CN102624759A - Method for realizing data migration in session and node - Google Patents
Method for realizing data migration in session and node Download PDFInfo
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- H—ELECTRICITY
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- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/10—Protocols in which an application is distributed across nodes in the network
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- H—ELECTRICITY
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- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/1066—Session management
- H04L65/1083—In-session procedures
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
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Abstract
The invention provides a method for realizing data migration in a session and a node. When the data migration is generated and the session does not end, an original node notifies a new node of a session state of a terminal and the original node reserves the service control of the terminal. The new node forwards a subsequent message of the terminal to the original node according to the session state. The original node or the new node updates the session state when the session ends. By using the technical scheme of the invention, influence of the data migration on the session can be avoided.
Description
Technical field
The present invention relates to communication field, especially relate to the method and the node of data migration in a kind of P2P network.
Background technology
P2P is the abbreviation of English Peer-to-Peer, in be translated into the equity interconnected or P-2-P technology.At present P2P has fully demonstrated its powerful technical advantage at aspects such as exchange files, Distributed Calculation, service sharing, but the application of P2P mainly still concentrates on during Internet uses, large-scale application not as yet in conventional telecommunication network.Consider at present and in the future in the communication network; The main flow of session control is SIP (conversation initialization) agreement, therefore, the P2P technology is incorporated in the telecommunications network goes; Must be able to guarantee the application of Session Initiation Protocol in the P2P network, need simultaneously to move all kinds of typical services.
Based on above consideration, a lot of mechanisms of industry all are being devoted to study how the P2P technology is incorporated into communication network at present, and Fig. 1 is a kind of P2P core net configuration diagram that obtains most researchers and research institution's approval in the existing research, wherein:
101 expression P2P overlay networks, the logical network that it is made up of all kinds of peer-to-peers (being also referred to as node among the present invention) of undertaking different role;
The 102nd, the peer node in the P2P overlay network is the element in the P2P overlay network, is to give the node that other node provides storage and transmission to serve in the same P2P overlay network;
103 right and wrong P2P terminal equipments are not supported any P2P agreement for what be linked into the P2P overlay network, only support the terminal equipment of Session Initiation Protocol;
The 104th, the P2P terminal equipment for being linked into the both supports P2P agreement in the P2P overlay network, is also supported the terminal equipment of IP agreement; The ability of considering general terminal equipment, particularly hand-held terminal device a little less than, so the actual deployment under a lot of situation, the P2P terminal equipment also is linked into the P2P overlay network as just the P2P client, does not bear servers such as storage, transmission;
105 is the access node of terminal equipments such as S103, S104; Consider the needs of telecommunications operation; Comprise that P2P terminal and non-P2P terminal all must be linked in the P2P overlay network through access node nearby; When this access node during as the access node at non-P2P terminal, simultaneously as agent node, the Session Initiation Protocol of being responsible for non-P2P terminal is adopted and the conversion of P2P overlay network inside route agreement that SIP adopts; And, only need carry out relaying to message when this node during as the access node at P2P terminal.
Fig. 2 is the business process map that a new peer node joins overlay network, adds ingress among the figure and refers to the node of preparing new adding stacking network, and the access node is current resource responsible node, and registered nodes mainly is responsible for the Node ID of distribution node.When adding ingress and join stacking network first, at first it obtains its configuration data through http protocol to registered nodes, like the Node-ID that network distributes for its, certificate and relevant adjacent node routing table information.Adding follow-up the transmission to its access node according to the adjacent node routing table of ingress joins request; Different DHT algorithms, the mode of then calculating the access node is different, with; The present invention is an example with the Chord algorithm, and the access node is Node-ID next jumping in the Chord ring that adds ingress.The access node receives that adding ingress joins request, the Resource ID that is stored less than the resource migration that adds ingress to adding ingress, and notify adjacent node resource in its adjacency list new node of having moved.Concrete steps comprise as follows:
Add the Overlay stacking network first 201. add ingress, add ingress and send Attach Request message through http protocol registered nodes in network, mark adds IP addresses of nodes in the message;
202. registered nodes is to add the Node-ID that ingress distributes one 128 bit space; Return and adhere to response message to adding ingress; Bootstrap node address tabulation in the message in the mark Overlay network, wherein Bootstrap is mainly and adds the entry address that ingress provides the Overlay network;
Send join request message through the Overlay network to the access node 203. add ingress, when adding ingress and add network first, trigger the Attach flow process, find the access node through Bootstrap;
204. the access node allows node to insert, and returns the response message that joins request;
205. the access node sends the storage data request information to adding ingress; The data that message marking is responsible for according to DHT algorithm needs new node; With the Chord algorithm is example, the access node the Resource ID that is stored less than the resource migration that adds ingress to adding ingress;
Obtain successfully back echo reply message to the access node 206. add ingress;
207-208. the access node sends the routing table update request message to its adjacent node, notifies adjacent node indexed resource in its adjacency list new node of having moved.
Fig. 3 is that sip terminal is linked into the flow process of coming and making a call in the P2P stacking network through agent node.Specifically comprise the steps:
301.SIP the SIP session invitation message is sent to the agent node of P2P stacking network in terminal 1, caller public user identity sign PUI and destination address information or number information in the message;
302. carrying out Hash according to the DHT algorithm to caller PUI in the message, agent node generates ResourceID; And as destination address; At the responsible node of Overlay network through the protocol addressed caller sip terminal 1 of RELOAD; Searching finishes, and may connect through the IP that RELOAD agreement Attach process is set up between agent node and the responsible node, and is uploaded to the SIP operation layer of agent node to the IP address information of responsible node;
303. agent node SIP operation layer according to the responsible node IP address information that 302 steps are obtained, sends the SIP session invitation message to responsible node;
304. responsible node sends to peer node to the session of receiving; Responsible node possibly find peer node through the RELOAD layer according to the DHT algorithm before transmission, and the IP between setting up connects; Obtain peer IP address information, and pass to the SIP operation layer of responsible node;
305. responsible node SIP operation layer according to the peer node IP address information that 304 steps are obtained, sends the SIP session invitation message to peer node;
306-307. peer node is accepted current session, original route returns the 200OK response message;
What Fig. 4 described is in the conversation procedure, and P2P network occurrence node adds, and causes the scene of data migration.
401.SIP session is being set up through P2P network and peer node in the terminal;
402. newly added node sends the message that joins request to origin node;
403. according to prior art, origin node can be carried out data migration process, moves to new node to relevant data.Transition process is described with Fig. 2
In conversation procedure, initiate the data migration; Because conversation procedure Central Plains service node produces some temporary variables relevant with session in conversation procedure and dynamic data possibly not back up through the RELOAD layer; When data are moved to newly added node; May make losing of these data, finally have influence on the session of setting up in the data migration process with communication.
Summary of the invention
The technical problem that the present invention will solve is; Data migration method and node in a kind of P2P BlueDrama process are provided; Just make that the session service control in conversation procedure still is retained in origin node,, thereby avoid the influence of data migration session up to conversation end.
The present invention provides a kind of method that realizes data migration in the session.The session status at origin node notice new node terminal, origin node keeps the control of business at terminal; New node is transmitted the subsequent message at terminal and is given origin node according to session status; Origin node or new node upgrade session status when conversation end.
Further, origin node is when receiving the terminal session invitation message, and perhaps, origin node is being received the message that joins request of new node, and perhaps origin node is when request message is left in the new node transmission, and origin node is notified the session status at the said terminal of new node.
Further, session status comprises: the address information of origin node and/or terminal session status indication information.Wherein, address information refers to the IP address information or the node identification Node-ID of origin node.
Further; New point is according to session status, and transmit the subsequent message at terminal and specifically refer to for origin node: new node is received the subsequent message at terminal, according to the terminal session status indication information; The session of judging the terminal is in when data are moved in foundation or the communication; And do not finish as yet,, transmit the terminal subsequent message and give institute's origin node then according to the address information of the initial point in the session status.
Perhaps, after new node is received session status, think that then the session at terminal is in foundation or the communication when data are moved, and finish as yet; Receive the subsequent message at terminal when said new node after,, transmit the terminal subsequent message and give origin node according to the address information of the origin node in the session status.
Further, origin node notifies the session status at the said terminal of said new node to comprise: origin node is the mark session status in the business datum at terminal, moves to new node with business datum.
Further, find do not have the mark session status in the terminal traffic data, then be not transmitted to origin node to the subsequent message at terminal when new node.
Further, origin node or new node upgrade session status and comprise when conversation end: when origin node was received the release message of opposite end at terminal or terminal, origin node discharged said session, and the notice new node upgrades session status; Perhaps, origin node discharges said session when timer T1 is overtime, and the notice new node upgrades session status; Perhaps, new node upgrades session status when timer T2 is overtime.
Further, timer T1 is set up in session by origin node and is provided with when perhaps data shift, and the T1 duration is formulated by carrier policy.Timer T2 is receiving that by new node data when migration be provided with, and said T2 duration is formulated by carrier policy, perhaps, by the origin node setting and be marked in the business datum at terminal, moves to new node with business datum.
The present invention also provides a kind of node of realizing data migration in the session.The session status at this node notice new node terminal, this node keeps the control of business at terminal; This node is transmitted the subsequent message at the terminal of coming according to new node, continues the session of processing terminal; This node upgrades session status when conversation end, perhaps notify new node to upgrade session status.
Further, this node is when receiving the terminal session invitation message, and perhaps, node is being received the message that joins request of new node, and perhaps node is when request message is left in the new node transmission, and this node is notified the session status at new node terminal.
Further, the session status at this node notice new node terminal can be the said session status of mark in the business datum at terminal, moves to said new node with business datum.
Further, this node upgrades session status when conversation end, perhaps notifies new node to upgrade session status can be: when this node was received the release message of opposite end at terminal or terminal, node discharged said session, and the notice new node upgrades session status; Perhaps, node discharges session when timer T1 is overtime, and the notice new node upgrades said session status.
The present invention also provides a kind of node of realizing data migration in the session.After this node is received the session status at the terminal that origin node is notified,, transmit the subsequent message at terminal and give origin node, and when conversation end, upgrade session status according to session status.
Further, this node is according to session status, and transmit the subsequent message at terminal and specifically refer to for origin node: this node is received the subsequent message at terminal, transmits the terminal subsequent message according to the origin node address information in the session status and gives said origin node.
Further, this node upgrades session status and comprises when conversation end: this node perhaps when timer T2 is overtime, upgrades said session status when receiving that said origin node is notified.
Through data migration method and the node in the P2P BlueDrama process provided by the invention, just make that the session service control in conversation procedure still is retained in origin node, up to conversation end, thereby avoid the influence of data migration to session.
Description of drawings
Fig. 1 is a P2P core network system configuration diagram
Fig. 2 joins the business process map of P2P overlay network for new peer node in the prior art
Fig. 3 is linked in the P2P stacking network and the flow chart that makes a call for sip terminal in the prior art
Fig. 4 is the flow chart of data migration in the prior art
Fig. 5 adds fashionable flow chart for embodiment of the invention new node
Flow chart when Fig. 6 withdraws from for embodiment of the invention origin node
Fig. 7 is embodiment of the invention new node is handled forwards to origin node a flow chart
Fig. 8 is the process chart behind the embodiment of the invention T2 timer expiry
Fig. 9 is the process chart behind the embodiment of the invention T1 timer expiry
Embodiment
Through several embodiment, the present invention is described in further detail below.
Fig. 5 is the embodiment of the invention one; Just in session foundation or communication process, new node adds, former responsible sip terminal service node for scene P2P network sip terminal of describing and opposite end; Be that origin node is moved to new node to the business datum at said terminal; Origin node continues to keep the session control at said terminal, and up to conversation end, its idiographic flow explanation is as follows:
502. origin node when receiving that sip terminal 1 is set up session, is notified the session status at new node terminal.
The method of notice can be that origin node adds session status to sip terminal business datum district, and through the data migration, this session status is moved to new node in the lump.
Session status comprises the address information of origin node.Can also comprise the session status indication information in addition.
Address information can be the Node-ID of origin node, or the IP address information of origin node.The session status indication information is set to the Semi-Active state, representes that session does not finish.
When new node judges whether to exist session status, perhaps, judge according to the session status indication information whether the session at terminal is in foundation or the communication when data are moved, and finish as yet.
For example, origin node and new node adopt session status to comprise that address information adds the method for session status indication information.Then origin node notifies session status to behind the new node, and new node is in to set up in the perhaps communication when judging that according to the session status indication information drawing data moves and finishes as yet, then the subsequent message at terminal is given to origin node.
Again for example, origin node and new node adopt session status only to comprise the method for address information.Then origin node notifies session status to behind the new node, and new node is received that session status is then thought and is necessary that the subsequent message with the terminal is given to origin node.
In addition, session status can also comprise by origin node the T1 timer is set that timer duration is by the operation policy development.Session status can also comprise by origin node or new node the T2 timer is set.T1 and T2 timer are used to indicate new node behind timer expiry, remove or revise session status to be designated as the Idle state.
It should be noted that 502 steps also can occur in after 503 steps or 504 steps or 505 steps, this patent does not limit here.If the notification procedure of 502 steps is employed in the method that session status is added in the data field, then 502 steps were accomplished before 505 steps and are got final product.
503. new node joins the P2P overlay network, sends the message that joins request to origin node.
504. origin node allows new node to add, to new node echo reply message;
505. origin node is carried out data migration process, detailed step is referring to Fig. 2 flow process;
506. origin node preserving sessions status indication information is the control of business of Semi-Active session;
507a-507b. origin node receives that sip terminal 1 discharges and the release message of opposite end call release, the origin node call release;
508. renewal session status.
If comprised the session status indication information in the session status, then removing or revise the session status indication information to new node is the Idle state.Can be through the order of the Store in the RELOAD agreement, destination address is the Resource ID of sip terminal 1.
If do not comprise the session status indication information in the session status, then upgrade session status, as through the deletion address information, make new node no longer the subsequent message at terminal is forwarded to origin node.
Fig. 6 is the embodiment of the invention two; Scene P2P network sip terminal of describing and peer node are just in session foundation or communication process; The origin node gracefulness withdraws from, and former responsible sip terminal service node is moved to new node to the business datum at said terminal, and origin node continues to keep the session control at said terminal; Up to conversation end, its idiographic flow explanation is as follows:
The same 501-502 of 601-602, and Notification Method, session status is content-defined etc. also all with identical described in Fig. 5 embodiment.
603. origin node prepares to withdraw from the P2P network, origin node is to being about to replace its new node transmission to withdraw from request message;
604. new node is received the request message that withdraws from of origin node, returns to responsible node and withdraws from the acknowledges requests response message;
605. origin node is carried out data migration process;
The same 506-507 of 606-607;
608 with 508.
When all sessions all finished in the origin node, origin node just really withdrawed from the P2P network;
Fig. 7 is the embodiment of the invention three; Scene P2P network sip terminal of describing and peer node are just in session foundation or communication process; After the migration of new node data finishes, receive the message that perhaps mails to sip terminal 1 from the message of sip terminal 1, new node is according to session status; Handle forwards to origin node, concrete steps comprise as follows:
702. new node receives that the network intermediate node is from a sip terminal 1 or a sip message to sip terminal 1.
703. new node according to session status, carries out 704 steps.
If origin node adds session status to sip terminal business datum district, and through the data migration, this session status is moved to new node in the lump, then in 703 steps, new node carried out for 704 steps according to the session status in sip terminal 1 business datum.
The concrete mode of judging according to session status identical with described in Fig. 5 embodiment.
704. new node is given origin node the forwards of receiving.
Just in session foundation or communication process, after the migration of new node data finished, when the T2 timer expiry, new node upgraded session status for scene P2P network sip terminal that Fig. 8 describes and peer node, and concrete steps comprise as follows:
801. with 701.
802. new node is judged the T2 timer expiry, upgrades session status.Concrete grammar can be that new node is revised as Idle to the current sessions status indication information through the order of the Store in the RELOAD agreement, perhaps removes session status.
The T2 timer is set up when receiving the data migration by new node, and the T2 timer duration is formulated by carrier policy or informed that by origin node informing method can be:
The T2 timer duration is formulated by origin node, leaves in the business datum of sip terminal 1, when data are moved, moves to new node from origin node.
Scene P2P network sip terminal that Fig. 9 describes and peer node are just in session foundation or communication process; After the migration of new node data finishes, when the T1 timer expiry, the origin node call release; And remove or change the session status indication, concrete steps comprise as follows:
901. with 801.
902. origin node is judged the T1 timer expiry.
903. origin node discharges the session of sip terminal 1.
904. the notice new node upgrades session status.
Can be, the session status indication is removed or revised to the notice new node, and concrete grammar can be revised as the indication of current sessions state Idle or remove session status through the order of the Store in the RELOAD agreement by new node.
The T1 timer, is set up when perhaps data shift when session is set up by origin node, and the T1 timer duration is formulated by carrier policy.
The present invention also provides the node of data migration in a kind of session.When this node is origin node, have following characteristic:
The session status at this node notice new node terminal, this node keeps the control of business at said terminal; This node is transmitted the subsequent message at the terminal of coming according to new node, continues the session of processing terminal; This node upgrades session status when conversation end, perhaps notify new node to upgrade session status.Wherein identical among the definition of session status and the preceding method embodiment.
Special, this node perhaps, is being received the message that joins request of new node when receiving the terminal session invitation message, and perhaps this node is when request message is left in the new node transmission, and this node is notified the session status at the said terminal of new node.
Special, the method for this node notice new node session status can be a mark session status in the business datum at said terminal, moves to new node with business datum.
This node upgrades session status when conversation end; Perhaps notify new node to upgrade session status can be: when this node is received the release message of opposite end at said terminal or said terminal; Discharge said session, and notify said new node to upgrade said session status.Perhaps, this node discharges said session when timer T1 is overtime, notifies said new node to upgrade said session status.Wherein identical among the definition of timer T1 and the preceding method embodiment.
In addition, when this node is new node, have following characteristic:
After this node is received the session status at the terminal that origin node is notified,, transmit the subsequent message at terminal and give origin node, and when conversation end, upgrade session status according to session status.
Wherein, Said node is received the subsequent message at said terminal, according to session status, judges that the session at said terminal is in foundation or the communication when data are moved; And do not finish as yet, then transmit said terminal subsequent message and give origin node according to the origin node address information in the session status.
This node is notified according to origin node, perhaps when timer T2 is overtime, upgrades said session status.
Certainly; The present invention also can have other various embodiments; Under the situation that does not deviate from spirit of the present invention and essence thereof; Those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.
Claims (16)
1. method that realizes the migration of data in the session is characterized in that:
The session status at origin node notice new node terminal, said origin node keeps the control of business at said terminal;
Said new node is transmitted the subsequent message at said terminal and is given said origin node according to said session status;
Said origin node or said new node upgrade said session status when conversation end.
2. the method for claim 1 is characterized in that,
Said origin node is when receiving said terminal session invitation message; Perhaps; Said origin node is being received the message that joins request of said new node, and when perhaps said origin node left request message to said new node transmission, said origin node was notified the session status at the said terminal of said new node.
3. the method for claim 1 is characterized in that, said session status comprises: the address information of said origin node and/or said terminal session status indication information;
Wherein, said address information refers to the IP address information or the node identification Node-ID of said origin node.
4. method as claimed in claim 3 is characterized in that, said new node is transmitted the subsequent message at said terminal and specifically referred to for said origin node according to said session status:
Said new node is received the subsequent message at said terminal; According to said terminal session status indication information; The session of judging said terminal is in when data are moved in foundation or the communication; And do not finish as yet,, transmit said terminal subsequent message and give said origin node then according to the address information of the said origin node in the said session status.
5. method as claimed in claim 3 is characterized in that, said new node is transmitted the subsequent message at said terminal and specifically referred to for said origin node according to said session status:
After said new node was received said session status, the session of then judging said terminal is in when data are moved set up in the perhaps communication, and finishes as yet; Receive the subsequent message at terminal when said new node after,, transmit said terminal subsequent message and give said origin node according to the address information of the said origin node in the said session status.
6. the method for claim 1 is characterized in that, origin node notifies the session status at the said terminal of said new node to comprise:
Said origin node is the said session status of mark in the business datum at said terminal, moves to said new node with business datum.
7. method as claimed in claim 6 is characterized in that,
Whether said new node is judged in the said terminal traffic data and if having, then to be transmitted to said origin node to the subsequent message at said terminal by underlined said session status.
8. the method for claim 1 is characterized in that, said origin node or said new node upgrade said session status and comprise when conversation end:
When said origin node was received the release message of opposite end at said terminal or said terminal, said origin node discharged said session, notifies said new node to upgrade said session status; Perhaps,
Said origin node discharges said session when timer T1 is overtime, notify said new node to upgrade said session status; Perhaps,
Said new node upgrades said session status when timer T2 is overtime.
9. method as claimed in claim 8 is characterized in that, said timer T1 is set up in session by said origin node and is provided with when perhaps data shift, and said T1 duration is formulated by carrier policy;
Said timer T2 is receiving that by said new node data when migration be provided with, and said T2 duration is formulated by carrier policy, perhaps, by said origin node setting and be marked in the business datum at said terminal, moves to said new node with business datum.
10. a node of realizing data migration in the session is characterized in that,
The session status at node notice new node terminal, said node keeps the control of business at said terminal;
Said node is transmitted the subsequent message at the said terminal of coming according to said new node, continues to handle the session at said terminal;
Said node upgrades said session status when conversation end, perhaps notify said new node to upgrade said session status.
11. node as claimed in claim 10; It is characterized in that; Said node is when receiving said terminal session invitation message, and perhaps, said node is being received the message that joins request of said new node; When perhaps said node left request message to said new node transmission, said node was notified the session status at the said terminal of said new node.
12. node as claimed in claim 10 is characterized in that, said node notifies the session status at the said terminal of said new node specifically to refer to:
Said node is the said session status of mark in the business datum at said terminal, moves to said new node with business datum.
13. node as claimed in claim 10 is characterized in that, said node upgrades said session status when conversation end, perhaps notifies said new node to upgrade said session status and specifically refers to:
When said node was received the release message of opposite end at said terminal or said terminal, said node discharged said session, notifies said new node to upgrade said session status; Perhaps,
Said node discharges said session when timer T1 is overtime, notify said new node to upgrade said session status.
14. a node of realizing data migration in the session is characterized in that,
After node is received the session status at the terminal that origin node is notified,, transmit the subsequent message at said terminal and give said origin node, and when conversation end, upgrade said session status according to said session status.
15. node as claimed in claim 14 is characterized in that, said node is transmitted the subsequent message at said terminal and is specifically referred to for said origin node according to said session status:
Said node is received the subsequent message at said terminal, transmits said terminal subsequent message according to the origin node address information in the said session status and gives said origin node.
16. node as claimed in claim 14 is characterized in that, said node upgrades said session status and comprises when conversation end:
Said node perhaps when timer T2 is overtime, upgrades said session status when receiving that said origin node is notified.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110032173.8A CN102624759B (en) | 2011-01-28 | 2011-01-28 | A kind of method and node for realizing Data Migration in session |
| PCT/CN2011/080709 WO2012100560A1 (en) | 2011-01-28 | 2011-10-12 | Method and nodes for implementing data migration in session |
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| CN201110032173.8A CN102624759B (en) | 2011-01-28 | 2011-01-28 | A kind of method and node for realizing Data Migration in session |
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| CN102624759B CN102624759B (en) | 2017-03-29 |
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| CN103488499A (en) * | 2013-09-05 | 2014-01-01 | 华为数字技术（成都）有限公司 | Remote procedure calling method and remote procedure calling device |
| CN109445718A (en) * | 2018-11-16 | 2019-03-08 | 广东小天才科技有限公司 | A kind of method for writing data and system based on Data Migration |
| CN109729096A (en) * | 2016-01-05 | 2019-05-07 | 华为技术有限公司 | Method of mobile communication, device and equipment |
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| CN103488499A (en) * | 2013-09-05 | 2014-01-01 | 华为数字技术（成都）有限公司 | Remote procedure calling method and remote procedure calling device |
| CN109729096A (en) * | 2016-01-05 | 2019-05-07 | 华为技术有限公司 | Method of mobile communication, device and equipment |
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| CN109996350A (en) * | 2018-01-03 | 2019-07-09 | 大唐移动通信设备有限公司 | Conversation modes optimization method and device in a kind of 5G system |
| CN109445718A (en) * | 2018-11-16 | 2019-03-08 | 广东小天才科技有限公司 | A kind of method for writing data and system based on Data Migration |
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| Publication number | Publication date |
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| WO2012100560A1 (en) | 2012-08-02 |
| CN102624759B (en) | 2017-03-29 |
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