CN106487543A - Methods, devices and systems for dynamic release IPv4 address - Google Patents
Methods, devices and systems for dynamic release IPv4 address Download PDFInfo
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- CN106487543A CN106487543A CN201510530362.6A CN201510530362A CN106487543A CN 106487543 A CN106487543 A CN 106487543A CN 201510530362 A CN201510530362 A CN 201510530362A CN 106487543 A CN106487543 A CN 106487543A
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Abstract
The present invention discloses a kind of methods, devices and systems for dynamic release IPv4 address.The IPv4 address utilization of the double stack user terminal of wherein PGW monitoring, if the unused time of IPv4 address exceedes predetermined threshold, then send IPv4 address to double stack user terminals and actively discharge information, so that double stack user terminals discharge described IPv4 address, after receiving the IPv4 address releasing request that double stack user terminals send, reclaim described IPv4 address.The present invention passes through to extend DHCPForceRenew message, carries IPv4 address release mark in DHCPForceRenew message, thus can achieve the idle IPv4 address individually being discharged double stack user terminals by network side.The present invention realizes simplicity, and the utilization ratio of IPv4 address resource can be greatly improved.
Description
Technical field
The present invention relates to the communications field, particularly to a kind of side for dynamic release IPv4 address
Method, device and system.
Background technology
EPC (Evolved Packet Core, the packet-based core networks of evolution) is for IPv4/IPv6
The user that double stacks access provides delay IPv4 address distribution, you can with user's attaching process
In only distribution IPv6 address, wait user to be actually needed using passing through DHCP during IPv4 again
(Dynamic Host Control Protocol, Dynamic Host Control Protocol) mode is distributed for user
IPv4 address.
After double stack users obtain IPv4 address, IPv4 address and IPv6 address will be taken simultaneously.Net
Network side cannot actively be gone to discharge IPv4 address, except nonterminal actively initiates release.For always online
Scene, even if the terminal long period does not use IPv4, also will not discharge IPv4 address, cause IPv4
The long-term occupancy of address, wastes IPv4 address resource in short supply.
There is no good solution currently for this problem, can only be reused by private address,
Or the method such as public network address private is delaying the consumption of IPv4.
Content of the invention
The embodiment of the present invention provides a kind of method for dynamic release IPv4 address, device and is
System.Discharge the idle IPv4 address of double stack users by network side, IPv4 ground can be effectively improved
The utilization ratio of location resource.
According to an aspect of the present invention, provide a kind of method for dynamic release IPv4 address,
Including：
The IPv4 address utilization of the double stack user terminal of monitoring；
If the unused time of IPv4 address exceedes predetermined threshold, send to double stack user terminals
IPv4 address actively discharges information, so that double stack user terminal release IPv4 address；
After receiving the IPv4 address releasing request that double stack user terminals send, reclaim IPv4 ground
Location.
In one embodiment, active release information in IPv4 address disappears for DHCPForceRenew
Breath, wherein in the vendor-encapsulated-options domain of DHCPForceRenew message
In carry IPv4 address release mark.
In one embodiment, IPv4 address releasing request is DHCPRelease message；
After receiving the IPv4 address releasing request that double stack user terminals send, reclaim IPv4 ground
The step of location includes：
After receiving the DHCPRelease message that double stack user terminals send, by IPv4 address
It is labeled as unallocated；
Wherein double stack user terminals carry in being capable of identify that DHCPForceRenew message
DHCPRelease message is sent in the case of the release mark of IPv4 address.
In one embodiment, if the DHCPRequest receiving double stack user terminals transmissions disappears
Breath, then carry out renewing process to IPv4 address, and no longer sends IPv4 ground to double stack user terminals
Location actively discharges information；
Wherein double stack user terminals carry in can not identifying DHCPForceRenew message
DHCPRequest message is sent in the case of the release mark of IPv4 address.
In one embodiment, after double stack user terminals access EPC, for double stack user terminals
Distribution IPv4 address.
According to a further aspect in the invention, provide a kind of PDN for dynamic release IPv4 address
Gateway, including monitoring unit, interface unit and address administration unit, wherein：
Monitoring unit, for monitoring the IPv4 address utilization of double stack user terminals；
Interface unit, for the monitored results according to monitoring unit, if not the using of IPv4 address
Time exceedes predetermined threshold, then send IPv4 address to double stack user terminals and actively discharge information,
So that double stack user terminals discharge IPv4 address；
Address administration unit, for receiving, in interface unit, the IPv4 that double stack user terminals send
After the releasing request of address, reclaim IPv4 address.
In one embodiment, active release information in IPv4 address disappears for DHCPForceRenew
Breath, wherein in the vendor-encapsulated-options domain of DHCPForceRenew message
In carry IPv4 address release mark.
In one embodiment, IPv4 address releasing request is DHCPRelease message；
Address administration unit specifically receives what double stack user terminals sent in interface unit
After DHCPRelease message, IPv4 address mark is unallocated；
Wherein double stack user terminals carry in being capable of identify that DHCPForceRenew message
DHCPRelease message is sent in the case of the release mark of IPv4 address.
In one embodiment, address administration unit is additionally operable to receive double stack users in interface unit
During the DHCPRequest message that terminal sends, carry out renewing process to IPv4 address, not
Send IPv4 address to double stack user terminals again and actively discharge information；
Wherein double stack user terminals carry in can not identifying DHCPForceRenew message
DHCPRequest message is sent in the case of the release mark of IPv4 address.
In one embodiment, address administration unit is additionally operable to access EPC in double stack user terminals
Afterwards, distribute IPv4 address for double stack user terminals.
According to a further aspect in the invention, provide a kind of system for dynamic release IPv4 address,
Including PDN Gateway and double stack user terminals, wherein：
PDN Gateway, is the PDN Gateway that any of the above-described enforcement item is related to；
Double stack user terminals, for actively discharging in the IPv4 address receiving PDN Gateway transmission
After information, by current IPv4 address deexcitation, and release to PDN Gateway transmission IPv4 address
Put request, so that PDN Gateway reclaims IPv4 address.
In one embodiment, double stack user terminals are specifically receiving PDN Gateway transmission
After DHCPForceRenew message, judge whether to be capable of identify that DHCPForceRenew message
In the IPv4 address release mark that carries, take if being capable of identify that in DHCPForceRenew message
The IPv4 address release mark of band, then by current IPv4 address deexcitation, and to PDN net
Close and send DHCPRelease message.
In one embodiment, double stack user terminals are additionally operable to identify
In the case of the IPv4 address release mark carrying in DHCPForceRenew message, to PDN
Gateway sends DHCPRequest message.
The present invention passes through by the IPv4 address utilization of the double stack user terminal of network side monitoring, if
The unused time of IPv4 address exceedes predetermined threshold, then send IPv4 ground to double stack user terminals
Location actively discharges information, so that double stack user terminal release IPv4 address, uses receiving double stacks
After the IPv4 address releasing request that family terminal sends, reclaim IPv4 address.The present invention passes through network
Side, to discharge the idle IPv4 address of double stack users, can effectively improve the utilization of IPv4 address resource
Efficiency.
Brief description
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will
The accompanying drawing of required use in embodiment or description of the prior art is briefly described it is clear that
Ground, drawings in the following description are only some embodiments of the present invention, the common skill for this area
For art personnel, without having to pay creative labor, can also be obtained according to these accompanying drawings
Obtain other accompanying drawings.
Fig. 1 is used for the schematic diagram of one embodiment of method of dynamic release IPv4 address for the present invention.
Fig. 2 is used for the signal of mono- embodiment of PGW of dynamic release IPv4 address for the present invention
Figure.
Fig. 3 is used for the schematic diagram of one embodiment of system of dynamic release IPv4 address for the present invention.
Fig. 4 is the schematic diagram of IPv4 address of the present invention one embodiment of dynamic release.
Fig. 5 is the schematic diagram of another embodiment of IPv4 address of the present invention dynamic release.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, to the technical scheme in the embodiment of the present invention
It is clearly and completely described it is clear that described embodiment is only present invention part reality
Apply example, rather than whole embodiments.Description at least one exemplary embodiment is real below
It is merely illustrative on border, never as any limit to the present invention and its application or use
System.Based on the embodiment in the present invention, those of ordinary skill in the art are not making creative labor
The every other embodiment being obtained under the premise of dynamic, broadly falls into the scope of protection of the invention.
Unless specifically stated otherwise, the part otherwise illustrating in these embodiments and the phase of step
Arrangement, numerical expression and numerical value are not limited the scope of the invention.
Simultaneously it should be appreciated that for the ease of description, the chi of the various pieces shown in accompanying drawing
Very little is not to draw according to actual proportionate relationship.
May not make in detail for technology, method and apparatus known to person of ordinary skill in the relevant
Thin discussion, but in the appropriate case, described technology, method and apparatus should be considered to authorize to be said
A part for bright book.
In all examples with discussion shown here, any occurrence should be construed as merely
Exemplary, not as restriction.Therefore, the other examples of exemplary embodiment can have
There are different values.
It should be noted that：Similar label and letter represent similar terms in following accompanying drawing, therefore,
Once being defined in a certain Xiang Yi accompanying drawing, then do not need it is carried out in subsequent accompanying drawing
Discussed further.
Fig. 1 is used for the schematic diagram of one embodiment of method of dynamic release IPv4 address for the present invention.
Preferably, the method and step of the present embodiment can be by PGW (PDN Gateway, PDN Gateway)
Execution.
Step 101, the IPv4 address utilization of the double stack user terminal of monitoring.
Wherein, after double stack user terminals access EPC, for double stack user terminals distribution IPv4 ground
Location.
Step 102, if the unused time of IPv4 address exceedes predetermined threshold, uses to double stacks
Family terminal sends IPv4 address and actively discharges information, so that double stack user terminal release IPv4 address.
Preferably, can by being extended to the DHCPForceRenew message of DHCP protocol,
The vendor-encapsulated-options domain of DHCPForceRenew message carries
IPv4 address release mark.By using DHCPForceRenew message as IPv4 address master
Dynamic release information is sent to the mode of double stack user terminals to realize the release of IPv4 address, can be effective
The compatibility of guarantee system.
Step 103, after receiving the IPv4 address releasing request that double stack user terminals send,
Reclaim IPv4 address.
For example, after receiving the DHCPRelease message that double stack user terminals send, by IPv4
Address mark is unallocated.Wherein, double stack user terminals are being capable of identify that DHCPForceRenew
DHCPRelease message is sent in the case of the IPv4 address release mark carrying in message.
If additionally, receiving the DHCPRequest message that double stack user terminals send, to IPv4
Address carries out renewing process, and no longer sends IPv4 address actively release letter to double stack user terminals
Breath.Wherein, double stack user terminals carry in can not identifying DHCPForceRenew message
DHCPRequest message is sent in the case of the release mark of IPv4 address.
The method for dynamic release IPv4 address being provided based on the above embodiment of the present invention, is led to
Cross network side to discharge the idle IPv4 address of double stack users, IPv4 address resource can be effectively improved
Utilization ratio.
Fig. 2 is used for the signal of mono- embodiment of PGW of dynamic release IPv4 address for the present invention
Figure.As shown in Fig. 2 PGW may include monitoring unit 201, interface unit 2022 and address pipe
Reason unit 203.Wherein：
Monitoring unit 201, for monitoring the IPv4 address utilization of double stack user terminals.
Interface unit 202, for the monitored results according to monitoring unit 201, if IPv4 address
Unused time exceed predetermined threshold, then to double stack user terminals send the active of IPv4 address release
Put information, so that double stack user terminal release IPv4 address.
Preferably, IPv4 address actively discharges information is DHCPForceRenew message, wherein
The vendor-encapsulated-options domain of DHCPForceRenew message carries
IPv4 address release mark.
Address administration unit 203, sends for receiving double stack user terminals in interface unit 202
IPv4 address releasing request after, reclaim IPv4 address.
Preferably, IPv4 address releasing request is DHCPRelease message.Address administration unit
203 specifically after interface unit receives the DHCPRelease message that double stack user terminals send,
IPv4 address mark is unallocated.Wherein double stack user terminals are being capable of identify that
Send in the case of the IPv4 address release mark carrying in DHCPForceRenew message
DHCPRelease message.
Preferably, address administration unit 203 is additionally operable to receive double stack users in interface unit 202
During the DHCPRequest message that terminal sends, carry out renewing process to IPv4 address, not
Send IPv4 address to double stack user terminals again and actively discharge information.Wherein double stack user terminals exist
In the case of the IPv4 address release mark carrying in DHCPForceRenew message can not be identified
Send DHCPRequest message.
The PGW for dynamic release IPv4 address being provided based on the above embodiment of the present invention, is led to
Cross network side to discharge the idle IPv4 address of double stack users, IPv4 address resource can be effectively improved
Utilization ratio.
Preferably, address administration unit 203 is additionally operable to after double stack user terminals access EPC,
Distribute IPv4 address for double stack user terminals.
Fig. 3 is used for the schematic diagram of one embodiment of system of dynamic release IPv4 address for the present invention.
As shown in figure 3, this system may include PGW 301 and double stack user terminal 302.Wherein：
PGW 301, is the PDN Gateway that in Fig. 2, any embodiment is related to.
Double stack user terminals 302, in the IPv4 address receiving PDN Gateway transmission actively
After release information, by current IPv4 address deexcitation, and send IPv4 ground to PDN Gateway
Location releasing request, so that PDN Gateway reclaims IPv4 address.
The system for dynamic release IPv4 address being provided based on the above embodiment of the present invention, is led to
Cross network side to discharge the idle IPv4 address of double stack users, IPv4 address resource can be effectively improved
Utilization ratio.
Preferably, double stack user terminals 302 are specifically receiving PGW 301 transmission
After DHCPForceRenew message, judge whether to be capable of identify that DHCPForceRenew message
In the IPv4 address release mark that carries, take if being capable of identify that in DHCPForceRenew message
The IPv4 address release mark of band, then by current IPv4 address deexcitation, and to PGW 301
Send DHCPRelease message.
Preferably, double stack user terminals 302 are additionally operable to identify DHCPForceRenew
In the case of the IPv4 address release mark carrying in message, send to PGW 301
DHCPRequest message.
Below by specific example, the present invention will be described.
Fig. 4 is the schematic diagram of IPv4 address of the present invention one embodiment of dynamic release.Shown in Fig. 4
In embodiment, the idle IPv4 address of double stack user terminals is successfully reclaimed.
Step 401, double stack user terminals access EPC, and obtain IPv4 address.
Wherein, double stack user terminals after accessing EPC, first broadcast by double stack user terminals
DHCPDiscover message, sends IP address lease request, and PGW replys DHCPOffer and disappears
Breath, carries the information such as IPv4 address, rental period, subnet mask.Double stack user terminals are replied
DHCPRequest message, this address is rented in request, and PGW replys DHCPAck message, takes
Band IPv4 address lease, completes DHCP configuration process.
Step 402, the IPv4 address utilization of the double stack user terminal of PGW monitoring.
Step 403, if the unused time of IPv4 address exceedes predetermined threshold, PGW is to double
Stack user terminal sends DHCPForceRenew message, wherein in DHCPForceRenew
IPv4 address release mark is carried in the vendor-encapsulated-options domain of message.
Step 404, after double stack user terminals receive DHCPForceRenew message, judges
Whether it is capable of identify that in vendor-encapsulated-options domain and carry IPv4 address release mark
Note.
Step 405, carries IPv4 if being capable of identify that in vendor-encapsulated-options domain
Address release mark, then double stack user terminals are by the deexcitation of IPv4 address.
Step 406, double stack user terminals send DHCPRelease message to PGW.
Step 407, after PGW receives DHCPRelease message, by IPv4 address mark
For unallocated, to complete the recovery to this IPv4 address.
Fig. 5 is the schematic diagram of IPv4 address of the present invention one embodiment of dynamic release.Shown in Fig. 5
In embodiment, the idle IPv4 address of double stack user terminals is not successfully reclaimed.
Step 501, double stack user terminals access EPC, and obtain IPv4 address.
Step 502, the IPv4 address utilization of the double stack user terminal of PGW monitoring.
Step 503, if the unused time of IPv4 address exceedes predetermined threshold, PGW is to double
Stack user terminal sends DHCPForceRenew message, wherein in DHCPForceRenew
IPv4 address release mark is carried in the vendor-encapsulated-options domain of message.
Step 504, after double stack user terminals receive DHCPForceRenew message, judges
Whether it is capable of identify that in vendor-encapsulated-options domain and carry IPv4 address release mark
Note.
Step 505, if carry IPv4 in None- identified vendor-encapsulated-options domain
Address release mark, then double stack user terminals Renew state will be entered according to agreement, to PGW
Send DHCPRequest message.
Step 506, after PGW receives DHCPRequest message, is that IPv4 address renews,
Send DHCPAck message to double stack user terminals, wherein carry the new rental period.
Step 507, PGW no longer sends to double stack user terminals and carries IPv4 address release mark
DHCPForceRenew message.
The idle IPv4 address of double stack users by implementing the present invention, can be discharged by network side,
The utilization ratio of IPv4 address resource can be effectively improved.Present invention realization simultaneously is convenient, compatible
Good, existing network need not be transformed.
One of ordinary skill in the art will appreciate that realizing all or part step of above-described embodiment
Suddenly can be completed it is also possible to the hardware being instructed correlation by program is completed by hardware, institute
The program stated can be stored in a kind of computer-readable recording medium, and storage mentioned above is situated between
Matter can be read only memory, disk or CD etc..
Description of the invention is given for the sake of example and description, and is not exhaustively
Or limit the invention to disclosed form.Many modifications and variations are for the common skill of this area
It is obvious for art personnel.Select and describe the principle that embodiment is in order to the present invention is more preferably described
And practical application, and make those of ordinary skill in the art it will be appreciated that the present invention is thus design is suitable
In the various embodiments with various modifications for the special-purpose.
Claims (13)
1. a kind of method for dynamic release IPv4 address is it is characterised in that include：
The IPv4 address utilization of the double stack user terminal of monitoring；
If the unused time of described IPv4 address exceedes predetermined threshold, to described couple of stack user
Terminal sends IPv4 address and actively discharges information, so that described pair of stack user terminal release is described
IPv4 address；
After receiving the IPv4 address releasing request that described pair of stack user terminal sends, reclaim institute
State IPv4 address.
2. method according to claim 1 it is characterised in that
It is DHCPForceRenew message that IPv4 address actively discharges information, wherein exists
IPv4 is carried in the vendor-encapsulated-options domain of DHCPForceRenew message
Address release mark.
3. method according to claim 2 it is characterised in that
IPv4 address releasing request is DHCPRelease message；
After receiving the IPv4 address releasing request that described pair of stack user terminal sends, reclaim institute
The step stating IPv4 address includes：
After receiving the DHCPRelease message that described pair of stack user terminal sends, will be described
IPv4 address mark is unallocated；
Wherein said pair of stack user terminal carries in being capable of identify that DHCPForceRenew message
IPv4 address release mark in the case of send DHCPRelease message.
4. method according to claim 3 it is characterised in that
If receiving the DHCPRequest message that described pair of stack user terminal sends, to described
IPv4 address carries out renewing process, and no longer sends IPv4 address master to described pair of stack user terminal
Dynamic release information；
Wherein said pair of stack user terminal carries in can not identifying DHCPForceRenew message
IPv4 address release mark in the case of send DHCPRequest message.
5. the method according to any one of claim 1-4 is it is characterised in that also include：
After described pair of stack user terminal accesses EPC, it is described couple of stack user terminal distribution IPv4
Address.
6. a kind of PDN Gateway for dynamic release IPv4 address is it is characterised in that include
Monitoring unit, interface unit and address administration unit, wherein：
Monitoring unit, for monitoring the IPv4 address utilization of double stack user terminals；
Interface unit, for the monitored results according to monitoring unit, if described IPv4 address is not
Use time exceedes predetermined threshold, then send the active of IPv4 address to described pair of stack user terminal and release
Put information, so that described pair of stack user terminal discharges described IPv4 address；
Address administration unit, for receiving what described pair of stack user terminal sent in interface unit
After the releasing request of IPv4 address, reclaim described IPv4 address.
7. PDN Gateway according to claim 6 it is characterised in that
It is DHCPForceRenew message that IPv4 address actively discharges information, wherein exists
IPv4 is carried in the vendor-encapsulated-options domain of DHCPForceRenew message
Address release mark.
8. PDN Gateway according to claim 7 it is characterised in that
IPv4 address releasing request is DHCPRelease message；
Address administration unit specifically receives what described pair of stack user terminal sent in interface unit
After DHCPRelease message, described IPv4 address mark is unallocated；
Wherein said pair of stack user terminal carries in being capable of identify that DHCPForceRenew message
IPv4 address release mark in the case of send DHCPRelease message.
9. PDN Gateway according to claim 8 it is characterised in that
Address administration unit is additionally operable to receive what described pair of stack user terminal sent in interface unit
During DHCPRequest message, described IPv4 address is carried out renewing process, and no longer to described
Double stack user terminals send IPv4 address and actively discharge information；
Wherein said pair of stack user terminal carries in can not identifying DHCPForceRenew message
IPv4 address release mark in the case of send DHCPRequest message.
10. the PDN Gateway according to any one of claim 6-9 it is characterised in that
Address administration unit is additionally operable to after described pair of stack user terminal accesses EPC, is described double
Stack user terminal distributes IPv4 address.
A kind of 11. systems for dynamic release IPv4 address are it is characterised in that include PDN
Gateway and double stack user terminal, wherein：
PDN Gateway, is the PDN Gateway that any one of claim 6-10 is related to；
Double stack user terminals, for actively discharging in the IPv4 address receiving PDN Gateway transmission
After information, by current IPv4 address deexcitation, and release to PDN Gateway transmission IPv4 address
Put request, so that PDN Gateway reclaims described IPv4 address.
12. systems according to claim 11 it is characterised in that
Double stack user terminals specifically disappear in the DHCPForceRenew receiving PDN Gateway transmission
After breath, judge whether to be capable of identify that the IPv4 address carrying in DHCPForceRenew message is released
Put labelling, if being capable of identify that the IPv4 address release mark carrying in DHCPForceRenew message
Note, then by current IPv4 address deexcitation, and send DHCPRelease to PDN Gateway
Message.
13. systems according to claim 12 it is characterised in that
Double stack user terminals are additionally operable to carry in can not identifying DHCPForceRenew message
In the case of the release mark of IPv4 address, send DHCPRequest message to PDN Gateway.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510530362.6A CN106487543A (en) | 2015-08-26 | 2015-08-26 | Methods, devices and systems for dynamic release IPv4 address |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510530362.6A CN106487543A (en) | 2015-08-26 | 2015-08-26 | Methods, devices and systems for dynamic release IPv4 address |
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| CN106487543A true CN106487543A (en) | 2017-03-08 |
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| CN201510530362.6A Pending CN106487543A (en) | 2015-08-26 | 2015-08-26 | Methods, devices and systems for dynamic release IPv4 address |
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