CN102006215B - Data transmission method, system and apparatus - Google Patents
Data transmission method, system and apparatus Download PDFInfo
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- CN102006215B CN102006215B CN2009100921265A CN200910092126A CN102006215B CN 102006215 B CN102006215 B CN 102006215B CN 2009100921265 A CN2009100921265 A CN 2009100921265A CN 200910092126 A CN200910092126 A CN 200910092126A CN 102006215 B CN102006215 B CN 102006215B
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Abstract
The invention discloses data transmission method, system and apparatus. The negotiation on the type of a transmission layer protocol is realized through expanding mobility management signaling in a PMIPv6 system. The data transmission is carried out through a transmission layer protocol when the negotiation is successful, therefore, the reliability of the data transmission can be ensured by utilizing a mechanism specified by the transmission layer protocol in the data transmission among net elements in the PMIPv6 system.
Description
Technical field
The present invention relates to the communications field, relate in particular to a kind of data transmission method, system and equipment.
Background technology
RFC (request for comments) 5213 has defined a kind of new agency and has moved standard: proxy mobile IPv 6 (PMIPv6) standard, and PMIPv6 is a kind of based on network mobile management scheme, the reciprocal process of mobile management signaling need not participated in the terminal.Because PMIPv6 has the advantage at compatible existing terminal, therefore, the 3GPP standard is used for PMIPv6 scenes such as the non-3GPP access of System Architecture Evolution (SAE).
The network element that is applied to PMIPv6 mainly contains Mobile Access Gateway (MAG) and local mobile management anchor point (LMA), and the mobile management signaling that adopts when transmitting data between the two is agent binding update (PBU)/agent binding response (PBA) message.Because PMIPv6 is a kind of based on network mobile management scheme, therefore, the PBU/PBA message is to utilize the IPv6 extension header to carry data, carries out the transfer of data between MAG and the LMA.
When using PBU/PBA message transmissions data; Owing to can't adopt transport layer protocol to guarantee the reliability of transmitting between MAG and the LMA in the existing P MIPv6 standard; Therefore; When the PBU/PBA message transmits between MAG and LMA, lose or when producing, do not have effective processing means, thereby influence the performance that switch at the terminal than long time delay; In addition, more at the scaling option of PBU/PBA message definition, make that router can't carry out burst to message in routing procedure, makes the recipient can't correctly receive and handle message when the PBU/PBA message length surpassed the length of link layer regulation.
Summary of the invention
The embodiment of the invention provides a kind of data transmission method, system and equipment, makes that communicating pair can carry out transfer of data through transport layer protocol in the PMIPv6 system, and then solves the lower problem of data transmission credibility.
A kind of data transmission method is applied to the proxy mobile IPv 6 system, and said method comprises:
First network element sends agreement request to second network element, carries the transport layer protocol type that first network element is supported in the said agreement request;
Second network element is selected the transport layer protocol type self supported from the transport layer protocol type that receives, and response message returns to first network element with the transport layer protocol type of selecting through consultation;
First network element and second network element carry out transfer of data through the corresponding transport layer protocol of selecting of transport layer protocol type;
First network element determines whether to need to continue to use the transport layer protocol and second network element to carry out transfer of data, and if not, then first network element sends to second network element and stops the transport layer protocol request;
If second network element is agreed to stop, then return to first network element and stop successfully to identify, and carry data with the Header option header option of first network element through IPv6 through stopping response message, carry out transfer of data;
If second network element disagrees with and stop, then return to first network element and stop the failure sign, and carry out transfer of data through the corresponding transport layer protocol of selecting of transport layer protocol type with first network element through stopping response message.
A kind of data transmission system is applied to the proxy mobile IPv 6 system, and said data transmission system comprises first network element and second network element, wherein:
Said first network element is used for sending agreement request and stopping the transport layer protocol request to second network element, carries the transport layer protocol type that first network element is supported in the said agreement request;
Said second network element; Be used for from the transport layer protocol type of transport layer protocol type selection self support that receives; Response message returns to first network element with the transport layer protocol type of selecting through consultation, and carries out transfer of data through the corresponding transport layer protocol and first network element of selecting of transport layer protocol type, and when agreeing to stop transport layer protocol; Return to first network element and stop successfully to identify through stopping response message; And carry data with the Header option header option of first network element through IPv6, and carry out transfer of data, disagreeing with when stopping transport layer protocol; Return to first network element and stop failure sign through stopping response message, and carry out transfer of data through the corresponding transport layer protocol of selecting of transport layer protocol type with first network element.
A kind of network equipment is applied to the proxy mobile IPv 6 system, and the said network equipment comprises:
The agreement request sending module is used for sending agreement request and stopping the transport layer protocol request to other network equipments, carries the transport layer protocol type of self supporting in the said agreement request;
The agreement request receiver module is used to receive the agreement request of other network equipments transmissions and stop the transport layer protocol request, and said agreement request is carried the transport layer protocol type that other network equipments are supported;
Consult Executive Module; Be used for from the transport layer protocol type of transport layer protocol type selection self support that receives; And response message returns to other network equipments with the transport layer protocol type of selecting through consultation, and when agreeing to stop transport layer protocol, returns to other network equipments and stops successfully to identify through stopping response message; When refusal stops transport layer protocol, return to other network equipments and stop failure sign through stopping response message;
Data transmission module; Be used for carrying out transfer of data through corresponding transport layer protocol and other network equipments of selecting of transport layer protocol type; And when consulting Executive Module and agree to stop transport layer protocol, the Header option header option through IPv6 carries data, carries out transfer of data with other network equipments; When negotiation Executive Module refusal stops transport layer protocol, carry out transfer of data through corresponding transport layer protocol and other network equipments of selecting of transport layer protocol type.
Because in the embodiment of the invention; Expansion to the mobile management signaling in the PMIPv6 system; Realize the negotiation of transport layer protocol type; The PMIPv6 network element carries out transfer of data through transport layer protocol when consulting successfully, and therefore, the data transmission procedure in the PMIPv6 system between the network element can utilize the mechanism of transport layer protocol regulation to guarantee reliability of data transmission.
Description of drawings
Fig. 1 is for really carrying out the method sketch map of transfer of data in the embodiment of the invention one;
Fig. 2 consults the choice format sketch map for the transport layer that defines in the PBU/PBA message scaling option in the embodiment of the invention two;
Fig. 3～Fig. 8 is a message scaling option radical sketch map in the embodiment of the invention two;
Fig. 9 is a data transmission system structural representation in the embodiment of the invention three;
Figure 10 is a network equipment sketch map in the embodiment of the invention four.
Embodiment
Since between MAG and the LMA according to the PMIPv6 standard; Can only carry data through the IPv6 extension header and carry out transfer of data; And can't adopt transport layer protocol; Make the reliability of host-host protocol can not get guaranteeing that message transmitting party can't be carried out burst to message simultaneously, makes the recipient can't correctly receive and handle message.In order to realize the object of the invention; The present invention expands the mobile management signaling among the PMIPv6; Thereby make MAG and LMA can through the expansion after the mobile management signaling to whether using transport layer protocol to hold consultation; After consulting successfully, realize transfer of data, to improve the reliability of transmission through transport layer protocol.
Below in conjunction with Figure of description the embodiment of the invention is elaborated.
Embodiment one:
As shown in Figure 1, for carrying out the method sketch map of transfer of data in the embodiment of the invention one, the application scenarios of various embodiments of the present invention scheme is the PMIPv6 protocol system.
The scheme of embodiment one may further comprise the steps:
Step 101: first network element sends agreement request to second network element, carries the transport layer protocol type that first network element is supported in the said agreement request.
First network element in the present embodiment is MAG or LMA, and second network element is MAG or LMA, and therefore, the transmission course in the present embodiment can be between MAG and LMA, to carry out, and also can be between LMA and LMA, to carry out, and can also be between MAG and MAG, to carry out.
Transport layer protocol in the present embodiment includes but not limited to following agreement: stream control transmission protocol (SCTP), transmission control protocol (TCP) and UDP (UDP).
Agreement request in the present embodiment can be carried through the PBU message, in the extended field of PBU message, writes the transport layer protocol type that first network element is supported.Consider that directly in the extended field of PBU message, writing the transport layer protocol typonym need take a large amount of bytes; Therefore; First network element and second network element write down each transport layer protocol type corresponding identification in advance, and first network element writes the transport layer protocol type corresponding identification of self supporting in the extended field of PBU message.
Step 102: second network element is selected the transport layer protocol type self supported from the transport layer protocol type that receives.
Second network element is confirmed the transport layer protocol that first network element can be supported according to the transport layer protocol type of carrying in the agreement request that receives, and then judges whether the transport layer protocol type of self supporting is included in the transport layer protocol type that receives.If then second network element is from selecting a transport layer protocol type with spreading out of the layer protocol type of all supporting of first network element.If second network element is not supported the transport layer protocol type that receives; Or the format error of transport layer protocol type in agreement request that receives; Then response message will be consulted the failure sign and return to first network element through consultation; In the case, first network element and second network element carry data through the Header option (header option) of using IPv6, and then realize transfer of data.
Step 103: second network element response message through consultation returns to first network element with the transport layer protocol type of selecting.
Negotiate response message can be carried through the PBA message, in the extended field of PBA message, writes the transport layer protocol type corresponding identification that second network element is selected.
Step 104: first network element and second network element carry out transfer of data through the corresponding transport layer protocol of selecting of transport layer protocol type.
Through the negotiations process of step 101～step 103, first network element and second network element consult to confirm available transport layer protocol type, and the follow-up corresponding transport layer protocol of transport layer protocol type that negotiates that just can utilize carries out transfer of data.Because the transport layer protocol that adopts between first network element and second network element carries out transfer of data, therefore, can in data transmission procedure, adopt the mechanism of stipulating in the transport layer protocol to guarantee reliability of data transmission.For example: when using Stream Control Transmission Protocol transmission data, because SCTP can provide stable, orderly data delivery service between first network element and second network element, and can the protected data message boundaries, therefore, can guarantee reliability of data transmission effectively.
Further, when first network element confirms that the length of data to be transmitted surpasses specific length, can carry out burst to data according to the corresponding transport layer protocol of the transport layer protocol type of selecting, and data behind the burst are transferred to second network element according to transport layer protocol.Because when transmitting through transport layer protocol; Transmitter side can carry out burst to data; The message of in routing procedure, being received according to the burst mechanism butt joint of stipulating in the transport layer protocol by router carries out fragment combination; Message to sending carries out burst, makes receiving terminal can correctly receive message, improves safety of data transmission.
Step 105: first network element sends to second network element and stops the transport layer protocol request.
Carry out in the process of transfer of data through transport layer protocol at first network element and second network element,, can send to second network element and stop the transport layer protocol request if when first network element hopes stop to use transport layer protocol.If second network element hopes to stop using transport layer protocol, also can be to first network element transmission stopping transport layer protocol request.
In this step, can be according to the information of administrator configurations, or current actual network conditions determines whether also to continue to use transport layer protocol to carry out transfer of data.If current network conditions is (like packet loss less than setting threshold value) better, then can stop using transport layer protocol to carry out transfer of data.
Stop the transport layer protocol request and carry, the flag bit that the request of in the extended field of PBU message, writing stops through the PBU message.
Step 106: second network element is judged the current transport layer protocol of whether agreeing to stop using, if agree that then execution in step 107; Otherwise execution in step 108.
Second network element can determine whether to agree to stop using transport layer protocol according to configuration information or the current actual network conditions of self, if current network conditions is better, then can stop using transport layer protocol to carry out transfer of data; Otherwise refusal stops using transport layer protocol to carry out transfer of data.
Step 107: second network element returns to first network element and stops successfully to identify through stopping response message, and carries out transfer of data with first network element through the mode of acquiescence.
When not using transport layer protocol, can use the header option of IPv6 to carry data according to the regulation among the RFC5213 between first network element and second network element, and then realize transfer of data.
Stop response message and carry, in the extended field of PBA message, write and stop successfully to identify through the PBA message.
Before DTD between first network element and second network element, any network element can ask to consult the transport layer protocol type once more to the other side.
Step 108: second network element returns to first network element and stops failure sign through stopping response message, and continues to carry out transfer of data through the transport layer protocol type of selecting with first network element.
Embodiment two:
The embodiment of the invention two is the implementation procedures of coming illustrative embodiment one scheme through a concrete instance; Suppose among the embodiment two it is the process of carrying out transfer of data between MAG and the LMA; As shown in Figure 2; Consult the choice format sketch map for the transport layer that defines in the PBU/PBA message scaling option, this transport layer is consulted the scaling option (Mobility Options) that option is attached to PBU/PBA message in the PMIPv6 agreement.
The implication that transport layer is consulted each territory of option is:
Type: the expression option type, occurrence is undetermined, and the value TBD of Type representes transport layer negotiation option in the present invention.
Length: the expression option, its content is a byte number, the byte number of the value indication of Length does not comprise the byte number that Type territory and Length territory take.
Transport Protocol Type: the transport layer protocol type that the expression transmit leg can be supported.Its value is one or more in the following content:
001: the expression Stream Control Transmission Protocol;
002: the expression Transmission Control Protocol;
003: the expression udp protocol;
Other: other transport layer protocol types that can consult between expression MAG and the LMA.
Status: expression status indicator sign indicating number, represent different implications according to different values wherein.
000: the expression transport layer protocol is consulted success or is stopped the transport layer protocol success;
001: the expression transport layer protocol is consulted failure, and is former because LMA does not support the transport layer protocol type of MAG;
002: the expression transport layer protocol is consulted failure, and former because among the PBU that MAG sends, transport layer is consulted the choice format mistake;
003: expression stops transport layer protocol failure, formerly because LMA thinks temporarily can not stop;
Other: other possible negotiation result and reason between expression MAG and the LMA.
Flag bit: the purpose of representing the PBU/PBA message of this transmission.
Flag bit T: when this mark position 1, the expression transport layer is consulted the agreement request that option is to use transport layer protocol;
Flag bit E: when this mark position 1, it is the agreement request that stops transport layer protocol that the expression transport layer is consulted option;
A: when this mark position 1, agree to use transport layer protocol, when this mark position 0, the expression refusal uses transport layer protocol, and concrete reason can be by the status indicator representation in Status territory;
R: when this mark position 1, agree to stop transport layer protocol, when this mark position 0, the expression refusal stops transport layer protocol, and concrete reason can be by the status indicator representation in Status territory.
Reserved: expression keeps the position, and the expression transport layer is consulted other expansions of option.
After the transport layer negotiation choice format that defines in the PBU/PBA message scaling option was according to formal definition shown in Figure 2, the data transmission procedure of the embodiment of the invention two was following:
The first step: MAG sends the PBU message to LMA, and it is as shown in Figure 3 that transport layer is consulted option in the said PBU message, and wherein, flag bit T puts 1, and what carry in the expression PBU message is the agreement request by the use transport layer protocol of MAG initiation; The value in Transport Protocol Type territory is 001 and 002, and the transport layer protocol type that sign MAG supports is SCTP and TCP.
Second step: after LMA receives the PBU message, confirm that SCTP type wherein is the transport layer protocol type of self supporting.
The 3rd step: LMA returns the PBA message to MAG, and it is as shown in Figure 4 that transport layer is consulted option in the said PBA message, and wherein, flag bit A puts 1, and expression LMA agrees the agreement request that MAG initiates; The value in Status territory puts 000, and the expression transport layer protocol is consulted successfully; The value in Transport Protocol Type territory is 001, and the transport layer protocol type that expression is consulted to confirm is SCTP.
The 4th step: carry out transfer of data through Stream Control Transmission Protocol between MAG and the LMA.
The 5th step: MAG sends the PBU message to LMA, and it is as shown in Figure 5 that transport layer is consulted option in the said PBU message, and wherein, flag bit E puts 1, and what carry in the expression PBU message is the agreement request of being initiated by MAG that stops transport layer protocol.
The 6th step: if LMA confirms the current agreement request that should not stop transport layer protocol, then return the PBA message to MAG, it is as shown in Figure 6 that transport layer is consulted option in the said PBA message, and wherein, flag bit R puts 0, and expression LMA refusal stops transport layer protocol; The value in Status territory puts 003, and expression LMA thinks temporarily can not end transport layer protocol; If LMA confirms the current agreement request that can stop transport layer protocol, then return the PBA message to MAG, it is as shown in Figure 7 that transport layer is consulted option in the said PBA message, and wherein, flag bit R puts 1, and expression LMA agrees to stop transport layer protocol; The value in Status territory puts 000, and expression stops the transport layer protocol success.
The 7th step: when stopping the transport layer protocol failure, still adopt Stream Control Transmission Protocol to carry out transfer of data between MAG and the LMA; When stopping the transport layer protocol success, adopt the header option of IPv6 to carry data between MAG and the LMA, and then realize transfer of data.
If in second step, LMA does not support SCTP and TCP, then returns PBA message as shown in Figure 8 to MAG, wherein, flag bit A puts 0, and expression LMA refusal uses transport layer protocol; The value in Status territory puts 001, and expression LMA refusal uses the former of transport layer protocol because LMA does not support the transport layer protocol type of MAG.
Embodiment three:
The embodiment of the invention three also provides a kind of data transmission system; As shown in Figure 9; Be applied to the proxy mobile IPv 6 system; Said data transmission system comprises first network element 11 and second network element 12, and wherein: said first network element 11 is used for sending agreement request to second network element 12, carries the transport layer protocol type that first network element is supported in the said agreement request; Said second network element 12 is used for from the transport layer protocol type of transport layer protocol type selection self support that receives; And response message returns to first network element with the transport layer protocol type of selecting through consultation, and carries out transfer of data through the corresponding transport layer protocol and first network element of selecting of transport layer protocol type.
During the format error of the transport layer protocol type that said second network element 12 also is used for all not supporting or receive in the transport layer protocol type of confirming to receive in agreement request; Response message will be consulted the failure sign and return to first network element through consultation; And carry data with the header option of first network element 11 through IPv6, carry out transfer of data.
Said first network element 11 also is used for stopping the transport layer protocol request to 12 transmissions of second network element;
Said second network element 12 also is used for when agreeing to stop transport layer protocol, returns to first network element and stops successfully to identify through stopping response message, and carry data with the header option of first network element through IPv6, carries out transfer of data; Otherwise, return to first network element and stop failure sign through stopping response message, and carry out transfer of data through the corresponding transport layer protocol of selecting of transport layer protocol type with first network element.
Correct transmission in order to guarantee to transmit data length greater than specific length; Said first network element 11 also is used for when the length of confirming data to be transmitted surpasses specific length; The transport layer protocol corresponding according to the transport layer protocol type of selecting carries out burst to data, and data behind the burst are transferred to second network element 12 according to transport layer protocol.
Embodiment four:
The embodiment of the invention four also provides a kind of network equipment, and is shown in figure 10, is applied to the PMIPv6 system.The network equipment in the present embodiment can be that MAG also can be the network element in LMA or other PMIPv6 systems.Because the network equipment can be that the initiator of agreement request also can be the recipient of agreement request, therefore, the network equipment in the embodiment of the invention has the function that request is consulted, and also has the function of response agreement request.
The network equipment in the present embodiment four comprises agreement request sending module 21, agreement request receiver module 22, consults Executive Module 23 and data transmission module 24; Wherein: agreement request sending module 21 is used for sending agreement request to other network equipments, carries the transport layer protocol type of self supporting in the said agreement request; Agreement request receiver module 22 is used to receive the agreement request that other network equipments send, and said agreement request is carried the transport layer protocol type that other network equipments are supported; Consult Executive Module 23 and be used for, and response message returns to other network equipments with the transport layer protocol type of selecting through consultation from the transport layer protocol type of transport layer protocol type selection self support that receives; Data transmission module 24 is used for carrying out transfer of data through corresponding transport layer protocol and other network equipments of selecting of transport layer protocol type.
During the format error of the transport layer protocol type that said negotiation Executive Module 23 also is used for all not supporting or receive in the transport layer protocol type of confirming to receive in agreement request, response message will be consulted the failure sign and return to other network equipments through consultation; Said data transmission module 24 also is used for carrying data with the header option of other network equipments through IPv6, carries out transfer of data.
Agreement request sending module 21 also is used for to other network equipment transmission stopping transport layer protocol requests; Agreement request receiver module 22 is used to also to receive that other network equipments send stops the transport layer protocol request; Said negotiation Executive Module 23 also is used for when agreeing to stop transport layer protocol, returns to first network element and stops successfully to identify through stopping response message; Otherwise, return to first network element and stop failure sign through stopping response message; Said data transmission module 24 is used for when the negotiation Executive Module is agreed to stop transport layer protocol; Header option through through IPv6 carries data; Carry out transfer of data with other network equipments; When negotiation Executive Module refusal stops transport layer protocol, carry out transfer of data through corresponding transport layer protocol and other network equipments of selecting of transport layer protocol type.
The said network equipment also comprises burst module 25, is used for when the length of confirming data to be transmitted surpasses specific length, and the transport layer protocol corresponding according to the transport layer protocol type of selecting carries out burst to data; Said data transmission module 24 also is used for through the data behind the transport layer protocol of the transport layer protocol type correspondence of selecting and other network equipments transmission burst.
Through method, system and equipment that the embodiment of the invention provides, network element carries out the transport layer protocol negotiation through the mobile management signaling of expansion in the PMIPv6 system, when consulting successfully, utilizes transport layer protocol to carry out transfer of data; Therefore; Can in data transmission procedure, adopt the mechanism of stipulating in the transport layer protocol to guarantee reliability of data transmission, and, can also be according to the burst mechanism of stipulating in the transport layer protocol; The message that message length is surpassed the link layer preseting length carries out burst at transmitter side; The message of in routing procedure, being received according to the burst mechanism butt joint of stipulating in the transport layer protocol by router carries out fragment combination, and the message that sends is carried out burst, makes receiving terminal can correctly receive message; Improve safety of data transmission, improve the mobility performance of handoffs.
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, belong within the scope of claim of the present invention and equivalent technologies thereof if of the present invention these are revised with modification, then the present invention also is intended to comprise these changes and modification interior.
Claims (11)
1. a data transmission method is characterized in that, is applied to the proxy mobile IPv 6 system, and said method comprises:
First network element sends agreement request to second network element, carries the transport layer protocol type that first network element is supported in the said agreement request;
Second network element is selected the transport layer protocol type self supported from the transport layer protocol type that receives, and response message returns to first network element with the transport layer protocol type of selecting through consultation;
First network element and second network element carry out transfer of data through the corresponding transport layer protocol of selecting of transport layer protocol type;
First network element determines whether to need to continue to use the transport layer protocol and second network element to carry out transfer of data, and if not, then first network element sends to second network element and stops the transport layer protocol request;
If second network element is agreed to stop, then return to first network element and stop successfully to identify, and carry data with the Header option header option of first network element through IPv6 through stopping response message, carry out transfer of data;
If second network element disagrees with and stop, then return to first network element and stop the failure sign, and carry out transfer of data through the corresponding transport layer protocol of selecting of transport layer protocol type with first network element through stopping response message.
2. the method for claim 1 is characterized in that, said method also comprises:
If second network element is confirmed the format error of transport layer protocol type in agreement request that the transport layer protocol type that receives is not all supported or received, then response message will be consulted the failure sign and return to first network element through consultation;
First network element and second network element carry data through the Header option header option of IPv6, carry out transfer of data.
3. the method for claim 1 is characterized in that, first network element and second network element carry out transfer of data through transport layer protocol, comprising:
When first network element confirmed that the length of data to be transmitted surpasses specific length, the transport layer protocol corresponding according to the transport layer protocol type of selecting carried out burst to data, and data behind the burst are transferred to second network element according to transport layer protocol.
4. like the arbitrary described method of claim 1～3, it is characterized in that,
Said first network element is MAG or LMA, and said second network element is MAG or LMA.
5. the method for claim 1 is characterized in that,
Said agreement request with stop the transport layer protocol request and carry through the PBU message, said negotiate response message with stop response message and carry through the PBA message.
6. a data transmission system is characterized in that, is applied to the proxy mobile IPv 6 system, and said data transmission system comprises first network element and second network element, wherein:
Said first network element is used for sending agreement request and stopping the transport layer protocol request to second network element, carries the transport layer protocol type that first network element is supported in the said agreement request;
Said second network element; Be used for from the transport layer protocol type of transport layer protocol type selection self support that receives; Response message returns to first network element with the transport layer protocol type of selecting through consultation, and carries out transfer of data through the corresponding transport layer protocol and first network element of selecting of transport layer protocol type, and when agreeing to stop transport layer protocol; Return to first network element and stop successfully to identify through stopping response message; And carry data with the Header option header option of first network element through IPv6, and carry out transfer of data, disagreeing with when stopping transport layer protocol; Return to first network element and stop failure sign through stopping response message, and carry out transfer of data through the corresponding transport layer protocol of selecting of transport layer protocol type with first network element.
7. data transmission system as claimed in claim 6 is characterized in that,
Said second network element; During the format error of the transport layer protocol type that also is used for all not supporting or receive in agreement request in the transport layer protocol type of confirming to receive; Response message will be consulted the failure sign and return to first network element through consultation; And carry data with the Header option header option of first network element through IPv6, carry out transfer of data.
8. data transmission system as claimed in claim 6 is characterized in that,
Said first network element also is used for when the length of confirming data to be transmitted surpasses specific length, and the transport layer protocol corresponding according to the transport layer protocol type of selecting carries out burst to data, and data behind the burst are transferred to second network element according to transport layer protocol.
9. a network equipment is characterized in that, is applied to the proxy mobile IPv 6 system, and the said network equipment comprises:
The agreement request sending module is used for sending agreement request and stopping the transport layer protocol request to other network equipments, carries the transport layer protocol type of self supporting in the said agreement request;
The agreement request receiver module is used to receive the agreement request of other network equipments transmissions and stop the transport layer protocol request, and said agreement request is carried the transport layer protocol type that other network equipments are supported;
Consult Executive Module; Be used for from the transport layer protocol type of transport layer protocol type selection self support that receives; And response message returns to other network equipments with the transport layer protocol type of selecting through consultation, and when agreeing to stop transport layer protocol, returns to other network equipments and stops successfully to identify through stopping response message; When refusal stops transport layer protocol, return to other network equipments and stop failure sign through stopping response message;
Data transmission module; Be used for carrying out transfer of data through corresponding transport layer protocol and other network equipments of selecting of transport layer protocol type; And when consulting Executive Module and agree to stop transport layer protocol, the Header option header option through IPv6 carries data, carries out transfer of data with other network equipments; When negotiation Executive Module refusal stops transport layer protocol, carry out transfer of data through corresponding transport layer protocol and other network equipments of selecting of transport layer protocol type.
10. the network equipment as claimed in claim 9 is characterized in that,
Said negotiation Executive Module; During the format error of the transport layer protocol type that also is used for all not supporting or receive in the transport layer protocol type of confirming to receive in agreement request, response message will be consulted the failure sign and return to other network equipments through consultation;
Said data transmission module also is used for carrying data with the Header option header option of other network equipments through IPv6, carries out transfer of data.
11. the network equipment as claimed in claim 9 is characterized in that, the said network equipment also comprises
The burst module is used for when the length of confirming data to be transmitted surpasses specific length, and the transport layer protocol corresponding according to the transport layer protocol type of selecting carries out burst to data;
Said data transmission module also is used for transmitting the data behind the burst through the corresponding transport layer protocol of the transport layer protocol type of selecting and other network equipments.
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| CN102651777B (en) * | 2012-04-25 | 2015-03-11 | 华为技术有限公司 | Link establishing method and equipment |
| KR101869070B1 (en) | 2014-03-12 | 2018-07-19 | 엘지전자 주식회사 | Method and device for adjusting data transmission rate in wireless communication system |
| WO2015192288A1 (en) * | 2014-06-16 | 2015-12-23 | 华为技术有限公司 | Method, terminal and system for establishing communication connection |
| CN105704069B (en) * | 2014-11-26 | 2020-02-14 | 中兴通讯股份有限公司 | Method and device for saving processing resources in network element |
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