CN102932467B - The transmission method of packet and device - Google Patents
The transmission method of packet and device Download PDFInfo
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- CN102932467B CN102932467B CN201210444003.5A CN201210444003A CN102932467B CN 102932467 B CN102932467 B CN 102932467B CN 201210444003 A CN201210444003 A CN 201210444003A CN 102932467 B CN102932467 B CN 102932467B
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Abstract
The present invention relates to a kind of transmission method and device of packet.The transmission method of packet comprises: the first mobile terminal arranges initial data packets, first home address of the first source address corresponding to the first mobile terminal, second home address of first object address corresponding to the second mobile terminal; Carry out tunnel encapsulation to initial data packets obtain the first encapsulated data packet and send, first packaged source address is the first network address of the first mobile terminal, first encapsulation destination address is the second home address, so that the second home address is mapped as the second network address of the second mobile terminal by gateway.The transmission method of the packet of the present embodiment and device, first mobile terminal and the second mobile terminal can utilize home address namely can send packet to opposite end mobile terminal, gateway is utilized to carry out IP mapping, do not need application server or miscellaneous equipment to communicate first switching network address between mobile terminals, processing method is simple again.
Description
Technical field
The present invention relates to moving communicating field, particularly relate to a kind of transmission method and device of packet.
Background technology
Existing mobile communication packet field network distributes to user terminal (UserEquipment, UE) Internet protocol (InternetProtocol, IP) address major part is all dynamic assignment, if when reopening after UE shutdown or reconnect after broken string, network allocation changes possibly to the IP address of UE.This situation brings very large inconvenience to packet domain terminal mutual visit business, because when the IP address distributing to UE changes at every turn, just need the interchange re-starting IP address information, carries out data processing according to new IP address.
A kind of prior art is that the data services such as mobile phone QQ, MSN, Skype are evaded IP address information by application server transfer IP address information and changed the inconvenient problem brought.But this mode is that when IP address changes, data processing is still very inconvenient by disposing application server, carrying out the transfer of IP address information in application layer.
Summary of the invention
The embodiment of the present invention is for the defect of prior art, a kind of transmission method and device of packet are provided, utilize the marked network address that newly increases to carry out unique identification mobile terminal, avoid network address when changing, need to learn that the network address of opposite end just can send the problem of packet.
First aspect, embodiments provides a kind of transmission method of packet, and described method comprises:
First mobile terminal arranges the initial data packets treating to send to the second mobile terminal, first home address of the first source address in described initial data packets corresponding to described first mobile terminal, second home address of first object address corresponding to described second mobile terminal;
Carry out tunnel encapsulation to described initial data packets obtain the first encapsulated data packet and send, the first packaged source address in described first encapsulated data packet is the first network address of described first mobile terminal, first encapsulation destination address is described second home address, so that described second home address is mapped as the second network address of described second mobile terminal by gateway.
Second aspect, the embodiment of the present invention additionally provides a kind of transmission method of packet, and described method comprises:
Gateway receives the first encapsulated data packet that the first mobile terminal sends, the first packaged source address in described first encapsulated data packet is the first network address of described first mobile terminal, the first encapsulation second home address of destination address corresponding to the second mobile terminal;
Described second home address is mapped as the second network address of described second mobile terminal by described gateway;
Described first encapsulated data packet is sent to described second mobile terminal according to described second network address by described gateway, so that described first encapsulated data packet decapsulation is obtained described first network address by described second mobile terminal.
The third aspect, the embodiment of the present invention additionally provides a kind of transmission method of packet, and described method comprises:
First mobile terminal arranges the initial data packets treating to send to the second mobile terminal, and described initial data packets comprises the first home address of described first mobile terminal; And the first network address that the first source address in described initial data packets is described first mobile terminal, second home address of first object address corresponding to described second mobile terminal;
Initial data packets is sent, so that the second home address of described initial data packets is mapped as the second network address of described second mobile terminal by gateway to the second mobile terminal.
Fourth aspect, the embodiment of the present invention additionally provides a kind of transmission method of packet, and described method comprises:
Gateway receives the initial data packets that the first mobile terminal sends, and described initial data packets comprises the first home address of described first mobile terminal; And the first source address in described initial data packets is the first network address of described first mobile terminal, second home address of first object address corresponding to described second mobile terminal;
Described second home address is mapped as the second network address of described second mobile terminal by described gateway;
Described initial data packets is sent to described second mobile terminal according to described second network address by described gateway, so that described second mobile terminal obtains described first network address from described initial data packets.
5th aspect, the embodiment of the present invention additionally provides a kind of transmitting device of packet, and described device comprises:
Setting unit, the initial data packets treating to send to the second mobile terminal is set for the first mobile terminal, first home address of the first source address in described initial data packets corresponding to described first mobile terminal, second home address of first object address corresponding to described second mobile terminal;
Encapsulation unit, obtain the first encapsulated data packet for carrying out tunnel encapsulation to described initial data packets and send, the first packaged source address in described first encapsulated data packet is the first network address of described first mobile terminal, first encapsulation destination address is described second home address, so that described second home address is mapped as the second network address of described second mobile terminal by gateway.
6th aspect, the embodiment of the present invention additionally provides a kind of transmitting device of packet, and described device comprises:
Receiving element, the first encapsulated data packet of the first mobile terminal transmission is received for gateway, the first packaged source address in described first encapsulated data packet is the first network address of described first mobile terminal, the first encapsulation second home address of destination address corresponding to the second mobile terminal;
Map unit, is mapped as the second network address of described second mobile terminal by described second home address for described gateway;
Transmitting element, is sent to described second mobile terminal according to described second network address by described first encapsulated data packet for described gateway, so that described first encapsulated data packet decapsulation is obtained described first network address by described second mobile terminal.
7th aspect, the embodiment of the present invention additionally provides a kind of transmitting device of packet, and described device comprises:
Setting unit, arrange the initial data packets treating to send to the second mobile terminal for the first mobile terminal, described initial data packets comprises the first home address of described first mobile terminal; And the first network address that the first source address in described initial data packets is described first mobile terminal, second home address of first object address corresponding to described second mobile terminal;
Transmitting element, for sending initial data packets, so that described second home address in described initial data packets is mapped as the second network address of described second mobile terminal by gateway to described second mobile terminal.
Eighth aspect, the embodiment of the present invention additionally provides a kind of transmitting device of packet, and described device comprises:
Receiving element, receive the initial data packets of the first mobile terminal transmission for gateway, described initial data packets comprises the first home address of described first mobile terminal; And the first source address in described initial data packets is the first network address of described first mobile terminal, second home address of first object address corresponding to described second mobile terminal;
Map unit, is mapped as the second network address of described second mobile terminal by described second home address for described gateway;
Transmitting element, is sent to described second mobile terminal according to described second network address by described initial data packets for described gateway, so that described second mobile terminal obtains described first network address from described initial data packets.
The transmission method of the packet of the present embodiment and device, first mobile terminal and the second mobile terminal can utilize home address namely can send packet to opposite end mobile terminal, gateway is utilized to carry out IP mapping, the change of the network address sends packet to the first mobile terminal and the second mobile terminal not to be affected, do not need application server or miscellaneous equipment to communicate first switching network address between mobile terminals, processing method is simple again.
Accompanying drawing explanation
Fig. 1 is the flow chart of the transmission method of embodiment of the present invention packet;
Fig. 2 is another flow chart of the transmission method of embodiment of the present invention packet;
Fig. 3 is the flow chart of the transmission method of another embodiment of the present invention packet;
Fig. 4 is another flow chart of the transmission method of another embodiment of the present invention packet;
Fig. 5 is the schematic diagram of the transmitting device of embodiment of the present invention packet;
Fig. 6 is another schematic diagram of the transmitting device of embodiment of the present invention packet;
Fig. 7 is the schematic diagram of the transmitting device of another embodiment of the present invention packet;
Fig. 8 is another schematic diagram of the transmitting device of another embodiment of the present invention packet.
Embodiment
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
The embodiment of the present invention directly realizes packet domain terminal mutual visit at mobile communication packet field network to when UE dynamic IP address allocation, do not need application server or other between UE, first exchange the method that IP address communicates again.
The embodiment of the present invention can be, but not limited to for various mobile communication packet field network: Long Term Evolution (LongTermEvolution, LTE), high-speed downlink packet access (HighSpeedDownlinkPacketAccess, HSPA), enhanced high-speed downlink packets access (HSPAEvolution, HSPA+), universal mobile telecommunications system (UniversalMobileTelecommunicationsSystem, UMTS), claim code division multiple access access (CodeDivisionMultipleAccess, CDMA), TD SDMA (TimeDivision-SynchronousCodeDivisionMultipleAccess, TD-SCDMA), general packet radio service (GeneralPacketRadioService, GPRS), enhanced data rates for gsm evolution (EnhancedDataRateforGSMEvolution, EDGE), worldwide interoperability for microwave access (WorldwideInteroperabilityforMicrowaveAccess, WiMAX).
The embodiment of the present invention is in the existing network address, and on IP address assignment mechanism, a newly-increased home address, namely identifies IP(IdentityIP) address.
This mark IP fixes each terminal and unique, and form can be IPv6 or IPv4, and completely independent with the IP address format of network allocation, identify in addition IP not participation network communication IP address assignment, do not take the IP address real resource of network service.
Fig. 1 is the flow chart of the transmission method of embodiment of the present invention packet, and as shown in the figure, the present embodiment is the concrete processing procedure of UE side, comprises the steps:
Step 101, first mobile terminal UE 1 arranges the initial data packets treating to send to the second mobile terminal UE 2, the first source address (a Src address) the first home address I-IP-1 corresponding to the first mobile terminal in initial data packets, first object address (a Dest address) the second home address I-IP-2 corresponding to UE2;
When UE1 arranges initial data packets to UE2, the live network address of UE2 is not also known in UE1 side, i.e. IP-2, and only know the home address of UE2, i.e. I-IP-2, and the home address of UE2 is unique corresponding and constant with UE, UE1 so just can be facilitated to be that UE2 sends packet, such as IP packet.
And UE1 knows network address IP-1 and the home address I-IP-1 of local terminal, so the Src address in the initial data packets arranged to UE2 extends this as I-IP-1, I-IP-2 is extended this as in one Dest address, concrete, can be filled in by the application program of UE1.
Step 102, carry out tunnel encapsulation to initial data packets obtain the first encapsulated data packet and send, the first network address ip-1 that the first packaged source address (the first encapsulation Src address) in first encapsulated data packet is UE1, first encapsulation destination address (the first encapsulation Dest address) is the second home address I-IP-2, so that the second home address is mapped as the second network address ip-2 of UE2 by gateway.
UE1 has IP tunnel function, IP initial data packets is encapsulated, first encapsulation Src address of the first encapsulated data packet after encapsulation is IP-1, first encapsulation Dest address is I-IP-2, and gateway safeguards the network address IP-1 and the home address I-IP-1 that there are UE1, also safeguard the network address IP-2 and the home address I-IP-2 that there are UE2 simultaneously; When receiving the first encapsulated data packet that UE1 sends, obtain the first encapsulation Dest address I-IP-2 of this encapsulated data packet, gateway utilizes IP mapping function that the first encapsulation Dest address I-IP-2 is mapped as the network address IP-2 of UE2.
Again as shown in Figure 1, the present embodiment also comprises the steps:
Step 103, UE2 receives the first encapsulated data packet;
Step 104, carries out tunnel decapsulation to the first encapsulated data packet, obtains first network address ip-1.
After UE2 receives the first encapsulated data packet, decapsulation is carried out to the first encapsulated data packet, after decapsulation, obtain initial IP packet, and obtain the network address IP-1 that the first encapsulation Src address is UE1.Now UE2 has obtained the network address IP-1 of UE1 by the first encapsulated data packet that this receives UE1 transmission, and itself also preserves the fixing unique identification address I-IP-1 of UE1.
Step 105, UE2 arranges the reply packet treating to send to UE1, and second source address (the 2nd Src address) of replying in packet is the second home address I-IP-2, and the second destination address (the 2nd Dest address) is the first home address I-IP-1; Replying packet can be IP packet;
Because UE2 is aware of the network address IP-1 of UE1, also know the home address I-IP-1 of UE1, so I-IP-2 is filled in the 2nd Src address that UE2 is replying packet, I-IP-1 is filled in the 2nd Dest address, concrete, can be filled in by the application program of UE1.
Step 106, carry out tunnel encapsulation to reply packet obtain the second encapsulated data packet and send, the second packaged source address (the second encapsulation Src address) in second encapsulated data packet is second network address ip-2, second encapsulation destination address (the second encapsulation Dest address) is first network address ip-1, so that the second encapsulated data packet is sent to UE1 according to first network address by gateway.
UE2 also has IP tunnel function, reply packet to IP to encapsulate, second encapsulation Src address of the second encapsulated data packet after encapsulation is IP-2, second encapsulation Dest address is IP-1, and when gateway is when receiving the second encapsulated data packet that UE1 sends, obtain the first encapsulation Dest address ip-1 of this encapsulated data packet.
Step 107, UE1 receives the second encapsulated data packet;
Step 108, carries out tunnel decapsulation to the second encapsulated data packet, obtains second network address ip 2.
After UE1 receives the second encapsulated data packet, decapsulation is carried out to the second encapsulated data packet, obtain IP after decapsulation and reply packet, and obtain the network address IP-2 that the second encapsulation Src address is UE2.Now UE1 has obtained the network address IP-2 of UE2 by the second encapsulated data packet that this receives UE2 transmission, and itself also preserves the fixing unique identification address I-IP-2 of UE2.
Like this, after this UE1 just can to send the second encapsulated data packet to UE1 as UE2 and send follow-up encapsulated data packet to UE2, because obtained the network address IP-2 of UE2, IP-2 just directly can be filled in the encapsulation Dest address of follow-up like this encapsulated data packet, and can only fill in I-IP-2 during non-sent the first encapsulated data packet.Just directly can forward according to encapsulation Dset address ip-2 after gateway receives follow-up encapsulated data packet, and not need to carry out IP mapping, the second home address is mapped as second network address.
Now UE1 and UE2 is had to network address IP and the home address I-IP of the other side, if need the process being all similar to step 105 and 106 when sending encapsulated data packet to opposite end like this, the Dest address that directly network address IP can be filled in encapsulated data packet has suffered, mapping process with regard to not needing gateway to carry out IP more like this, directly according to Dest address, encapsulated data packet being sent.
Fig. 2 is another flow chart of the transmission method of embodiment of the present invention packet, and as shown in the figure, the present embodiment is the concrete processing procedure of gateway side corresponding to a upper embodiment, comprises the steps:
Step 201, gateway receives the first encapsulated data packet that UE1 sends, the first network address ip-1, the first that the first packaged source address (the first encapsulation Src address) in first encapsulated data packet is UE1 encapsulates destination address (the first encapsulation Dest address) the second home address I-IP-2 corresponding to UE2;
Step 202, is mapped as the second network address of UE2 by the second home address;
Gateway safeguards the network address IP-1 and the home address I-IP-1 that there are UE1, also safeguards the network address IP-2 and the home address I-IP-2 that there are UE2 simultaneously; When receiving the first encapsulated data packet that UE1 sends, obtain the first encapsulation Dest address I-IP-2 of this encapsulated data packet, gateway utilizes IP mapping function that the first encapsulation Dest address I-IP-2 is mapped as the network address IP-2 of UE2.
Step 203, is sent to UE2 according to second network address ip-2 by the first encapsulated data packet, so that the first encapsulated data packet decapsulation is obtained first network address ip-1 by UE2.
Again as shown in Figure 2, the present embodiment also comprises the steps:
Step 204, gateway receives the second encapsulated data packet that UE2 sends, it is first network address ip-1 that the second network address ip-2, the second that the second packaged source address (the second encapsulation Src address) in second encapsulated data packet is UE2 encapsulates destination address (the second encapsulation Dest address);
Step 205, is sent to UE1 according to first network address by the second encapsulated data packet, so that the second encapsulated data packet decapsulation is obtained second network address ip-2 by UE1.
Because UE2 is when the first encapsulated data packet receiving UE1, just obtain the first network address ip-1 of UE1, so when encapsulation second encapsulated data packet, second encapsulation Dest address is extended this as IP-1, time such gateway receives the second encapsulated data packet, second encapsulation Dest address is IP-1, just directly according to IP-1, the second encapsulated data packet can be sent to UE1.Second encapsulated data packet decapsulation is just obtained the second network address ip-2 of UE2 by UE1.Time follow-up UE1 sends formality encapsulated data packet to UE2, IP-2 directly can be filled in the encapsulation Dest address of follow-up encapsulated data packet, and follow-up encapsulated data packet just directly can be sent to UE2 according to IP-2 by such gateway, and maps without the need to re-using IP.
The transmission method of embodiment of the present invention packet carries out the encapsulation of initial data packets in UE side, again and when not knowing the destination address of the network address, be encapsulated into the destination address of home address, IP mapping can be carried out at the gateway of network layer, home address is mapped as the network address, and do not need the network address of end side understand target terminal, the problem of UE initial ip address change can be solved, the UE of application layer only needs to know the mark IP of oneself and object UE, the change of IP address is completely transparent to it, do not need application server or miscellaneous equipment first to exchange between UE communication that IP address carries out UE again, processing method is simple.
Fig. 3 is the flow chart of the transmission method of another packet of the embodiment of the present invention, and as shown in the figure, the present embodiment is the concrete processing procedure of UE side, comprises the steps:
Step 301, UE1 arrange the initial data packets treating to send to UE2, and initial data packets comprises the first home address I-IP-1 of UE1; And the first network address ip-1 that the first source address (a Src address) in initial data packets is UE1, first object address (a Dest address) the second home address I-IP-2 corresponding to UE2; Initial data packets can be IP packet;
Send when initial data packets to UE2 at UE1, the live network address of UE2 is not also known, i.e. IP-2 in UE1 side, and only know the home address of UE2, i.e. I-IP-2, and the home address of UE2 is fixing unique and constant, and UE1 so just can be facilitated to be that UE2 sends IP packet.
And UE1 knows network address IP-1 and the home address I-IP-1 of local terminal, so a Src of UE1 extends this as the network address IP-1 of UE1 in the initial data packets sent to UE2, one Dest address extends this as the home address I-IP-2 of UE2, concrete, can be filled in by the application program of UE1.The first home address I-IP-1 of UE1 can be comprised in addition in the load of packet (Payload).
Step 302, to UE2 send initial data packets so that the second home address of initial data packets is mapped as the second network address of UE2 by gateway.
Gateway safeguards the network address IP-1 and the home address I-IP-1 that there are UE1, also safeguards the network address IP-2 and the home address I-IP-2 that there are UE2 simultaneously; When receiving the IP initial data packets that UE1 sends, obtain a Dest address I-IP-2 of this initial data packets, gateway utilizes IP mapping function that the one Dest address I-IP-2 is mapped as the network address IP-2 of UE2; Initial data packets is sent to UE2 according to the network address IP-2 of UE2 by gateway.
Again as shown in Figure 3, the present embodiment also comprises the steps:
Step 303, UE2 receive initial data packets;
Step 304, from initial data packets, obtain first network address ip-1.
After UE2 receives IP initial data packets, obtain the network address IP-2 of network address IP-1 that a Src address is a UE1 and Dest, and from the Payload of IP packet, obtain the home address I-IP-1 of UE1, learn that this packet is that UE1 sends to oneself.
Now UE2 has obtained the network address IP-1 of UE1 by the IP initial data packets that this receives UE1 transmission, and itself also preserves fixing and unique home address I-IP-1 of UE1.
Step 305, UE2 arrange the reply packet treating to send to UE1, and reply packet comprises the second home address I-IP-2 corresponding to UE2; Reply the second source address (the 2nd Src address) in packet for second network address ip-2, the second destination address (the 2nd Dest address) be first network address ip-1;
Because UE2 is aware of the network address IP-1 of UE1, so IP-2 is filled in the 2nd Src address that UE2 replys packet at IP, IP-1 is filled in 2nd Dest address, concrete, can be filled in by the application program of UE2. in the Payload of packet, comprise the home address information I-IP-2 of UE2 self in addition.
Step 306, send a reply packet to UE1, so that gateway will reply Packet Generation to UE1 according to first network address.
After gateway receives IP packet, because the 2nd Dest address is network address IP-1, so no longer need its IP mapping function process, directly IP Packet Generation will be encapsulated to UE1 according to Dest address ip-1.
Step 307, UE1 receive and reply packet, obtain second network address ip-2.
After UE1 receives IP reply packet, the 2nd Src address recognized is exactly network address IP-2,2nd Dest address is network address IP-1, can reply from IP the home address I-IP-2 obtaining UE2 the Payload of packet in addition, and itself also preserve the fixing unique identification address I-IP-2 of UE2.
Like this, after this UE1 just can to send a reply packet to UE1 as UE2 and send follow-up data bag to UE2, because obtained the network address IP-2 of UE2, IP-2 just directly can have been filled in the Dest address of such follow-up data bag, and can only fill in I-IP-2 during non-sent initial data packets.Just directly can forward according to Dset address after gateway receives follow-up data bag, and not need to carry out IP mapping, the second home address is mapped as second network address.
Now UE1 and UE2 is had to network address IP and the home address I-IP of the other side, if need the process being all similar to step 305 and 306 when sending IP packet to opposite end like this, the Dest address that directly network address IP can be filled in IP packet has suffered, so do not need gateway to carry out IP again and map process, directly according to Dest address by IP Packet Generation.
Fig. 4 is another flow chart of the transmission method of another packet of the embodiment of the present invention, and as shown in the figure, the present embodiment is the concrete processing procedure of gateway side corresponding to a upper embodiment, comprises the steps:
Step 401, gateway receives the initial data packets that UE1 sends, and initial data packets comprises the first home address I-IP-1 of UE1; And the first network address ip-1 that the first source address (a Src address) in initial data packets is UE1, first object address (a Dest address) the second home address I-IP-2 corresponding to UE2; Initial data packets can be IP packet;
Gateway safeguards the network address IP-1 and the home address I-IP-1 that there are UE1, also safeguards the network address IP-2 and the home address I-IP-2 that there are UE2 simultaneously; When receiving the IP initial data packets that UE1 sends, obtain a Dest address I-IP-2 of this initial data packets.
Step 402, is mapped as the second network address of UE2 by the second home address;
Gateway utilizes IP mapping function that the one Dest address I-IP-2 is mapped as the network address IP-2 of UE2,
Step 403, is sent to UE2 according to second network address by initial data packets, so that UE2 obtains first network address ip-1 from initial data packets.
Initial data packets is sent to UE2 according to the network address IP-2 of UE2 by gateway,
Again as shown in Figure 4, the present embodiment also comprises the steps:
Step 404, gateway receives the reply packet that UE2 sends, and reply packet comprises the second home address I-IP-2 corresponding to UE2; Reply the second source address (the 2nd Src address) in packet for second network address ip-2, the second destination address (the 2nd Dest address) be first network address ip-1;
Step 405, will reply Packet Generation to UE1 according to first network address, so that UE1 obtains second network address ip-2 from reply packet.
After gateway receives IP packet, because the 2nd Dest address is network address IP-1, so no longer need its IP mapping function process, directly IP Packet Generation will be encapsulated to UE1 according to Dest address ip-1.
Because UE2 is when the initial data packets receiving UE1, just obtain the first network address ip-1 of UE1, so when arranging reply packet, 2nd Dest address is extended this as IP-1, time such gateway receives and replys packet, 2nd Dest address is IP-1, just directly can will reply Packet Generation to UE1 according to IP-1.UE1 just obtains the second network address ip-2 of UE2.Time follow-up UE1 sends formality packet to UE2, IP-2 directly can be filled in the encapsulation Dest address of follow-up data bag, and follow-up data bag just directly can be sent to UE2 according to IP-2 by such gateway, and maps without the need to re-using IP.
The transmission method of the packet of the present embodiment, this terminal I-IP is carried in the load when application layer UE sends initial data packets, and in Dest address, fill in the I-IP of target terminal, utilize the gateway of network side to carry out IP address that IP is mapped as target terminal, target terminal then can obtain the IP address of source terminal according to initial data packets.Target terminal utilizes the IP address of replying and informing source terminal target terminal in packet, such terminal transmission packet in without the need to knowing the IP address of distant terminal, the problem of the initial IP change of same solution UE, do not need application server or miscellaneous equipment between UE, first exchange IP address to communicate, processing method is simple again.And UE does not need to have IP tunnel function, do not increase IP bag size.
Fig. 5 is the schematic diagram of the transmitting device of embodiment of the present invention packet, and as shown in the figure, the present embodiment specifically comprises: setting unit 11 and 12 encapsulation unit.
Setting unit 11 arranges the initial data packets treating to send to the second mobile terminal UE 2 for the first mobile terminal UE 1, the first source address (a Src address) the first home address I-IP-1 corresponding to the first mobile terminal in initial data packets, first object address (a Dest address) the second home address I-IP-2 corresponding to UE2;
Encapsulation unit 12 obtains the first encapsulated data packet for carrying out tunnel encapsulation to initial data packets and sends, the first network address ip-1 that the first packaged source address (the first encapsulation Src address) in first encapsulated data packet is UE1, first encapsulation destination address (the first encapsulation Dest address) is the second home address I-IP-2, so that the second home address is mapped as the second network address ip-2 of UE2 by gateway.
UE1 has IP tunnel function, IP initial data packets is encapsulated, first encapsulation Src address of the first encapsulated data packet after encapsulation is IP-1, first encapsulation Dest address is I-IP-2, and gateway safeguards the network address IP-1 and the home address I-IP-1 that there are UE1, also safeguard the network address IP-2 and the home address I-IP-2 that there are UE2 simultaneously; When receiving the first encapsulated data packet that UE1 sends, obtain the first encapsulation Dest address I-IP-2 of this encapsulated data packet, gateway utilizes IP mapping function that the first encapsulation Dest address I-IP-2 is mapped as the network address IP-2 of UE2.
Again as shown in Figure 5, the present embodiment also comprises receiving element 13 and decapsulation unit 14.
Receiving element 13 receives the first encapsulated data packet for UE2; Decapsulation unit 14, for carrying out tunnel decapsulation to the first encapsulated data packet, obtains first network address ip-1.
Described setting unit 12 also arranges the reply packet treating to send to UE1 for UE2, second source address (the 2nd Src address) of replying in packet is the second home address I-IP-2, and the second destination address (the 2nd Dest address) is the first home address I-IP-1; Replying packet can be IP packet;
Described encapsulation unit 13 also obtains the second encapsulated data packet for carrying out tunnel encapsulation to reply packet and sends, the second packaged source address (the second encapsulation Src address) in second encapsulated data packet is second network address ip-2, second encapsulation destination address (the second encapsulation Dest address) is first network address ip-1, so that the second encapsulated data packet is sent to UE1 according to first network address by gateway.
Described receiving element 13 also receives the second encapsulated data packet for UE1; Described decapsulation unit 14 also for carrying out tunnel decapsulation to the second encapsulated data packet, obtains second network address ip 2.Initial data packets is Internet protocol IP packet, and described first network address and second network address are IP address, and described first home address and the second home address are mark IP address.
Now UE1 and UE2 is had to network address IP and the home address I-IP of the other side, if need the process being all similar to step 105 and 106 when sending encapsulated data packet to opposite end like this, the Dest address that directly network address IP can be filled in encapsulated data packet has suffered, mapping process with regard to not needing gateway to carry out IP more like this, directly according to Dest address, encapsulated data packet being sent.
Fig. 6 is another schematic diagram of the transmitting device of embodiment of the present invention packet, and as shown in the figure, the present embodiment specifically comprises: receiving element 21, map unit 22 and transmitting element 23.
Receiving element 21 receives the first encapsulated data packet of UE1 transmission for gateway, the first network address ip-1, the first that the first packaged source address (the first encapsulation Src address) in first encapsulated data packet is UE1 encapsulates destination address (the first encapsulation Dest address) the second home address I-IP-2 corresponding to UE2;
Map unit 22 is for being mapped as the second network address of UE2 by the second home address;
Transmitting element 23 is for being sent to UE2 according to second network address ip-2 by the first encapsulated data packet, so that the first encapsulated data packet decapsulation is obtained first network address ip-1 by UE2.
Described receiving element 21 also receives the second encapsulated data packet of UE2 transmission for gateway, it is first network address ip-1 that the second network address ip-2, the second that the second packaged source address (the second encapsulation Src address) in second encapsulated data packet is UE2 encapsulates destination address (the second encapsulation Dest address);
Described transmitting element 23 is also for being sent to UE1 according to first network address by the second encapsulated data packet, so that the second encapsulated data packet decapsulation is obtained second network address ip-2 by UE1.Described first network address and second network address are IP address, and described first home address and the second home address are mark IP address.
The transmitting device of embodiment of the present invention packet carries out the encapsulation of initial data packets in UE side, again and when not knowing the destination address of the network address, be encapsulated into the destination address of home address, IP mapping can be carried out at the gateway of network layer, home address is mapped as the network address, and do not need the network address of end side understand target terminal, the problem of UE initial ip address change can be solved, the UE of application layer only needs to know the mark IP of oneself and object UE, the change of IP address is completely transparent to it, do not need application server or miscellaneous equipment first to exchange between UE communication that IP address carries out UE again, process is simple.
Fig. 7 is the schematic diagram of the transmitting device of another embodiment of the present invention packet, and as shown in the figure, the present embodiment specifically comprises: setting unit 31 and transmitting element 32.
Setting unit 31, arrange the initial data packets treating to send to UE2 for UE1, initial data packets comprises the first home address I-IP-1 of UE1; And the first network address ip-1 that the first source address (a Src address) in initial data packets is UE1, first object address (a Dest address) the second home address I-IP-2 corresponding to UE2; Initial data packets can be IP packet location;
Transmitting element 32 is for sending initial data packets, so that the second home address of initial data packets is mapped as the second network address of UE2 by gateway to UE2.
Again as shown in Figure 7, the present embodiment also comprises: receiving element 33 and acquiring unit 34.
Receiving element 33 receives initial data packets for UE2; Acquiring unit 34 for obtaining first network address ip-1 from initial data packets.
Described setting unit 31 also arranges the reply packet treating to send to UE1 for UE2, reply packet comprises the second home address I-IP-2 corresponding to UE2; Reply the second source address (the 2nd Src address) in packet for second network address ip-2, the second destination address (the 2nd Dest address) be first network address ip-1;
Described transmitting element 32 is also for sending a reply packet to UE1, so that gateway will reply Packet Generation to UE1 according to first network address.
Described receiving element 33 also receives for UE1 and replys packet, obtains second network address ip-2.Described initial data packets specifically comprises described first home address at load P ayload; Described reply packet specifically comprises described second home address in the load.Described first network address and second network address are IP address, and described first home address and the second home address are mark IP address.
Now UE1 and UE2 is had to network address IP and the home address I-IP of the other side, if need the process being all similar to step 305 and 306 when sending IP packet to opposite end like this, the Dest address that directly network address IP can be filled in IP packet has suffered, so do not need gateway to carry out IP again and map process, directly according to Dest address by IP Packet Generation.
Fig. 8 is another schematic diagram of the transmitting device of another embodiment of the present invention packet, and as shown in the figure, the present embodiment specifically comprises: receiving element 41, map unit 42 and transmitting element 43.
Receiving element 41 receives the initial data packets of UE1 transmission for gateway, and initial data packets comprises the first home address I-IP-1 of UE1; And the first network address ip-1 that the first source address (a Src address) in initial data packets is UE1, first object address (a Dest address) the second home address I-IP-2 corresponding to UE2; Initial data packets can be IP packet; ;
Map unit 42 is for being mapped as the second network address of UE2 by the second home address;
Transmitting element 43 is for being sent to UE2 according to second network address by initial data packets, so that UE2 obtains first network address ip-1 from initial data packets.
Described receiving element 41 also receives the reply packet of UE2 transmission for gateway, reply packet comprises the second home address I-IP-2 corresponding to UE2; Reply the second source address (the 2nd Src address) in packet for second network address ip-2, the second destination address (the 2nd Dest address) be first network address ip-1;
Described transmitting element 43 will be also for replying Packet Generation to UE1 according to first network address, so that UE1 obtains second network address ip-2 from reply packet.Described initial data packets specifically comprises described first home address in the load; Described reply packet specifically comprises described second home address in the load.Described first network address and second network address are IP address, and described first home address and the second home address are mark IP address.
The transmitting device of the packet of the present embodiment, this terminal I-IP is carried in the load when application layer UE sends initial data packets, and in Dest address, fill in the I-IP of target terminal, utilize the gateway of network side to carry out IP address that IP is mapped as target terminal, target terminal then can obtain the IP address of source terminal according to initial data packets.Target terminal utilizes the IP address of replying and informing source terminal target terminal in packet, such terminal transmission packet in without the need to knowing the IP address of distant terminal, the problem of the initial IP change of same solution UE, do not need application server or miscellaneous equipment between UE, first exchange IP address to communicate, processing method is simple again.And UE does not need to have IP tunnel function, do not increase IP bag size.
Professional should recognize further, in conjunction with unit and the algorithm steps of each example of embodiment disclosed herein description, can realize with electronic hardware, computer software or the combination of the two, in order to the interchangeability of hardware and software is clearly described, generally describe composition and the step of each example in the above description according to function.These functions perform with hardware or software mode actually, depend on application-specific and the design constraint of technical scheme.Professional and technical personnel can use distinct methods to realize described function to each specifically should being used for, but this realization should not thought and exceeds scope of the present invention.
The software module that the method described in conjunction with embodiment disclosed herein or the step of algorithm can use hardware, processor to perform, or the combination of the two is implemented.Software module can be placed in the storage medium of other form any known in random asccess memory (RAM), internal memory, read-only memory (ROM), electrically programmable ROM, electrically erasable ROM, register, hard disk, moveable magnetic disc, CD-ROM or technical field.
Above-described embodiment; object of the present invention, technical scheme and beneficial effect are further described; be understood that; the foregoing is only the specific embodiment of the present invention; the protection range be not intended to limit the present invention; within the spirit and principles in the present invention all, any amendment made, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (28)
1. a transmission method for packet, is characterized in that, described method comprises:
First mobile terminal arranges the initial data packets treating to send to the second mobile terminal, first home address of the first source address in described initial data packets corresponding to described first mobile terminal, second home address of first object address corresponding to described second mobile terminal, described home address is fixed each terminal and unique, and completely independent with the internet protocol address form of network allocation;
Carry out tunnel encapsulation to described initial data packets obtain the first encapsulated data packet and send, the first packaged source address in described first encapsulated data packet is the first network address of described first mobile terminal, first encapsulation destination address is described second home address, so that described second home address is mapped as the second network address of described second mobile terminal by gateway;
Described initial data packets is IP packet, and described first network address and second network address are IP address, and described first home address and the second home address are mark IP address.
2. method according to claim 1, is characterized in that, described method also comprises:
Described second mobile terminal receives described first encapsulated data packet;
Tunnel decapsulation is carried out to described first encapsulated data packet, obtains described first network address.
3. method according to claim 2, is characterized in that, described method also comprises:
Described second mobile terminal arranges the reply packet treating to send to described first mobile terminal, and the second source address in described reply packet is described second home address, and the second destination address is described first home address;
Carry out tunnel encapsulation to described reply packet obtain the second encapsulated data packet and send, the second packaged source address in described second encapsulated data packet is described second network address, second encapsulation destination address is described first network address, so that described second encapsulated data packet is sent to described first mobile terminal according to described first network address by described gateway.
4. method according to claim 3, is characterized in that, described method also comprises:
Described first mobile terminal receives described second encapsulated data packet;
Tunnel decapsulation is carried out to described second encapsulated data packet, obtains described second network address.
5. a transmission method for packet, is characterized in that, described method comprises:
Gateway receives the first encapsulated data packet that the first mobile terminal sends, the first packaged source address in described first encapsulated data packet is the first network address of described first mobile terminal, first encapsulation second home address of destination address corresponding to the second mobile terminal, described home address is fixed each terminal and unique, and completely independent with the internet protocol address form of network allocation;
Described second home address is mapped as the second network address of described second mobile terminal by described gateway;
Described first encapsulated data packet is sent to described second mobile terminal according to described second network address by described gateway, so that described first encapsulated data packet decapsulation is obtained described first network address by described second mobile terminal;
Described first network address and second network address are IP address, and described first home address and the second home address are mark IP address.
6. the transmission method of packet according to claim 5, is characterized in that, described method also comprises:
Described gateway receives the second encapsulated data packet that described second mobile terminal sends, and the second packaged source address in described second encapsulated data packet is the second network address of described second mobile terminal, and the second encapsulation destination address is described first network address;
According to described first network address, described second encapsulated data packet is sent to described first mobile terminal, so that described second encapsulated data packet decapsulation is obtained described second network address by described first mobile terminal.
7. a transmission method for packet, is characterized in that, described method comprises:
First mobile terminal arranges the initial data packets treating to send to the second mobile terminal, and described initial data packets comprises the first home address of described first mobile terminal; And the first source address in described initial data packets is the first network address of described first mobile terminal, second home address of first object address corresponding to described second mobile terminal, described home address is fixed each terminal and unique, and completely independent with the internet protocol address form of network allocation;
Initial data packets is sent, so that the second home address of described initial data packets is mapped as the second network address of described second mobile terminal by gateway to the second mobile terminal;
Described first network address and second network address are IP address, and described first home address and the second home address are mark IP address.
8. the transmission method of packet according to claim 7, is characterized in that, described method also comprises:
Described second mobile terminal receives described initial data packets;
Described first network address is obtained from described initial data packets.
9. method according to claim 8, is characterized in that, described method also comprises:
Described second mobile terminal arranges the reply packet treating to send to described first mobile terminal, and described reply packet comprises the second home address corresponding to described second mobile terminal; The second source address in described reply packet is described second network address, and the second destination address is described first network address;
Packet is sent a reply, so that described reply Packet Generation is given described first mobile terminal according to described first network address by described gateway to described first mobile terminal.
10. method according to claim 9, is characterized in that, described method also comprises:
Described first mobile terminal receives described reply packet, obtains described second network address.
The transmission method of 11. packets according to claim 9 or 10, it is characterized in that, described initial data packets specifically comprises described first home address in the load; Described reply packet specifically comprises described second home address in the load.
The transmission method of 12. 1 kinds of packets, is characterized in that, described method comprises:
Gateway receives the initial data packets that the first mobile terminal sends, and described initial data packets comprises the first home address of described first mobile terminal; And the first source address in described initial data packets is the first network address of described first mobile terminal, second home address of first object address corresponding to described second mobile terminal, described home address is fixed each terminal and unique, and completely independent with the internet protocol address form of network allocation;
Described second home address is mapped as the second network address of described second mobile terminal by described gateway;
Described initial data packets is sent to described second mobile terminal according to described second network address by described gateway, so that described second mobile terminal obtains described first network address from described initial data packets;
Described first network address and second network address are IP address, and described first home address and the second home address are mark IP address.
The transmission method of 13. packets according to claim 12, is characterized in that, described method also comprises:
Described gateway receives the reply packet that described second mobile terminal sends, and described reply packet comprises the second home address corresponding to described second mobile terminal; The second source address in described reply packet is described second network address, and the second destination address is described first network address;
Described first mobile terminal is given, so that described first mobile terminal obtains described second network address from described reply packet by described reply Packet Generation according to described first network address.
The transmission method of 14. packets according to claim 13, is characterized in that, described initial data packets specifically comprises described first home address in the load; Described reply packet specifically comprises described second home address in the load.
The transmitting device of 15. 1 kinds of packets, is characterized in that, described device comprises: setting unit and encapsulation unit;
Setting unit, the initial data packets treating to send to the second mobile terminal is set for the first mobile terminal, first home address of the first source address in described initial data packets corresponding to described first mobile terminal, second home address of first object address corresponding to described second mobile terminal, described home address is fixed each terminal and unique, and completely independent with the internet protocol address form of network allocation;
Encapsulation unit, obtain the first encapsulated data packet for carrying out tunnel encapsulation to described initial data packets and send, the first packaged source address in described first encapsulated data packet is the first network address of described first mobile terminal, first encapsulation destination address is described second home address, so that described second home address is mapped as the second network address of described second mobile terminal by gateway;
Described initial data packets is IP packet, and described first network address and second network address are IP address, and described first home address and the second home address are mark IP address.
16. devices according to claim 15, is characterized in that, described device also comprises:
Receiving element, receives described first encapsulated data packet for described second mobile terminal;
Decapsulation unit, for carrying out tunnel decapsulation to described first encapsulated data packet, obtains described first network address.
17. devices according to claim 16, is characterized in that:
Described setting unit also arranges the reply packet treating to send to described first mobile terminal for described second mobile terminal, the second source address in described reply packet is described second home address, and the second destination address is described first home address;
Described encapsulation unit also obtains the second encapsulated data packet for carrying out tunnel encapsulation to described reply packet and sends, the second packaged source address in described second encapsulated data packet is described second network address, second encapsulation destination address is described first network address, so that described second encapsulated data packet is sent to described first mobile terminal according to described first network address by described gateway.
18. devices according to claim 17, is characterized in that:
Described receiving element also receives described second encapsulated data packet for described first mobile terminal;
Described decapsulation unit also for carrying out tunnel decapsulation to described second encapsulated data packet, obtains described second network address.
The transmitting device of 19. 1 kinds of packets, is characterized in that, described device comprises: receiving element, map unit and transmitting element;
Receiving element, the first encapsulated data packet of the first mobile terminal transmission is received for gateway, the first packaged source address in described first encapsulated data packet is the first network address of described first mobile terminal, first encapsulation second home address of destination address corresponding to the second mobile terminal, described home address is fixed each terminal and unique, and completely independent with the internet protocol address form of network allocation;
Map unit, is mapped as the second network address of described second mobile terminal by described second home address for described gateway;
Transmitting element, is sent to described second mobile terminal according to described second network address by described first encapsulated data packet for described gateway, so that described first encapsulated data packet decapsulation is obtained described first network address by described second mobile terminal;
Described first network address and second network address are IP address, and described first home address and the second home address are mark IP address.
The transmitting device of 20. packets according to claim 19, is characterized in that:
Described receiving element also receives the second encapsulated data packet of described second mobile terminal transmission for described gateway, the second packaged source address in described second encapsulated data packet is the second network address of described second mobile terminal, and the second encapsulation destination address is described first network address;
Described transmitting element is also for being sent to described first mobile terminal according to described first network address by described second encapsulated data packet, so that described second encapsulated data packet decapsulation is obtained described second network address by described first mobile terminal.
The transmitting device of 21. 1 kinds of packets, is characterized in that, described device comprises setting unit and transmitting element:
Setting unit, arrange the initial data packets treating to send to the second mobile terminal for the first mobile terminal, described initial data packets comprises the first home address of described first mobile terminal; And the first network address that the first source address in described initial data packets is described first mobile terminal, second home address of first object address corresponding to described second mobile terminal, described home address is fixed each terminal and unique, and completely independent with the internet protocol address form of network allocation;
Transmitting element, for sending initial data packets, so that described second home address in described initial data packets is mapped as the second network address of described second mobile terminal by gateway to described second mobile terminal;
Described first network address and second network address are IP address, and described first home address and the second home address are mark IP address.
The transmitting device of 22. packets according to claim 21, is characterized in that, described device also comprises:
Receiving element, receives described initial data packets for described second mobile terminal;
Acquiring unit, for obtaining described first network address from described initial data packets.
23. devices according to claim 22, is characterized in that:
Described setting unit also arranges the reply packet treating to send to described first mobile terminal for described second mobile terminal, described reply packet comprises the second home address corresponding to described second mobile terminal; The second source address in described reply packet is described second network address, and the second destination address is described first network address;
Described transmitting element is also for sending a reply packet to described first mobile terminal, so that described reply Packet Generation is given described first mobile terminal according to described first network address by described gateway.
24. devices according to claim 23, is characterized in that: described receiving element also receives described reply packet for described first mobile terminal, obtain described second network address.
The transmitting device of 25. packets according to claim 23 or 24, it is characterized in that, described initial data packets specifically comprises described first home address in the load; Described reply packet specifically comprises described second home address in the load.
The transmitting device of 26. 1 kinds of packets, is characterized in that, described device comprises: receiving element, map unit and transmitting element;
Receiving element, receive the initial data packets of the first mobile terminal transmission for gateway, described initial data packets comprises the first home address of described first mobile terminal; And the first source address in described initial data packets is the first network address of described first mobile terminal, second home address of first object address corresponding to described second mobile terminal, described home address is fixed each terminal and unique, and completely independent with the internet protocol address form of network allocation;
Map unit, is mapped as the second network address of described second mobile terminal by described second home address for described gateway;
Transmitting element, is sent to described second mobile terminal according to described second network address by described initial data packets for described gateway, so that described second mobile terminal obtains described first network address from described initial data packets;
Described first network address and second network address are IP address, and described first home address and the second home address are mark IP address.
The transmitting device of 27. packets according to claim 26, is characterized in that:
Described receiving element also receives the reply packet of described second mobile terminal transmission for described gateway, described reply packet comprises the second home address corresponding to described second mobile terminal; The second source address in described reply packet is described second network address, and the second destination address is described first network address;
Described transmitting element is also for giving described first mobile terminal, so that described first mobile terminal obtains described second network address from described reply packet according to described first network address by described reply Packet Generation.
The transmitting device of 28. packets according to claim 27, is characterized in that, described initial data packets specifically comprises described first home address in the load; Described reply packet specifically comprises described second home address in the load.
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