CN105682050B - MBMS data transmission method, broadcast/multicast service central apparatus and base station - Google Patents
MBMS data transmission method, broadcast/multicast service central apparatus and base station Download PDFInfo
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- CN105682050B CN105682050B CN201410676502.6A CN201410676502A CN105682050B CN 105682050 B CN105682050 B CN 105682050B CN 201410676502 A CN201410676502 A CN 201410676502A CN 105682050 B CN105682050 B CN 105682050B
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Abstract
The invention discloses a kind of MBMS data transmission method, broadcast/multicast service central apparatus and base stations, include: BMSC SYNC entity to base station send synchronizing sequence end frame when, judge whether to meet first condition, or second condition, if it is satisfied, then Type0 frame type is switched to Type3 frame type；BMSC judges whether to meet third condition after Type0 frame type is switched to Type3 frame type, if it is satisfied, then Type3 frame type is switched to Type0 frame type.The characteristics of this method is according to the quality of network quality and according to two kinds of frame frame types of Type0 and Type3, in conjunction with Network status dynamically adjust used in synchronizing sequence end frame type, the two kinds of frame types of Type0 and Type3 sent at the end of to synchronizing sequence switch over, to reach the balance between fault-tolerant recovery and efficiency of transmission, while also improving the efficiency of transmission of data.
Description
Technical field
The present invention relates to fields of communication technology, and in particular to a kind of MBMS data transmission method, broadcast/multicast service center
Equipment and base station.
Background technique
Multimedia broadcast/group broadcast service (Multimedia Broadcast/Multicast Service, abbreviation MBMS)
It is a kind of Technology of Mobile Multimedia scheme that 3GPP is proposed, is the technology by a data source to multiple targets transmission data, with
Realize that Internet resources especially interface-free resources are shared.Long Term Evolution (Long Term Evolution, abbreviation LTE) system
In for realize MBMS data air interface synchronization send, 3GPP evolved base station (Evolved Node B, referred to as
ENodeB) with broadcast/multicast service center (Broadcast/Multicast Service Centre, abbreviation BMSC) equipment it
Between introduce SYNC agreement, protocol stack is as shown in Figure 1.BMSC carries timestamp information in messages, and eNodeB refers to according to timestamp
The relative time shown determines the sending instant eated dishes without rice or wine, to realize that the synchronous of data sends.
Synchronizing cycle is to carry in SYNC PDU (SYNC Protocol Data Unit, SYNC protocol Data Unit)
Timestamp provides reference value of the initial time as relative time.It include several groups synchronizing sequence in each synchronizing cycle, one
Synchronizing sequence is one group of data for carrying identical time stamp, and each synchronizing sequence ending transmission control frame indicates synchronizing sequence
Terminate.The relationship of synchronizing cycle and synchronizing sequence is as shown in Figure 2.
3GPP defines two kinds of frame type structures of Type0 and Type3, such as Fig. 3 A and Fig. 3 B.Both comprising timestamp, packet
Serial number, accumulated bytes number, total packet number and total bytes information, in addition, Type3 load also carries all messages in synchronizing sequence
Length information, when more bag datas occur and continuously losing, receiving side can know the length and sequence of packet loss according to above- mentioned information
Number, instruction carries out silent processing at the corresponding moment of eating dishes without rice or wine, and prevents error diffusion.But Type3 message loaded length is indefinite, is not present
It needs to expend more bandwidth when packet loss.In contrast, Type0 message is brief, and data transmission efficiency is higher, network quality compared with
It is with the obvious advantage when good, but fault-tolerant ability is not so good as Type3.There is presently no a kind of methods to propose according to two kinds of frames of Type0 and Type3
How the characteristics of type combines Network status frame type to dynamically adjust used synchronizing sequence end frame type, to reach
Balance between fault-tolerant recovery and efficiency of transmission.
Summary of the invention
For the defects in the prior art, the present invention provides in a kind of MBMS data transmission method, broadcast/multicast service
Heart equipment and base station, the characteristics of according to two kinds of frame types of Type0 and Type3, dynamically adjust in conjunction with Network status used in
Synchronizing sequence end frame type, to reach the balance between fault-tolerant recovery and efficiency of transmission.
In a first aspect, the present invention provides a kind of MBMS data transmission method, comprising:
The SYNC entity of broadcast/multicast service central apparatus BMSC sends synchronizing sequence, the synchronizing sequence packet to base station
Include the end frame of multiple business data packets and Type0 frame type；
When the SYNC entity of the BMSC sends the end frame of synchronizing sequence to base station, judge whether to meet first condition,
Or second condition, if it is satisfied, then the Type0 frame type is switched to Type3 frame type；
The BMSC judges whether to meet Article 3 after the Type0 frame type is switched to Type3 frame type
Part, if it is satisfied, then the Type3 frame type is switched to Type0 frame type.
Optionally, when the SYNC entity of the BMSC sends the end frame of synchronizing sequence to base station, judge whether satisfaction the
One condition, if it is satisfied, then the Type0 frame type is switched to Type3 frame type, comprising:
When the SYNC entity of the BMSC sends business data packet to base station, start timer；
When the SYNC entity of the BMSC sends the end frame of synchronizing sequence to base station, in default timing T, when connecing
The packet loss instruction message including service identification that the base station is sent is received, and according to the industry in the packet loss instruction message
When the same business of business mark statistics reports the number of the base station of packet loss to be more than default value K, the Type0 frame type is switched to
Type3 frame type, simultaneously closes off timer；
Wherein, the packet loss instruction message is the synchronous sequence that the base station receives that the SYNC entity of the BMSC is sent
It is sent when thering is business data packet continuously to lose in column.
Optionally, when the SYNC entity of the BMSC sends the end frame of synchronizing sequence to base station, judge whether satisfaction the
Two conditions, if it is satisfied, then the Type0 frame type is switched to Type3 frame type, comprising:
When the SYNC entity of the BMSC sends business data packet to base station, start timer；
When the SYNC entity of the BMSC sends the end frame of synchronizing sequence to base station, when the timer timing is super
When crossing preset time T, the Type0 frame type is switched to Type3 frame type, simultaneously closes off timer.
Optionally, the BMSC judges whether to meet after the Type0 frame type is switched to Type3 frame type
Third condition, if it is satisfied, then the Type3 frame type is switched to Type0 frame type, comprising:
The BMSC continuously succeeds after the Type0 frame type is switched to Type3 frame type when to the base station
When sending and preset N number of synchronizing sequence terminated with Type3, and not receiving packet loss instruction, the Type3 frame type is switched to
Type0 frame type.
Optionally, the BMSC is after being switched to Type3 frame type for the Type0 frame type, if being unsatisfactory for
Three conditions do not switch the Type3 frame type then, comprising:
The SYNC entity of the BMSC, which works as to send not successfully to the base station, presets N number of synchronizing sequence terminated with Type3
When, the BMSC does not switch over the Type3 frame type, and if having received packet loss instruction again, will be to the base station
The count value for sending the synchronizing sequence number is reset；
The BMSC, will be described when continuing successfully to preset N number of synchronizing sequence terminated with Type3 to base station transmission
Type3 frame type is switched to Type0 frame type.
Second aspect, the present invention provides a kind of transmission methods of MBMS data, comprising:
Base station receives the synchronizing sequence that the SYNC entity of broadcast/multicast service center BMSC is sent, including multiple business numbers
According to the end frame of packet and Type0 frame type；
The synchronizing sequence number that the base station is continuously lost when the business data packet in the received synchronizing sequence
When statistical value is more than preset value M, Xiang Suoshu BMSC send include service identification packet loss instruction message so that the BMSC according to
The packet loss instruction message judges whether the Type0 frame type being switched to Type3 frame type.
Optionally, the method also includes:
The base station receive the BMSC SYNC entity send synchronizing sequence, including multiple business data packets and
The end frame of Type3 frame type；
The synchronizing sequence number that the base station is continuously lost when the business data packet in the received synchronizing sequence
When statistical value is more than preset value M, Xiang Suoshu BMSC sends the packet loss instruction message including service identification, so that the BMSC is adjudicated
Whether Type3 frame type is switched over.
The third aspect, the present invention also provides a kind of broadcast/multicast service central apparatus, comprising:
Sending module, for sending synchronizing sequence to base station, the synchronizing sequence includes multiple business data packets and Type0
The end frame of frame type；
First switching module, for meeting first condition or second condition when sending the end frame of synchronizing sequence
When, the Type0 frame type is switched to Type3 frame type；
Second switching module, for after the Type0 frame type is switched to Type3 frame type, when meeting third
When condition, the Type3 frame type is switched to Type0 frame type.
Optionally, first switching module, is used for:
When sending business data packet, start timer；
When sending the end frame of synchronizing sequence, in default timing T, when receive the base station transmission includes
The packet loss instruction message of service identification, and same business is counted according to the service identification in the packet loss instruction message and is reported
When the number of the base station of packet loss is more than default value K, the Type0 frame type which is used is switched to Type3 frame class
Type simultaneously closes off timer；
Wherein, the packet loss instruction message is the synchronous sequence that the base station receives that the SYNC entity of the BMSC is sent
What the synchronizing sequence number statistical value for having business data packet continuously to lose in column was sent when being more than preset value M.
Optionally, first switching module, is used for:
When sending the end frame of multiple synchronizing sequences, when the timer timing is more than preset time T, by institute
It states Type0 frame type and is switched to Type3 frame type, simultaneously close off timer.
Optionally, second switching module, is used for:
After the Type0 frame type is switched to Type3 frame type, the base station Xiang Suoshu be successfully transmitted preset it is N number of with
The synchronizing sequence that Type3 terminates, and when not receiving the packet loss instruction that the base station is sent, the Type3 frame type is switched
To Type0 frame type.
Optionally, second switching module, is used for:
When sent not successfully to the base station preset N number of synchronizing sequence terminated with Type3 when, not to the Type3 frame
Type switches over, if having received packet loss instruction again in the process, will send the synchronizing sequence number to the base station
Count value reset；
When continuing successfully to preset N number of synchronizing sequence terminated with Type3 to base station transmission, by the Type3 frame
Type is switched to Type0 frame type.
Fourth aspect, the present invention also provides a kind of base stations, comprising:
First receiving module, the synchronization sequence that the SYNC entity for receiving broadcast/multicast service central apparatus BMSC is sent
Column, the synchronizing sequence includes the end frame of multiple business data packets and Type0 frame type；
First sending module, the synchronization for continuously being lost when the business data packet in the received synchronizing sequence
When sequence number statistical value is more than preset value M, Xiang Suoshu BMSC sends the packet loss instruction message including service identification, so that described
BMSC judges whether the Type0 frame type being switched to Type3 frame type according to the packet loss instruction message.
Optionally, the base station further include:
Second receiving module, the synchronizing sequence that the SYNC entity for receiving the BMSC is sent, including multiple business numbers
According to the end frame of packet and Type3 frame type；
Second sending module, the synchronization for continuously being lost when the business data packet in the received synchronizing sequence
When sequence number statistical value is more than preset value M, Xiang Suoshu BMSC sends the packet loss instruction message including service identification, so that described
BMSC decides whether to switch over Type3 frame type.
As shown from the above technical solution, a kind of MBMS data transmission method provided by the invention, broadcast/multicast service center
Equipment and base station, the characteristics of according to the quality of network quality and according to two kinds of frame types of Type0 and Type3, in conjunction with network-like
Condition dynamically adjusts used synchronizing sequence end frame type, to reach the balance between fault-tolerant recovery and efficiency of transmission, simultaneously
Also improve the efficiency of transmission of data.
Detailed description of the invention
Fig. 1 is the schematic diagram of prior art LTE system MBMS business face protocol stack；
Fig. 2 is the schematic diagram for the synchronizing sequence that prior art BMSC is sent to base station；
Fig. 3 A to Fig. 3 B is the form schematic diagram of prior art SYNC PDU Type0 and Type3 frame type；
Fig. 4 is the flow diagram of MBMS data transmission method provided in an embodiment of the present invention；
Fig. 5 is that Type0 the and Type3 frame type of the side BMSC provided in an embodiment of the present invention switches schematic diagram；
Fig. 6 be another embodiment of the present invention provides MBMS data transmission method flow diagram；
Fig. 7 be another embodiment of the present invention provides MBMS data transmission method flow diagram；
Fig. 8 is the business data packet that base station provided in an embodiment of the present invention detection is lost and the schematic diagram for reporting BMSC；
Fig. 9 is the structural schematic diagram of broadcast/multicast service central apparatus provided in an embodiment of the present invention；
Figure 10 A to Figure 10 B is the structural schematic diagram of base station provided in an embodiment of the present invention.
Specific embodiment
With reference to the accompanying drawing, the specific embodiment of invention is further described.Following embodiment is only used for more clear
Illustrate to Chu technical solution of the present invention, and not intended to limit the protection scope of the present invention.
Fig. 4 shows a kind of MBMS data transmission method provided in an embodiment of the present invention, comprising:
401, the SYNC entity of BMSC to base station send synchronizing sequence, the synchronizing sequence include multiple business data packets and
The end frame of Type0 frame type；
Specifically, BMSC sends multiple synchronizing sequences as shown in Fig. 2, in the synchronizing sequence in each synchronizing cycle to base station
Comprising several groups synchronizing sequence, a synchronizing sequence is one group of data for carrying identical timestamp, the knot of each synchronizing sequence
Tail transmission control frame, that is, end frame, indicates the end of synchronizing sequence.When the synchronizing sequence of BMSC transmission in need, default is used
End frame of the Type0 frame type as each synchronizing sequence.
402, when the SYNC entity of the BMSC sends the end frame of synchronizing sequence to base station, judge whether to meet first
Part or second condition, if it is satisfied, then the Type0 frame type is switched to Type3 frame type；Otherwise, then do not switch
Type0 frame type.
403, BMSC judges whether to meet Article 3 after the Type0 frame type is switched to Type3 frame type
Part, if it is satisfied, then the Type3 frame type is switched to Type0 frame type.
Above method BMSC is during sending synchronizing sequence, when the knot using Type0 frame type as each synchronizing sequence
When beam frame, by judging whether that first condition or second condition judge whether the Type0 frame type being switched to Type3 frame class
Type；Either, when the end frame using Type3 frame type as each synchronizing sequence, by judging whether that third condition judges
Whether the Type3 frame type is switched to Type0 frame type.This method is according to the quality of network quality and according to Type0
The characteristics of with two kinds of frame types of Type3, in conjunction with Network status dynamically adjust used in synchronizing sequence end frame type, it is right
Two kinds of frame types of Type0 and Type3 switch over, and to reach the balance between fault-tolerant recovery and efficiency of transmission, also improve simultaneously
The efficiency of transmission of data.
Illustrate the above method in order to clearer, the present invention is described in detail by following embodiment.
Above-mentioned steps 402 specifically include:
BMSC judges whether to meet first condition after sending multiple synchronizing sequences, if it is satisfied, then will be described
Type0 frame type is switched to Type3 frame type, specifically comprises the following steps:
4021, when the SYNC entity of BMSC sends business data packet to base station, start timer；
4022, when the SYNC entity of BMSC sends the end frame of synchronizing sequence to base station, in default timing T,
When the packet loss instruction message including service identification for receiving the base station transmission, and according to the institute in the packet loss instruction message
When stating service identification and counting same business the number of base station corresponding to packet loss is reported to be more than default value K, which is used
The Type0 frame type be switched to Type3 frame type, simultaneously close off timer；
Wherein, the packet loss instruction message is the synchronous sequence that the base station receives that the SYNC entity of the BMSC is sent
It is sent when thering is business data packet continuously to lose in column.
First condition in above-mentioned steps 402 is in default timing, when receive the base station transmission includes
The packet loss instruction message of service identification, and same business is counted according to the service identification in the packet loss instruction message and is reported
The number of base stations of packet loss is more than default value K.
Specifically, BMSC receive base station transmission the packet loss instruction message comprising service identification when, according to business mark
Knowledge classifies to the message, and counts the number of base stations that same business reports packet loss.
In another implementable way, when the SYNC entity of BMSC sends the end frame of synchronizing sequence to base station, sentence
It is disconnected whether to meet second condition, if it is satisfied, then the Type0 frame type is switched to Type3 frame type.
Specifically includes the following steps:
4023, when the SYNC entity of BMSC sends the end frame of synchronizing sequence to base station, when the timer timing
When more than preset time T, the Type0 frame type is switched to Type3 frame type, simultaneously closes off timer.
Second condition is that the SYNC entity of the BMSC sends the end frame of synchronizing sequence to base station in above-mentioned steps 402
When, when the timer timing is more than preset time T, the Type0 frame type is switched to Type3 frame type, together
When Off Timer.
In above-mentioned steps 4022 or 4023, BMSC after the Type0 frame type is switched to Type3 frame type,
Judge whether to meet third condition, if it is satisfied, then the Type3 frame type is switched to Type0 frame type, above-mentioned steps
403 specifically comprise the following steps:
4031, BMSC is after being switched to Type3 frame type for the Type0 frame type, when to the base station continuously at
Function transmission preset N number of synchronizing sequence terminated with Type3, and do not receive in the process packet loss instruction when, by the Type3 frame
Type is switched to Type0 frame type.
In the specific implementation process, above-mentioned steps 403 further include following steps:
4032, the SYNC entity of BMSC is sent not successfully to the base station and presets N number of synchronizing sequence terminated with Type3
When, the BMSC does not switch over the Type3 frame type, and if having received packet loss instruction again in the process, will
The count value for sending the synchronizing sequence to the base station is reset；
4033, BMSC is when continuing successfully to preset N number of synchronizing sequence terminated with Type3 to base station transmission, by institute
It states Type3 frame type and is switched to Type0 frame type.
Third condition is successfully transmitted default N to the base station by the Type3 frame type for BMSC in above-mentioned steps 403
A synchronizing sequence, and do not receive packet loss instruction in the process.
Fig. 5 is that Type0 the and Type3 frame type of the side BMSC provided in an embodiment of the present invention switches schematic diagram, such as Fig. 5 institute
Show, upper layer network element BMSC preferably sends Type0 frame type, is perceived by lower network element, that is, base station feedback poor in link-quality
When or upper layer network element BMSC starting timer timing be more than preset time when, upper layer network element BMSC send Type3 frame
Type after being successfully transmitted N number of synchronizing sequence by Type3 frame type, and does not receive the packet loss feedback of lower network element base station
When, then Type3 frame type is switched to Type0 frame type.
Specifically, as shown in figure 5, the side BMSC is using Type0 or Type3 frame type as end frame when sending synchronizing sequence
It sends, wherein Type0 frame type is optimum state, that is, stable state, and Type3 frame type is transitory state.It is passed when BMSC starts data
When defeated, Type0 frame type is preferably sent, the Type0 frame type is switched to Type3 frame type wherein triggering there are two types of mode,
One is the packet loss instruction message for receiving base station, indicates that link is poor there are when a large amount of continual data package dropouts, then cut Type0 frame type
Change to Type3 frame type；Another kind is timed by the timer of the side BMSC, when the timing of timer is more than default
When the time, then Type0 frame type is switched to Type3 frame type.It will as long as above two condition meets one of which
Type0 frame type is switched to Type3 frame type.The length of all data packets in synchronizing sequence is wherein carried in Type3 frame type
Information is conducive to lower network element base station and minimizes mistake under packet loss serious situation.And it sends and N number of is tied with Type3
After the synchronizing sequence of beam, if the packet loss without lower network element base station is fed back, Type3 frame type is switched to Type0 frame type.
Fig. 6 is the flow diagram of MBMS data transmission method provided in an embodiment of the present invention, as shown in fig. 6, this method
Include the following steps:
601, BMSC data transmission starts, and starts timer；
602, it runs the state of Type0 type and sends the synchronizing sequence using Type0 frame type as end frame；
603, judge whether the packet loss instruction message including service identification for receiving base station transmission within a preset time；
604, when receiving the packet loss instruction message, judge that same business reports the base station of packet loss according to packet loss instruction message
Whether number is more than default value K；
For example, the present invention is not defined above-mentioned default value.
605, when there is the packet loss instruction for reporting same business greater than K base station of default value in same period, then will
The state of operation Type0 type is switched to the state of operation Type3 type, Off Timer；
606, the state for running Type3 type, the count value for being successfully transmitted synchronizing sequence number are reset；
607, when being continuously successfully transmitted N number of synchronizing sequence terminated with Type3, then the state of Type3 type will be run
It is switched to the state of operation Type0 type, starts timer.
608, when the full N number of synchronizing sequence terminated with Type3 of failed transmission, the Type3 frame type is not switched
State resets the count value for being successfully transmitted synchronizing sequence number when receiving the packet loss instruction message of base station transmission；
609, continue successfully to continuously transmit to the base station when presetting N number of synchronizing sequence terminated with Type3, it will be described
Type3 frame type is switched to Type0 frame type.
Further include step 610 after above-mentioned steps 603 in another achievable mode:
610, do not meet when the packet loss instruction message including service identification for not receiving base station transmission or same business and report
Packet loss instruction base station data be more than preset value K condition, but the timing of timer be more than preset time T when, will described in
Type0 frame type is switched to Type3 frame type, simultaneously closes off timer.
Step 606 is continued to execute after above-mentioned 610 to step 609, until business data packet end of transmission.It is above-mentioned
Numerical value of N is the constant of default definition, is changed according to the actual situation, the application does not limit the value of N.
The above method is by dynamically adjusting the type of the SYNC synchronizing sequence end frame used according to Network status, collection
The advantage of Type3 frame type and the advantage of Type0 frame type can either control packet loss in one when continual data package dropout occurs in link
Rate makes it influence to minimize, and in turn ensures the reasonable utilization of Internet resources.
Fig. 7 shows the flow diagram of MBMS data transmission method provided in an embodiment of the present invention, as shown in fig. 7, should
Method includes the following steps:
701, base station receives the synchronizing sequence that the SYNC entity of broadcast/multicast service center BMSC is sent, including multiple industry
The end frame for the data packet and Type0 frame type of being engaged in；
702, the synchronizing sequence that the base station is continuously lost when the business data packet in the received synchronizing sequence
When number statistical value is more than preset value M (M is the positive integer more than or equal to 1), it includes losing for service identification that Xiang Suoshu BMSC, which is sent,
Packet instruction message, so that the BMSC judges whether for the Type0 frame type to be switched to according to the packet loss instruction message
Type3 frame type.
Specifically, as shown in figure 8, above-mentioned steps 702 it can be appreciated that in LTE system, lower network element base station
When eNodeB detects that the synchronizing sequence number wrapped more and continuously lost is more than M, then the packet loss including service identification is reported to indicate to disappear
Breath, the message finally issue BMSC by MBMS gateway MBMSGW transparent transmission so that BMSC to the packet loss instruction message received according to
Service identification carries out Classifying Sum, judges whether to switch Type0 frame type.
In the specific implementation process, the above method further includes unshowned step in Fig. 7:
703, base station receives the synchronizing sequence that the BMSC is sent, including multiple business data packets and Type3 frame type
End frame；
704, base station, which is worked as, detects the synchronization sequence that the business data packet in the received synchronizing sequence is continuously lost
When column number statistical value is more than preset value M (M is the positive integer more than or equal to 1), it includes service identification that Xiang Suoshu BMSC, which is sent,
Packet loss instruction message, so that the BMSC decides whether to switch over Type3 frame type.
Fig. 9 shows a kind of broadcast/multicast service central apparatus provided in an embodiment of the present invention, comprising:
Sending module 91, for base station send synchronizing sequence, the synchronizing sequence include multiple business data packets and
The end frame of Type0 frame type；
First switching module 92, for meeting first condition after the end frame for sending multiple synchronizing sequences, or
When second condition, the Type0 frame type is switched to Type3 frame type；
Second switching module 93, for after the Type0 frame type is switched to Type3 frame type, when meeting the
When three conditions, the Type3 frame type is switched to Type0 frame type.
First switching module 92, is used for:
When sending business data packet, start timer；
When sending the end frame of synchronizing sequence, in default timing T, when receive the base station transmission includes
The packet loss instruction message of service identification, and same business is counted according to the service identification in the packet loss instruction message and is reported
When the number of the base station of packet loss is more than default value K, the Type0 frame type is switched to Type3 frame type, it is fixed to simultaneously close off
When device；
Wherein, the packet loss instruction message is the synchronous sequence that the base station receives that the SYNC entity of the BMSC is sent
What the synchronizing sequence number statistical value for having business data packet continuously to lose in column was sent when being more than preset value M.
In another achievable mode, first switching module 92 is used for:
It, will be described when the timer timing is more than preset time T when sending the end frame of synchronizing sequence
Type0 frame type is switched to Type3 frame type, simultaneously closes off timer.
Second switching module 93, is used for:
After the Type0 frame type is switched to Type3 frame type, the base station Xiang Suoshu be continuously successfully transmitted preset it is N number of
The synchronizing sequence terminated with Type3, and do not receive in the process packet loss instruction when, the Type3 frame type is switched to
Type0 frame type.
In another achievable mode, second switching module 93 is used for:
When sent not successfully to the base station preset N number of synchronizing sequence terminated with Type3 when, not to the Type3 frame
Type switches over, and if having received packet loss instruction again in the process, will be successfully transmitted the counting of synchronizing sequence number
Value is reset；
When continuing successfully to preset N number of synchronizing sequence terminated with Type3 to base station transmission, by the Type3 frame
Type is switched to Type0 frame type.
Figure 10 A shows a kind of base station provided in an embodiment of the present invention, which includes: the first receiving module 11, first
Sending module 12.
First receiving module 11, the synchronization that the SYNC entity for receiving broadcast/multicast service central apparatus BMSC is sent
Sequence, the synchronizing sequence include the end frame of multiple business data packets and Type0 frame type；
First sending module 12 is continuously lost same for the business data packet in the received synchronizing sequence
When step sequence number statistical value is more than preset value M (M is the positive integer more than or equal to 1), it includes business mark that Xiang Suoshu BMSC, which is sent,
The packet loss instruction message of knowledge, so that the BMSC judges whether to cut the Type0 frame type according to the packet loss instruction message
Change to Type3 frame type.
In another implementable way, as shown in Figure 10 B, above-mentioned base station further include: the second receiving module 13, second
Sending module 14.
Second receiving module 13, the synchronizing sequence that the SYNC entity for receiving the BMSC is sent, including multiple business
The end frame of data packet and Type3 frame type；
Second sending module 14 is continuously lost same for the business data packet in the received synchronizing sequence
When step sequence number statistical value is more than preset value M (M is the positive integer more than or equal to 1), it includes business mark that Xiang Suoshu BMSC, which is sent,
The packet loss instruction message of knowledge, so that the BMSC decides whether to switch over Type3 frame type.
In specification of the invention, numerous specific details are set forth.It is to be appreciated, however, that the embodiment of the present invention can be with
It practices without these specific details.In some instances, well known method, structure and skill is not been shown in detail
Art, so as not to obscure the understanding of this specification.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme should all cover within the scope of the claims and the description of the invention.
Claims (12)
1. a kind of MBMS data transmission method characterized by comprising
The SYNC entity of broadcast/multicast service central apparatus BMSC sends synchronizing sequence to base station, and the synchronizing sequence includes more
The end frame of a business data packet and Type0 frame type；
When the SYNC entity of the BMSC sends the end frame of synchronizing sequence to base station, judge whether to meet first condition, or
Second condition, if it is satisfied, then the Type0 frame type is switched to Type3 frame type；
The BMSC judges whether to meet third condition, such as after the Type0 frame type is switched to Type3 frame type
Fruit meets, then the Type3 frame type is switched to Type0 frame type, comprising:
The BMSC is continuously successfully transmitted after the Type0 frame type is switched to Type3 frame type when to the base station
When presetting N number of synchronizing sequence terminated with Type3, and not receiving packet loss instruction, the Type3 frame type is switched to Type0
Frame type.
2. the method according to claim 1, wherein the SYNC entity of the BMSC sends synchronizing sequence to base station
End frame when, judge whether to meet first condition, if it is satisfied, then the Type0 frame type is switched to Type3 frame class
Type, comprising:
When the SYNC entity of the BMSC sends business data packet to base station, start timer；
When the SYNC entity of the BMSC sends the end frame of synchronizing sequence to base station, in default timing T, when receiving
The packet loss instruction message including service identification that the base station is sent, and according to the business mark in the packet loss instruction message
When the same business of knowledge statistics reports the number of the base station of packet loss to be more than default value K, the Type0 frame type is switched to
Type3 frame type, simultaneously closes off timer；
Wherein, the packet loss instruction message is that the base station receives in the synchronizing sequence of SYNC entity transmission of the BMSC
It is sent when thering is business data packet continuously to lose.
3. the method according to claim 1, wherein the SYNC entity of the BMSC sends synchronizing sequence to base station
End frame when, judge whether to meet second condition, if it is satisfied, then the Type0 frame type is switched to Type3 frame class
Type, comprising:
When the SYNC entity of the BMSC sends business data packet to base station, start timer；
When the SYNC entity of the BMSC sends the end frame of synchronizing sequence to base station, when the timer timing is more than pre-
If when time T, the Type0 frame type being switched to Type3 frame type, simultaneously closes off timer.
4. the method according to claim 1, wherein the BMSC is switched to by the Type0 frame type
After Type3 frame type, if being unsatisfactory for third condition, the Type3 frame type is not switched, comprising:
The SYNC entity of the BMSC when sent not successfully to the base station preset N number of synchronizing sequence terminated with Type3 when, institute
It states BMSC not switch over the Type3 frame type, and if having received packet loss instruction again, institute will be sent to the base station
The count value for stating synchronizing sequence number is reset；
The BMSC, will be described when continuing successfully to preset N number of synchronizing sequence terminated with Type3 to base station transmission
Type3 frame type is switched to Type0 frame type.
5. a kind of transmission method of MBMS data characterized by comprising
Base station receives the synchronizing sequence that the SYNC entity of broadcast/multicast service central apparatus BMSC is sent, including multiple business numbers
According to the end frame of packet and Type0 frame type；
The synchronizing sequence number statistics that the base station is continuously lost when the business data packet in the received synchronizing sequence
When value is more than preset value M, Xiang Suoshu BMSC sends the packet loss instruction message including service identification, so that the BMSC is according to
Packet loss instruction message judges whether the Type0 frame type being switched to Type3 frame type.
6. according to the method described in claim 5, it is characterized in that, the method also includes:
The base station receives the synchronizing sequence that the SYNC entity of the BMSC is sent, including multiple business data packets and Type3 frame
The end frame of type；
The synchronizing sequence number statistics that the base station is continuously lost when the business data packet in the received synchronizing sequence
When value is more than preset value M, Xiang Suoshu BMSC sends the packet loss instruction message including service identification, so that the BMSC is decided whether
Type3 frame type is switched over.
7. a kind of broadcast/multicast service central apparatus characterized by comprising
Sending module, for sending synchronizing sequence to base station, the synchronizing sequence includes multiple business data packets and Type0 frame class
The end frame of type；
First switching module, for send synchronizing sequence end frame when, when meeting first condition or second condition,
The Type0 frame type is switched to Type3 frame type；
Second switching module, for after the Type0 frame type is switched to Type3 frame type, when meeting third condition
When, the Type3 frame type is switched to Type0 frame type；
Second switching module, is used for:
After the Type0 frame type is switched to Type3 frame type, the base station Xiang Suoshu be continuously successfully transmitted preset it is N number of with
The synchronizing sequence that Type3 terminates, and when not receiving the packet loss instruction that the base station is sent, the Type3 frame type is switched
To Type0 frame type.
8. equipment according to claim 7, which is characterized in that first switching module is used for:
When sending business data packet, start timer；
When sending the end frame of synchronizing sequence, in default timing T, when receive the base station transmission includes business
The packet loss instruction message of mark, and same business is counted according to the service identification in the packet loss instruction message and reports packet loss
The number of base station when being more than default value K, the Type0 frame type which is used is switched to Type3 frame type, together
When Off Timer；
Wherein, the packet loss instruction message is the SYNC entity hair that the base station receives the broadcast/multicast service central apparatus
Transmission when the synchronizing sequence number statistical value for having business data packet continuously to lose in the synchronizing sequence sent is more than preset value M
's.
9. equipment according to claim 7, which is characterized in that first switching module is used for:
When sending business data packet to base station, start timer；
It, will be described when the timer timing is more than preset time T when sending the end frame of multiple synchronizing sequences
Type0 frame type is switched to Type3 frame type, simultaneously closes off timer.
10. equipment according to claim 9, which is characterized in that second switching module is used for:
When sent not successfully to the base station preset N number of synchronizing sequence terminated with Type3 when, not to the Type3 frame type
It switches over, if having received packet loss instruction again in the process, the meter of the synchronizing sequence number will be sent to the base station
Numerical value is reset；
When continuing successfully to preset N number of synchronizing sequence terminated with Type3 to base station transmission, by the Type3 frame type
It is switched to Type0 frame type.
11. a kind of base station characterized by comprising
First receiving module, the synchronizing sequence that the SYNC entity for receiving broadcast/multicast service central apparatus BMSC is sent, institute
State the end frame that synchronizing sequence includes multiple business data packets and Type0 frame type；
First sending module, the synchronizing sequence for continuously being lost when the business data packet in the received synchronizing sequence
When number statistical value is more than preset value M, Xiang Suoshu BMSC sends the packet loss instruction message including service identification, so that the BMSC
Judged whether the Type0 frame type being switched to Type3 frame type according to the packet loss instruction message.
12. base station according to claim 11, which is characterized in that the base station further include:
Second receiving module, the synchronizing sequence that the SYNC entity for receiving the BMSC is sent, including multiple business data packets
With the end frame of Type3 frame type；
Second sending module, the synchronizing sequence for continuously being lost when the business data packet in the received synchronizing sequence
When number statistical value is more than preset value M, Xiang Suoshu BMSC sends the packet loss instruction message including service identification, so that the BMSC
It decides whether to switch over Type3 frame type.
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| WO2018028497A1 (en) * | 2016-08-12 | 2018-02-15 | 中兴通讯股份有限公司 | Transmission method and device for multicast service |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2006114425A1 (en) * | 2005-04-28 | 2006-11-02 | Siemens Aktiengesellschaft | Method of communication on magnetic resonance system multidrop bus |
| CN101048964A (en) * | 2004-10-26 | 2007-10-03 | 诺基亚公司 | Packet loss compensation |
| KR20090088689A (en) * | 2008-02-15 | 2009-08-20 | 한양대학교 산학협력단 | Method of motion estimation by using adaptive expanded block based on frame-difference |
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| CN101048964A (en) * | 2004-10-26 | 2007-10-03 | 诺基亚公司 | Packet loss compensation |
| WO2006114425A1 (en) * | 2005-04-28 | 2006-11-02 | Siemens Aktiengesellschaft | Method of communication on magnetic resonance system multidrop bus |
| KR20090088689A (en) * | 2008-02-15 | 2009-08-20 | 한양대학교 산학협력단 | Method of motion estimation by using adaptive expanded block based on frame-difference |
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