CN102025605A - Data transmission method and system thereof - Google Patents
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- CN102025605A CN102025605A CN 200910178102 CN200910178102A CN102025605A CN 102025605 A CN102025605 A CN 102025605A CN 200910178102 CN200910178102 CN 200910178102 CN 200910178102 A CN200910178102 A CN 200910178102A CN 102025605 A CN102025605 A CN 102025605A
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
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Abstract
The invention discloses a data transmission method, which is applied in network with separated identity identification and positioning identification. The data transmission method comprises the following steps: a source access support node (ASN) receives a source data packet sent by a source terminal, then adds an extension header for the source data packet so as to package the source data packet into an extension data packet; a field is set in the extension data packet to record the sequence number of the source data packet; and the source ASN sends the extension data packet to a destination ASN by a backbone network. In the invention, the source ASN packages sequence number information in a generic routing encapsulation (GRE) header so as to show a time sequence of the data packet received by the destination ASN; and the destination ASN can judge whether a disordered sequence occurs on a transmission path according to the sequence number, if so, the destination ASN can perfrom sequencing processing according to the increasing characteristic of the sequence number, eliminate the disordered sequence occurring on the transmission path and guarantee that the sequence of messages sent to a destination terminal is consistent to that of messages of the source terminal, therefore, the transmission quality is improved.
Description
Technical field
The present invention relates to Internet technical field, relate in particular to a kind of data transmission method and system.
Background technology
At present, the IP address has dual-use function in the widely used TCP/IP in internet (transmission control protocol/internet interconnection protocol) agreement, both as the station location marker of communication terminal host network interface in network topology of network layer, again as the identify label of transport layer host network interface.Do not consider the situation that main frame moves at the beginning of the ICP/IP protocol design.But when main frame moved more and more generally, the semanteme overload defective of this IP address was obvious day by day.When the IP address of main frame changed, not only route will change, and the identify label of communication terminal main frame also changes, and can cause routing overhead more and more heavier like this, and the variation of host identification can cause using and the interruption that is connected.
Purpose that identify label separates with station location marker proposed be to solve the semanteme overload of IP address and routing overhead seriously and problem such as fail safe, the dual-use function of IP address is separated, realize the support that the problems such as exchanging visit between the heterogeneous networks zone in routing overhead and the Next Generation Internet are dynamically heavily distributed, alleviated in mobility, many locals property, IP address.
In identify label and network that station location marker separates, initial message for terminal data, do not preserve the identify label of this terminal and the map information of station location marker as yet owing to insert support node (ASN), therefore, ASN transmits user's initial text delivery to the mapping Forwarding plane, the mapping Forwarding plane is searched user's RID, initial message is sent to the broad sense Forwarding plane, the identify label of ASN learning terminal and the map information of station location marker, after learning map information, follow-up message is forwarded to the broad sense Forwarding plane, it is before different with terminal message forwarding path afterwards that this has just caused ASN to learn map information, can bring the problem of packet out-ordering.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of data transmission method and system, solve ASN and preserve the identify label of terminal and the map information front and back of station location marker, because message forwarding path difference, out of order problem takes place in the message that causes terminal to send, and realizes making the purpose terminal can access the message of arranging according to the sending order of source terminal.
For solving the problems of the technologies described above, a kind of data transmission method of the present invention is applied to comprise in identify label and the network that station location marker separates:
After source access support node (ASN) receives the source data packet of source terminal transmission,, be encapsulated as extended packet, a field is set in extension header, the sequence number of record source data packet for this source data packet increases extension header;
Source ASN sends to purpose ASN by backbone network with extended packet.
Further, extension header comprises: generic route encapsulation (GRE) packet header and transport protocol header, field are the sequence-number field in the GRE packet header.
Further, safeguarding on purpose ASN has the sequence of data packet variable, and the initial value of this sequence of data packet variable is: the homing sequence of source data packet number-weights;
After purpose ASN receives extended packet, the value of judgment data packet number variable adds the value of the sequence-number field of the extended packet whether result of weights equals to receive, if equal, the extended packet that receives of decapsulation then, the source data packet that decapsulation is obtained sends to the purpose terminal, and the value of sequence of data packet variable is updated to the value of sequence-number field.
Further, if the value of sequence of data packet variable adds the result of weights and is not equal to the value of the sequence-number field of the extended packet that receives, whether the value of then further judging sequence-number field is greater than the value of sequence of data packet variable, if, the extended packet that receives of buffer memory then, and write down the value of the sequence-number field of this extended packet, when the value of sequence of data packet variable is increased to the sequence number of last data bag of extended packet of institute's buffer memory, the extended packet of purpose ASN decapsulation buffer memory then, the source data packet that decapsulation is obtained sends to the purpose terminal, and the value of sequence of data packet variable is updated to the value of sequence-number field of the extended packet of buffer memory.
Further, if the value of the sequence-number field of the extended packet that receives is less than or equal to the value of sequence of data packet variable, then purpose ASN abandons this extended packet that receives.
Further, also comprise attribute field in GRE packet header, whether this attribute field is used for the identifier field effective;
When purpose ASN receives the invalid extended packet of sequence-number field, this extended packet of decapsulation, the source data packet that decapsulation is obtained sends to the purpose terminal, and the value of sequence of data packet variable is updated to the value of sequence-number field.
Further, a kind of data transmission system is applied to comprise in identify label and the network that station location marker separates: source ASN, source terminal and purpose ASN, wherein:
Source ASN is used for for this source data packet increases extension header, being encapsulated as extended packet after the source data packet that receives the source terminal transmission, a field is set, the sequence number of record source data packet in extension header; And extended packet is sent to purpose ASN by backbone network.
Further, extension header comprises: GRE packet header and transport protocol header, field are the sequence-number field in the GRE packet header.
Further, purpose ASN is used for service data packet number variable, and the initial value of this sequence of data packet variable is: the homing sequence of source data packet number-weights;
Purpose ASN, also be used for after receiving extended packet, the value of judgment data packet number variable adds the value of the sequence-number field of the extended packet whether result of weights equals to receive, if equal, the extended packet that receives of decapsulation then, the source data packet that decapsulation is obtained sends to the purpose terminal, and the value of sequence of data packet variable is updated to the value of sequence-number field.
Further, purpose ASN, also being used for value at the sequence of data packet variable adds when the result of weights is not equal to the value of sequence-number field of the extended packet that receives, whether the value of further judging sequence-number field is greater than the value of sequence of data packet variable, if, the extended packet that receives of buffer memory then, and write down the value of the sequence-number field of this extended packet, when the value of sequence of data packet variable is increased to the sequence number of last data bag of extended packet of institute's buffer memory, the extended packet of decapsulation buffer memory then, the source data packet that decapsulation is obtained sends to the purpose terminal, and the value of sequence of data packet variable is updated to the value of sequence-number field of the extended packet of buffer memory.
Further, purpose ASN also is used for abandoning the extended packet that this receives when the value of the sequence-number field of the extended packet that receives is less than or equal to the value of sequence of data packet variable.
Further, also comprise attribute field in GRE packet header, whether this attribute field is used for the identifier field effective;
Purpose ASN is used for when receiving the invalid extended packet of sequence-number field, this extended packet of decapsulation, and the source data packet that decapsulation is obtained sends to the purpose terminal, and the value of sequence of data packet variable is updated to the value of sequence-number field.
In sum, source ASN of the present invention encapsulates sequence number information in GRE (generic route encapsulation) encapsulation header, the sequential that shows the packet that purpose ASN receives, whether purpose ASN can take place out of order on transmission path according to the sequence number judgement, if take place out of order, what then purpose ASN can be according to sequence number increases progressively the characteristic processing of sorting, eliminate take place on the transmission path out of order, it is consistent with the message sequence of source terminal that assurance sends to the message sequence of purpose terminal, thereby improved transmission quality; And the packet after the present invention encapsulation can be on the IP backbone network normal route, the router on the backbone network need not to carry out any modification, data forwarding performance height, and encapsulation format is easy to expansion, is convenient to edition upgrading.
Description of drawings
The Organization Chart of the network that Fig. 1 separates with station location marker for identify label;
Fig. 2 is the Organization Chart of the network that separates with station location marker of another kind of identify label;
Fig. 3 is the flow chart of data transferring method of the present invention.
Embodiment
Figure 1 shows that a kind of framework of realizing the network that identify label separates with station location marker, this framework is divided into Access Network and backbone network with network.Access Network is positioned at the edge of backbone network, is used for being responsible for the access of all terminals.Backbone network is responsible for route and the forwarding by the inter-terminal data message of Access Network access.Access Network and backbone network do not have overlapping on topological relation.
Two kinds of sign types are arranged: insert sign (AID:Access Identifier) and Route Distinguisher (RID:Routing Identifier) in the network of this framework.Wherein, AID is the user identity identification of terminal, is used for the identity of marking terminal user (also abbreviating the user as), and network is AID of the unique distribution of each terminal use, uses at Access Network, remains constant in the moving process of terminal; RID is the station location marker for terminal distribution, uses at backbone network.
In this framework, the terminal of access network can be one or more in portable terminal, fixed terminal and the roam terminals, as mobile phone, landline telephone, computer and application server or the like.
In this framework, Access Network is used to terminal to be provided to two layers of (physical layer and link layer) access means, the physics access link between maintenance terminal and the ASN.Two layers of possible access means comprise: cellular mobile network technology (GSM/CDMA/TD-SCDMA/WCDMA/WiMAX/LTE), DSL, band optical fiber insert or WiFi inserts or the like.
Be divided into two planes during the backbone network networking of this framework: broad sense Forwarding plane and mapping Forwarding plane also comprise access service node (ASN:Access Service Node) and authentication center.
ASN is the boundary node of broad sense Forwarding plane, mapping Forwarding plane and Access Network, has the interface with Access Network, broad sense Forwarding plane and mapping Forwarding plane.Be used to terminal to provide access service, maintenance terminal to be connected with network, be terminal distribution RID, the RID to registration of mapping Forwarding plane and inquiry terminal safeguards the AID-RID map information, and the route and the forwarding that realize data message.
The broad sense Forwarding plane is mainly used in that to carry out routing and transmit with RID according to the RID in the data message be the data message of destination address, and the data routing forwarding behavior in the broad sense Forwarding plane is consistent with traditional IP.As shown in the figure, the main network element of broad sense Forwarding plane comprises generic router (CR:Common Router) and interconnect services node (ISN:Interconnect Service Node).
The mapping Forwarding plane is mainly used in the identity location map information (being the map information of AID-RID) of preserving terminal, handles registration and inquiry to terminal location, and route and forwarding are the data message of destination address with AID.As shown in the figure, the main network element of mapping Forwarding plane comprises identity location register/packet forward function (ILR/PTF:Identity Location Register/Packet Transfer Function).
Authentication center is used for minute book architecture network terminal use's attribute information such as class of subscriber, authentication information and user's grade of service etc., finishes access authentication and mandate to terminal, also can have billing function.Authentication center's support terminal and internetwork two-way authentication, can produce be used to authenticate, the user security information of integrity protection and encryption.
In another framework, ASN is independent of backbone network in the division of framework, is positioned at the boundary node of backbone network and Access Network, has the interface with Access Network and backbone network, as shown in Figure 2.Its actual function of finishing is the same with Fig. 1.
The source data packet that source ASN sends the source terminal that receives among the present invention adopts the GRE form to be encapsulated as extended packet, and by mapping Forwarding plane or broad sense Forwarding plane extended packet is sent to purpose ASN.GRE is a kind of generic encapsulation agreement, and its message format is as follows:
| Delivery?Header |
| GRE?Header |
| Payload?packet |
In the GRE form, with the packet of needs encapsulation and route as year packet (payload packet) only, to carry packet only and carry out the GRE encapsulation, that is, add a GRE packet header, become the GRE packet, again by another kind of outer layer protocol carrying and forwarding, that is, add the packet header of an outer layer protocol, be called host-host protocol (delivery protocol) in order to the outer layer protocol that carries the GRE packet.
In identify label and framework that station location marker separates, the packet that will be the address with the identify label is as the clean packet that carries, and as the address in the packet header of host-host protocol, encapsulation format is as follows with station location marker:
In RFC2890, stipulated and can in GRE agreement packet header, expand, therefore, at above-mentioned encapsulation format, added following extension header among the present invention:
By in extension header, carrying the order that optional Sequence Number (sequence number) field is come the specified data bag.Solve the out of order problem of user data package, to being described as follows of Sequence Number field:
When the S position was set, expression Sequence Number field was effective, 32 of Sequence Number fields account; When S was reset, expression Sequence Number field was invalid.
Below in conjunction with accompanying drawing specific implementation method of the present invention is described.
Figure 3 shows that the data transmission method of present embodiment, comprising:
301: after source ASN receives the source data packet of source terminal transmission,, comprising: GRE packet header for source data packet encapsulation extension header, GRE carries in packet header Sequence Number field, the sequence number of record source data packet, and add and transport protocol header be encapsulated as extended packet;
The value from 0 to (2 of Sequence Number field
32)-1; The value of the Sequence Number field of first packet is the homing sequence number of source data packet, can be taken as 0, and the value of the Sequence Number field of packet increases progressively the weights of system regulation according to the order of sequence thereafter, as 1 or 2 etc.
Also be packaged with attribute field S in GRE packet header, S is 1 o'clock, and the sequence number in the expression packet header is meaningful; Preferably under the scene, can not encapsulate sequence number at transmission quality in packet, at this moment, field S is 0, and the recipient need not to carry out out of order processing.
302: source ASN sends to purpose ASN by mapping Forwarding plane or broad sense Forwarding plane with extended packet;
303: after purpose ASN received extended packet, decapsulation GRE packet header judged according to Sequence Number field whether this packet is out of order packet, if then execution in step 304; Otherwise, execution in step 305;
The value of the value of the Sequence Number field that purpose ASN obtains decapsulation and the sequence of data packet variable himself safeguarded compares, if the value of the Sequence Number field of the packet that obtains of decapsulation is less than or equal to the value of the sequence of data packet number of its maintenance, then this packet is out of order packet.
The initial value of the sequence of data packet of purpose ASN self maintained number is (homing sequence of source data packet number)-weights, can be made as (2
32)-1.
304: purpose ASN abandons this extended packet;
305: purpose ASN judges whether the extended packet that receives is the alphabetic data bag, if then execution in step 306; Otherwise, execution in step 307;
Purpose ASN number adds the sequence of data packet of its preservation the weights of system's regulation, if the value of the Sequence Number field of the packet that the value after the weighted value equals to receive, then this packet is the alphabetic data bag, and perhaps as if the not set of S field, then this packet also is the alphabetic data bag; Otherwise, neither be out of order packet, be not the alphabetic data bag yet.
306: purpose ASN decapsulation extended packet, and the source data packet that decapsulation obtains sent to the purpose terminal, and the value of the sequence of data packet variable of its preservation is updated to the value of the Sequence Number field of the extended packet that receives;
307: the extended packet that purpose ASN buffer memory receives, and write down the value of the Sequence Number field of this packet, be increased to the sequence number of last data bag of extended packet of this buffer memory when the value of sequence of data packet that purpose ASN safeguards number after, this cached data packet of ASN decapsulation, the source data packet that decapsulation is obtained sends to the purpose terminal, and the value of the sequence of data packet variable safeguarded is updated to the value of Sequence Number field of the extended packet of buffer memory.
Simultaneously, ASN should keep a timer, the record buffer memory time, to the message of the buffer memory discard processing that wears out, avoids the too much buffer of the equipment that takies (buffer).
The present invention also provides a kind of data transmission system, is applied to comprise in identify label and the network that station location marker separates: source ASN, source terminal and purpose ASN, wherein:
Source ASN is used for for this source data packet increases extension header, being encapsulated as extended packet after the source data packet that receives the source terminal transmission, a field is set, the sequence number of record source data packet in extension header; And extended packet is sent to purpose ASN by backbone network.
Extension header comprises: GRE packet header and transport protocol header, field are the sequence-number field in the GRE packet header.
Purpose ASN is used for service data packet number variable, and the initial value of this sequence of data packet variable is: the homing sequence of source data packet number-weights; Also be used for after receiving extended packet, the value of judgment data packet number variable adds the value of the sequence-number field of the extended packet whether result of weights equals to receive, if equal, the extended packet that receives of decapsulation then, the source data packet that decapsulation is obtained sends to the purpose terminal, and the value of sequence of data packet variable is updated to the value of sequence-number field.
Purpose ASN, also being used for value at the sequence of data packet variable adds when the result of weights is not equal to the value of sequence-number field of the extended packet that receives, whether the value of further judging sequence-number field is greater than the value of sequence of data packet variable, if, the extended packet that receives of buffer memory then, and write down the value of the sequence-number field of this extended packet, when the value of sequence of data packet variable is increased to the sequence number of last data bag of extended packet of institute's buffer memory, the extended packet of decapsulation buffer memory then, the source data packet that decapsulation is obtained sends to the purpose terminal, and the value of sequence of data packet variable is updated to the value of sequence-number field of the extended packet of buffer memory.When the value of the sequence-number field of the extended packet that receives is less than or equal to the value of sequence of data packet variable, abandon the extended packet that this receives.
Also comprise attribute field in GRE packet header, whether this attribute field is used for the identifier field effective; Purpose ASN when receiving the invalid extended packet of sequence-number field, this extended packet of decapsulation, the source data packet that decapsulation is obtained sends to the purpose terminal, and the value of sequence of data packet variable is updated to the value of sequence-number field.
Other function of equipment in the system please refer to the detailed description of method content.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (12)
1. data transmission method is applied to comprise in identify label and the network that station location marker separates:
After source access support node (ASN) receives the source data packet of source terminal transmission,, be encapsulated as extended packet, a field is set in described extension header, write down the sequence number of described source data packet for this source data packet increases extension header;
Described source ASN sends to purpose ASN by backbone network with described extended packet.
2. the method for claim 1 is characterized in that, described extension header comprises: generic route encapsulation (GRE) packet header and transport protocol header, described field are the sequence-number field in the described GRE packet header.
3. method as claimed in claim 2 is characterized in that,
Safeguarding on described purpose ASN has the sequence of data packet variable, and the initial value of this sequence of data packet variable is: the homing sequence of source data packet number-weights;
After described purpose ASN receives described extended packet, the value of judgment data packet number variable adds the value of the sequence-number field of the extended packet whether result of weights equals to receive, if equal, the extended packet that receives of decapsulation then, the source data packet that decapsulation is obtained sends to the purpose terminal, and the value of sequence of data packet variable is updated to the value of sequence-number field.
4. method as claimed in claim 3 is characterized in that,
If the value of described sequence of data packet variable adds the result of weights and is not equal to the value of the sequence-number field of the extended packet that receives, whether the value of then further judging described sequence-number field is greater than the value of described sequence of data packet variable, if, the extended packet that receives of buffer memory then, and write down the value of the sequence-number field of this extended packet, when the value of sequence of data packet variable is increased to the sequence number of last data bag of extended packet of institute's buffer memory, the extended packet of purpose ASN decapsulation buffer memory then, the source data packet that decapsulation is obtained sends to the purpose terminal, and the value of sequence of data packet variable is updated to the value of sequence-number field of the extended packet of buffer memory.
5. method as claimed in claim 4 is characterized in that,
If the value of the sequence-number field of the described extended packet that receives is less than or equal to the value of described sequence of data packet variable, then described purpose ASN abandons the extended packet that this receives.
6. method as claimed in claim 2 is characterized in that,
Also comprise attribute field in described GRE packet header, whether this attribute field is used to identify described sequence-number field effective;
When described purpose ASN receives the invalid extended packet of described sequence-number field, this extended packet of decapsulation, the source data packet that decapsulation is obtained sends to the purpose terminal, and the value of sequence of data packet variable is updated to the value of sequence-number field.
7. data transmission system is applied to comprise in identify label and the network that station location marker separates: source ASN, source terminal and purpose ASN, wherein:
Described source ASN is used for for this source data packet increases extension header, being encapsulated as extended packet after the source data packet that receives described source terminal transmission, and a field is set in described extension header, writes down the sequence number of described source data packet; And described extended packet is sent to purpose ASN by backbone network.
8. system as claimed in claim 7 is characterized in that, described extension header comprises: GRE packet header and transport protocol header, described field are the sequence-number field in the described GRE packet header.
9. system as claimed in claim 8 is characterized in that,
Described purpose ASN is used for service data packet number variable, and the initial value of this sequence of data packet variable is: the homing sequence of source data packet number-weights;
Described purpose ASN, also be used for after receiving described extended packet, the value of judgment data packet number variable adds the value of the sequence-number field of the extended packet whether result of weights equals to receive, if equal, the extended packet that receives of decapsulation then, the source data packet that decapsulation is obtained sends to the purpose terminal, and the value of sequence of data packet variable is updated to the value of sequence-number field.
10. system as claimed in claim 9 is characterized in that,
Described purpose ASN, also being used for value at described sequence of data packet variable adds when the result of weights is not equal to the value of sequence-number field of the extended packet that receives, whether the value of further judging described sequence-number field is greater than the value of described sequence of data packet variable, if, the extended packet that receives of buffer memory then, and write down the value of the sequence-number field of this extended packet, when the value of sequence of data packet variable is increased to the sequence number of last data bag of extended packet of institute's buffer memory, the extended packet of decapsulation buffer memory then, the source data packet that decapsulation is obtained sends to the purpose terminal, and the value of sequence of data packet variable is updated to the value of sequence-number field of the extended packet of buffer memory.
11. system as claimed in claim 10 is characterized in that,
Described purpose ASN also is used for abandoning the extended packet that this receives when the value of the sequence-number field of the described extended packet that receives is less than or equal to the value of described sequence of data packet variable.
12. system as claimed in claim 8 is characterized in that,
Also comprise attribute field in described GRE packet header, whether this attribute field is used to identify described sequence-number field effective;
Described purpose ASN, be used for when receiving the invalid extended packet of described sequence-number field, this extended packet of decapsulation, the source data packet that decapsulation is obtained sends to the purpose terminal, and the value of sequence of data packet variable is updated to the value of sequence-number field.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910178102 CN102025605A (en) | 2009-09-23 | 2009-09-23 | Data transmission method and system thereof |
| PCT/CN2010/074075 WO2011035616A1 (en) | 2009-09-23 | 2010-06-18 | Method, system and apparatus for data transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910178102 CN102025605A (en) | 2009-09-23 | 2009-09-23 | Data transmission method and system thereof |
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| CN102025605A true CN102025605A (en) | 2011-04-20 |
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| CN 200910178102 Pending CN102025605A (en) | 2009-09-23 | 2009-09-23 | Data transmission method and system thereof |
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| WO (1) | WO2011035616A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106775437A (en) * | 2015-11-24 | 2017-05-31 | 阿里巴巴集团控股有限公司 | Method of data synchronization and device |
| CN107924610A (en) * | 2015-06-24 | 2018-04-17 | 大众汽车有限公司 | Method and apparatus for improving the security in Remote triggering, motor vehicle |
| CN110442392A (en) * | 2019-07-16 | 2019-11-12 | 新华三大数据技术有限公司 | A kind of packet partition method, device, electronic equipment and storage medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115298982B (en) * | 2020-04-09 | 2024-03-26 | 华为技术有限公司 | Multicast transmission method and related device |
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| KR100347417B1 (en) * | 1999-11-10 | 2002-08-03 | 주식회사 하이닉스반도체 | Call traffic statistics data compression transmission method of CDMA mobile communication system |
| CN100442755C (en) * | 2003-11-14 | 2008-12-10 | 华为技术有限公司 | Method for guaranteeing general route package channel transmission reliability |
| US7317707B2 (en) * | 2005-06-02 | 2008-01-08 | Lucent Technologies Inc. | Method for seamless session transfer of a mobile station |
| CN101179564B (en) * | 2007-08-10 | 2010-12-01 | 华中科技大学 | Link layer automatic request retransmission based TCP packet header compression method and system thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107924610A (en) * | 2015-06-24 | 2018-04-17 | 大众汽车有限公司 | Method and apparatus for improving the security in Remote triggering, motor vehicle |
| US10803680B2 (en) | 2015-06-24 | 2020-10-13 | Volkswagen Aktiengesellschaft | Method and apparatus for increasing safety for remote triggering, and motor vehicle |
| CN106775437A (en) * | 2015-11-24 | 2017-05-31 | 阿里巴巴集团控股有限公司 | Method of data synchronization and device |
| CN106775437B (en) * | 2015-11-24 | 2020-01-31 | 阿里巴巴集团控股有限公司 | Data synchronization method and device |
| CN110442392A (en) * | 2019-07-16 | 2019-11-12 | 新华三大数据技术有限公司 | A kind of packet partition method, device, electronic equipment and storage medium |
| CN110442392B (en) * | 2019-07-16 | 2022-08-09 | 新华三大数据技术有限公司 | Packet isolation method and device, electronic equipment and storage medium |
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| WO2011035616A1 (en) | 2011-03-31 |
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Application publication date: 20110420 |