CN101511042A - Data synchronization method and device - Google Patents
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Abstract
The invention provides a synchrodata method and a device thereof which relates to the light communication field. The method includes steps as follows: a first processing unit sends an increment data packet information to a second processing unit after detecting data change needing synchronization function block, the increment data packet information contains a first increment data packet and a first increment data packet sequence number corresponding to the increment data packet, and the first processing unit sends an increment data packet sequence number information containing the second increment data packet sequence number to a second processing unit periodically; the second processing unit sends the information requesting synchrodata to the first processing unit when at least one of two conditions occurs that the first increment data packet sequence number carried by the increment data packet received by the second processing unit and the third increment data packet sequence number kept by the second processing unit are discontinuously, or the second increment data packet sequence number received by the second processing unit is not equal to the third increment data packet sequence number kept by the second processing unit. The method can realize reliable synchrodata which increases operation stability and is simple to realize.
Description
Technical field
The present invention relates to the optical communication field, particularly a kind of method of synchrodata and device thereof.
Background technology
In optical transmission system, include some identical or similar functions but the processing unit of independent operating, certain or some functional block that is comprised between them is because some reason must keep the real-time reliable synchronization of data.Such as: the cross processing unit in the optical transmission communication system, in order to realize more jumbo intersection, a plurality of cross units adopt the mode that bit is cut apart to realize the associating intersection.Bit is cut apart and is meant by 8 bits being divided into the mode of 4 groups of two bits or 2 groups of four bits, with the business partition to 4 or 2 cross units.Joining together to realize professional intersection by 4 or 2 cross units, is to realize the professional a kind of mode of intersecting of big capacity.If the time slot configuration of any one cross unit and other cross units (interconnection of corresponding every business relation in the cross unit) is inconsistent in the cross unit in associating in this manner, will cause business to make mistakes or interrupt.For another example: in order to improve the network survivability ability; SDH (Synchronous Digital Hierarchy synchronous digital hierarchy) equipment provides the function of APS and recovery; equipment detects the alarm status of corresponding respective channel in real time; when alarm changes; by protection or recovery algorithms, select standby or available passage automatically.The transmission plane of optical-fiber network and control plane need realize that protection switches processing, and the measuring ability piece of an alarm is all arranged, and its alarm status also must keep in real time in full accord, handle inconsistent and cause business configuration to be made mistakes otherwise also may occur switching.
A kind of synchronous method of cross unit that realizes the associating intersection has been proposed in the prior art, adopt certain strategy to coordinate certain cross unit as the main crossings unit, (master-slave system: in order to realize certain function, must confirm a master unit system ability operate as normal, master unit is the forwards of this system and the core of data processing often, must could normally carry out by master unit from some processing of unit.For example, principal and subordinate's cross unit: the main crossings unit is the core of protection turning protocol and time slot configuration processing, is notified by the main crossings unit from the protection switch status and the time slot configuration of cross unit, keeps consistent with the main crossings unit.) come the hold mode unanimity by the main crossings unit to other cross units transmission configuration datas.But, may be in sending data procedures because of communication network unstable or unusual reason cause other cross units to can not receive the configuration data of variation, just may cause whole cross-over configuration to can not get forever synchronously.
Therefore, need a kind of reliable and stable method and guarantee configuration data strict conformance under the above-mentioned situation.
Summary of the invention
The purpose of the embodiment of the invention is to provide a kind of method and device thereof of synchrodata, to solve the asynchronous problem of data that takes place in data transmission and the receiving course.
The purpose of the embodiment of the invention solves by the following technical programs, and a kind of method of synchrodata comprises:
First processing unit sends incremental data bag message to second processing unit after detecting the data variation that needs the synchronizing function piece in real time, the first incremental data bag sequence number that comprises incremental data bag and incremental data bag correspondence in the described incremental data bag message, and first processing unit periodically sends the incremental data bag sequence number message that comprises the second incremental data bag sequence number to second processing unit, and the described second incremental data bag sequence number is the last first incremental data bag sequence number that sends of first processing unit;
Second processing unit receive the incremental data bag with the first incremental data bag sequence number and the unequal situation of the 3rd incremental data bag sequence number of second processing unit, the second incremental data bag sequence number that the 3rd incremental data bag sequence number is discontinuous or second processing unit receives of preserving and the preservation of second processing unit during at least a the appearance, then send the message of the synchronous full dose data of request to first processing unit, first processing unit is according to the full dose packet of the corresponding functional block of the message packing of the synchronous full dose data of request that receive and send to second processing unit of request.
Further, second processing unit disposes corresponding functional block according to the incremental data bag that receives after receiving incremental data bag message; Or
Dispose corresponding functional block according to the full dose packet that receives after receiving the full dose packet.
Further, after second processing unit receives the first incremental data bag sequence number that first processing unit sends, with the described first incremental data bag sequence number as the 3rd incremental data bag sequence number.
Further, every incremental data bag message of first processing unit makes the first incremental data bag sequence number increasing or decreasing.
Further, comprise the last first incremental data bag sequence number that sends in the full dose packet that described first processing unit sends.
Further, after described second processing unit receives the full dose packet of first processing unit transmission, the 3rd delta package sequence number of preserving is updated to the first incremental data bag sequence number that comprises in the described full dose packet.
Wherein, described first processing unit is meant the Main Processor Unit of the data permission with the synchronous functional block of the current need of issue, second processing unit be meant the data that receive the issue of first processing unit and dispose corresponding functional block from processing unit, second processing unit comprises one at least.
Wherein, the first incremental data bag sequence number is the numeral of arranging according to the increasing or decreasing rule.
The embodiment of the invention also provides a kind of device of synchrodata, comprising:
Incremental data bag message sending unit, send the incremental data bag message that comprises the first incremental data bag sequence number to other processing units after being used to detect the data variation that needs the synchronizing function piece, and every first incremental data bag makes the first incremental data bag sequence number increasing or decreasing;
Incremental data bag sequence number message sending unit, be used for periodically sending the incremental data bag sequence number message that comprises the second incremental data bag sequence number to other processing units, the described second incremental data bag sequence number is the last first incremental data bag sequence number that sends of first processing unit;
Full dose packet transmitting element, be used to receive after the message of the synchronous full dose data of request that other processing units send according to the full dose packet of the corresponding functional block of described message packing and send to the processing of request unit, comprise the last first incremental data bag sequence number that sends in the described full dose packet.
The embodiment of the invention also provides a kind of device of synchrodata, it is characterized in that, comprising:
Incremental data bag message sink unit, be used to receive the incremental data bag message that other processing units send, and whether the 3rd incremental data bag sequence number of first incremental data bag sequence number that relatively receives and the preservation of second processing unit is continuous, if discontinuous, then send the message of asking synchronous full dose data to described other processing units;
Incremental data bag sequence number message sink unit, be used to receive incremental data bag sequence number message, and whether the second incremental data bag sequence number that relatively receives equates with the 3rd incremental data bag sequence number that second processing unit is preserved, if unequal, then send the message of asking synchronous full dose data to other processing units;
Full dose packet receiving element after being used to receive the full dose packet of other processing units transmissions, is updated to the first incremental data bag sequence number that comprises in the described full dose packet with the 3rd delta package sequence number of preserving;
Wherein, also comprise the functional configuration unit in this device, be used for according to incremental data bag that receives or the corresponding functional block of full dose packet configuration.
Adopted the method for synchrodata provided by the invention and device solves thereof and needed between a plurality of unit the system that keeps data consistent data send and receiving course in the nonsynchronous problem of data that takes place; Particularly solved the data synchronization problems of the processing unit of optical transmission system, for example in the optical transmission master-slave system between a plurality of independent process unit the data of functional block in real time synchronously; Realized the reliable synchronization of data, improved service stability, and realized easy.
Description of drawings
Fig. 1 is the method flow diagram of the synchrodata that provides of the embodiment of the invention one;
Fig. 2 is the method flow diagram of the synchrodata that provides of the embodiment of the invention two;
Fig. 3 a and 3b are the method flow diagrams of the synchrodata that provides of the embodiment of the invention three;
Fig. 4 a and 4b are the apparatus structure schematic diagrames of the synchrodata that provides of the embodiment of the invention four.
Embodiment
The present invention is described in further detail below in conjunction with drawings and Examples.
The method of synchrodata of the present invention is to send and receive by the mode that will need data in synchronization to combine by increment and full dose, guarantees the correctness and the reliability of synchrodata when improving data synchronization efficiency, and realizes easy.
At first determine a Main Processor Unit and more than one from processing unit, Main Processor Unit detects state or the data variation that needs synchronous functional block in real time, for example protect the state of switch function or professional interleaving function or data variation (related data that the state or the data of functional block are called functional block), (be also referred to as the incremental data bag in case detect the packet that initiatively changes immediately after the related data variation to other processing units transmissions, promptly only comprise this delta data and do not comprise the not packet of delta data), the bag sequence number of wherein carrying this incremental data bag; Simultaneously, Main Processor Unit also periodically sends the bag sequence number of the packet of the last variation that sent to other processing units.
Other receive incremental data bag and incremental data bag sequence number from processing unit, and whether comparing data bag sequence number is continuous, and discontinuous then judgement has packet loss; Simultaneously, also receive the bag sequence number of the incremental data bag that the last time that Main Processor Unit periodically sends sent, and more whether equal the last time and receive incremental data bag sequence number, unequally judge that then packet loss is arranged from processing unit.If at above-mentioned any situation at least packet packet loss that judged, then send request full dose packet to Main Processor Unit from processing unit, Main Processor Unit receive the request back the current full dose packing data that needs synchronous functional block issue the request of transmission from processing unit.
Fig. 1 is the method flow diagram of the synchrodata that provides of the embodiment of the invention one, and the method comprising the steps of:
S110, Main Processor Unit detect the related data that needs the synchronizing function piece in real time and change the back to sending incremental data bag message from processing unit, and Main Processor Unit is periodically to send the last incremental data bag sequence number message that sent from processing unit;
Main Processor Unit can adopt following method to determine in an example of the present invention: all cross units of transmission system report the running status of self to the network element control plate, described network element control buttress is according to the state on the throne of cross unit, running status and groove bit number are determined the main crossings unit, for example select current on the throne and running status is no abnormal, the cross unit of groove bit number minimum is the main crossings unit, certainly can also determine according to other strategies of user preset, for example select current on the throne and running status is no abnormal, the cross unit of groove bit number maximum is the main crossings unit;
Main Processor Unit starts a special task and comes the related data of measuring ability piece to change, related data is meant the state of functional block or parameters that functional block comprised and data message etc., for example protect the related data of switch function to be meant: protection configuration attribute or parameter, the alarm and the K byte status of input, outer setting and control command, the switch status of agreement decision-making output and K byte status or the like, Main Processor Unit is in case discovery changes, and then the packet that the incremental data bag is just changed sends to respectively from processing unit with the form of incremental data bag message;
In addition, Main Processor Unit also starts a timer of 5 seconds, every 5 seconds just to the bag sequence number that sends the last incremental data bag that sent from processing unit with the form of incremental data bag sequence number message; Comprise the packet that the incremental data bag promptly changes in the incremental data bag message, also carry the bag sequence number of described incremental data bag simultaneously; The bag sequence number that comprises the incremental data bag in the incremental data bag sequence number message;
S120 resolves and judges the form of message of the synchrodata that receives from processing unit, if incremental data bag message then receives described incremental data bag and process ends from processing unit; If incremental data bag sequence number message then forwards step S130 to;
S130 judges from processing unit whether the incremental data bag sequence number receive equates with the last incremental data bag sequence number that receives, if equal, process ends then; If unequal, then think to have packet loss, and send the message of the synchronous full dose data of request to Main Processor Unit;
S140, Main Processor Unit according to the full dose packet of the corresponding functional block of the message packing of the synchronous full dose data of request that receive and send to request from processing unit;
After receiving incremental data bag message, processing unit can dispose corresponding functional block according to the incremental data that receives; Receive the full dose packet of Main Processor Unit transmission from processing unit after, can be according to the functional block of the full dose data configuration correspondence that receives.
As seen the method for using present embodiment to provide, it is that incremental data bag message or incremental data bag sequence number message are for further processing that processing unit is distinguished the message of receiving; If incremental data bag message, then receive and according to the corresponding functional block of incremental data configuration; Can think that then packet loss is arranged if incremental data bag sequence number message and the incremental data bag sequence number that receives with the last time are unequal, ask the full dose packet then, and according to the functional block of full dose data configuration correspondence.Therefore, not only realized the synchronous in real time of incremental data, even the unstable or unusual situation of communication network in the process that sends the incremental data bag, occurs, also can keep the strict conformance on the data by the mode of request full dose data, improved the reliability and stability of system, realized easy.
Fig. 2 is the method flow diagram of the synchrodata that provides of the embodiment of the invention two.This method comprises:
S210, Main Processor Unit detects the related data that needs the synchronizing function piece in real time, for example time slot configuration changes the back to send incremental data bag message from processing unit, comprise the packet that the incremental data bag promptly changes and the bag sequence number of described incremental data bag in the incremental data bag message, and every incremental data bag of Main Processor Unit makes incremental data bag sequence number add 1; Simultaneously Main Processor Unit is periodically to sending the last incremental data bag sequence number message that sent from processing unit, only comprises the bag sequence number of incremental data bag in the incremental data bag sequence number message and do not comprise incremental data bag itself;
S220 judges the form of message of the synchrodata receive from processing unit, if incremental data bag message then forwards step S240 to; If incremental data bag sequence number message then forwards step S230 to; If the full dose data packet message then forwards step S260 to, comprise the whole related datas that need the synchronizing function piece in the described full dose data packet message;
S230 judges from processing unit whether the incremental data bag sequence number receive equates with the last incremental data bag sequence number that receives, if equal then forward step S210 to; If unequal, then think to have packet loss, and send the message of the synchronous full dose data of request, and forward step S250 to Main Processor Unit;
S240 receives described incremental data bag and judges whether the incremental data bag sequence number receive is continuous with the last incremental data bag sequence number that receives from processing unit, if continuously then forward step S210 to; If discontinuous, then thinking has packet loss, sends the synchronous full dose data-message of request to Main Processor Unit, and forwards step S250 to.
S250, Main Processor Unit according to the full dose packet of the corresponding functional block of the message packing of the synchronous full dose data of request that receive and send to request from processing unit;
S260 is from the functional block of processing unit according to the full dose data configuration correspondence that receives.
Wherein, comprise the last incremental data bag sequence number that sends in the full dose packet that described Main Processor Unit sends, after then receiving the full dose packet of Main Processor Unit transmission from processing unit, the delta package sequence number that the last time is received is updated to the incremental data bag sequence number that comprises in the described full dose packet, is used for wrapping when receive packet next time the comparison of sequence number.
As seen the method for using present embodiment to provide by incremental data synchronously and the flexible strategy that combines of full dose data sync, has guaranteed the correctness and the reliability of synchrodata, and has realized easy in the raising data synchronization efficiency.
Fig. 3 a and Fig. 3 b are the method flow diagrams of the synchrodata that provides of the embodiment of the invention three, and this method adopts the synchronous intersection configuration status between the cross unit of associating intersection with optical transmission system be that example describes concrete step from the main crossings cell side with from the cross unit side respectively.At first to report self running status, network element control plate to select to the network element control plate current on the throne and running status is no abnormal, the cross unit of groove bit number minimum is the main crossings unit for all cross units, with other cross units as from cross unit.
The concrete treatment step of main crossings unit comprises:
S311: special task of main crossings unit starting detects the variation of time slot configuration, just time slot configuration data and packet sequence number packing formation incremental data bag message are sent to each from cross unit in case change the back, when sending out the packet that once changes incremental data bag just, the sequence number of incremental data bag increases progressively 1;
S312: timer of 5 seconds of main crossings unit starting, timing cycle to send incremental data bag sequence number message from cross unit, wherein comprise the last incremental data bag sequence number that sent to the back;
S313: after the message of request full dose cross time-slot configuration data bag is received in the main crossings unit, current all cross time-slot configuration datas and the last incremental data bag sequence number packing that sent are sent to from cross unit.
Start a special task from cross unit and receive the synchrodata message that the main crossings unit sends, concrete treatment step comprises:
S321: after in a single day receiving increment time slot configuration message from cross unit, time slot configuration is write corresponding time slot cross-over configuration chip, preserve the sequence number of the incremental data bag of receiving simultaneously, and more whether the sequence number of the incremental data bag of receiving with the last time is continuous, if it is discontinuous, then send the message of a request full dose cross time-slot configuration data bag to Main Processor Unit, otherwise, continue next step:
S322: in a single day receive the delta package sequence number message that the main crossings unit cycle sends from cross unit, judge that simultaneously whether this sequence number equates with the delta package sequence number that the last time receives, if it is unequal, need send the message of a request full dose cross time-slot configuration data bag to the main crossings unit, otherwise, continue next step:
S323: in a single day receive from cross unit the message of full dose cross time-slot configuration data the intersection data of receiving to be configured to cross chips, simultaneously, upgrade the last delta package sequence number of the receiving subsidiary delta package sequence number of full dose bag for this reason.
Sequencing on the execution of step S311, S312, S313 in this embodiment is not free does not disturb mutually; Sequencing on the execution of step S321, S322, S323 is also not free does not disturb mutually; And step S311, S312 are initiatively initiated by the main crossings unit, independent task each other, and step S313 is according to carrying out from the request that intersects; Step S321, S322, S323 are by carrying out according to the synchrodata form of message that the main crossings unit that receives sends from cross unit.
As seen, the method of using present embodiment to provide, in the Main Processor Unit side with from the processing unit side the flexible strategy that incremental data is synchronous and the full dose data sync combines is set respectively, when improving data synchronization efficiency, has guaranteed the correctness and the reliability of synchrodata, and realized easy.
Be divided into Main Processor Unit in the concrete steps of the above embodiment of the present invention and from the processing of processing unit, the Main Processor Unit here is meant the processing unit with the synchronous functional block data of the current need of issue.Be meant the processing unit of the data that receive the Main Processor Unit issue also according to the data configuration corresponding functional block that receives, to have one or more from processing unit from processing unit from processing unit.Definite protection scope of the present invention that do not influence of principal and subordinate's processing unit; method of the present invention can be applied to any need maintenance in the system of data consistent by the mode that sends message between a plurality of unit; set forth the interactive relation of data between data sync source and the data sync destination and defined master-slave system and Main Processor Unit and for clear, and be not intended to limit the scope of the invention from processing unit.
Fig. 4 a is the device that a kind of synchrodata is provided according to the embodiment of the invention four, and this device is positioned at the packet transmitter side, comprising:
Incremental data bag message sending unit, send the incremental data bag message that comprises the first incremental data bag sequence number to other processing units after being used to detect the data variation that needs the synchronizing function piece, and every first incremental data bag makes the first incremental data bag sequence number increasing or decreasing;
Incremental data bag sequence number message sending unit, be used for periodically sending the incremental data bag sequence number message that comprises the second incremental data bag sequence number to other processing units, the described second incremental data bag sequence number is the last first incremental data bag sequence number that sends of first processing unit;
Full dose packet transmitting element, be used to receive after the message of the synchronous full dose data of request that other processing units send according to the full dose packet of the corresponding functional block of described message packing and send to the processing of request unit, comprise the last first incremental data bag sequence number that sends in the described full dose packet.
Fig. 4 b is the device that a kind of synchrodata is provided according to the embodiment of the invention four, and this device is positioned at the packet receiver side, comprising:
Incremental data bag message sink unit, be used to receive the incremental data bag message that other processing units send, and whether the 3rd incremental data bag sequence number of first incremental data bag sequence number that relatively receives and the preservation of second processing unit is continuous, if discontinuous, then send the message of asking synchronous full dose data to described other processing units;
Incremental data bag sequence number message sink unit, be used to receive incremental data bag sequence number message, and whether the second incremental data bag sequence number that relatively receives equates with the 3rd incremental data bag sequence number that second processing unit is preserved, if unequal, then send the message of asking synchronous full dose data to other processing units;
Full dose packet receiving element after being used to receive the full dose packet of other processing units transmissions, is updated to the first incremental data bag sequence number that comprises in the described full dose packet with the 3rd delta package sequence number of preserving;
Wherein, also comprise the functional configuration unit in this device, be used for according to incremental data bag that receives or the corresponding functional block of full dose packet configuration.
Incremental data bag sequence number described in the embodiment of the invention is the numeral of arranging according to the increasing or decreasing rule, and it is used to indicate the identity of packet, and this sequence number is the natural number that increases progressively continuously in an example, promptly 1,2,3......; This sequence number is the integer that successively decreases in the another one example, promptly 100,98,96,94......; This sequence number is the timestamp that is accurate to millisecond in the another one example, and is definite according to own elapsed time clock by the Main Processor Unit that sends packet, promptly 12: 3: 56 12 milliseconds, 12: 3: 56 15 milliseconds, 12: 3: 56 25 milliseconds ....
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 (10)
1, a kind of method of synchrodata is characterized in that, comprising:
First processing unit sends incremental data bag message to second processing unit after detecting the data variation that needs the synchronizing function piece in real time, the first incremental data bag sequence number that comprises incremental data bag and incremental data bag correspondence in the described incremental data bag message, and first processing unit periodically sends the incremental data bag sequence number message that comprises the second incremental data bag sequence number to second processing unit, and the described second incremental data bag sequence number is the last first incremental data bag sequence number that sends of first processing unit;
Second processing unit receive the incremental data bag with the first incremental data bag sequence number and the unequal situation of the 3rd incremental data bag sequence number of second processing unit, the second incremental data bag sequence number that the 3rd incremental data bag sequence number is discontinuous or second processing unit receives of preserving and the preservation of second processing unit during at least a the appearance, then send the message of the synchronous full dose data of request to first processing unit, first processing unit is according to the full dose packet of the corresponding functional block of the message packing of the synchronous full dose data of request that receive and send to second processing unit of request.
2, method according to claim 1 is characterized in that, second processing unit disposes corresponding functional block according to the incremental data bag that receives after receiving incremental data bag message; Or
Dispose corresponding functional block according to the full dose packet that receives after receiving the full dose packet.
3, method according to claim 1 is characterized in that, after second processing unit receives the first incremental data bag sequence number that first processing unit sends, with the described first incremental data bag sequence number as the 3rd incremental data bag sequence number.
4, method according to claim 1 is characterized in that, every incremental data bag message of first processing unit makes the first incremental data bag sequence number increasing or decreasing.
5, method according to claim 1 is characterized in that, comprises the last first incremental data bag sequence number that sends in the full dose packet that first processing unit sends.
6, method according to claim 5, it is characterized in that, after described second processing unit receives the full dose packet of first processing unit transmission, the 3rd delta package sequence number of preserving is updated to the first incremental data bag sequence number that comprises in the described full dose packet.
7, according to the described method of aforementioned arbitrary claim, it is characterized in that, described first processing unit is meant the Main Processor Unit of the data permission with the synchronous functional block of the current need of issue, second processing unit be meant the data that receive the issue of first processing unit and dispose corresponding functional block from processing unit, second processing unit comprises one at least.
According to the described method of claim 1～6, it is characterized in that 8, the first incremental data bag sequence number is the numeral of arranging according to the increasing or decreasing rule.
9, a kind of device of synchrodata is characterized in that, comprising:
Incremental data bag message sending unit, send the incremental data bag message that comprises the first incremental data bag sequence number to other processing units after being used to detect the data variation that needs the synchronizing function piece, and every first incremental data bag makes the first incremental data bag sequence number increasing or decreasing;
Incremental data bag sequence number message sending unit, be used for periodically sending the incremental data bag sequence number message that comprises the second incremental data bag sequence number to other processing units, the described second incremental data bag sequence number is the last first incremental data bag sequence number that sends of first processing unit;
Full dose packet transmitting element, be used to receive after the message of the synchronous full dose data of request that other processing units send according to the full dose packet of the corresponding functional block of described message packing and send to the processing of request unit, comprise the last first incremental data bag sequence number that sends in the described full dose packet.
10, a kind of device of synchrodata is characterized in that, comprising:
Incremental data bag message sink unit, be used to receive the incremental data bag message that other processing units send, and whether the 3rd incremental data bag sequence number of first incremental data bag sequence number that relatively receives and the preservation of second processing unit is continuous, if discontinuous, then send the message of asking synchronous full dose data to described other processing units;
Incremental data bag sequence number message sink unit, be used to receive incremental data bag sequence number message, and whether the second incremental data bag sequence number that relatively receives equates with the 3rd incremental data bag sequence number that second processing unit is preserved, if unequal, then send the message of asking synchronous full dose data to other processing units;
Full dose packet receiving element after being used to receive the full dose packet of other processing units transmissions, is updated to the first incremental data bag sequence number that comprises in the described full dose packet with the 3rd delta package sequence number of preserving.
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