CN102892108A - Multiple address prefix distributing method and system - Google Patents
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- CN102892108A CN102892108A CN2011102003602A CN201110200360A CN102892108A CN 102892108 A CN102892108 A CN 102892108A CN 2011102003602 A CN2011102003602 A CN 2011102003602A CN 201110200360 A CN201110200360 A CN 201110200360A CN 102892108 A CN102892108 A CN 102892108A
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- H04L2101/668—Internet protocol [IP] address subnets
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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Abstract
The invention discloses a multiple address prefix distributing method and system. The multiple address prefix distributing method comprises the following steps that: a wireless device informs a gateway GPRS (General Packet Radio Service) supporting node, namely a GGSN (Gateway GPRS Support Node), the number N of applied address prefixes, and the GGSN determines the number M of distributable address prefixes and distributes M address prefixes for the wireless device, wherein both N and M are integers larger than 1. According to the multiple address prefix distributing method and system disclosed by the invention, a corresponding number of address prefixes can be distributed to different wireless devices according to actual requirements of the different wireless devices, so that prefix resources can be distributed and utilized reasonably, and performances of the multiple address prefix distributing system are improved.
Description
Technical field
The present invention relates to the mobile communication technology field, more specifically, relate to a kind of a plurality of IPv6 prefix assignment method and system.
Background technology
In 3GPP TS 23.060 technical specifications, for wireless device has defined two kinds of IPv6 address dynamic assignment modes, namely there are the automatic configuration of state address and stateless address automatically to configure.There is the state address auto configuration mode to refer to by IPv6 DHCP (DHCPv6, Dynamic Host Configuration Protocol for IPv6) the protocol interaction flow process is finished the configuration of IPv6 address and other network parameters, this mode requires wireless device must support DHCPv6 Client protocol function, and network side must configure a DHCPv6 server.
The automatic configuration flow of stateless address as shown in Figure 1, whole process divides two stages to finish by network, the first stage wireless device is from Gateway GPRS Support Node (Gateway GPRS Support Node, abbreviation GGSN) obtains its interface identifier, this one-phase is finished by the process of packet data protocol (PDP, Packet Data Protocol) context activation.Prefix or interface identifier that GGSN is assigned to wireless device are unique in the overall situation or site-bound, and wireless device does not need to carry out duplicate address detection (DAD, Duplicate Address Detection).The second stage wireless device obtains network prefix from GGSN, wireless device is by using route requests (RS, Router Solicitation) and the message of advertising of route (RA, Router Advertisement) come to obtain the required address prefix in global IPv 6 address from GGSN.Wireless device will use the interface identifier of network allocation or the local random interface identifier that generates to form a local unicast address of new link.Then, take this address as source address, main frame router solicitation of all-router multileaving (RS) in the link-local is asked configuration information, and GGSN comprises the router advertisement (RA) that can assemble global unicast address prefix and other relevant configuration information as responding with one.The global address prefix that wireless device obtains from router with it adds the interface identifier of oneself, automatically generate global unicast address, then just can with Internet in other main-machine communication.
The automatic configuring technical of existing stateless address has two kinds of prefix assignment technology, namely shares prefix and unique prefix.In shared prefix assignment technology, GGSN is that a plurality of wireless devices distribute same prefix, that the whole network is unique and give the interface identifier of each terminal distribution, also be that the whole network is unique by the IPv6 address of sharing the generation of prefix and unique identification like this, GGSN identifies the PDP Context of wireless device with the unique IPv6 of this whole network address, finish external packet data net (PDN, Packet Data Network) to radio equipment data route and forwarding.In unique prefix assignment technology, GGSN distributes the unique prefix of the whole network for each wireless device, it also is that the whole network is unique that wireless device uses the interface identifier of this prefix and network allocation or IPv6 address that the local interface identifier that produces can generate, GGSN identifies the PDP Context of wireless device with the unique prefix of this whole network, finish external packet data net (PDN) to radio equipment data route and forwarding.
The automatic configuring technical of existing 3GPP stateless address can only distribute one 64 long shared prefixes or unique prefix for wireless device, and may to need network in the practical application be the problem that wireless device distributes a plurality of prefixes so it can't solve.For example, for the equipment such as radio network gateway/wireless router with 2G/3G wireless access function, it has a wireless wide-area network interface (WWAN usually at least, Wireless Wide Area Network) and a local network interface (LAN, Local Area Network), the WWAN mouth can be connected to Internet by the 2G/3G wireless technology, and the LAN mouth provides the 2G/3G wireless networking capabilities by connecting a plurality of user terminals under wired or the WIFI mode.Because IPv6 is with IPv6 NAT technology (NAT, Network Address Translation) abolished, so needing network is that wireless device distributes at least 2 64 long prefixes, the IPv6 address that one 64 shared prefix or unique prefix are used for the WAN mouth configures automatically, and another unique prefix configures automatically for the IPv6 address that is used in conjunction the family terminal under the LAN mouth.
As seen, the existing automatic configuring technical of stateless can't distribute the address prefix of respective numbers for it according to the wireless terminal actual needs.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of multiaddress prefix assignment method and system, solves in the existing automatic configuring technical of stateless to distribute the problem of the address prefix of respective numbers for it according to different radio equipment actual needs.
In order to solve the problems of the technologies described above, the invention provides a kind of multiaddress prefix assignment method, comprise: wireless device with the quantity N of address prefix of application notify to Gateway GPRS Support Node be GGSN, the number of addresses M that described GGSN determines to distribute is also for described wireless device distributes M address prefix, and N and M are the integer greater than 1.
Further, said method can also have following characteristics:
Wireless device notifies the quantity N of address prefix of application to the mode of GGSN: the router request message of quantity N that wireless device will carry the address prefix of described application is sent to described GGSN; Described GGSN is that described wireless device distributes the mode of M address prefix to be: described GGSN will carry in the advertising of route message of M the address prefix that distributes and be sent to described wireless device.
Further, said method can also have following characteristics:
Described GGSN determines that the mode of the number of addresses M that can distribute is: if the prefix quantity that described N limits greater than user contracting data then M value is defined as the prefix quantity that user contracting data limits, if described N would be less than or equal to the prefix quantity of user contracting data restriction then the M value is defined as described N.
Further, said method can also have following characteristics:
When the type of prefix is shared prefix in the IPv6 address that described GGSN determines to distribute for described wireless device, prefix in the described IPv6 address is configured to described wireless device as shared prefix, and be the individual unique prefix of described wireless device configuration M-1; When the type of prefix is unique type prefix in the IPv6 address that described GGSN determines to distribute for described wireless device, be preferably described wireless device configuration M unique prefix continuous and that have polymerizability, in the time of can't be for described wireless device configuration M unique prefix continuous and that have polymerizability, prefix in the described IPv6 address is configured to described wireless device as unique prefix, and be described wireless device configuration M-1 unique prefix.
Further, said method can also have following characteristics:
Described GGSN judges whether M address prefix comprises prefix in the IPv6 address of distributing for described wireless device, if have, this prefix is packaged in the first prefix position of described advertising of route message, other M-1 address prefix is packaged in respectively in the M prefix position, the second prefix position to the of described advertising of route message, GGSN finishes after the encapsulation of a described M address prefix in advertising of route message, and described advertising of route message is sent to described wireless device; Otherwise, M address prefix is packaged in successively in the M prefix position, the first prefix position to the of described advertising of route message, GGSN finishes after the encapsulation of a described M address prefix in advertising of route message, described advertising of route message is sent to described wireless device, and GGSN uses first prefix in the advertising of route message to replace prefix in the IPv6 address of described wireless device, and initiates to revise the block data protocol context modification process of described wireless device IPv6 address.
Further, said method can also have following characteristics:
The prefix assignment that described wireless device is corresponding with the first prefix position in the described advertising of route message is used for the configuration of the IPv6 address of wireless wide-area network interface to the wireless wide-area network interface, prefix corresponding to M prefix position, the second prefix position to the in the described advertising of route message distributed to the local network interface successively for the configuration of the IPv6 address of the user terminal that connects by the local network interface.
In order to solve the problems of the technologies described above, the present invention also provides a kind of wireless device, comprises address prefix quantity request unit and address prefix reception ﹠ disposal unit, described address prefix quantity request unit, and the quantity N that is used for address prefix that will application notifies to GGSN; Described address prefix reception ﹠ disposal unit is used for receiving M the address prefix that described GGSN distributes, and N and M are the integer greater than 1.
Further, above-mentioned wireless device can also have following characteristics:
Described address prefix reception ﹠ disposal unit, also be used for will be from advertising of route message the first prefix position that described GGSN receives corresponding prefix assignment be used for the configuration of the IPv6 address of wireless wide-area network interface to the wireless wide-area network interface, prefix corresponding to M prefix position, the second prefix position to the in the described advertising of route message distributed to the configuration that the local network interface is used for the IPv6 address of the user terminal that connects by the local network interface successively.
In order to solve the problems of the technologies described above, the present invention also provides a kind of Gateway GPRS Support Node, comprise the address prefix allocation units, described address prefix allocation units, behind the quantity N for the address prefix of knowing the wireless device application, determine the number of addresses M that can distribute and be M address prefix of described wireless device distribution, N and M are the integer greater than 1.
Further, above-mentioned Gateway GPRS Support Node can also have following characteristics:
Described address prefix allocation units, also be used for determining in the following manner the number of addresses M that can distribute: if the prefix quantity that described N limits greater than user contracting data then M value is defined as the prefix quantity that user contracting data limits, if described N would be less than or equal to the prefix quantity of user contracting data restriction then the M value is defined as described N.
Further, above-mentioned Gateway GPRS Support Node can also have following characteristics:
Described address prefix allocation units, when type that also be used for to determine the IPv6 address prefix of distributing for described wireless device is shared prefix, for prefix in the IPv6 address configures to described wireless device as sharing prefix, and be described wireless device configuration M-1 unique prefix; When type that also be used for to determine the IPv6 address prefix of distributing for described wireless device is unique type prefix, be preferably described wireless device configuration M unique prefix continuous and that have polymerizability, in the time of can't be for described wireless device configuration M unique prefix continuous and that have polymerizability, prefix in the described IPv6 address is configured to described wireless device as unique prefix, and be described wireless device configuration M-1 unique prefix.
In order to solve the problems of the technologies described above, the present invention also provides a kind of multiaddress prefix allocating system, comprises described wireless device and described Gateway GPRS Support Node.
Such scheme can distribute the address prefix of respective numbers for it according to different radio equipment actual needs, but reasonable distribution and use prefix resource improve systematic function.
Description of drawings
Fig. 1 is the schematic flow sheet that wireless device obtains the IPv6 address in the prior art;
Fig. 2 is the composition structural representation of the system of the multiaddress prefix assignment that provides of embodiment;
Fig. 3 is the schematic flow sheet of the method for the multiaddress prefix assignment that provides of embodiment;
Fig. 4 is the schematic flow sheet of the method for the multiaddress prefix assignment that provides in the specific embodiment.
Embodiment
As shown in Figure 2, wireless device comprises a wireless wide-area network interface (WWAN) in the multiaddress prefix allocating system, one or more local network interfaces (LAN).The WWAN mouth can be connected to Internet by the 2G/3G wireless technology; The LAN mouth is by connecting a plurality of user terminals under wired or the WIFI mode.
As shown in Figure 3, the multiaddress prefix assignment method comprises: wireless device with the quantity N of address prefix of application notify to Gateway GPRS Support Node be GGSN, the number of addresses M that described GGSN determines to distribute is also for described wireless device distributes M address prefix, and N and M are the integer greater than 1.
Wireless device notifies the quantity N of address prefix of application to the mode of GGSN: the router request message of quantity N that wireless device will carry the address prefix of described application is sent to described GGSN;
GGSN is that described wireless device distributes the mode of M address prefix to be: described GGSN will carry in the advertising of route message of M the address prefix that distributes and be sent to described wireless device.
GGSN determines that the mode of the number of addresses M that can distribute is: if the prefix quantity that described N limits greater than user contracting data then M value is defined as the prefix quantity that user contracting data limits, if described N would be less than or equal to the prefix quantity of user contracting data restriction then the M value is defined as described N.Described user contracting data is to be kept among the attaching position register HLR.
Wireless device is notified the quantity N of address prefix of application to the GGSN, obtain it from GGSN and be the IPv6 address of wireless device distribution, but from then on wireless device extracts interface identifier in the IPv6 address, ignores its prefix information.
When the type of prefix is shared prefix in the IPv6 address that GGSN determines to distribute for described wireless device, prefix in the described IPv6 address is configured to described wireless device as shared prefix, and be the individual unique prefix of described wireless device configuration M-1; And guarantee that as far as possible this M-1 unique prefix of distributing is continuous and has polymerizability.
When the type of prefix is unique type prefix in the IPv6 address that GGSN determines to distribute for described wireless device, be preferably described wireless device configuration M unique prefix continuous and that have polymerizability, in the time of can't be for described wireless device configuration M unique prefix continuous and that have polymerizability, prefix in the described IPv6 address is configured to described wireless device as unique prefix, and be described wireless device configuration M-1 unique prefix, and guarantee that as far as possible this M-1 unique prefix of distributing is continuous and has polymerizability.
The prefix of GGSN configuration is by choosing out in the GGSN prefix pond, and GGSN prefix pond is comprised of shared prefix pond and unique prefix pond, and prefix length all is 64.
Be when sharing prefix for the IPv6 address, GGSN will identify according to its IPv6 address that for wireless device is and M-1 unique prefix the PDP Context of subscriber equipment, finish external data network (PDN) and arrive radio equipment data route and forwarding.When being unique prefix for the IPv6 address, GGSN will according to its PDP Context of identifying subscriber equipment for wireless device M unique prefix, finish external data network (PDN) to radio equipment data route and forwarding.
GGSN judges whether M address prefix comprises prefix in the IPv6 address of distributing for described wireless device, if have, this prefix is packaged in the first prefix position of described advertising of route message, other M-1 address prefix is packaged in respectively in the M prefix position, the second prefix position to the of described advertising of route message, GGSN finishes after the encapsulation of a described M address prefix in advertising of route message, and described advertising of route message is sent to described wireless device; Otherwise, M address prefix is packaged in successively in the M prefix position, the first prefix position to the of described advertising of route message, GGSN finishes after the encapsulation of a described M address prefix in advertising of route message, described advertising of route message is sent to described wireless device, and GGSN uses first prefix in the advertising of route message to replace prefix in the IPv6 address of described wireless device, and initiates to revise the block data protocol context modification process of described wireless device IPv6 address.
The prefix assignment that wireless device is corresponding with the first prefix position in the described advertising of route message is used for the configuration of the IPv6 address of wireless wide-area network interface to the wireless wide-area network interface, prefix corresponding to M prefix position, the second prefix position to the in the described advertising of route message distributed to the local network interface successively for the configuration of the IPv6 address of the user terminal that connects by the local network interface.
The multiaddress prefix allocating system comprises wireless device and GGSN.Wherein, described wireless device is notified to GGSN for the quantity N of the address prefix that will apply for.The number of addresses M that described GGSN is used for determining to distribute is also for described wireless device distributes M address prefix, and N and M are the integer greater than 1.
GGSN comprises the address prefix allocation units.Behind the quantity N of this prefix assignment unit, address for the address prefix of knowing the wireless device application, determine the number of addresses M that can distribute and be M address prefix of described wireless device distribution, N and M are the integer greater than 1.The respective handling process of wireless device end in the said method is responsible in this prefix assignment unit, address.
Wireless device comprises address prefix quantity request unit and address prefix reception ﹠ disposal unit.This address prefix quantity request unit is used for the quantity N of the address prefix of application is notified to GGSN; Described address prefix reception ﹠ disposal unit is used for receiving M the address prefix that described GGSN distributes, and N and M are the integer greater than 1.This address prefix quantity request unit is responsible for the respective handling process of corresponding GGSN end in the said method.
Specific embodiment
A kind of method of a plurality of prefix assignment is provided in the specific embodiment, wireless device is by appending to its prefix quantity information of wishing application in the extension of router solicitation RS message, thereby realize distributing the address prefix of respective numbers according to the needs of different radio equipment for it, idiographic flow comprises as shown in Figure 4:
Step S401: the process of wireless device by PDP context activation gets access to GGSN for behind the IPv6 address of its distribution from network side, produces a route requests RS message, carries the parameter N that wireless device is wished the address prefix quantity of applying in this RS message.
Network is 64 to the address prefix length that wireless device distributes in the 3GPP standard, so the address prefix length of wireless device application is 64.For radio network gateway or wireless router class, its LAN side total interface comprises wired and wave point all belongs to same subnet usually, and wireless device only need to be applied for 2 prefixes, and a prefix assignment is to the WAN side, and another prefix assignment is to the LAN side.
Step S402: wireless device sends to GGSN with described RS message, request GGSN announcement address prefix.
Step S403:GGSN receives described RS message, the prefix quantity that allows according to the user contracting data fetched from HLR and the address prefix quantity of wireless device application are determined actual assignable prefix quantity M, if the prefix quantity that request prefix quantity allows greater than user contracting data then actual assignable prefix quantity M equals the prefix quantity of user contracting data permission; If request prefix quantity is less than or equal to the prefix quantity of user contracting data permission then actual assignable prefix quantity M equals the prefix quantity of wireless device application.
Because GGSN need to be wireless device distributing IP v6 address, so the prefix number that allows in the user contracting data is at least 1, otherwise GGSN can't be wireless device distributing IP v6 address.
Step S404:GGSN selects the prefix assignment strategy according to the prefix types in the IPv6 address of distributing for wireless device in the PDP activation.If it is that wireless device distributes prefix according to mixing the prefix assignment strategy that the prefix types in the described IPv6 address, then enters step S405 for sharing prefix; If the prefix types in the described IPv6 address is unique prefix, then entering step S406 is that wireless device distributes prefix according to the aggregation prefix allocation strategy.
Step S405:GGSN at first with the prefix assignment in its IPv6 address of having distributed for wireless device to wireless device, and then from GGSN prefix pond, distribute M-1 unique prefix for wireless device, for making things convenient for the address prefix polymerization, guarantee that as far as possible this M-1 of distributing unique prefix is continuous in polymerisable.
GGSN has been a shared prefix for the IPv6 address prefix that wireless device distributes, so mix in M the prefix that the prefix assignment strategy is the wireless device distribution, has one to be to share with prefix, other M-1 unique prefixes.
Step S406:GGSN at first will attempt from GGSN prefix pond distributing M continuous and polymerisable unique prefix, if be allocated successfully, GGSN with first prefix in the newly assigned M prefix as its first prefix of distributing for wireless device, and with the prefix in its substitute I Pv6 address, then initiate to revise the PDP context modification process of wireless device IPv6 address; If distribute unsuccessfully, then with the prefix of its IPv6 address of distributing for wireless device as its first prefix for the wireless device distribution, and then be that from GGSN prefix pond wireless device distributes M-1 unique prefix, guarantee that as far as possible this M-1 unique prefix of distributing is continuous in polymerisable.
For making things convenient for the address prefix polymerization, reduce number of routes among the GGSN, GGSN at first attempts distributing M continuous and polymerisable unique prefix into wireless device.For example, wireless device wishes to apply for 2 prefixes, GGSN has found 3 continuous prefix 2001:1a10:300:2/64,2001:1a10:300:3/64 and 2001:1a10:300:4/64 from unique prefix pond, because the first two prefix can aggregate into shorter prefix 2001:1a10:300:2/63, latter two continuously then can not polymerization, and then GGSN distributes to wireless device with 2001:1a10:300:2/64 and two of 2001:1a10:300:3/64; If there is not polymerisable prefix, then for wireless device distributes continuous unique prefix, such as 2001:1a10:300:5/64 and 2001:1a10:300:6/64; If continuous prefix does not exist yet, it then is unique prefix of wireless device allocation of discrete.
Step S407:GGSN checks that it is that wireless device distributes the prefix that whether comprises the IPv6 address in M the prefix, if comprise, then the prefix of IPv6 address must be encapsulated in first prefix of router advertisement RA message, a remaining M-1 prefix be encapsulated in second to M the prefix of advertising of route message; If do not comprise, first that then can be encapsulated into successively according to the allocation order of M prefix advertising of route message is in M prefix.
The router advertisement RA message that step S408:GGSN will be packaged with M prefix sends to wireless device.
Step S409: wireless device with first prefix assignment of carrying in the router advertisement RA message to the WWAN side, being used for WWAN interface IPv6 address configures automatically, with carry in the router advertisement RA message the 2nd to M prefix assignment to the LAN side, be used for the LAN mouth and the lower IPv6 address that is used in conjunction the family terminal configures automatically.
Wireless device is that IPv6 address that the WWAN mouth distributes is the interface identifier combination producing that obtained from GGSN by PDP activation by the prefix of distributing to this interface and wireless device.The IPv6 address of LAN interface is comprised of the prefix of distributing to this interface and the local interface identifier that generates.Wireless device can by the prefix that the stateless auto configuration mode will be distributed to LAN interface announce under be used in conjunction the family terminal.
Step S410:GGSN checks it is that wireless device distributes in M prefix whether comprise the prefix of IPv6 address, if do not comprise then enter step S411.
Prefix in first prefix substitute I Pv6 address in the step S411:GGSN use advertising of route message, and initiate to revise the PDP context modification process of wireless device IPv6 address.
Step S412:GGSN for the PDP Context that IPv6 address and unique prefix of wireless device distribution are identified wireless device, finishes external data network to radio equipment data route and forwarding according to it.
For mixing the prefix assignment strategy, GGSN will be according to its PDP Context of identifying subscriber equipment for IPv6 address and the individual unique prefix of M-1 of wireless device distribution.When GGSN receives IPv6 message from external data network, when in the IPv6 address of the prefix of the purpose IPv6 address of IP message or IPv6 address and wireless device or M-1 the unique prefix during any one prefix matching, GGSN can be transmitted to wireless device with this IP message routing.GGSN can carry out polymerization with M-1 unique prefix, to reduce route quantity and to improve search efficiency.
For the aggregation prefix allocation strategy, GGSN will identify according to its M unique prefix of distributing for wireless device the PDP Context of subscriber equipment.When GGSN receives IPv6 message from external data network, when in M unique prefix of the prefix of the purpose IPv6 address of IP message and wireless device during any one prefix matching, GGSN can be transmitted to wireless device with this IP message routing.GGSN can carry out polymerization with M unique prefix, to reduce route quantity and to improve search efficiency.
For example, when GGSN to user equipment allocation when 2001:1a10:300:2/64 and two prefixes of 2001:1a10:300:3/64, it is 63 prefix (being 2001:1a10:300:2/63) that GGSN can aggregate into this two each and every one prefix a length, GGSN can only carry out data route and the forwarding of wireless device with this aggregation prefix of 2001:1a10:300:2/63, do not carry out data route and forwarding at needs with 2001:1a10:300:2/64 and two prefixes of 2001:1a10:300:3/64, can reduce route quantity and improve search efficiency.
As seen, the described a plurality of address prefix distribution methods of embodiment and system carry wireless device by the extended field in router solicitation and wish the prefix quantity parameter of applying for, and GGSN carries out the address prefix distribution accordingly according to described request, thereby can distribute the address prefix of respective numbers for it according to the actual needs of different radio equipment.Therefore adopt this programme can reasonable distribution and use the prefix resource.
Need to prove, in the situation that do not conflict, the embodiment among the application and the feature among the embodiment be combination in any mutually.
Certainly; the present invention also can have other various embodiments; in the situation that do not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art can make according to the present invention various corresponding changes and distortion, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.
One of ordinary skill in the art will appreciate that all or part of step in the said method can come the instruction related hardware to finish by program, described program can be stored in the computer-readable recording medium, such as read-only memory, disk or CD etc.Alternatively, all or part of step of above-described embodiment also can realize with one or more integrated circuits.Correspondingly, each the module/unit in above-described embodiment can adopt the form of hardware to realize, also can adopt the form of software function module to realize.The present invention is not restricted to the combination of the hardware and software of any particular form.
Claims (12)
1. multiaddress prefix assignment method, wherein,
Wireless device with the quantity N of address prefix of application notify to Gateway GPRS Support Node be GGSN, described GGSN determines the number of addresses M that can distribute and for described wireless device distributes M address prefix, N and M are the integer greater than 1.
2. the method for claim 1 is characterized in that,
Wireless device notifies the quantity N of address prefix of application to the mode of GGSN: the router request message of quantity N that wireless device will carry the address prefix of described application is sent to described GGSN;
Described GGSN is that described wireless device distributes the mode of M address prefix to be: described GGSN will carry in the advertising of route message of M the address prefix that distributes and be sent to described wireless device.
3. the method for claim 1 is characterized in that,
The mode of the definite number of addresses M that can distribute of described GGSN is:
If the prefix quantity that described N limits greater than user contracting data then M value is defined as the prefix quantity that user contracting data limits is if described N is less than or equal to the prefix quantity of user contracting data restriction then the M value is defined as described N.
4. the method for claim 1 is characterized in that,
When the type of prefix is shared prefix in the IPv6 address that described GGSN determines to distribute for described wireless device, prefix in the described IPv6 address is configured to described wireless device as shared prefix, and be the individual unique prefix of described wireless device configuration M-1;
When the type of prefix is unique type prefix in the IPv6 address that described GGSN determines to distribute for described wireless device, be preferably described wireless device configuration M unique prefix continuous and that have polymerizability, in the time of can't be for described wireless device configuration M unique prefix continuous and that have polymerizability, prefix in the described IPv6 address is configured to described wireless device as unique prefix, and be described wireless device configuration M-1 unique prefix.
5. method as claimed in claim 2 is characterized in that,
Described GGSN judges whether M address prefix comprises prefix in the IPv6 address of distributing for described wireless device, if have, this prefix is packaged in the first prefix position of described advertising of route message, other M-1 address prefix is packaged in respectively in the M prefix position, the second prefix position to the of described advertising of route message, GGSN finishes after the encapsulation of a described M address prefix in advertising of route message, and described advertising of route message is sent to described wireless device; Otherwise, M address prefix is packaged in successively in the M prefix position, the first prefix position to the of described advertising of route message, GGSN finishes after the encapsulation of a described M address prefix in advertising of route message, described advertising of route message is sent to described wireless device, and GGSN uses first prefix in the advertising of route message to replace prefix in the IPv6 address of described wireless device, and initiates to revise the block data protocol context modification process of described wireless device IPv6 address.
6. the method for claim 1 is characterized in that,
The prefix assignment that described wireless device is corresponding with the first prefix position in the described advertising of route message is used for the configuration of the IPv6 address of wireless wide-area network interface to the wireless wide-area network interface, prefix corresponding to M prefix position, the second prefix position to the in the described advertising of route message distributed to the local network interface successively for the configuration of the IPv6 address of the user terminal that connects by the local network interface.
7. a wireless device is characterized in that, comprises address prefix quantity request unit and address prefix reception ﹠ disposal unit,
Described address prefix quantity request unit, the quantity N that is used for address prefix that will application notifies to GGSN;
Described address prefix reception ﹠ disposal unit is used for receiving M the address prefix that described GGSN distributes, and N and M are the integer greater than 1.
8. wireless device as claimed in claim 7 is characterized in that,
Described address prefix reception ﹠ disposal unit, also be used for will be from advertising of route message the first prefix position that described GGSN receives corresponding prefix assignment be used for the configuration of the IPv6 address of wireless wide-area network interface to the wireless wide-area network interface, prefix corresponding to M prefix position, the second prefix position to the in the described advertising of route message distributed to the configuration that the local network interface is used for the IPv6 address of the user terminal that connects by the local network interface successively.
9. a Gateway GPRS Support Node is characterized in that, comprises the address prefix allocation units,
Described address prefix allocation units behind the quantity N for the address prefix of knowing the wireless device application, are determined the number of addresses M that can distribute and are M address prefix of described wireless device distribution that N and M are the integer greater than 1.
10. Gateway GPRS Support Node as claimed in claim 9 is characterized in that,
Described address prefix allocation units, also be used for determining in the following manner the number of addresses M that can distribute: if the prefix quantity that described N limits greater than user contracting data then M value is defined as the prefix quantity that user contracting data limits, if described N would be less than or equal to the prefix quantity of user contracting data restriction then the M value is defined as described N.
11. Gateway GPRS Support Node as claimed in claim 9 is characterized in that,
Described address prefix allocation units, when type that also be used for to determine the IPv6 address prefix of distributing for described wireless device is shared prefix, for prefix in the IPv6 address configures to described wireless device as sharing prefix, and be described wireless device configuration M-1 unique prefix; When type that also be used for to determine the IPv6 address prefix of distributing for described wireless device is unique type prefix, be preferably described wireless device configuration M unique prefix continuous and that have polymerizability, in the time of can't be for described wireless device configuration M unique prefix continuous and that have polymerizability, prefix in the described IPv6 address is configured to described wireless device as unique prefix, and be described wireless device configuration M-1 unique prefix.
12. a multiaddress prefix allocating system is characterized in that, comprises claim 7 or 8 described wireless devices and claim 9,10 or 11 described Gateway GPRS Support Nodes.
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| CN201110200360.2A CN102892108B (en) | 2011-07-18 | 2011-07-18 | Multiple address prefix distributing method and system |
| PCT/CN2011/079956 WO2012155424A1 (en) | 2011-07-18 | 2011-09-21 | Method and system for multiple address-prefixes assignment |
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| CN113660358A (en) * | 2021-08-20 | 2021-11-16 | 芯河半导体科技(无锡)有限公司 | Method for distributing different Ipv6PD prefixes to drop-on equipment by gateway |
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| US20100080206A1 (en) * | 2007-02-19 | 2010-04-01 | Katsuhiko Yamada | Autoconfiguration system for wireless sensor network and its method, and gateway apparatus for wireless sensor network |
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| CN113660358A (en) * | 2021-08-20 | 2021-11-16 | 芯河半导体科技(无锡)有限公司 | Method for distributing different Ipv6PD prefixes to drop-on equipment by gateway |
| CN113660358B (en) * | 2021-08-20 | 2023-06-20 | 芯河半导体科技(无锡)有限公司 | Method for gateway to allocate different IPv6PD prefixes for down-hanging equipment |
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| CN102892108B (en) | 2017-04-26 |
| WO2012155424A1 (en) | 2012-11-22 |
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