CN105450356A - Lost data recovery processing method and device - Google Patents
Lost data recovery processing method and device Download PDFInfo
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- CN105450356A CN105450356A CN201410447183.1A CN201410447183A CN105450356A CN 105450356 A CN105450356 A CN 105450356A CN 201410447183 A CN201410447183 A CN 201410447183A CN 105450356 A CN105450356 A CN 105450356A
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Abstract
The invention provides a lost data recovery processing method and a lost data recovery processing device. The recovery processing method comprises the steps that: a first base station receives a synchronous message; the first base station identifies a lost data message in the synchronous message; and the first base station transmits a request message for requesting transmission of the data message to a second base station. By adopting the technical scheme provide by the invention, the problem that the user experience is affected by discontinuity of multicast service since synchronous frames are lost in relevant technology is solved, the base station can receive the lost data message transmitted by another base station before a Uu side dispatching moment, the lost synchronous sequence is recovered, and the discontinuity of multicast service caused by silence is avoided.
Description
Technical field
The present invention relates to the communications field, more particularly, relate to a kind of Recovery processing method and device of obliterated data.
Background technology
In Long Term Evolution (LongTermEvolution, referred to as LTE) commercial network, core network packet loss ubiquity.
For ensureing real-time and the accuracy of wireless side user data transmission, multimedia broadcast multi-broadcasting business (MultimediaBroadcastMulticastService, referred to as MBMS) synchronous protocol specifies the continuity of the synchronizing information detection synchronization frame that receiving terminal needs to be carried by synchronization frame.When detecting continuity, whether the synchronization frame that needs to reorder is lost (in correlation technique, packet sequence number is generally from 0 open numbering) to detect synchronization frame.
For ensureing that eNB transmits same user data at identical multicast subframe, receiving terminal, after discovery lost synchronization frame, should stop transmitting the wireless sub-frame had influence on owing to lost synchronization frame; When determining to have had influence on which wireless sub-frame, should stop transmitting relevant Multicast Channel (MulticastChannel, referred to as MCH), until this Multicast Channel dispatching cycle or MCH dispatching cycle (MCHschedulingperiod, referred to as MSP) terminate.The multicast service of now MCH transmission will produce discontinuous, have a strong impact on the Consumer's Experience of multicast service.
For in correlation technique after lost synchronization frame, the discontinuous problem affecting Consumer's Experience caused of multicast service, not yet proposes effective solution at present.
Summary of the invention
The invention provides a kind of Recovery processing method and device of obliterated data, at least to solve the problem.
According to an aspect of the present invention, provide a kind of Recovery processing method of obliterated data, comprising: the first base station receives sync message; The data message lost in sync message described in described first identification of base stations; Described first base station sends for asking the request message sending described data message to the second base station.
Preferably, before described first base station sends the request message for asking to send described data message to the second base station, also comprise: described second base station is selected according to preset rules in described first base station from multiple base station, and described request message is sent to the second base station of selection.
Preferably, described preset rules comprise following one of at least: (1) is in the base station in same multicast/multicast single-frequency network network MBSFN region from described first base station, selects described second base station; (2) be in the base station of same multicast/multicast single-frequency network network MBSFN retaining zone from described first base station, select described second base station; (3) be in the base station in same multimedia broadcast multi-broadcasting business MBMS region from described first base station, select described second base station; (4) select to select described second base station in the base station of arbitrary condition in eligible (1)-(3) from Neighboring Cell List.
Preferably, described first base station, to after the second base station sends the request message for asking to send described data message, also comprises: described first base station initiated timer; After described timer expiry, when described first base station does not receive the described data message of described second base station transmission, described sync message is issued to process of eating dishes without rice or wine; When described first base station receives the described data message of described second base station transmission before described timer expiry, the described data message that described second base station sends is added in described sync message.
Preferably, described method also comprises: after described timer expiry, when described first base station receives the described data message of described second base station transmission, abandons the described data message that described first base station sends.
Preferably, described first base station, to after the second base station sends the request message for asking to send described data message, also comprises: described second base station judges whether this locality stores described data message; If so, then described data message is sent to described first base station; Otherwise, forbid processes said request message.
Preferably, the data message lost in sync message described in described first identification of base stations, comprise: when described sync message place first synchronizing sequence received in described first base station comprises control bag, sequence is unified to the bag sequence number in described first synchronizing sequence in described first base station, wherein, described bag sequence number comprises: the bag sequence number of packet and the bag sequence number of control bag; The sequence number of bag described in ranking results exist be interrupted time, using the packet that lacks in ranking results corresponding to the bag sequence number data message as described loss.
Preferably, when described first synchronizing sequence does not comprise control bag, if described first synchronizing sequence is not the first synchronizing sequence received in the current sync cycle, then obtain the control bag of the second synchronizing sequence and the control bag of the 3rd synchronizing sequence, wherein, described first synchronizing sequence, described second synchronizing sequence and described 3rd synchronizing sequence are positioned at same synchronizing cycle, and described second synchronizing sequence is the previous synchronizing sequence of described first synchronizing sequence, described 3rd synchronizing sequence is a rear synchronizing sequence of described first synchronizing sequence; Determine that in described first synchronizing sequence, last packet is to the quantity X:X=Y-Z-P controlling to wrap the data message lost according to following formula, wherein, packet total amount in the control bag that Y is described 3rd synchronizing sequence indicated by total data bag data field, packet total amount in the control bag that Z is described second synchronizing sequence indicated by total data bag data field, P is the bag sequence number of the control bag of described 3rd synchronizing sequence; Last packet sequence number in described ranking results is added successively 1 and add X time continuously, and then determine the data message lost in described first synchronizing sequence successively.
Preferably, do not comprise at described first synchronizing sequence and control bag, and described first synchronizing sequence is when being the first synchronizing sequence received in the current sync cycle, then obtain the control bag of the 4th synchronizing sequence, wherein, described first synchronizing sequence and described 4th synchronizing sequence are positioned at same synchronizing cycle, and described 4th synchronizing sequence is a rear synchronizing sequence of described first synchronizing sequence; Determine that in described first synchronizing sequence, last packet is to the quantity A:A=B-P controlling to wrap the data message lost according to following formula, wherein, the packet total amount of B indicated by the total data bag data field of the control bag of described 4th synchronizing sequence, P is the bag sequence number of the control bag of described 4th synchronizing sequence; Last packet sequence number in described ranking results is added successively 1 and add A time continuously, and then determine the bag sequence number that the data message lost in described first synchronizing sequence is corresponding successively.
Preferably, in described sync message, carry following information: synchronizing cycle count information, this, count information was for determining the synchronizing cycle that described sync message belongs to synchronizing cycle.
Preferably, described synchronizing cycle, count information was carried on the following field of described sync message: described synchronizing cycle count information specific field, described sync message extended field.
Preferably, described first base station also comprises: the appointed information obtaining described data message before sending the request message for asking to send described data message to the second base station, and this appointed information is used for the described data message of unique identification; Described appointed information is carried in described request message.
Preferably, described appointed information comprise following one of at least: the bag sequence number of described data message in described sync message; The packet length of described data message.
Preferably, described appointed information comprises: synchronizing cycle count information, this, count information was for determining the synchronizing cycle that described sync message belongs to synchronizing cycle.
According to another aspect of the present invention, additionally provide a kind of Recovery processing device of obliterated data, be applied to the first base station, comprise: receiver module, for receiving sync message; Identification module, for identifying the data message lost in described sync message; First sending module, for sending for asking the request message sending described data message to the second base station.
Preferably, described device also comprises: select module, for selecting described second base station according to preset rules from multiple base station; Second sending module, for being sent to the second base station of selection by described request message.
Preferably, described receiver module, during for carrying following information in described sync message, receives sync message: synchronizing cycle count information, this, count information was for determining the synchronizing cycle that described sync message belongs to synchronizing cycle.
Pass through the present invention, confirmation adopt base station after lost data message, to the technical scheme of the data message that another base station requests is lost, to solve in correlation technique after lost synchronization frame, the discontinuous problem affecting Consumer's Experience caused of multicast service, base station can have received the data message of the loss that another base station sends before Uu side scheduling instance arrives, and having recovered the synchronizing sequence lost, having avoided the multicast service caused because mourning in silence discontinuous.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, and form a application's part, schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the flow chart of the Recovery processing method of obliterated data according to the embodiment of the present invention;
Fig. 2 is the flow chart of the Recovery processing method of obliterated data according to the preferred embodiment of the invention;
Fig. 3 is a flow chart again of the Recovery processing method of obliterated data according to the preferred embodiment of the invention;
Fig. 4 is the another flow chart of the Recovery processing method of obliterated data according to the preferred embodiment of the invention;
Fig. 5 is the another flow chart of the Recovery processing method of obliterated data according to the preferred embodiment of the invention;
Fig. 6 is the schematic diagram of the SYNCPDUType0 form in correlation technique;
Fig. 7 is the schematic diagram of the SYNCPDUType1 form in correlation technique;
Fig. 8 is the schematic diagram of the SYNCPDUType2 form in correlation technique;
Fig. 9 is the schematic diagram of the SYNCPDUType3 form in correlation technique;
Figure 10 is the schematic diagram of transmission two synchronizing sequences according to the embodiment of the present invention;
Out of order schematic diagram is there is in Figure 11 according to transmission two synchronizing sequences of the embodiment of the present invention;
Figure 12 is the out of order process schematic diagram of the synchronizing sequence in correlation technique;
Figure 13 is the schematic diagram of the SYNCPDUType0 form according to the embodiment of the present invention;
Figure 14 is another schematic diagram of the SYNCPDUType0 form according to the embodiment of the present invention;
Figure 15 is the schematic diagram of the SYNCPDUType1 form according to the embodiment of the present invention;
Figure 16 is the schematic diagram of the SYNCPDUType2 form according to the embodiment of the present invention;
Figure 17 is the schematic diagram of the SYNCPDUType3 form according to the embodiment of the present invention;
Figure 18 is the schematic diagram of the sending method of two synchronizing sequences according to the preferred embodiment of the invention;
Figure 19 there occurs out of order schematic diagram according to adjacent two synchronizing sequences adjacent two synchronizing cycles of the embodiment of the present invention;
Figure 20 be according to two adjacent sync sequences of the embodiment of the present invention occur out of order after process schematic diagram;
Figure 21 is the structured flowchart of the Recovery processing device of obliterated data according to the embodiment of the present invention;
Figure 22 is another structured flowchart of the Recovery processing device of obliterated data according to the embodiment of the present invention.
Embodiment
Hereinafter also describe the present invention in detail with reference to accompanying drawing in conjunction with the embodiments.It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.
Other features and advantages of the present invention will be set forth in the following description, and, partly become apparent from specification, or understand by implementing the present invention.Object of the present invention and other advantages realize by structure specifically noted in write specification, claims and accompanying drawing and obtain.
Embodiments provide a kind of Recovery processing method of obliterated data, Fig. 1 is the flow chart of the Recovery processing method of obliterated data according to the embodiment of the present invention, and as shown in Figure 1, the method comprises the steps:
Step S102: the first base station receives sync message;
Step S104: the data message lost in the above-mentioned sync message of above-mentioned first identification of base stations;
Step S106: above-mentioned first base station sends for asking the request message sending above-mentioned data message to the second base station.
By each step above-mentioned, adopt the first base station after confirming the data message lost in the sync message received, to the technical scheme of the data message that another base station requests is lost, to solve in correlation technique after lost synchronization frame, the discontinuous problem affecting Consumer's Experience caused of multicast service, base station can have received the data message of the loss that another base station sends before Uu side scheduling instance arrives, recovering the synchronizing sequence lost, having avoided the multicast service caused because mourning in silence discontinuous.
Alternatively, before step S106, namely before above-mentioned first base station sends the request message for asking to send above-mentioned data message to the second base station, also comprise: above-mentioned second base station is selected according to preset rules in above-mentioned first base station from multiple base station, and above-mentioned request message is sent to the second base station of selection.
In an embodiment of the embodiment of the present invention, above-mentioned preset rules comprise following one of at least: (1) is in the base station in same multicast/multicast single-frequency network network MBSFN region from above-mentioned first base station, selects above-mentioned second base station; (2) be in the base station of same multicast/multicast single-frequency network network MBSFN retaining zone from above-mentioned first base station, select above-mentioned second base station; (3) be in the base station in same multimedia broadcast multi-broadcasting business MBMS region from above-mentioned first base station, select above-mentioned second base station; (4) select to select above-mentioned second base station in the base station of arbitrary condition in eligible (1)-(3) from Neighboring Cell List, namely eNB selects to send the eNB losing message anti-pass request, has following four kinds of strategies: belong to same MBSFN region; Belong to same MBSFN retaining zone; Belong to same MBMS region; From Neighboring Cell List, select to meet 1 or 2 or 3, the eNB of situation.
In another embodiment of the embodiment of the present invention, above-mentioned first base station, to after the second base station sends the request message for asking to send above-mentioned data message, can also perform following processing procedure: above-mentioned first base station initiated timer; After above-mentioned timer expiry, when above-mentioned first base station does not receive the above-mentioned data message of above-mentioned second base station transmission, above-mentioned sync message is issued to process of eating dishes without rice or wine; When above-mentioned first base station receives the above-mentioned data message of above-mentioned second base station transmission before above-mentioned timer expiry, the above-mentioned data message that above-mentioned second base station sends is added in above-mentioned sync message.
In order to make technique scheme more complete, said method also comprises: after above-mentioned timer expiry, when above-mentioned first base station receives the above-mentioned data message of above-mentioned second base station transmission, abandons the above-mentioned data message that above-mentioned first base station sends.
In embodiments of the present invention, the data message lost in the above-mentioned sync message of above-mentioned first identification of base stations, can realize in the following manner (mainly divided two kinds of situations in the embodiment of the present invention, its Main Basis controls bag for judging whether to have received in above-mentioned first synchronizing sequence):
The first situation
When above-mentioned sync message place first synchronizing sequence received in above-mentioned first base station comprises control bag, sequence is unified to the bag sequence number in above-mentioned first synchronizing sequence in above-mentioned first base station, wherein, above-mentioned bag sequence number comprises: the bag sequence number of packet and the bag sequence number of control bag; When there is interruption in above-mentioned bag sequence number in ranking results, using the packet that lacks in ranking results corresponding to the bag sequence number data message as above-mentioned loss, because the bag sequence number that each controls message in MBMS synchronous protocol is identical, therefore, when bag sequence number exists interruption, the data message of loss just can be determined according to the bag sequence number of disappearance.
Below in conjunction with an example, technique scheme is described, such as: the first synchronizing sequence that the first base station receives, above-mentioned first synchronizing sequence is actually and contains six bags: five packets, bag sequence number is followed successively by 0, 1, 2, 3, 4, one is also had to control bag, bag sequence number is 5, but in fact the first base station receive be package number is 0, 1, 2, controlling packet number is the synchronizing sequence of 5, namely the first loss of sequence synchronisation of receiving package number in the first base station is 3, the packet of 4, so in this case, adopt the technique scheme that the embodiment of the present invention provides, to identify in ranking results 0, 1, 2, 5, there is the situation that bag sequence number is interrupted, and the bag sequence number of disappearance is 3, 4, so bag sequence number is 3, the packet of 4 is exactly the message lost in the first synchronizing sequence.
The second situation
1) when above-mentioned first synchronizing sequence does not comprise control bag, if above-mentioned first synchronizing sequence is not the first synchronizing sequence received in the current sync cycle, then obtain the control bag of the second synchronizing sequence and the control bag of the 3rd synchronizing sequence, wherein, above-mentioned first synchronizing sequence, above-mentioned second synchronizing sequence and above-mentioned 3rd synchronizing sequence are positioned at same synchronizing cycle, and above-mentioned second synchronizing sequence is the previous synchronizing sequence of above-mentioned first synchronizing sequence, above-mentioned 3rd synchronizing sequence is a rear synchronizing sequence of above-mentioned first synchronizing sequence; Determine that in above-mentioned first synchronizing sequence, last packet is to the quantity X:X=Y-Z-P controlling to wrap the data message lost according to following formula, wherein, packet total amount in the control bag that Y is above-mentioned 3rd synchronizing sequence indicated by total data bag data field, packet total amount in the control bag that Z is above-mentioned second synchronizing sequence indicated by total data bag data field, P is the bag sequence number of the control bag of above-mentioned 3rd synchronizing sequence; Last packet sequence number in above-mentioned ranking results is added successively 1 and add X time continuously, and then determine the data message lost in above-mentioned first synchronizing sequence successively.
2) control bag is not comprised at the first synchronizing sequence, and the first synchronizing sequence is when being the first synchronizing sequence received in the current sync cycle, then obtain the control bag of the 4th synchronizing sequence, wherein, first synchronizing sequence and the 4th synchronizing sequence are positioned at same synchronizing cycle, and the 4th synchronizing sequence is a rear synchronizing sequence of the first synchronizing sequence; Determine that in the first synchronizing sequence, last packet is to the quantity A:A=B-P controlling to wrap the data message lost according to following formula, wherein, the packet total amount of B indicated by the total data bag data field of the control bag of the 4th synchronizing sequence, P is the bag sequence number of the control bag of the 4th synchronizing sequence; Last packet sequence number in above-mentioned ranking results is added successively 1 and add A time continuously, and then determine the bag sequence number that the data message lost in the first synchronizing sequence is corresponding successively.
In order to adapt to actual needs, the embodiment of the present invention additionally provides following technical scheme to determine the data message lost: first packet sequence number in above-mentioned ranking results is subtracted 1 successively and subtract X time continuously, and then determine the data message lost in above-mentioned first synchronizing sequence successively, alternatively, in specific implementation process, the above-mentioned technical scheme added continuously X time and subtract X time continuously can be combined according to actual needs.
Below in conjunction with another two preferred exemplary, technique scheme is described:
Preferred exemplary one
If a synchronizing sequence does not receive control message, whether the information of carrying by means of only this synchronizing sequence data message lost data message before cannot determining to control message, need in conjunction with after this synchronizing sequence one with the control message information of previous synchronizing sequence to the total number of the message calculating this synchronizing sequence.Then when three synchronizing sequences belong to same synchronizing cycle, first synchronizing sequence, 3rd synchronizing sequence have received control message, 3rd, the totalpacketnum that first synchronizing sequence controls message subtracts each other, obtain the data message sum of the second synchronizing sequence, deduct the packetnum of second last data message of synchronizing sequence again, deduct the bag sequence number of the control bag of a synchronizing sequence after above-mentioned synchronizing sequence again, income value represents the data message number lost before the second synchronizing sequence controls message, the bag sequence number of packet loss message increases (subtracting) certainly by the bag sequence number of second last data message of synchronizing sequence, each from increasing (subtracting).The bag sequence number of packet loss message increases (subtracting) by income value at every turn certainly.
Preferred exemplary two
First synchronizing sequence, the second synchronizing sequence belong to two synchronizing sequences of synchronizing cycle, first loss of sequence synchronisation control message, second synchronizing sequence existence have received control message, second totalpacketnum controlling message deducts the packetnum of first last data message of synchronizing sequence, deduct the bag sequence number of the control bag of a synchronizing sequence after above-mentioned synchronizing sequence again, income value represents the data message number lost before the second synchronizing sequence controls message, and the bag sequence number of packet loss message increases (subtracting) by income value at every turn certainly.The bag sequence number of packet loss message increases (subtracting) certainly by the bag sequence number of first last data message of synchronizing sequence, each from increasing (subtracting).
It should be noted that, the overall budget digital section in the embodiment of the present invention is carried in the control message of synchronizing sequence, and control message refers to Type0, Type3 message in synchronous protocol; Data message refers to Type1, Type2 message in synchronous protocol.
Below illustrate the technical scheme of the data message lost in above-mentioned identification sync message: after eNB receives sync message, need to sort to sync message, according to ranking results, in conjunction with Type0 or Type3, the Type1 message of the loss identified.
Concrete, eNB resolves the Timestamp comprised in Type1 heading, the time stamp T imestamp comprised in PacketNumber and Type0 or Type3 heading, packet sequence number PacketNumber, the quantity TotalNumberOfPacket of total packet, identical Type1 and Type0 or Type3 belongs to a synchronizing sequence, the sync message of a synchronizing sequence is according to PacketNumber ascending sort, if it is discontinuous to identify PacketNumber, then think this Type1 message dropping, unreceived PacketNumber thinks to be exactly the PacketNumber of this Type1 message, if eNB does not receive this synchronizing sequence Type0 or Type3, then need by the TotalNumberOfPacket in the previous synchronizing sequence of this synchronizing sequence and Type0 or Type3 of a rear synchronizing sequence to judge whether the Type1 of this synchronizing sequence loses, unreceived PacketNumber thinks to be exactly the PacketNumber of this Type1 message.
In another embodiment of the embodiment of the present invention, before above-mentioned first base station sends the request message for asking to send above-mentioned data message to the second base station, also comprise: the appointed information obtaining above-mentioned data message, this appointed information is used for the above-mentioned data message of unique identification; Above-mentioned appointed information is carried in above-mentioned request message, wherein, above-mentioned appointed information comprise following one of at least: the bag sequence number of above-mentioned data message in above-mentioned sync message; The packet length of above-mentioned data message; Above-mentioned appointed information comprises: synchronizing cycle count information, this, count information was for determining the synchronizing cycle that above-mentioned sync message belongs to synchronizing cycle.
In sum, the embodiment of the present invention in fact provides a kind of eNB and the recovery way that SYNCPDU loses detected.The method greatly can improve the continuity of the discontinuity guarantee eMBMS business transmitting the eMBMS business that packet loss causes because of core-network side, loss message information is encapsulated as and loses message anti-pass request, be sent to by X2 other eNB belonging to a MBMS district (only to illustrate, but do not limit the embodiment of the present invention), ask the sync message that this eNB of other eNB anti-pass loses, and starting timer (Timer), duration is by arriving MSP initial time corresponding to this synchronizing sequence.Lose message information refer to lose the packet sequence number (PacketNumber) of message, data packet length (LengthofthePacket), synchronizing cycle counting.
After eNB have received the loss message anti-pass request that other eNB send, parse lose message PacketNumber, LengthofthePacket, synchronizing cycle counting; Judge whether this message is cached in internal memory: if this message is not cached in internal memory, then do not process this request; If this packet buffer is in internal memory, the encapsulation of this message is lost message anti-pass response is sending to request to lose message eNB by X2.
ENB, before Timer time-out, does not receive the loss message anti-pass response that other eNB send, after Timer time-out, synchronizing sequence is issued to process of eating dishes without rice or wine; If before Timer time-out, receiving the loss message anti-pass response that other eNB send, being inserted in the synchronizing sequence of sequence by losing message: if synchronizing sequence all collects, then synchronizing sequence is issued to process of eating dishes without rice or wine; If not yet all collect, continue to wait for.
After Timer time-out, existing synchronizing sequence is issued to process of eating dishes without rice or wine; If after Timer time-out, receive the loss message anti-pass response that other eNB send, then abandon it.
In order to better understand the recovery process after above-mentioned obliterated data, be described below in conjunction with preferred embodiment, but do not limit the present invention, it should be noted that, the BMSC occurred in following examples is the abbreviation of broadcast multicast service center (Broadcast-MulticastServiceCentre), MBMSGW is the abbreviation of multimedia broadcast multi-broadcasting business-gateway, and eNBA is the abbreviation of base station A, and eNBB is the abbreviation of base station B.
Fig. 2 is the flow chart of the restoration methods of obliterated data according to the preferred embodiment of the invention, as shown in Figure 2:
Step S202:BMSC sends synchronizing sequence to MBMSGW.
Step S204-step S206::MBMSGW according to multicast protocol to eNBA, eNBB, multicast synchronizing sequence.
After step S208:eNBA receives synchronizing sequence, after sequence, detect that sync message goes out active, structure loses message information, generates and loses message anti-pass request.
Step S210:eNBA strategically, determines to send the eNB losing message anti-pass request and is respectively eNBB.
Step S212:eNBA sends loss message anti-pass request by X2 to eNBB.
Step S214:eNBA starts Timer, and this Timer is time-out before the next MSP that the timestamp losing message is corresponding, reserves eNBUu scheduling delay.
Step S216:eNBB, after X2 receives the loss message anti-pass request of eNBA, detects the packet buffer of request in internal memory.
Buffer memory message composition is lost message anti-pass response and is sent to eNBA by X2 by step S218:eNBB.
When step S220:eNBA receives and loses message anti-pass response, Timer is not overtime, parses loss message, collects synchronizing sequence, be issued to Uu.
Fig. 3 is a flow chart again of the restoration methods of obliterated data according to the preferred embodiment of the invention, as shown in Figure 3:
Step S302:BMSC sends synchronizing sequence to MBMSGW.
Step S304-step S306:MBMSGW according to multicast protocol to eNBA, eNBB, multicast synchronizing sequence.
After step S308:eNBA receives synchronizing sequence, after sequence, detect that sync message goes out active, structure loses message information, generates and loses message anti-pass request.
Step S310:eNBA strategically, determines to send the eNB losing message anti-pass request and is respectively eNBB.
Step S312:eNBA sends loss message anti-pass request by X2 to eNBB.
Step S314:eNBA starts Timer, and this Timer is time-out before the next MSP that the timestamp losing message is corresponding, reserves eNBUu scheduling delay.
Step S316:eNBB is after X2 receives the loss message anti-pass request of eNBA, and the message part detecting request is cached in internal memory.
Step S318:eNBB buffer memory message composition is lost message anti-pass response by X2 send to eNBA (.
When step S320:eNBA receives and loses message anti-pass response, Timer is not overtime, parses loss message, does not collect synchronizing sequence, continues to wait for.
During step S322:eNBTimer time-out, existing synchronizing sequence is issued Uu process.
Fig. 4 is the another flow chart of the restoration methods of obliterated data according to the preferred embodiment of the invention, as shown in Figure 4:
Step S402:BMSC sends synchronizing sequence to MBMSGW:.
Step S404-step S406:MBMSGW according to multicast protocol to eNBA, eNBB, multicast synchronizing sequence.
After step S408:eNBA receives synchronizing sequence, after sequence, detect that sync message goes out active, structure loses message information, generates and loses message anti-pass request.
Step S410:eNBA strategically, determines to send the eNB losing message anti-pass request and is respectively eNBB.
Step S412:eNBA sends loss message anti-pass request by X2 to eNBB.
Step S414:eNBA starts Timer, and this Timer is time-out before the next MSP that the timestamp losing message is corresponding, reserves eNBUu scheduling delay.
Step S416:eNBB, after X2 receives the loss message anti-pass request of eNBA, detects the packet buffer of request in internal memory.
Buffer memory message composition is lost message anti-pass response and is sent to eNBA by X2 by step S418:eNBB.
Step S420:eNBATimer time-out, does not receive and loses message anti-pass response, existing synchronizing sequence is issued Uu process.
After step S422:eNBATimer time-out, have received the mistake message anti-pass response of eNBB, abandon this mistake message anti-pass response.
Fig. 5 is the another flow chart of the restoration methods of obliterated data according to the preferred embodiment of the invention, as shown in Figure 5:
Step S502:BMSC sends synchronizing sequence to MBMSGW.
Step S504-step S506::MBMSGW according to multicast protocol to eNBA, eNBB, multicast synchronizing sequence.
After step S508:eNBA receives synchronizing sequence, after sequence, detect that sync message goes out active, structure loses message information, generates and loses message anti-pass request.
Step S510:eNBA strategically, determines to send the eNB losing message anti-pass request and is respectively eNBB.
Step S512:eNBA sends loss message anti-pass request by X2 to eNBB.
Step S514:eNBA starts Timer, and this Timer is time-out before the next MSP that the timestamp losing message is corresponding, reserves eNBUu scheduling delay.
Step S516:eNBB is after X2 receives the loss message anti-pass request of eNBA, and the message detecting request is not cached in internal memory, does not send and loses message anti-pass response.
Step S518:eNBATimer time-out, does not receive and loses message anti-pass response, existing synchronizing sequence is issued Uu process.
In correlation technique, receiving terminal there occurs synchronizing sequence message in the synchronizing cycle when other synchronizing cycles of out of order arrival, according to related asynchronous messages, cannot reorder by correct carrying out.Reason is, synchronizing information entrained by synchronizing sequence cannot judge which synchronizing cycle specific synchronization frame belongs to, namely also there is synchronizing sequence in prior art and cannot judge which synchronizing cycle specific frame belongs to, in order to solve the problems of the technologies described above, the embodiment of the present invention additionally provides following technical scheme:
Carry following information in above-mentioned sync message: synchronizing cycle count information, this, count information was for determining the synchronizing cycle that above-mentioned sync message belongs to synchronizing cycle, alternatively, above-mentioned synchronizing cycle, count information was carried on the following field of above-mentioned sync message: above-mentioned synchronizing cycle count information specific field, above-mentioned sync message extended field.
Namely the embodiment of the present invention is counting synchronizing cycle increasing transmitting terminal in the synchronizing information of synchronization frame, according to counting synchronizing cycle, receiving terminal determines which synchronizing cycle synchronization frame belongs to, thus the synchronizing sequence message solved in the synchronizing cycle cannot to reorder problem by correct carrying out after out of order arrival within other synchronizing cycles.
How can solve the process of the technical problem that it will solve in order to better understand above-mentioned interpolation synchronizing cycle after counting, being described below in conjunction with preferred embodiment.
As shown in Fig. 6,7,8,9, in correlation technique, SYNCPDUType0 form; SYNCPDUType1 form; SYNCPDUType2 form; SYNCPDUType3 form; When above-mentioned Type0, Type1, Type2, Type3 occur out of order, as shown in Figure 10, BMSC have sent two synchronizing sequences, and as shown in figure 11, adjacent two synchronizing cycles, adjacent two synchronizing sequences there occurs out of order in eNB side.
As shown in figure 12, and the technique scheme that the embodiment of the present invention provides, added the Type0 form after counting synchronizing cycle to processing mode in correlation technique; Type1 form; Type2 form and Type3 form, as shown in figs. 13-17.
Figure 18 is the schematic diagram of the sending method of two synchronizing sequences according to the preferred embodiment of the invention, Figure 19 is that under the new method according to the embodiment of the present invention adjacent two synchronizing sequences there occurs out of order situation in eNB side adjacent two synchronizing cycles, Figure 20 be according to two adjacent sync sequences of the embodiment of the present invention occur out of order after process schematic diagram.
Below in conjunction with an example, technique scheme is briefly described.
It should be noted that, transmitting terminal relative to number synchronizing cycle of start time point process synchronizing cycle, span: the unit of 0 – 2m*8-1, m is octets.Length of field: for Type0, m=0.5, for Type1, Type2, Type3, m=4.
BMSC synchronizing cycle N have sent a synchronizing sequence according to the order of sequence, this synchronizing sequence has 3 Type1 messages, a Type3 message, PacketNumber is respectively 0,1,2,3, TimeStamp and is 50, SynchronisationPeriodCounter and is N (Figure 18).
BMSC have sent a synchronizing sequence according to the order of sequence at next one N+1 synchronizing cycle, this synchronizing sequence has 3 Type1 messages, a Type3 message, PacketNumber is respectively 0,1,2,3, TimeStamp is 10, SynchronisationPeriodCounter and is N+1 (Figure 18).
ENB have received and out of order two synchronizing sequences occurs, totally 8 synchronization frames, and the synchronization frame in step 2 is out of order in synchronizing cycle N, and the synchronization frame of step 1 is out of order to (Figure 19) in synchronizing cycle N+1.
ENB is divided into the synchronizing sequence of two synchronizing cycles according to SynchronisationPeriodCounter.
ENB marks off two different synchronizing sequences according to TimeStamp.
ENB, two synchronizing sequence inside, to reorder synchronization frame according to PacketNumber respectively, draws two complete synchronizing sequences (Figure 20).
Contrast discovery from Figure 12 and Figure 20, the method successfully solves synchronizing sequence message in the synchronizing cycle and cannot to reorder problem by correct carrying out after out of order arrival within other synchronizing cycles.
Additionally provide a kind of recovery device of obliterated data in the present embodiment, be applied to the first base station, for realizing above-described embodiment and preferred implementation, having carried out repeating no more of explanation, and below the module related in this device being described.As used below, term " module " can realize the software of predetermined function and/or the combination of hardware.Although the device described by following examples preferably realizes with software, hardware, or the realization of the combination of software and hardware also may and conceived.Figure 21 is the structured flowchart of the recovery device of obliterated data according to the embodiment of the present invention.As shown in figure 21, this device comprises:
Receiver module 210, for receiving sync message;
Identification module 212, for identifying the data message lost in above-mentioned sync message;
First sending module 214, for sending for asking the request message sending above-mentioned data message to the second base station.
By the comprehensive function of above-mentioned modules, confirmation adopt base station after lost data message, to the technical scheme of the data message that another base station requests is lost, to solve in correlation technique after lost synchronization frame, the discontinuous problem affecting Consumer's Experience caused of multicast service, base station can have received the data message of the loss that another base station sends before Uu side scheduling instance arrives, and having recovered the synchronizing sequence lost, having avoided the multicast service caused because mourning in silence discontinuous.
Alternatively, as shown in figure 22, said apparatus also comprises: select module 216, for selecting above-mentioned second base station according to preset rules;
Second sending module 218, selects module 216 to connect, with the second base station for above-mentioned request message being sent to selection.
The further improvement of the embodiment of the present invention to technique scheme is, receiver module 210, during for carrying following information in above-mentioned sync message, receive sync message: synchronizing cycle count information, this, count information was for determining the synchronizing cycle that above-mentioned data message belongs to synchronizing cycle.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, also can be that the independent physics of unit exists, also can two or more unit in a unit integrated.Above-mentioned integrated unit both can adopt the form of hardware to realize, and the form of SFU software functional unit also can be adopted to realize.
It should be noted that, term " first ", " second " etc. in specification of the present invention and claims and above-mentioned accompanying drawing are for distinguishing similar object, and need not be used for describing specific order or precedence.Should be appreciated that the object used like this can exchange in the appropriate case, so as embodiments of the invention described herein can with except here diagram or describe those except order implement.In addition, term " comprises " and " having " and their any distortion, intention is to cover not exclusive comprising, such as, contain those steps or unit that the process of series of steps or unit, method, system, product or equipment is not necessarily limited to clearly list, but can comprise clearly do not list or for intrinsic other step of these processes, method, product or equipment or unit.
In sum, the embodiment of the present invention achieves following beneficial effect: to solve in correlation technique after lost synchronization frame, the discontinuous problem affecting Consumer's Experience caused of multicast service, base station can have received the data message of the loss that another base station sends before Uu side scheduling instance arrives, recovering the synchronizing sequence lost, having avoided the multicast service caused because mourning in silence discontinuous.
Obviously, those skilled in the art should be understood that, above-mentioned of the present invention each module or each step can realize with general calculation element, they can concentrate on single calculation element, or be distributed on network that multiple calculation element forms, alternatively, they can realize with the executable program code of calculation element, thus, they can be stored and be performed by calculation element in the storage device, and in some cases, step shown or described by can performing with the order be different from herein, or they are made into each integrated circuit modules respectively, or the multiple module in them or step are made into single integrated circuit module to realize.Like this, the present invention is not restricted to any specific hardware and software combination.
These are only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (17)
1. a Recovery processing method for obliterated data, is characterized in that, comprising:
First base station receives sync message;
The data message lost in sync message described in described first identification of base stations;
Described first base station sends for asking the request message sending described data message to the second base station.
2. method according to claim 1, is characterized in that, described first base station also comprises before sending the request message for asking to send described data message to the second base station:
Described second base station is selected according to preset rules in described first base station from multiple base station, and described request message is sent to the second base station of selection.
3. method according to claim 2, is characterized in that, described preset rules comprise following one of at least:
(1) be in the base station in same multicast/multicast single-frequency network network MBSFN region from described first base station, select described second base station;
(2) be in the base station of same multicast/multicast single-frequency network network MBSFN retaining zone from described first base station, select described second base station;
(3) be in the base station in same multimedia broadcast multi-broadcasting business MBMS region from described first base station, select described second base station;
(4) select to select described second base station in the base station of arbitrary condition in eligible (1)-(3) from Neighboring Cell List.
4. method according to claim 1, is characterized in that, described first base station, to after the second base station sends the request message for asking to send described data message, also comprises:
Described first base station initiated timer;
After described timer expiry, when described first base station does not receive the described data message of described second base station transmission, described sync message is issued to process of eating dishes without rice or wine;
When described first base station receives the described data message of described second base station transmission before described timer expiry, the described data message that described second base station sends is added in described sync message.
5. method according to claim 4, is characterized in that, described method also comprises: after described timer expiry, when described first base station receives the described data message of described second base station transmission, abandons the described data message that described first base station sends.
6. method according to claim 1, is characterized in that, described first base station, to after the second base station sends the request message for asking to send described data message, also comprises:
Described second base station judges whether this locality stores described data message; If so, then described data message is sent to described first base station; Otherwise, forbid processes said request message.
7. method according to claim 1, is characterized in that, the data message lost in sync message described in described first identification of base stations, comprising:
When described sync message place first synchronizing sequence received in described first base station comprises control bag, sequence is unified to the bag sequence number in described first synchronizing sequence in described first base station, wherein, described bag sequence number comprises: the bag sequence number of packet and the bag sequence number of control bag;
The sequence number of bag described in ranking results exist be interrupted time, using the packet that lacks in ranking results corresponding to the bag sequence number data message as described loss.
8. method according to claim 7, is characterized in that,
When described first synchronizing sequence does not comprise control bag, if described first synchronizing sequence is not the first synchronizing sequence received in the current sync cycle, then obtain the control bag of the second synchronizing sequence and the control bag of the 3rd synchronizing sequence, wherein, described first synchronizing sequence, described second synchronizing sequence and described 3rd synchronizing sequence are positioned at same synchronizing cycle, and described second synchronizing sequence is the previous synchronizing sequence of described first synchronizing sequence, described 3rd synchronizing sequence is a rear synchronizing sequence of described first synchronizing sequence;
Determine that in described first synchronizing sequence, last packet is to the quantity X controlling to wrap the data message lost according to following formula:
X=Y-Z-P, wherein, packet total amount in the control bag that Y is described 3rd synchronizing sequence indicated by total data bag data field, the packet total amount in the control bag that Z is described second synchronizing sequence indicated by total data bag data field, P is the bag sequence number of the control bag of described 3rd synchronizing sequence;
Last packet sequence number in described ranking results is added successively 1 and add X time continuously, and then determine the data message lost in described first synchronizing sequence successively.
9. method according to claim 8, is characterized in that,
Do not comprise at described first synchronizing sequence and control bag, and described first synchronizing sequence is when being the first synchronizing sequence received in the current sync cycle, then obtain the control bag of the 4th synchronizing sequence, wherein, described first synchronizing sequence and described 4th synchronizing sequence are positioned at same synchronizing cycle, and described 4th synchronizing sequence is a rear synchronizing sequence of described first synchronizing sequence;
Determine that in described first synchronizing sequence, last packet is to the quantity A controlling to wrap the data message lost according to following formula:
A=B-P, wherein, the packet total amount of B indicated by the total data bag data field of the control bag of described 4th synchronizing sequence, P is the bag sequence number of the control bag of described 4th synchronizing sequence;
Last packet sequence number in described ranking results is added successively 1 and add A time continuously, and then determine the bag sequence number that the data message lost in described first synchronizing sequence is corresponding successively.
10. method according to any one of claim 1 to 9, is characterized in that, carries following information in described sync message:
Synchronizing cycle count information, this, count information was for determining the synchronizing cycle that described sync message belongs to synchronizing cycle.
11. methods according to claim 10, is characterized in that, described synchronizing cycle, count information was carried on the following field of described sync message:
Described synchronizing cycle count information specific field, described sync message extended field.
12. methods according to claim 1, is characterized in that, described first base station also comprises before sending the request message for asking to send described data message to the second base station:
Obtain the appointed information of described data message, this appointed information is used for the described data message of unique identification;
Described appointed information is carried in described request message.
13. methods according to claim 12, is characterized in that, described appointed information comprise following one of at least:
The bag sequence number of described data message in described sync message; The packet length of described data message.
14. methods according to claim 12 or 13, it is characterized in that, described appointed information also comprises:
Synchronizing cycle count information, this, count information was for determining the synchronizing cycle that described sync message belongs to synchronizing cycle.
The Recovery processing device of 15. 1 kinds of obliterated datas, is applied to the first base station, it is characterized in that, comprising:
Receiver module, for receiving sync message;
Identification module, for identifying the data message lost in described sync message;
First sending module, for sending for asking the request message sending described data message to the second base station.
16. devices according to claim 15, is characterized in that, described device also comprises:
Select module, for selecting described second base station according to preset rules from multiple base station;
Second sending module, for being sent to the second base station of selection by described request message.
17. methods according to claim 15 or 16, it is characterized in that, described receiver module, during for carrying following information in described sync message, receive sync message: synchronizing cycle count information, this, count information was for determining the synchronizing cycle that described sync message belongs to synchronizing cycle.
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101500341A (en) * | 2008-02-02 | 2009-08-05 | 上海贝尔阿尔卡特股份有限公司 | Gateway and base station for content synchronization based on window and method thereof |
| CN102014339A (en) * | 2009-10-27 | 2011-04-13 | 大唐移动通信设备有限公司 | Method, device and system for configuring multimedia broadcast multicast service (MBMS) synchronization |
| CN102035794A (en) * | 2009-09-29 | 2011-04-27 | 中兴通讯股份有限公司 | Method and system for transmitting and receiving synchronizing sequence of multimedia broadcast multicast service |
| CN102036176A (en) * | 2009-09-29 | 2011-04-27 | 中兴通讯股份有限公司 | Method and network system for synchronously recovering multimedia broadcast multicast service |
| CN102143130A (en) * | 2010-06-30 | 2011-08-03 | 华为技术有限公司 | Method, device and system for acquiring key information in rapid channel switching |
| CN102368700A (en) * | 2011-10-25 | 2012-03-07 | 曙光信息产业(北京)有限公司 | Transmission method of massages in distributed system |
| CN102624485A (en) * | 2009-09-29 | 2012-08-01 | 华为技术有限公司 | Method and equipment for processing subframes |
-
2014
- 2014-09-03 CN CN201410447183.1A patent/CN105450356B/en active Active
- 2014-12-22 WO PCT/CN2014/094558 patent/WO2015154523A1/en active Application Filing
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101500341A (en) * | 2008-02-02 | 2009-08-05 | 上海贝尔阿尔卡特股份有限公司 | Gateway and base station for content synchronization based on window and method thereof |
| CN102035794A (en) * | 2009-09-29 | 2011-04-27 | 中兴通讯股份有限公司 | Method and system for transmitting and receiving synchronizing sequence of multimedia broadcast multicast service |
| CN102036176A (en) * | 2009-09-29 | 2011-04-27 | 中兴通讯股份有限公司 | Method and network system for synchronously recovering multimedia broadcast multicast service |
| CN102624485A (en) * | 2009-09-29 | 2012-08-01 | 华为技术有限公司 | Method and equipment for processing subframes |
| CN102014339A (en) * | 2009-10-27 | 2011-04-13 | 大唐移动通信设备有限公司 | Method, device and system for configuring multimedia broadcast multicast service (MBMS) synchronization |
| CN102143130A (en) * | 2010-06-30 | 2011-08-03 | 华为技术有限公司 | Method, device and system for acquiring key information in rapid channel switching |
| CN102368700A (en) * | 2011-10-25 | 2012-03-07 | 曙光信息产业(北京)有限公司 | Transmission method of massages in distributed system |
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