CN101729607A - IP address releasing method, system and device - Google Patents
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- CN101729607A CN101729607A CN200810225213A CN200810225213A CN101729607A CN 101729607 A CN101729607 A CN 101729607A CN 200810225213 A CN200810225213 A CN 200810225213A CN 200810225213 A CN200810225213 A CN 200810225213A CN 101729607 A CN101729607 A CN 101729607A
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Abstract
The invention discloses an IP address releasing method, an IP address releasing system and an IP address releasing device, which are used for realizing a process of releasing an IPV4 address. The IP address releasing method provided by the invention comprises that: a packet data network gateway PDNGW deletes the version-4 internet protocol IPV4 address which is allocated for user equipment UE, and modifies or deletes a traffic flow template TFT comprising the IPV4 address; when the PDNGW modifies the TFT, the PDNGW informs the UE of the modified TFT and informs the UE to delete the IPV4 address; and when the PDNGW deletes the TFT, the PDNGW informs the UE to delete the TFT and the IPV4 address.
Description
Technical field
The present invention relates to communication technical field, relate in particular to a kind of Internet Protocol (IP, Internet Protocol) address release method, system and device.
Background technology
In system framework evolution (SAE, System Architecture Evolution) system, support the Internet Protocol (IPV4) of edition 4 and the Internet Protocol (IPV6) of version 6.Under the SAE system, set up in the process of default bearer, user terminal (UE) is to mobile management entity (MME, Mobility Management Entity) (the PDN of Packet Data Network has been carried in adhering in request (Attach Request) message or Packet Data Network's connection request (the PDN connectivity request) message of sending, Packet Data Network) type (type) parameter is in order to show the type information of UE request IP address allocated.Several IP address assignment modes in the existing SAE system are as follows:
Mode one, set up process or UE request PDN at default bearer and connect and set up in the process, (PDN GW, Packet Data Network Gateway) is UE distributing IP V4 address by packet data network gateway.
Mode two, after default bearer is set up process and is finished, the DHCP (DHCPV4, Dynamic Host Configuration Protocol Version 4) by edition 4 is UE distributing IP V4 address and other configuration parameters.
Mode three, be UE distributing IP V6 address by the automatic configuration mechanism of stateless address.
Set up in the process at default bearer, the PDN type parameter that UE carries in the Attach request message that MME sends is divided into three kinds: the Internet Protocol (IPV4V6) of IPV4, IPV6, edition 4 and version 6.When PDN type parameter is IPV4V6, illustrate evolved packet system (EPS, Evolved Packet System) carrying can with an IPV6 address correlation, also can with an IPV4 address, an IPV6 address correlation.When PDN type parameter is IPV4, illustrate EPS carrying can only with an IPV4 address correlation.When PDN type parameter is IPV6, illustrate EPS carrying can only with an IPV6 address correlation.
UE is adhering to (Attach) process or is setting up in the PDN connection procedure, and PDN type parameter can be set based on the configuration of its IP stack:
If UE has IPV4 and IPV6 ability, so PDN type parameter is made as IPV4V6;
If UE has only the IPV4 ability, so PDN type parameter is made as IPV4;
If UE has only the IPV6 ability, so PDN type parameter is made as IPV6.
When UE does not know the IP version ability of self (for example portable terminal (MT) situation of separating with terminal equipment (te), MT does not know the IP version ability of TE), UE is made as IPV4V6 with PDN type parameter.
Except PDN type parameter, UE also can carry protocol configuration option (PCO) parameter in Attach request message or PDN connectivity request message, in order to indicate whether that setting up the back at default bearer obtains the IP address by DHCPV4 mechanism, this PCO parameter can pass through PDN GW.
After MME receives Attach request message or PDN connectivity request message, obtain subscription data and check the PDN type parameter of carrying in the message, PDN type is IPV4V6, and subscription data shows the APN (APN that the contracted user uses, Access Point Name) can use IPV4 address and IPV6 address, MME sends to gateway (Serving GW) by setting up default bearer request (Create default bearerrequest) message with this PDN type parameter so, and Serving GW sends to PDN GW with this information.
After PDN GW receives Create default bearer request message, obtaining the PDN type parameter in the message and the configuration information of operator is UE distributing IP address, if the PDN type that carries in the message is IPV4V6, and PDN GW can give UE distributing IP V4 address and IPV6 address according to the configuration decision of operator, PDN GW is UE distributing IP V4 address and IPV6 address so, simultaneously, if the PCO parameter of carrying in message indication UE uses the DHCPV4 agreement to obtain the IPV4 address, PDN GW is that the IPV4 address that UE distributes is complete zero address 0.0.0.0 so, PDN GW sends and sets up default bearer response (Create default bearer response) message to Serving GW then, and Serving GW gives MME with this forwards again.After MME receives this message, to adhere to acceptance (Attach accept) message or PDN connection response (PDN connectivity response) message sends to UE by evolved base station (eNodeB), in this message, carry complete zero IP address and the PDN type parameter of distributing to UE, after UE receives this message, the IPV4 address that obtains wherein is 0.0.0.0, hold consultation by initiating DHCPV4 protocol negotiation process and PDN GW then, in order to obtain concrete IPV4 address.
Yet, in existing SAE system standard, do not provide the technical scheme how UE and PDN GW discharge the IPV4 address.
Summary of the invention
The embodiment of the invention provides a kind of IP address release method, system and device, in order to realize the release of IPV4 address.
A kind of IP address release method that the embodiment of the invention provides comprises:
Packet data network gateway PDN GW deletion is the Internet Protocol IPV4 address of the edition 4 of user terminal UE distribution, and revises or delete the traffic flow template TFT that comprises described IPV4 address;
When described PDN GW had revised described TFT, described PDN GW was notified to described UE with described amended TFT, and notified described UE to delete described IPV4 address;
When described PDN GW had deleted described TFT, described PDN GW notified described UE to delete described TFT and described IPV4 address.
A kind of IP address release method that the embodiment of the invention provides comprises:
The notice of the Internet Protocol IPV4 address of the deletion edition 4 that user terminal UE receiving block data net gateway PDN GW sends, and therefrom obtain amended traffic flow template TFT, the indication of perhaps deleting TFT;
Described UE deletes described IPV4 address according to described notice; And,
Utilize the Internet Protocol IPV6 address that comprises version 6 of described amended TFT renewal self storage and the TFT of described IPV4 address, perhaps, according to the indication of described deletion TFT, the IP address that deletion comprises only is the TFT of described IPV4 address.
A kind of PDN GW that the embodiment of the invention provides comprises:
Deletion IPV4 address location, the Internet Protocol IPV4 address that is used to delete the edition 4 that distributes into user terminal UE;
The TFT processing unit is used to revise or delete the traffic flow template TFT that comprises described IPV4 address;
Revise load bearing unit, be used for when described TFT processing unit has been revised described TFT, described amended TFT being notified to described UE, and notify described UE to delete described IPV4 address;
The deleting bearing unit is used for when described TFT processing unit has been deleted described TFT, notifies described UE to delete described TFT and described IPV4 address.
A kind of UE that the embodiment of the invention provides comprises:
The reception notification unit is used for the notice of the Internet Protocol IPV4 address of the deletion edition 4 that receiving block data net gateway PDN GW sends, and therefrom obtains amended traffic flow template TFT, the indication of perhaps deleting TFT;
Deletion IPV4 address location is used for according to described notice, deletes described IPV4 address;
The TFT updating block is used for according to described notice, utilizes the Internet Protocol IPV6 address that comprises version 6 of described amended TFT renewal self storage and the TFT of described IPV4 address;
The TFT delete cells is used for the indication according to described deletion TFT, and the IP address that deletion comprises only is the TFT of described IPV4 address.
A kind of communication system that the embodiment of the invention provides comprises:
Packet data network gateway PDN GW, the Internet Protocol IPV4 address that is used to delete the edition 4 that distributes into user terminal UE, and revise or delete the traffic flow template TFT that comprises described IPV4 address; When having revised described TFT, described amended TFT is notified to described UE, and notifies described UE to delete described IPV4 address; When having deleted described TFT, notify described UE to delete described TFT and described IPV4 address;
User terminal UE is used to receive the notice of the deletion IPV4 address that described PDN GW sends, and therefrom obtains amended TFT, the indication of perhaps deleting TFT; According to described notice, delete described IPV4 address; And, utilize the Internet Protocol IPV6 address that comprises version 6 of described amended TFT renewal self storage and the TFT of described IPV4 address, perhaps, according to the indication of described deletion TFT, the IP address that deletion comprises only is the TFT of described IPV4 address.
The embodiment of the invention, packet data network gateway PDN GW deletion is the Internet Protocol IPV4 address of the edition 4 of user terminal UE distribution, and revises or delete the traffic flow template TFT that comprises described IPV4 address; When described PDN GW had revised described TFT, described PDN GW was notified to described UE with described amended TFT, and notified described UE to delete described IPV4 address; When described PDN GW had deleted described TFT, described PDN GW notified described UE to delete described TFT and described IPV4 address, thereby has realized the dispose procedure of IPV4 address.
Description of drawings
A kind of PDN GW that Fig. 1 provides for the embodiment of the invention realizes discharging the method flow schematic diagram of IP address;
A kind of UE that Fig. 2 provides for the embodiment of the invention realizes discharging the method flow schematic diagram of IP address;
A kind of UE that Fig. 3 provides for the embodiment of the invention initiates to discharge the concrete grammar schematic flow sheet of IP address;
The schematic diagram of the bearing modification process of not carrying out the bearer quality of service renewal that the PDN GW that Fig. 4 provides for the embodiment of the invention initiates;
The schematic diagram of the load bearing deactivation process that the PDN GW that Fig. 5 provides for the embodiment of the invention initiates;
The structural representation of a kind of PDN GW that Fig. 6 provides for the embodiment of the invention;
The structural representation of a kind of UE that Fig. 7 provides for the embodiment of the invention.
Embodiment
The embodiment of the invention provides a kind of IP address release method, system and device, in order to realize the dispose procedure of IPV4 address.
Below in conjunction with accompanying drawing the technical scheme that the embodiment of the invention provides is described.
Referring to Fig. 1, at PDN GW end, a kind of IP address release method that the embodiment of the invention provides comprises:
The IPV4 address that S101, PDN GW deletion distributes for UE, and revise or delete the TFT that comprises this IPV4 address.
S102, when PDN GW has revised the TFT that comprises this IPV4 address, PDN GW is notified to UE with amended TFT, and the notice UE delete this IPV4 address.
S103, when PDN GW has deleted the TFT that comprises this IPV4 address, PDN GW notice UE deletes this TFT and this IPV4 address.
Correspondingly, referring to Fig. 2, at the UE end, a kind of IP address release method that the embodiment of the invention provides comprises:
S201, UE receive the notice of the deletion IPV4 address of PDN GW transmission, and therefrom obtain amended TFT, and perhaps deleting the IP address that comprises only is the indication of the TFT of this IPV4 address.
S202, UE delete this IPV4 address according to described notice.
S203, UE utilize the amended TFT that obtains from described notice to upgrade the TFT that comprises IPV6 address and this IPV4 address that self stores; Perhaps, according to the indication of the deletion TFT that obtains from described notice, the IP address that deletion comprises only is the TFT of this IPV4 address.
The dispose procedure of above-mentioned IP V4 address can initiatively be initiated by PDN GW, also can initiatively be initiated by UE.When initiatively being initiated by UE, UE sends DHCP and discharges (DHCP Release) message to PDNGW, when PDN GW receives this DHCP Release message, replys DHCP to UE and confirms (DHCPACK) message, and carry out above-mentioned steps S101.
Preferably, the type parameter PDN type that connects as the pairing PDN in IPV4 address is IPV4V6, and, TFT in the EPS bearer context that this PDN connects comprises this IPV4 address, when also comprising the IPV6 address, PDN GW revises this TFT, is about to packets of information filter (Packet filter) deletion relevant with this IPV4 address among this TFT, but keeps the packetfilter relevant with the IPV6 address wherein.
Preferably, the type parameter PDN type that connects as the pairing PDN in IPV4 address is IPV4V6, and, when the IP address that TFT comprised in the EPS bearer context that this PDN connects only is this IPV4 address; Perhaps, when the type parameter PDN type of the pairing PDN connection in IPV4 address was IPV4, PDN GW deleted this TFT.
When PDN GW has revised the TFT that comprises IPV6 address and this IPV4 address, PDN GW is by initiating not carry out the bearing modification process (Bearer modification procedurewithout bearer QOS update) that bearer quality of service upgrades, amended TFT is notified to UE, and notice UE deletes this IPV4 address.
When PDN GW had deleted the IP address that comprises only for the TFT of IPV4 address, described PDN GW was by initiating the load bearing deactivation process, and notice UE deletes this IPV4 address and this TFT.
Provide the concrete grammar flow process of initiatively initiating IPV4 address dispose procedure as UE below.
Referring to Fig. 3, a kind of IP address release method that the embodiment of the invention provides comprises step:
S301, UE send DHCP Release message to PDN GW.
After S302, PDN GW receive DHCP Release message, send DHCP to UE and confirm (DHCPACK) message.
The IPV4 address that S303, PDN GW deletion UE request discharges.
S304, PDN GW obtain the type parameter PDN type that the pairing PDN in this IPV4 address connects by checking the context relevant with this IPV4 address among the EPS Bearer context.
S305, PDN GW judge whether this PDN type is IPV4V6, if then carry out step S309; Otherwise, execution in step S306.
S306, PDN GW judge whether this PDN type is IPV4, if then carry out step S307; Otherwise, end operation.
The IP address that S307, PDN GW deletion comprises only is the TFT of this IPV4 address.
S308, PDN GW initiate load bearing deactivation (bearer deactivation) process and delete the EPS bearer of this IPV4 address correspondence, that is to say that IPV4 address that notice UE need discharge and the IP address that comprises that needs to delete only are the TFT of this IPV4 address; UE deletes this IPV4 address of preserving in the EPS bearer context of self after receiving the IPV4 address that needs to discharge, and the IP address that deletion comprises only is the TFT of this IPV4 address.
S309, PDN GW judge whether the TFT that comprises this IPV4 address also comprises the IPV6 address, if then carry out step S310; Otherwise, carry out step S307.
S310, PDN GW revise the TFT of the EPS bearer of this IPV4 address correspondence.
S311, PDN GW initiate Bearer modification procedure without bearer QOSupdate, in order to amended UL TFT of notice UE and the IPV4 address that needs to discharge; After UE receives the IPV4 address that needs to discharge, this IPV4 address deletion of preserving in the EPS bearer context with self, and, utilize amended UL TFT to upgrade the UL TFT that comprises IPV6 address and this IPV4 address in the EPS bearer context.
The Bearer modification procedure without bearer QOSupdate that initiates of PDN GW wherein as shown in Figure 4, specifically comprises:
Step 1, PDN GW send more new bearer request (Update bearer request) and give Serving GW, comprising EPS bearing identification (EPS Bearer Identity), updating type (Update type), PDN address (PDN address) and amended UL TFT, Update type wherein is made as deletion PDNaddress, promptly is used to indicate UE that the IPV4 address is deleted.
Step 2, Serving GW transmit Update bearer request message and give MME.
Step 3, MME become session management configuration parameter (Session management configuration IE) with EPS bearer Identity, PDN address, Update type and UL TFT parametric configuration, and MME sends descending Non-Access Stratum transmission (Downlink NAS Transport) message and gives eNodeB then.
After step 4, eNodeB receive Downlink NAS Transport message, send and directly transmit (Direct Transfer) message to UE, comprising EPS bearer Identity, PDN address, Updatetype and UL TFT parameter.
Step 5, UE delete PDN address (IPV4 address) according to Update Type from the EPS bearer context, and utilize amended UL TFT to upgrade corresponding ULTFT among the EPS bearer context (comprised the IPV6 address, and needed the IPV4 address that discharges).Send Direct Transfer message then to eNodeB, comprise Session management configuration IE in this message, comprise EPS bearer Identity among this IE, PDN address is deleted in order to notice PDN GW, and upgraded corresponding UL TFT.
Step 7, MME receive Uplink NAS Transport) after the message, therefrom obtain EPS bearerIdentity, and send renewal carrying response (Update bearer response) message to Serving GW, comprising EPS Bearer Identity.
Step 8, Serving GW transmit Update Bearer Response message and give PDN GW.
PDN GW therefrom obtains the EPS Bearer Identity from UE after receiving the Update Bearer Response message of Serving GW transmission, determines that this UE will need the IPV4 address deletion that discharges, and has upgraded corresponding TFT.
The bearer deactivation process that above-mentioned PDN GW initiates as shown in Figure 5, comprising:
Step 1, PDN GW send deleting bearing request (Delete Bearer Request) message and give ServingGW, comprising protocol processes sign (PTI, Protocol Transaction Id), EPS Bearer Identity, reason (Cause) and PDN address parameter, the value of Cause parameter wherein is deletion IPV4 address, promptly is used to the IPV4 address of indicating UE deletion needs to discharge.
Step 2a, Serving GW transmit Delete Bearer Request message and give MME.
Activate if step 2b idle state signaling reduces function (ISR, Idle state Signaling Reduction), Serving GW transmits Delete Bearer Request message and gives Serving GPRS Support Node (SGSN) so.Wherein, the ISR activation is in order to reduce the Signalling exchange under the UE idle condition.
Step 3, MME make up Session Management Configuration IE, comprising PTI, EPS Bearer Identity, PDN address and Cause after receiving Serving GW forwarding Delete Bearer Request message.MME sends load bearing deactivation request (Deactivate Bearer Request) and gives eNodeB, comprising EPS Bearer Identity and Session Management ConfigurationIE.
After step 4, eNodeB receive described Deactivate Bearer Request, send radio bearer and discharge request (Radio Bearer Release Request) to UE, comprising EPS Bearer Identity and Session Management Configuration IE.
Step 5, UE be according to receiving described Radio Bearer Release Request, deletes the TFT and the context of corresponding carrying in self EPS bearer context, deletes the IPV4 address simultaneously.UE sends radio bearer release response (Radio Bearer Release Response) message and gives eNodeB then, comprising session management response (Session Management Response) information and EPS Bearer Identity.
After step 6, eNodeB receive Radio Bearer Release Response message, send load bearing deactivation response (Deactivate Bearer Response) message and give MME, comprising EPS BearerIdentity and Session Management Response.
After step 7a, MME receive described Deactivate Bearer Response message, the pairing bearer context of deletion EPSBearer Identity, and send deleting bearing response (Delete BearerResponse) message and give Serving GW, comprising EPS Bearer Identity.
Step 7b, SGSN send deleting bearing response (Delete Bearer Response) message to Serving GW.
Need to prove that step 7b just can carry out under the prerequisite of having carried out step 2b, the execution of this step and MME are irrelevant.
After step 8, Serving GW receive MME or further receive the DeleteBearer Response of SGSN transmission, the pairing bearer context of deletion EPS Bearer Identity, and send Delete Bearer Response message to PDN GW, comprising EPS Bearer Identity.
After PDN GW receives the Delete Bearer Response message of Serving GW transmission, the pairing bearer context of deletion EPS Bearer Identity.
Introduce the device that the embodiment of the invention provides below.
Referring to Fig. 6, a kind of PDN GW that the embodiment of the invention provides comprises:
Receive request unit 11, be used to receive the DHCP release message that UE sends.
Deletion IPV4 address location 13 is used to delete the IPV4 address of distributing into this UE.
Revise load bearing unit 16, be used for when described TFT processing unit 14 has been revised the TFT that comprises this IPV4 address, amended TFT being notified to this UE, and notify this UE to delete this IPV4 address.
Deleting bearing unit 15 is used for having deleted when comprising this IPV4 address TFT when described TFT processing unit 14, notifies this UE to delete this TFT and this IPV4 address.
Described TFT processing unit 14 comprises:
Revise TFT unit 142, be used for when this PDN type be IPV4V6, and, comprise when also comprising the IPV6 address among the TFT of this IPV4 address, revise this TFT.
Described modification load bearing unit 16 when TFT has been revised in described modification TFT unit 142, by initiating not carry out the bearing modification process that bearer quality of service upgrades, is notified to UE with amended TFT, and notice UE deletion IPV4 address.
Described deleting bearing unit 15 is when TFT has been deleted in described deletion TFT unit 141, by initiating the load bearing deactivation process, notice UE deletion IPV4 address and TFT.
Referring to Fig. 7, a kind of UE that the embodiment of the invention provides comprises:
Send request unit 21, be used for sending the DHCP release message to PDN GW, request discharges described IPV4 address.
Confirmation of receipt unit 22 is used to receive the DHCP acknowledge message that PDN GW sends.
Deletion IPV4 address location 24 is used for according to this notice, this IPV4 address of deletion from the EPS bearer context of self.
TFT delete cells 26 is used for the indication according to the deletion TFT of PDN GW transmission, and the IP address that deletion comprises from the EPS bearer context of self only is the TFT of this IPV4 address.
In sum, the embodiment of the invention, packet data network gateway PDN GW deletion is the Internet Protocol IPV4 address of the edition 4 of user terminal UE distribution, and revises or delete the traffic flow template TFT that comprises described IPV4 address; When described PDN GW had revised described TFT, described PDN GW was notified to described UE with described amended TFT, and notified described UE to delete described IPV4 address; When described PDN GW had deleted described TFT, described PDN GW notified described UE to delete described TFT and described IPV4 address, thereby has realized the dispose procedure of IPV4 address.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (19)
1. an IP address release method is characterized in that, this method comprises:
Packet data network gateway PDN GW deletion is the Internet Protocol IPV4 address of the edition 4 of user terminal UE distribution, and revises or delete the traffic flow template TFT that comprises described IPV4 address;
When described PDN GW had revised described TFT, described PDN GW was notified to described UE with described amended TFT, and notified described UE to delete described IPV4 address;
When described PDN GW had deleted described TFT, described PDN GW notified described UE to delete described TFT and described IPV4 address.
2. method according to claim 1, it is characterized in that, the type parameter PDN type that connects as the pairing PDN in described IPV4 address is the Internet Protocol IPV4V6 of edition 4 and version 6, and, when the IP address that comprises among the described TFT comprised the Internet Protocol IPV6 address of version 6 and described IPV4 address, described PDN GW revised the TFT that comprises described IPV4 address.
3. method according to claim 1, it is characterized in that, the type parameter PDN type that connects as the pairing PDN in described IPV4 address is the Internet Protocol IPV4V6 of edition 4 and version 6, and, when the IP address that comprises among the described TFT only is described IPV4 address; Perhaps, when described PDN type was IPV4, described PDN GW deleted described TFT.
4. method according to claim 1, it is characterized in that, when described PDN GW has revised described TFT, described PDN GW is by initiating not carry out the bearing modification process that bearer quality of service upgrades, described amended TFT is notified to described UE, and notifies described UE to delete described IPV4 address.
5. method according to claim 1 is characterized in that, when described PDN GW had deleted described TFT, described PDN GW notified described UE to delete described IPV4 address and described TFT by initiating the load bearing deactivation process.
6. method according to claim 1 is characterized in that, when described PDN GW received the dynamic host configuration protocol DHCP release message of described UE transmission, described PDN GW deleted described IPV4 address.
7. method according to claim 6 is characterized in that, after described PDN GW received the DHCP release message of described UE transmission, this method also comprised:
Described PDN GW replys the DHCP acknowledge message to described UE.
8. an IP address release method is characterized in that, this method comprises:
The notice of the Internet Protocol IPV4 address of the deletion edition 4 that user terminal UE receiving block data net gateway PDN GW sends, and therefrom obtain amended traffic flow template TFT, the indication of perhaps deleting TFT;
Described UE deletes described IPV4 address according to described notice; And,
Utilize the Internet Protocol IPV6 address that comprises version 6 of described amended TFT renewal self storage and the TFT of described IPV4 address, perhaps, according to the indication of described deletion TFT, the IP address that deletion comprises only is the TFT of described IPV4 address.
9. method according to claim 8 is characterized in that, described UE receives before the described notice, and this method also comprises:
Described UE sends the dynamic host configuration protocol DHCP release message to described PDN GW, and request discharges described IPV4 address.
10. method according to claim 9 is characterized in that, described UE has sent after the described DHCP release message, receives before the described notice, and this method also comprises:
Described UE receives the DHCP acknowledge message that described PDN GW sends.
11. a packet data network gateway is characterized in that, this packet data network gateway comprises:
Deletion IPV4 address location, the Internet Protocol IPV4 address that is used to delete the edition 4 that distributes into user terminal UE;
The TFT processing unit is used to revise or delete the traffic flow template TFT that comprises described IPV4 address;
Revise load bearing unit, be used for when described TFT processing unit has been revised described TFT, described amended TFT being notified to described UE, and notify described UE to delete described IPV4 address;
The deleting bearing unit is used for when described TFT processing unit has been deleted described TFT, notifies described UE to delete described TFT and described IPV4 address.
12. packet data network gateway according to claim 11 is characterized in that, described TFT processing unit comprises:
Deletion TFT unit, the type parameter PDNtype that is used for connecting as the pairing PDN in described IPV4 address is the Internet Protocol IPV4V6 of edition 4 and version 6, and, when the IP address that comprises among the described TFT only is described IPV4 address; Perhaps, when described PDN type is IPV4, delete described TFT;
Revise the TFT unit, be used for when described PDN type be IPV4V6, and, when the IP address that comprises among the described TFT comprises the Internet Protocol IPV6 address of version 6 and described IPV4 address, revise described TFT.
13. packet data network gateway according to claim 11, it is characterized in that, described modification load bearing unit, when described TFT processing unit has been revised described TFT, by initiating not carry out the bearing modification process that bearer quality of service upgrades, described amended TFT is notified to described UE, and notifies described UE to delete described IPV4 address.
14. packet data network gateway according to claim 11, it is characterized in that described deleting bearing unit is when described TFT processing unit has been deleted described TFT, by initiating the load bearing deactivation process, notify described UE to delete described IPV4 address and described TFT.
15. packet data network gateway according to claim 11 is characterized in that, this packet data network gateway also comprises:
Receive request unit, be used to receive the dynamic host configuration protocol DHCP release message that UE sends;
Reply confirmation unit, be used for replying the DHCP acknowledge message to described UE.
16. a user terminal is characterized in that, this user terminal comprises:
The reception notification unit is used for the notice of the Internet Protocol IPV4 address of the deletion edition 4 that receiving block data net gateway PDN GW sends, and therefrom obtains amended traffic flow template TFT, the indication of perhaps deleting TFT;
Deletion IPV4 address location is used for according to described notice, deletes described IPV4 address;
The TFT updating block is used for according to described notice, utilizes the Internet Protocol IPV6 address that comprises version 6 of described amended TFT renewal self storage and the TFT of described IPV4 address;
The TFT delete cells is used for the indication according to described deletion TFT, and the IP address that deletion comprises only is the TFT of described IPV4 address.
17., it is characterized in that this user terminal also comprises according to the described user terminal of claim 16:
Send request unit, be used for sending the dynamic host configuration protocol DHCP release message to described PDN GW, request discharges described IPV4 address.
18., it is characterized in that this user terminal also comprises according to the described user terminal of claim 17:
The confirmation of receipt unit is used to receive the DHCP acknowledge message that described PDN GW sends.
19. a communication system is characterized in that, this system comprises:
Packet data network gateway PDN GW, the Internet Protocol IPV4 address that is used to delete the edition 4 that distributes into user terminal UE, and revise or delete the traffic flow template TFT that comprises described IPV4 address; When having revised described TFT, described amended TFT is notified to described UE, and notifies described UE to delete described IPV4 address; When having deleted described TFT, notify described UE to delete described TFT and described IPV4 address;
User terminal UE is used to receive the notice of the deletion IPV4 address that described PDN GW sends, and therefrom obtains amended TFT, the indication of perhaps deleting TFT; According to described notice, delete described IPV4 address; And, utilize the Internet Protocol IPV6 address that comprises version 6 of described amended TFT renewal self storage and the TFT of described IPV4 address, perhaps, according to the indication of described deletion TFT, the IP address that deletion comprises only is the TFT of described IPV4 address.
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| WO2014040464A1 (en) * | 2012-09-17 | 2014-03-20 | 中兴通讯股份有限公司 | Resource release method, message processing method, twag and terminal |
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| CN101001262B (en) * | 2006-01-11 | 2011-11-09 | 上海原动力通信科技有限公司 | IP address release method |
| CN101018395B (en) * | 2006-02-09 | 2011-01-26 | 上海原动力通信科技有限公司 | Method for recovering the IP address and network resource occupied by the user device |
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2008
- 2008-10-27 CN CN2008102252139A patent/CN101729607B/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014040464A1 (en) * | 2012-09-17 | 2014-03-20 | 中兴通讯股份有限公司 | Resource release method, message processing method, twag and terminal |
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