comprises:
The IPv6 address generated is
[IPv6 address prefix]: 00Y
1y
2: Y
3y
4fF:FE00:X
1x
2x
3x
4
Wherein Y
1y
2y
3y
4be that 16 bit PAN identify, X
1x
2x
3x
4be 16 bit links layer short address, F and E is the character in hexadecimal.
5. for generating a device for IPv6 address, it is characterized in that, comprising PAN and associating request unit, prefix request unit, extraction unit and scalar/vector, wherein:
PAN associates request unit, for sending PAN association request to network equipment, to obtain PAN mark and link layer short address;
Prefix request unit, when the PAN receiving network equipment transmission associates and asks response, sends prefix lookups request to network equipment, to inquire about the IPv6 address prefix of being correlated with for associating request unit as PAN;
Extraction unit, during for receiving IPv6 address prefix that network equipment provides when prefix request unit, extracts PAN mark and link layer short address from PAN association request response;
Scalar/vector, identifies for utilizing IPv6 address prefix, PAN and link layer short address generates IPv6 address.
6. device according to claim 5, is characterized in that,
PAN associates request unit and specifically sends PAN association request to the 6Lowpan gateway of network side, so that 6Lowpan gateway is according to the corresponding PAN mark of request dispatching and link layer short address.
7. device according to claim 5, is characterized in that,
Prefix request unit specifically sends prefix lookups request, so that 6Lowpan router provides relevant IPv6 address prefix to the 6Lowpan router of network side.
8. the device according to any one of claim 5-7, is characterized in that,
Scalar/vector specifically utilizes IPv6 address prefix, PAN to identify and the IPv6 address of link layer short address generation is
[IPv6 address prefix]: 00Y
1y
2: Y
3y
4fF:FE00:X
1x
2x
3x
4
Wherein Y
1y
2y
3y
4be that 16 bit PAN identify, X
1x
2x
3x
4be 16 bit links layer short address, F and E is the character in hexadecimal.
9. for generating a system for IPv6 address, it is characterized in that, comprising 6Lowpan device, network equipment, wherein:
6Lowpan device, the device related to any one of claim 5-8;
Network equipment, for when receiving the PAN association request that described 6Lowpan device sends, identify and link layer short address for described 6Lowpan device distributes corresponding PAN, the request that associated by PAN sends to described 6Lowpan device, and wherein PAN association request comprises described PAN mark and link layer short address; Receiving the prefix lookups request of described 6Lowpan device transmission, relevant IPv6 address prefix is sent to described 6Lowpan device.
10. system according to claim 9, is characterized in that, network equipment comprises 6Lowpan gateway and 6Lowpan router, wherein:
6Lowpan gateway, for when receiving the PAN association request that described 6Lowpan device sends, identifying and link layer short address for described 6Lowpan device distributes corresponding PAN, described PAN being associated request and sends to described 6Lowpan device;
6Lowpan router, in the prefix lookups request receiving the transmission of described 6Lowpan device, sends to described 6Lowpan device by relevant IPv6 address prefix.
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| CN201410539634.4A CN105516381A (en) | 2014-10-14 | 2014-10-14 | Method, device and system for generating IPv6 address |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410539634.4A CN105516381A (en) | 2014-10-14 | 2014-10-14 | Method, device and system for generating IPv6 address |
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| CN105516381A true CN105516381A (en) | 2016-04-20 |
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