CN103916493A - IP address field distribution method and device - Google Patents
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- CN103916493A CN103916493A CN201410150511.1A CN201410150511A CN103916493A CN 103916493 A CN103916493 A CN 103916493A CN 201410150511 A CN201410150511 A CN 201410150511A CN 103916493 A CN103916493 A CN 103916493A
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Abstract
The invention discloses an IP address field distribution method and device which are used for solving the problem that in the prior art, an effective IPv4 address field to which a PDN GW side can directly have access cannot be distributed to UE. The IP address field distribution method comprises the steps of receiving a PDN connecting request issued by UE, sending the PDN connecting request to a PDN GW, receiving IPv4 address field information, and sending the IPv4 address field information to the UE, wherein the IPv4 address field information is fed back by the PDN GW based on the PDN connecting request and carries a PDN address prefix. Due to the fact that the method comprising the step of newly adding a PDN address prefix field in a related IE in GTPC signaling and NAS signaling is adopted, the effective IPv4 address field to which a network side can directly have access is distributed to the UE and can be used by the UE and sub terminals belonging to the UE, and the network side conducts topology management or remote operation maintenance on all the UE belonging to the network side is achieved.
Description
Technical field
The present invention relates to the communications field, relate in particular to a kind of IP address field distribution method and device.
Background technology
At Long Term Evolution (Long Term Evolution, LTE) in system, the IP address of UE is based on packet data network (Packet Data Network at present, PDN) connection distributes, according to APN (the Access Point Name of UE request, APN) by packet data gateway (PDN Gateway, PDN GW) network element distributes by local IP address pool, or after obtaining by third-party server, as DHCP (Dynamic Host Configuration Protocol, DHCP) server, Diameter server or Radius server etc., by Mobility Management Entity (Mobile Management Entity, MME) Non-Access Stratum (Non-Access Stratum, NAS) signaling message carries to UE, under connecting, a PDN of UE can have at most two IP addresses, an i.e. Internet Protocol Version 4 (Internet Protocol version4, IPv4) address, an IPv6 address, under normal circumstances, a PDN of UE connects only needs an IP address.
Because, PDN GW distinguishes and is connected to PDN's different on PDN GW according to the APN of PDN, only have in the time that UE initiates another PDN connection request, PDN GW just can distribute one or two IP addresses to UE by the APN based on this another PDN again, wherein, the IP address range that each PDN distributes to UE is different, in connecting for a PDN of UE request, UE only can be assigned with one or two IP address (with an IPv4 address, an IPv6 address), can communicate with this PDN.
Along with the application of LTE technology and universal, in wisdom community and enterprise, public institution can pass through customer terminal equipment (Customer Premise Equipment, CPE) or wireless router give one section of IPv4 address of each terminal distribution of lower extension, but PDN GW side cannot know that these distribute to the IPv4 address that each terminal is used, and also just cannot directly access this IPv4 address.Therefore, need to carry out to whole network the scene of Topology Management, remote operation maintaining for those wisdom communities, production of hydrocarbons etc., in the time that PDNGW side cannot directly be accessed the IPv4 address of each terminal of hanging under CPE or wireless router, just cannot realize the Topology Management of whole network and remote operation maintaining etc. planning.
If what PDN GW distributed to UE is IPv6 address, can offer in theory the IP address field that PDNGW side of UE can directly be accessed, but because IPv6 network application is at present less, require high to UE, need to upgrade a large amount of network communication equipments, therefore cost is very high, is difficult at short notice promote.
And under most of scenes, IPv4 address has enough met networking requirement, in sum, the technology of distributing based on current IP address, also cannot be embodied as UE and distribute an effective IPv4 address field that PDN GW side can directly be accessed.
Summary of the invention
The embodiment of the present invention provides a kind of method and device for terminal distribution IP address field, cannot be that UE distributes an effective IPv4 address field that PDN GW side can directly be accessed in order to solve existence in prior art, thereby cannot realize the problem of all UE in network being carried out to Topology Management or remote operation maintaining etc.
The concrete scheme that the embodiment of the present invention provides is as follows:
First aspect, a kind of IP address field distribution method, the method comprises:
Receive the grouped data network PDN connection request that user equipment (UE) is initiated;
PDN connection request is sent to PDN Gateway, and receives the IPv4 address field information that carries PDN address prefix of PDN Gateway based on PDN connection request feedback, and IPv4 address field information is sent to UE.
The method providing by the embodiment of the present invention, newly-increased PDN address prefix field in relevant IE in GTPC signaling and NAS signaling, address number while being used for being expressed as this distributing IP v4 address, be embodied as the effective IPv4 address field that network side of terminal distribution can directly be accessed, for this UE and belong to the sub-terminal of this UE, thereby realize network side, all UE of its subordinate are carried out to Topology Management or remote operation maintaining.
In conjunction with first aspect, in the possible implementation of the first, receive the IPv4 address field information that carries PDN address prefix of PDN Gateway based on PDN connection request feedback, and IPv4 address field information is sent to UE, comprising:
Receive PDN Gateway by the IPv4 address field information that carries PDN address prefix GPRS Tunnel Protocol chain of command GTPC signalling, based on PDN connection request feedback, wherein, PDN address prefix is used to indicate PDN Gateway and distributes to the number of the IPv4 address of UE;
By Non-Access Stratum NAS signaling, IPv4 address field information is sent to UE.
In conjunction with the possible implementation of the first of first aspect, in the possible implementation of the second, by GTPC signaling and NAS signalling IPv4 address field information, comprising:
It is in the field of a byte that the PDN address prefix comprising in IPv4 address field information is recorded in to a length newly-increased in GTPC signaling and NAS signaling; Or,
The PDN address prefix comprising in IPv4 address field information is recorded in to distributing in first byte of field of the IP v4 address of UE for storing PDN Gateway in GTPC signaling and NAS signaling.
By this possible execution mode, PDN address prefix field is arranged on to distributing to for storing PDN Gateway in first byte of field of the IP v4 address of UE in GTPC signaling and NAS signaling, the improvement to original signaling can be reduced, and signaling can be saved.
In conjunction with the possible implementation of the second of first aspect, in the third possible implementation, newly-increased length is after the field of a byte is arranged in GTPC signaling and NAS signaling end field.
By this possible execution mode, newly-increased PDN prefix field is arranged in GTPC signaling and NAS signaling after the field of end, can make it have better forward and backward compatibility.
In conjunction with first aspect and above-mentioned any one possible implementation, in the 4th kind of possible implementation, after IPv4 address field information is sent to UE, comprising:
By IP v4 address assignment to UE, and by each IPv4 address assignment IPv4 address field information indication, except IP v4 address to the sub-terminal of any one unallocated IPv4 address that belongs to UE.
Second aspect, a kind of IP address field distributor, this device comprises:
Receiving element, the grouped data network PDN connection request of initiating for receiving user equipment (UE);
Allocation unit, for PDN connection request is sent to PDN Gateway, and receives the IPv4 address field information that carries PDN address prefix of PDN Gateway based on PDN connection request feedback, and IPv4 address field information is sent to UE.
The device providing by the embodiment of the present invention, newly-increased PDN address prefix field in relevant IE in GTPC signaling and NAS signaling, address number while being used for being expressed as this distributing IP v4 address, be embodied as the effective IPv4 address field that network side of terminal distribution can directly be accessed, for this UE and belong to the sub-terminal of this UE, thereby realize network side, all UE of its subordinate are carried out to Topology Management or remote operation maintaining.
In conjunction with second aspect, in the possible implementation of the first, allocation unit specifically for:
Receive PDN Gateway by the IPv4 address field information that carries PDN address prefix GPRS Tunnel Protocol chain of command GTPC signalling, based on PDN connection request feedback, wherein, PDN address prefix is used to indicate PDN Gateway distributes to the number of the IPv4 address of UE, and by Non-Access Stratum NAS signaling, IPv4 address field information is sent to UE.
In conjunction with the possible implementation of the first of second aspect, in the possible implementation of the second, allocation unit specifically for:
It is in the field of a byte that the PDN address prefix comprising in IPv4 address field information is recorded in to a length newly-increased in GTPC signaling and NAS signaling; Or, the PDN address prefix comprising in IPv4 address field information is recorded in to distributing in first byte of field of the IP v4 address of UE for storing PDN Gateway in GTPC signaling and NAS signaling.
By this possible execution mode, PDN address prefix field is arranged on to distributing to for storing PDN Gateway in first byte of field of the IP v4 address of UE in GTPC signaling and NAS signaling, the improvement to original signaling can be reduced, and signaling can be saved.
In conjunction with the possible implementation of the second of second aspect, in the third possible implementation, newly-increased length is after the field of a byte is arranged in GTPC signaling and NAS signaling end field.
By this possible execution mode, newly-increased PDN prefix field is arranged in GTPC signaling and NAS signaling after the field of end, can make it have better forward and backward compatibility.
In conjunction with second aspect and above-mentioned any one possible implementation, in the 4th kind of possible implementation, allocation unit also for, after IPv4 address field information is sent to UE, by IP v4 address assignment to UE, and by each IPv4 address assignment IPv4 address field information indication, except IP v4 address to the sub-terminal of any one unallocated IPv4 address that belongs to UE.
The third aspect, a kind of Mobility Management Entity MME equipment, comprising:
Receiving port, the grouped data network PDN connection request of initiating for receiving user equipment (UE);
Processor, for PDN connection request is sent to PDN Gateway, and receives the IPv4 address field information that carries PDN address prefix of PDN Gateway based on PDN connection request feedback, and IPv4 address field information is sent to UE.
The equipment providing by the embodiment of the present invention, newly-increased PDN address prefix field in relevant IE in GTPC signaling and NAS signaling, address number while being used for being expressed as this distributing IP v4 address, be embodied as the effective IPv4 address field that network side of terminal distribution can directly be accessed, for this UE and belong to the sub-terminal of this UE, thereby realize network side, all UE of its subordinate are carried out to Topology Management or remote operation maintaining.
In conjunction with the third aspect, in the possible implementation of the first, processor specifically for:
Receive PDN Gateway by the IPv4 address field information that carries PDN address prefix GPRS Tunnel Protocol chain of command GTPC signalling, based on PDN connection request feedback, wherein, PDN address prefix is used to indicate PDN Gateway distributes to the number of the IPv4 address of UE, and by Non-Access Stratum NAS signaling, IPv4 address field information is sent to UE.
In conjunction with the possible implementation of the first of the third aspect, in the possible implementation of the second, processor specifically for:
It is in the field of a byte that the PDN address prefix comprising in IPv4 address field information is recorded in to a length newly-increased in GTPC signaling and NAS signaling; Or, the PDN address prefix comprising in IPv4 address field information is recorded in to distributing in first byte of field of the IP v4 address of UE for storing PDN Gateway in GTPC signaling and NAS signaling.
By this possible execution mode, PDN address prefix field is arranged on to distributing to for storing PDN Gateway in first byte of field of the IP v4 address of UE in GTPC signaling and NAS signaling, the improvement to original signaling can be reduced, and signaling can be saved.
In conjunction with the possible implementation of the second of the third aspect, in the third possible implementation, newly-increased length is after the field of a byte is arranged in GTPC signaling and NAS signaling end field.
By this possible execution mode, newly-increased PDN prefix field is arranged in GTPC signaling and NAS signaling after the field of end, can make it have better forward and backward compatibility.
In conjunction with the third aspect and above-mentioned any one possible implementation, in the 4th kind of possible implementation, processor also for, after IPv4 address field information is sent to UE, by IP v4 address assignment to UE, and by each IPv4 address assignment IPv4 address field information indication, except IP v4 address to the sub-terminal of any one unallocated IPv4 address that belongs to UE.
Accompanying drawing explanation
Fig. 1 is the flow chart of the IP address field distribution method in the embodiment of the present invention;
Fig. 2 is the structure chart of the IP address field distributor in the embodiment of the present invention;
Fig. 3 is the structure chart of the Mobility Management Entity MME equipment in the embodiment of the present invention.
Embodiment
Be an IP that PDN GW side can directly be accessed of UE distribution in order to provide a kind of
v4 address fields, thereby realize network side all UE of its subordinate carried out the implementation of Topology Management or remote operation maintaining, the embodiment of the present invention provides a kind of IP address field distribution method and device, can be by information element (the Information Element in expansion related signaling message, IE), the mode of newly-increased PDN address prefix (PDN Address Prefix) field is the IPv4 address field that UE and one section of network side of the sub-terminal distribution that belongs to this UE can directly be accessed.Below in conjunction with Figure of description, the preferred embodiments of the present invention are described.
Consult shown in Fig. 1, the idiographic flow of IP address field distribution method is as follows:
Step 100:MME receives the grouped data network PDN connection request that user equipment (UE) is initiated;
PDN connection request is sent to PDN Gateway by step 110:MME, and receive the IPv4 address field information that carries PDN address prefix of PDN Gateway based on PDN connection request feedback, and IPv4 address field information is sent to UE.
Concrete, in step 110, MME receives PDN Gateway by the IPv4 address field information that carries PDN address prefix GPRS Tunnel Protocol chain of command (GRPS Tunnelling Protocol for Control plane, GTPC) signalling, based on PDN connection request feedback; And by NAS signaling, IPv4 address field information is sent to UE.Wherein, this PDN address prefix is used to indicate PDN Gateway distributes to the number of the IPv4 address of UE, and above-mentioned IP v4 address field information is used to indicate in GTPC signaling and the information relevant to IP address assignment in NAS signaling.
During by GTPC signaling and NAS signalling IPv4 address field information, it is in the field of a byte that the PDN address prefix comprising in IPv4 address field information is recorded in to a length newly-increased in GTPC signaling and NAS signaling; Or, the PDN address prefix comprising in IPv4 address field information is recorded in to distributing in first byte of field of the IP v4 address of UE for storing PDN Gateway in GTPC signaling and NAS signaling.
In following examples, first GTPC signaling message is introduced.Message name relevant to IP address assignment process in GTPC signaling is for creating conversational response (Create Session Response) message, and the IE relevant to IP address assignment information is PDN address assignment (PDN Address Allocation, PAA), this PAA is an IE in Create Session Response message, table 1 is the message format of Create Session Response message, and the PAA wherein comprising, be the part that in following message format, overstriking is illustrated:
Table 1
In the embodiment of the present invention, the definition that increases the PAA of PDN address prefix has following two kinds of modes, it is in the field of a byte that the first is recorded in a length newly-increased in GTPC signaling by the PDN address prefix comprising in IPv4 address field information, it has increased byte n+5 as PDN address prefix field (being the part of overstriking signal), defines as shown in table 2:
Table 2
In the time that PDN type (PDN Type) is designated as IPv4 type, PDN Address and Prefix field takies byte 6 to byte 9, is used for depositing an IPv4 address.Preferably, in the embodiment of the present invention, newly-increased length is that the PDN address prefix field of a byte is in PAA after end field PDN Address andPrefix, be byte n+5, but the position of new field is not limited only in PAA after end field PDN Address and Prefix in the embodiment of the present invention, it is the consideration of the forward and backward compatibility based on to existing PAA IE message after end field PDN Address and Prefix that the position of new field is arranged in PAA IE.According to the related protocol agreement of GTPC signaling and NAS signaling, if recipient according to IE format analysis to the field that can not correctly identify, can skip, ignore and resolve this field, therefore, newly-increased field is arranged to end field, for the network element and the terminal that there is no agreement upgrading, when it resolves IE, can not produce any impact.
In order to save GTPC signaling, reduce the change to GTPC signaling, can also adopt the second definition mode, be recorded in distributing to for storing PDN Gateway in first byte of field of the IP v4 address of UE in GTPC signaling by the PDN address prefix comprising in IPv4 address field information, it has increased a byte in PDNAddress and Prefix field, wherein, the first byte is used for recording PDN address prefix (being the part of overstriking signal), other bytes (being that byte 7 is to byte n+5) storage PDN Gateway is distributed to the IP v4 address PDN Address and Prefix of UE, define as shown in table 3:
Table 3
In the time that PDN Type is designated as IPv4 type, PDN Address and Prefix and PDN address prefix are shared a field, take 5 bytes, wherein, first character saves to deposit PDN address prefix, is also mask figure place, and follow-up four bytes are used for depositing an IPv4 address.For example, if for 192.168.20.1 of UE distribution is to the IPv4 address field of 192.168.20.31, in the shared field of PDN Address and Prefix and PDN address prefix, first byte is set to 27, and follow-up four bytes are set to 192.168.20.1.
Following examples will be described in detail the modification of NAS signaling.
Message name relevant to IP address assignment process in NAS signaling is for activating acquiescence evolved packet system bearer context request (Activate default EPS bearer context request) message, and the IE relevant to IP address assignment information is PDN address (PDN Address), this PDN address is an IE in Activatedefault EPS bearer context request message, table 4 is the message format of Activate default EPS bearer context request message, and the PDN address wherein comprising, be the part of overstriking signal in following message format:
Table 4
Wherein, in the embodiment of the present invention, the definition that increases the PDN address of PDN address prefix has following two kinds of modes, it is in the field of a byte that the first is recorded in a length newly-increased in NAS signaling by the PDN address prefix comprising in IPv4 address field information, it has increased byte 16 as PDN address prefix field (being the part of overstriking signal), defines as shown in table 5:
Table 5
In the time that PDN types value (PDN Type value) is designated as IPv4 type, PDN address information (PDN Address information) field takies byte 4 to byte 7, is used for depositing an IPv4 address.Preferably, in the embodiment of the present invention, newly-increased length is that the PDN address prefix field of a byte is in PDN Address after end field PDN address information, it is byte 16, but in the embodiment of the present invention, the position of new field is not limited only in PDN Address after end field PDN address information, with the position of new field is arranged on to end field PDN Address and Prefix in PAA IE after identical reason, in NAS signaling, the setting of PDN address prefix position is the consideration of the forward and backward compatibility based on to existing PDN Address message.
In order to save NAS signaling, reduce the change to NAS signaling, can also adopt the second definition mode, be recorded in distributing to for storing PDN Gateway in first byte of field of the IP v4 address of UE in NAS signaling by the PDN address prefix comprising in IPv4 address field information, it has increased a byte in PDNaddress information field, wherein, the first byte is used for recording PDN address prefix (being the part of overstriking signal), other bytes (being that byte 5 is to byte 8) storage PDN Gateway is distributed to the IP v4 address PDN address information of UE, define as shown in table 6:
Table 6
In the time that PDN Type value is designated as IPv4 type, PDN address information and PDN address prefix are shared a field, take 5 bytes, wherein, first character saves to deposit PDN address prefix, is also mask figure place, and follow-up four bytes are used for depositing an IPv4 address.For example, if for 192.168.20.1 of UE distribution is to the IPv4 address field of 192.168.20.31, in the shared field of PDN address information and PDN address prefix, first byte is set to 27, and follow-up four bytes are set to 192.168.20.1.If do not need the address field for UE distributing IP v4,, only for UE distributes an IPv4 address, the value of PDN address prefix is set to 0.
By above-mentioned be that two IE in signaling have increased a field newly, as PDN address prefix, by indicated concrete IPv4 address in the PDN address information comprising in the PDN Address and Prefix that comprises in GTPC signaling and NAS signaling, it is the IPv4 address field that UE distributes that MME and UE can obtain PDN GW so.The embodiment of the present invention for be that the situation that IPv4 address field distributes designs, therefore, this PDN address prefix field only exists in the time that PDN Type is IPv4 type.
After IPv4 address field information is sent to UE by MME, by IP v4 address assignment to UE, and by each IPv4 address assignment IPv4 address field information indication, except IP v4 address to the sub-terminal of any one unallocated IPv4 address that belongs to UE.
For example, the IPv4 address of distributing for UE of indicating in PDN address information and PDN Address and Prefix is 192.168.20.1, PDN address prefix is 27 o'clock, can represent to UE distributed take 192.168.20.1 as IP v4 address, the IPv4 address field of length as 31, from 192.168.20.1 to 192.168.20.31.Wherein relate to the computing of mask, mask is 32bits, and PDN address prefix is 27 o'clock,, for representing that mask is 27bits, therefore, has 27 bit word to be retained, and 5 remaining bit word are used for representing 2
5individual IPv4 address, what wherein code word was full 0 does not count, and therefore, the effective IPv4 address of this sub-distribution is 31.Above-mentioned IP v4 address represent PDN GW for UE initiate PDN connect the IPv4 address of distributing, remaining IPv4 address can be for belonging to sub-terminal distribution and the use of this UE.
Based on same inventive concept, the IP address field distribution method providing according to the above embodiment of the present invention, correspondingly, another embodiment of the present invention also provides a kind of IP address field distributor, and the structural representation of this device as shown in Figure 2, specifically comprises:
Receiving element 200, the grouped data network PDN connection request of initiating for receiving user equipment (UE);
Allocation unit 210, for PDN connection request is sent to PDN Gateway, and receives the IPv4 address field information that carries PDN address prefix of PDN Gateway based on PDN connection request feedback, and IPv4 address field information is sent to UE.
Allocation unit 210 specifically for: receive PDN Gateway by the IPv4 address field information that carries PDN address prefix GPRS Tunnel Protocol chain of command GTPC signalling, based on PDN connection request feedback, wherein, PDN address prefix is used to indicate PDN Gateway distributes to the number of the IPv4 address of UE, and by Non-Access Stratum NAS signaling, IPv4 address field information is sent to UE.
Allocation unit 210 specifically for: it is in the field of a byte that the PDN address prefix comprising in IPv4 address field information is recorded in GTPC signaling and NAS signaling to a newly-increased length; Or, the PDN address prefix comprising in IPv4 address field information is recorded in to distributing in first byte of field of the IP v4 address of UE for storing PDN Gateway in GTPC signaling and NAS signaling.
Newly-increased length is after the field of a byte is arranged in GTPC signaling and NAS signaling end field.
Allocation unit 210 also for, after IPv4 address field information is sent to UE, by IP v4 address assignment to UE, and by each IPv4 address assignment IPv4 address field information indication, except IP v4 address to the sub-terminal of any one unallocated IPv4 address that belongs to UE.
Based on same inventive concept, the IP address field distribution method providing according to the above embodiment of the present invention, correspondingly, another embodiment of the present invention also provides a kind of Mobility Management Entity MME equipment, and the structural representation of this equipment as shown in Figure 3, specifically comprises:
Receiving port 300, the grouped data network PDN connection request of initiating for receiving user equipment (UE);
Processor 310, is sent to PDN Gateway by PDN connection request, and receives the IPv4 address field information that carries PDN address prefix of PDN Gateway based on PDN connection request feedback, and IPv4 address field information is sent to UE.
Processor 310 specifically for: receive PDN Gateway by the IPv4 address field information that carries PDN address prefix GPRS Tunnel Protocol chain of command GTPC signalling, based on PDN connection request feedback, wherein, PDN address prefix is used to indicate PDN Gateway distributes to the number of the IPv4 address of UE, and by Non-Access Stratum NAS signaling, IPv4 address field information is sent to UE.
Processor 310 specifically for: it is in the field of a byte that the PDN address prefix comprising in IPv4 address field information is recorded in GTPC signaling and NAS signaling to a newly-increased length; Or, the PDN address prefix comprising in IPv4 address field information is recorded in to distributing in first byte of field of the IP v4 address of UE for storing PDN Gateway in GTPC signaling and NAS signaling.
Newly-increased length is after the field of a byte is arranged in GTPC signaling and NAS signaling end field.
Processor 310 also for, after IPv4 address field information is sent to UE, by IP v4 address assignment to UE, and by each IPv4 address assignment IPv4 address field information indication, except IP v4 address to the sub-terminal of any one unallocated IPv4 address that belongs to UE.
In sum, the scheme that the embodiment of the present invention provides, by newly-increased PDN address prefix field in the relevant IE in GTPC signaling and NAS signaling, address number while being used for being expressed as this distributing IP v4 address, be embodied as the effective IPv4 address field that network side of terminal distribution can directly be accessed, for this UE and belong to the sub-terminal of this UE, thereby realize network side, all UE of its subordinate are carried out to Topology Management or remote operation maintaining; Preferably, PDN address prefix field is arranged on to distributing in first byte of field of the IP v4 address of UE for storing PDN Gateway in GTPC signaling and NAS signaling, can reduces the improvement to original signaling, and can save signaling; On the other hand, newly-increased PDN prefix field is arranged in GTPC signaling and NAS signaling after the field of end, can makes it have better forward and backward compatibility.
Obviously, those skilled in the art can carry out various changes and modification and not depart from the spirit and scope of the present invention the present invention.Like this, if within of the present invention these are revised and modification belongs to the scope of the claims in the present invention and equivalent technologies thereof, the present invention is also intended to comprise these changes and modification interior.
Claims (15)
1. an IP address field distribution method, is characterized in that, described method comprises:
Receive the grouped data network PDN connection request that user equipment (UE) is initiated;
Described PDN connection request is sent to PDN Gateway, and receives the IPv4 address field information that carries PDN address prefix of PDN Gateway based on described PDN connection request feedback, and described IPv4 address field information is sent to UE.
2. the method for claim 1, is characterized in that, receives the IPv4 address field information that carries PDN address prefix of PDN Gateway based on described PDN connection request feedback, and described IPv4 address field information is sent to UE, comprising:
Receive PDN Gateway by the IPv4 address field information that carries PDN address prefix GPRS Tunnel Protocol chain of command GTPC signalling, based on described PDN connection request feedback, wherein, described PDN address prefix is used to indicate PDN Gateway and distributes to the number of the IPv4 address of UE;
By Non-Access Stratum NAS signaling, described IPv4 address field information is sent to described UE.
3. method as claimed in claim 2, is characterized in that, by IPv4 address field information described in described GTPC signaling and described NAS signalling, comprising:
It is in the field of a byte that the described PDN address prefix comprising in described IPv4 address field information is recorded in to a length newly-increased in described GTPC signaling and described NAS signaling; Or,
The described PDN address prefix comprising in described IPv4 address field information is recorded in to distributing in first byte of field of the IP v4 address of described UE for storing described PDN Gateway in described GTPC signaling and described NAS signaling.
4. method as claimed in claim 3, is characterized in that, after the field that described newly-increased length is a byte is arranged in described GTPC signaling and described NAS signaling end field.
5. the method as described in claim 1-4 any one, is characterized in that, after described IPv4 address field information is sent to UE, comprising:
Give described UE by described IP v4 address assignment, and the sub-terminal of giving any one the unallocated IPv4 address that belongs to described UE by indication, except described IP v4 address described IPv4 address field information each IPv4 address assignment.
6. an IP address field distributor, is characterized in that, described device comprises:
Receiving element, the grouped data network PDN connection request of initiating for receiving user equipment (UE);
Allocation unit, for described PDN connection request is sent to PDN Gateway, and receives the IPv4 address field information that carries PDN address prefix of PDN Gateway based on described PDN connection request feedback, and described IPv4 address field information is sent to UE.
7. device as claimed in claim 6, is characterized in that, described allocation unit specifically for:
Receive PDN Gateway by the IPv4 address field information that carries PDN address prefix GPRS Tunnel Protocol chain of command GTPC signalling, based on described PDN connection request feedback, wherein, described PDN address prefix is used to indicate PDN Gateway distributes to the number of the IPv4 address of UE, and by Non-Access Stratum NAS signaling, described IPv4 address field information is sent to described UE.
8. device as claimed in claim 7, is characterized in that, described allocation unit specifically for:
It is in the field of a byte that the described PDN address prefix comprising in described IPv4 address field information is recorded in to a length newly-increased in described GTPC signaling and described NAS signaling; Or, the described PDN address prefix comprising in described IPv4 address field information is recorded in to distributing in first byte of field of the IP v4 address of described UE for storing described PDN Gateway in described GTPC signaling and described NAS signaling.
9. device as claimed in claim 8, is characterized in that, after the field that described newly-increased length is a byte is arranged in described GTPC signaling and described NAS signaling end field.
10. the device as described in claim 6-9 any one, it is characterized in that, described allocation unit also for, after described IPv4 address field information is sent to UE, give described UE by described IP v4 address assignment, and the sub-terminal of giving any one the unallocated IPv4 address that belongs to described UE by indication, except described IP v4 address described IPv4 address field information each IPv4 address assignment.
11. 1 kinds of Mobility Management Entity MME equipment, is characterized in that, comprising:
Receiving port, the grouped data network PDN connection request of initiating for receiving user equipment (UE);
Processor, for described PDN connection request is sent to PDN Gateway, and receives the IPv4 address field information that carries PDN address prefix of PDN Gateway based on described PDN connection request feedback, and described IPv4 address field information is sent to UE.
12. equipment as claimed in claim 11, is characterized in that, described processor specifically for:
Receive PDN Gateway by the IPv4 address field information that carries PDN address prefix GPRS Tunnel Protocol chain of command GTPC signalling, based on described PDN connection request feedback, wherein, described PDN address prefix is used to indicate PDN Gateway distributes to the number of the IPv4 address of UE, and by Non-Access Stratum NAS signaling, described IPv4 address field information is sent to described UE.
13. equipment as claimed in claim 12, is characterized in that, described processor specifically for:
It is in the field of a byte that the described PDN address prefix comprising in described IPv4 address field information is recorded in to a length newly-increased in described GTPC signaling and described NAS signaling; Or, the described PDN address prefix comprising in described IPv4 address field information is recorded in to distributing in first byte of field of the IP v4 address of described UE for storing described PDN Gateway in described GTPC signaling and described NAS signaling.
14. equipment as claimed in claim 13, is characterized in that, after the field that described newly-increased length is a byte is arranged in described GTPC signaling and described NAS signaling end field.
15. equipment as described in claim 11-13 any one, it is characterized in that, described processor also for, after described IPv4 address field information is sent to UE, give described UE by described IP v4 address assignment, and the sub-terminal of giving any one the unallocated IPv4 address that belongs to described UE by indication, except described IP v4 address described IPv4 address field information each IPv4 address assignment.
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