CN106856457B - A kind of data transmission method, sending device and reception device - Google Patents
A kind of data transmission method, sending device and reception device Download PDFInfo
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- CN106856457B CN106856457B CN201510906934.6A CN201510906934A CN106856457B CN 106856457 B CN106856457 B CN 106856457B CN 201510906934 A CN201510906934 A CN 201510906934A CN 106856457 B CN106856457 B CN 106856457B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/10—Flow control; Congestion control
- H04L47/19—Flow control; Congestion control at layers above the network layer
- H04L47/193—Flow control; Congestion control at layers above the network layer at the transport layer, e.g. TCP related
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/10—Flow control; Congestion control
- H04L47/23—Bit dropping
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/10—Flow control; Congestion control
- H04L47/24—Traffic characterised by specific attributes, e.g. priority or QoS
- H04L47/2466—Traffic characterised by specific attributes, e.g. priority or QoS using signalling traffic
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The application provides a kind of data transmission method, sending device and reception device, facilitates the deadline for reducing delay and task that Retransmission timeout generates.This method comprises: transmitting terminal obtains the first message in data flow, first message is the message that first identifier is added in the second message, it is the message in N number of message that the first identifier, which is used to identify second message, N number of message is that the data flow completes N number of message before transmission, and N is greater than 0 and is less than the message amount of the data flow；First message is sent to receiving end by the transmitting terminal.Receiving end receives the first message from transmitting terminal, and the receiving end is handled first message according to message transmissions strategy, and the message transmissions strategy includes the processing mode used to first message.
Description
Technical field
The present invention relates to field of communication technology more particularly to a kind of data transmission methods, sending device and reception device.
Background technique
Transmission control protocol (Transmission Control Protocol, TCP) is a kind of connection-oriented, reliable
, transport layer communication protocol based on byte stream.During TCP transmission, when message loss among TCP flow, subsequent report
The transmission of text can trigger Fast retransmission, and transmitting terminal is enable to retransmit the message of loss in time.
If lose message be located at TCP flow finally, due to without subsequent message triggering Fast retransmission, can only wait super
When timer (Retransmission Timeout, RTO) trigger retransmit.RTO is one kind of TCP operation timer, in order to anti-
Only message loss, as soon as start retransmission timer when TCP transmission message.But timer expiry Time Dependent is when round-trip
Prolong (round trip time, RTT), this will lead to Retransmission timeout and generates larger delay, extend the deadline of task, drop
Low user experience.
Summary of the invention
The embodiment of the present invention provides a kind of data transmission method, sending device and reception device, helps to reduce time-out weight
Pass the deadline of the delay and task that generate.
First aspect of the embodiment of the present invention provides a kind of data transmission method, comprising:
Transmitting terminal obtains the first message in data flow, and first message is to be added to first identifier in the second message
Message, the first identifier be used for identify second message be N number of message in message, N number of message be the number
N number of message before transmission is completed according to stream, N is greater than 0 and is less than the message amount of the data flow；The transmitting terminal is by described first
Message is sent to receiving end.
In the embodiment of the present invention, by obtaining the first message in data flow, the first message is to be added in the second message
The message of first identifier, it is N number of message before data flow completion transmission that the first identifier, which is used to identify first message, and
First message is sent to receiving end, therefore, transmitting terminal is when sending data flow, before capable of completing transmission to data flow
N number of message is identified.
With reference to first aspect, in the first possible implementation of the first aspect, the transmitting terminal obtains data flow
In the first message include:
It is described N number of to determine that second message belongs to for the second identifier that the transmitting terminal is carried according to second message
Message, the second identifier is for identifying position of second message in the data flow；The transmitting terminal is described
The first identifier is added in two messages, obtains first message.
With reference to first aspect or the first possible implementation of first aspect, second in first aspect are possible
Implementation in, the first identifier is carried on the differentiated Services code point dscp field of first message；Or described
One mark is carried on the option number field of first message.
In the possible implementation of second with reference to first aspect, in the third possible implementation of first aspect
In, the first identifier can be the mark on the 5th of dscp field.
In the possible implementation of second with reference to first aspect, in the 4th kind of possible implementation of first aspect
In, the first identifier can be the predetermined number in option number field.
Second aspect of the embodiment of the present invention provides a kind of data transmission method, comprising:
Receiving end receives the first message from transmitting terminal, and first message is that the first mark is added in the second message
The message of knowledge, it is the message in N number of message that the first identifier, which is used to identify second message, and N number of message is described
Data flow belonging to second message completes N number of message before transmission, and N is greater than 0 and is less than the message amount of the data flow；It is described
Receiving end is handled first message according to message transmissions strategy, and the message transmissions strategy includes to described first
The processing mode that message uses.
In the embodiment of the present invention, receiving end is after receiving the first message added with first identifier from transmitting terminal, root
According to the processing mode used in message transmissions strategy to first message, first message is handled.As it can be seen that receiving
End processing carries the processing mode of the message of first identifier, institute different from the processing mode for the message for not carrying first identifier
With such processing mode is more flexible, and can satisfy receiving end reduces the packet loss for N number of message that data flow is completed before transmission
Requirement, and then reduce as data flow complete transmission before N number of message loss caused by Retransmission timeout generation, shorten appoint
It is engaged in the deadline.
In conjunction with second aspect, in the first possible implementation of the second aspect, the receiving end is passed according to message
Defeated strategy, carrying out processing to first message includes:
After the corresponding message queue of the data flow received is more than first threshold, preferential abandon is connect for the receiving end
What is received does not carry the message of the first identifier.In the embodiment of the present invention, receiving end is in the corresponding report of data flow received
When literary queue is more than first threshold, such as: when the network equipment due to congestion or carries out current limliting to user, when needing dropping packets,
It is preferential to abandon the message for not carrying the first identifier, to reduce the N before the data flow completion transmission for carrying the first identifier
The packet loss of a message.
In conjunction with the first possible implementation of second aspect, in second of possible implementation of second aspect
In, the receiving end preferentially abandons the message for not carrying the first identifier received and includes:
The receiving end obtains the first parameter, the corresponding relationship includes institute according to the first identifier and corresponding relationship
First identifier and first parameter are stated, first parameter includes second threshold and drop probability, and the drop probability is used for
It indicates to execute the percentage that dropping packets operate；The receiving end is more than in the corresponding message queue of the data flow received
After the second threshold, abandoned according to message of the drop probability to the carrying first identifier received.This hair
In bright embodiment, compared to the message for not carrying first identifier, the first message of first identifier is carried, has higher second
Threshold value and lower drop probability, to reduce the packet loss of the first message.
In conjunction with second aspect, in the third possible implementation of the second aspect, the receiving end is passed according to message
Defeated strategy, carrying out processing to first message includes:
First message is replicated in the receiving end, obtains M first messages, and the M is to be greater than or wait
In 2 integer；The M first messages are sent to wireless terminal by the receiving end.In the embodiment of the present invention, pass through by
M first messages are sent to wireless terminal, reduce the packet loss of the first message, and, in a stream described the
When the message transmitted before one message is lost, if M the first message transmissions successes, receive wirelessly in receiving end
After the confirmation message that terminal returns, receiving end can be triggered by Fast retransmission and retransmit the message lost, avoid time-out weight
The generation of biography.
In conjunction with the third possible implementation of second aspect, in the 4th kind of possible implementation of second aspect
In, the M is the numerical value determined according to the default value of message number of copies；Or the M is according to access quantity and/or described to connect
The numerical value that link-quality between receiving end and the wireless terminal determines, the access quantity is to have already accessed to the receiving end
Wireless terminal quantity.
In conjunction with the third possible implementation of second aspect, in the 5th kind of possible implementation of second aspect
In, the N is greater than 1, the method also includes:
The receiving end receives the third message from the transmitting terminal, and the third message is added in the 4th message
The message of first identifier, it is the message in N number of message, N number of report that the first identifier, which is used to identify the 4th message,
Text is that data flow belonging to second message completes N number of message before transmission；The receiving end is sent to the wireless terminal
The third message.In the embodiment of the present invention, receiving end is answered in the message to the carrying first identifier received for the first time
After system, the message of subsequently received carrying first identifier is not replicated, so mitigate receiving end and wireless terminal it
Between link burden.
In conjunction with second aspect to second aspect the 5th kind of possible implementation in any possible implementation,
In six kinds of possible implementations of stream of second aspect, the first identifier is carried on the Differentiated Services of first message
Code point dscp field；Or the first identifier is carried on the option number field of first message.
In the 6th kind of possible implementation in conjunction with second aspect, in the 7th kind of possible implementation of second aspect
In, the first identifier can be the mark on the 5th of dscp field.
In the 6th kind of possible implementation in conjunction with second aspect, in the 7th kind of possible implementation of second aspect
In, the first identifier can be the predetermined number in option number field.
The third aspect of the embodiment of the present invention provides a kind of sending device, comprising:
Obtaining unit, for obtaining the first message in data flow, first message is added in the second message
The message of first identifier, it is the message in N number of message, N number of message that the first identifier, which is used to identify second message,
N number of message before transmission is completed for the data flow, N is greater than 0 and is less than the message amount of the data flow；
Transmission unit, for first message to be sent to reception device.
In conjunction with the third aspect, in the first possible implementation of the third aspect, the obtaining unit is specifically used for:
According to the second identifier that second message carries, determine that second message belongs to N number of message, described the
Two marks are for identifying position of second message in the data flow；
The first identifier is added in second message, obtains first message.
Fourth aspect of the embodiment of the present invention provides a kind of reception device, comprising:
First receiving unit, for receiving the first message from transmitting terminal, first message is in the second message
It is added to the message of first identifier, it is the message in N number of message, the N that the first identifier, which is used to identify second message,
A message is that data flow belonging to second message completes N number of message before transmission, and N is greater than 0 and is less than the data flow
Message amount；
Processing unit, for handling first message, the message transmissions strategy according to message transmissions strategy
Including the processing mode used to first message.
In conjunction with fourth aspect, in the first possible implementation of the fourth aspect, the processing unit is specifically used for:
After the corresponding message queue of the data flow received is more than first threshold, what preferential discarding received is not taken
Message with the first identifier.
In conjunction with the first possible implementation of fourth aspect, in second of possible implementation of fourth aspect
In, the processing unit is specifically used for:
According to the first identifier and corresponding relationship, the first parameter is obtained, the corresponding relationship includes the first identifier
With first parameter, first parameter includes second threshold and drop probability, and the drop probability is lost for indicating to execute
Abandon the percentage of message operation；
After the corresponding message queue of the data flow received is more than the second threshold, according to the drop probability
The message for not carrying the first identifier received is abandoned.
In conjunction with fourth aspect, in the third possible implementation of the fourth aspect, the processing unit is specifically used for:
First message is replicated, M first messages are obtained, the M is the integer more than or equal to 2；
The M first messages are sent to wireless terminal.
In conjunction with the third possible implementation of fourth aspect, in the 4th kind of possible implementation of fourth aspect
In, the M is the numerical value determined according to the default value of message number of copies；Or
The M is the number determined according to the link-quality between access quantity and/or the receiving end and the wireless terminal
Value, the access quantity is to have already accessed to the wireless terminal quantity of the receiving end.
In conjunction with the third possible implementation of fourth aspect, in the 5th kind of possible implementation of fourth aspect
In, the N is greater than 1, described device further include:
Second receiving unit, for receiving the third message from the transmitting terminal, the third message is in the 4th report
The message of first identifier is added in text, it is the message in N number of message, institute that the first identifier, which is used to identify the 4th message,
Stating N number of message is that data flow belonging to second message completes N number of message before transmission；
Transmission unit, for sending the third message to the wireless terminal.
The 5th aspect of the embodiment of the present invention provides a kind of transmitting terminal, comprising: processor, transmitter and communication bus；Its
In, the processor and the transmitter complete mutual communication by the communication bus；
The processor is used for:
The first message in data flow is obtained, first message is the report that first identifier is added in the second message
Text, it is the message in N number of message that the first identifier, which is used to identify second message, and N number of message is the data flow
N number of message before completing transmission, N are greater than 0 and are less than the message amount of the data flow；
The transmitter is used for:
First message is sent to receiving end.
In conjunction with the 5th aspect, in the first possible embodiment of the 5th aspect, the processor is specifically used for:
According to the second identifier that second message carries, determine that second message belongs to N number of message, described the
Two marks are for identifying position of second message in the data flow；
The first identifier is added in second message, obtains first message.
The 6th aspect of the embodiment of the present invention provides a kind of receiving end, comprising: processor, receiver, transmitter and communication
Bus；Wherein, the receiver, the transmitter and the processor complete mutual communication by the communication bus；
The receiver is used for:
The first message from transmitting terminal is received, first message is the report that first identifier is added in the second message
Text, it is the message in N number of message that the first identifier, which is used to identify second message, and N number of message is second report
Data flow belonging to text completes N number of message before transmission, and N is greater than 0 and is less than the message amount of the data flow；The processor
For:
According to message transmissions strategy, first message is handled, the message transmissions strategy includes to described
The processing mode that one message uses.
In conjunction with the 6th aspect, in the first possible embodiment of the 6th aspect, the processor is specifically used for:
After the corresponding message queue of the data flow received is more than first threshold, what preferential discarding received is not taken
Message with the first identifier.
In conjunction with the first possible embodiment of the 6th aspect, in second of possible embodiment of the 6th aspect
In, the processor is specifically used for:
According to the first identifier and corresponding relationship, the first parameter is obtained, the corresponding relationship includes the first identifier
With first parameter, first parameter includes second threshold and drop probability, and the drop probability is lost for indicating to execute
Abandon the percentage of message operation；
After the corresponding message queue of the data flow received is more than the second threshold, according to the drop probability
The message for not carrying the first identifier received is abandoned.
In conjunction with the 6th aspect, in the third possible embodiment of the 6th aspect, the processor is specifically used for:
First message is replicated, M first messages are obtained, the M is the integer more than or equal to 2；
The transmitter is used for:
The M first messages are sent to wireless terminal.
In conjunction with the third possible embodiment of the 6th aspect, in the 4th kind of possible embodiment of the 6th aspect
In, the M is the numerical value determined according to the default value of message number of copies；Or
The M is the number determined according to the link-quality between access quantity and/or the receiving end and the wireless terminal
Value, the access quantity is to have already accessed to the wireless terminal quantity of the receiving end.
In conjunction with the third possible embodiment of the 6th aspect, in the 5th kind of possible embodiment of the 6th aspect
In, the N is greater than 1, and the receiver is specifically used for:
For receiving the third message from the transmitting terminal, the third message is to be added to first in the 4th message
The message of mark, it is the message in N number of message that the first identifier, which is used to identify the 4th message, and N number of message is institute
It states data flow belonging to the second message and completes N number of message before transmission；
The transmitter is specifically used for:
The third message is sent to the wireless terminal.
The one or more technical solutions provided in the embodiment of the present invention, have at least the following technical effects or advantages:
In the embodiment of the present invention, transmitting terminal is in the second message by obtaining the first message in data flow, the first message
It is added to the message of first identifier, and first message is sent to receiving end, the first message is before data flow completes transmission
N number of message in one；Receiving end is after receiving the first message, according to including to described first in message transmissions strategy
The processing mode that message uses, handles first message, so that such processing mode is more flexible, can satisfy
Receiving end reduces the requirement that data flow completes the packet loss of N number of message before transmission, and then reduces since data flow is completed to transmit
The loss of preceding N number of message, the i.e. generation of Retransmission timeout caused by the last message loss of data flow, when shortening task completion
Between.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly introduced.
Fig. 1 is a kind of schematic diagram of data center；
Fig. 2 is a kind of schematic diagram of Metropolitan Area Network (MAN)；
Fig. 3 is the method flow diagram that sending device transmits data in the embodiment of the present invention；
Fig. 4 is the schematic diagram for causing Retransmission timeout to generate due to message loss in the embodiment of the present invention；
Fig. 5 is the schematic diagram that the first implementation of first identifier is arranged in the embodiment of the present invention；
Fig. 6 is the schematic diagram that second of implementation of first identifier is arranged in the embodiment of the present invention；
Fig. 7 is the method flow diagram that reception device transmits data in the embodiment of the present invention；
Fig. 8 is to carry transmission flow schematic diagram of the message of first identifier in data center in the embodiment of the present invention；
Fig. 9 is reception device in the embodiment of the present invention to the side of second of processing mode of the message for carrying first identifier
Method flow chart；
Figure 10 is to carry transmission flow schematic diagram of the message of first identifier in Metropolitan Area Network (MAN) in the embodiment of the present invention；
Figure 11 is the functional block diagram of sending device in the embodiment of the present invention；
Figure 12 is the hardware structural diagram of transmitting terminal in the embodiment of the present invention；
Figure 13 is the functional block diagram of reception device in the embodiment of the present invention；
Figure 14 is the hardware structural diagram of receiving end in the embodiment of the present invention.
Specific embodiment
The embodiment of the present invention provides a kind of data transmission method, sending device and reception device, to solve the prior art
Present in, when loss message occur TCP flow it is last when, will lead to the generation of Retransmission timeout, and then cause task complete
The technical issues of extending at the time.
The terms "and/or", only a kind of incidence relation for describing affiliated partner, indicates that there may be three kinds of passes
System, for example, A and/or B, can indicate: individualism A exists simultaneously A and B, these three situations of individualism B.In addition, herein
Middle character "/" typicallys represent the relationship that forward-backward correlation object is a kind of "or".
Referring to FIG. 1, Fig. 1 is a kind of schematic diagram of data center.The data center includes multiple servers, rack
(top of Rack, Tor) interchanger.The data center further includes core switch and convergence switch.In data center network
In, Tor interchanger causes TCP is poly- to broadcast (incast) problem due to many-one communication.TCP incast problem refers to data center
In network, the number with the server for participating in data transmission increases, and the data traffic of generation can make the buffer area of Tor interchanger
It overflows.Therefore, the strategy that packet loss can be generated at Tor interchanger, and is used when packet loss is random drop, that is to say, that data
N number of message that stream completes before transmission is possible to be abandoned by Tor interchanger, so as to cause the generation of Retransmission timeout.
In general, the core switch of data center, the uplink port of convergence switch and Tor interchanger, such as Tor
The port that interchanger is communicated with convergence switch will not generate congestion.If generating congestion, can also be used in the embodiment of the present invention
The technical solution of offer solves.
Referring to FIG. 2, Fig. 2 is a kind of schematic diagram of Metropolitan Area Network (MAN).In a network, partial network devices can be carried out according to user
Current limliting leads to message loss, as wideband network gateway controls equipment (Broadband Network Gateway, BNG).Due to
BNG can carry out current limliting according to user, if the rate for receiving message is far longer than the available bandwidth of user, can produce at BNG
Raw packet loss, and the strategy used when packet loss is random drop, that is to say, that N number of message that data flow completes before transmission is possible to
It is abandoned by BNG, so as to cause the generation of Retransmission timeout.In addition, for the wireless access node (Wireless in home network
Fidelity Access Point, WIFI AP), such as the home gateway (home gateway, HGW) in Fig. 2, ONT Optical Network Terminal
(Optical network terminal, ONT), cable modem (Cable Modem, CM).Since WIFI AP is sent
The destination of message is the wireless terminal that network is accessed by WIFI, and Radio Link feature is also possible to lead to more packet loss,
And then data flow is caused to complete N number of message loss before transmission, and lead to the generation of Retransmission timeout.Below to the embodiment of the present invention
The data transmission method of offer is described in detail.
Illustrate the method that transmitting terminal carries out data transmission first.In the embodiment of the present invention, transmitting terminal can be the clothes in Fig. 1
Business device 1；Receiving end can be the Tor interchanger in Fig. 1, or the BNG in Fig. 2.As shown in figure 3, this method include with
Lower content:
31, transmitting terminal obtains the first message in data flow, and first message is to be added to first in the second message
The message of mark, it is the message in N number of message that the first identifier, which is used to identify second message, and N number of message is institute
It states data flow and completes N number of message before transmission, N is greater than 0 and is less than the message amount of the data flow.
32, first message is sent to receiving end by the transmitting terminal.
Wherein, in 31, the second identifier that transmitting terminal can be carried according to second message determines second message
Belong to N number of message, the second identifier is for identifying position of second message in the data flow.The present invention is real
It applies in example, the field serial number that second identifier can carry for message, field serial number is used to identify second message in a stream
Position.For example, if the field serial number seq=92 carried in message, indicates the first character of data portion in the message
The number of section is 92.The numerical value for the field serial number that then transmitting terminal can be carried according to the message in data flow, determines the second message
Belong to data flow and completes N number of message before transmission.Then, transmitting terminal adds first identifier in the second message, obtains described the
One message.
Wherein, in 31, transmitting terminal can be according to the sequencing of the message received, second report that will be received
Text is inserted into the queue belonging to it, determines that affiliated second message belongs to N number of message according to the sequence of queue.In this way, sending
End without each message for receiving is carried out second identifier identification and whether be N number of message judgement, facilitate further
Reduce expense and saves the time.
About the value of N, a kind of possible situation are as follows: the specific value of N can be preset value, and the value that N can be set is
The arbitrary value of message amount greater than 0 and less than the data flow.Alternatively possible situation are as follows: the specific value of N is according to touching
Hair Retransmission timeout confirmation character (Acknowledgement, ack) number is configured.For example, as shown in figure 4, sending
It holds when sending data flow to receiving end, when the field serial number seq=100 of the message among data flow loses, subsequent packet seq
After=120, seq=135 and seq=141 are transmitted, 3 ack information that transmitting terminal receives receiving end transmission are ack=100, then
Transmitting terminal can be triggered by Fast retransmission, retransmit message seq=100.That is, transmitting terminal receives receiving end transmission
3 ack information when, can just trigger Fast retransmission, then in a data flow, when the 4th packet loss of inverse of data flow
When, if the success of subsequent 3 message transmissions, it will be able to Fast retransmission is triggered, and data flow completes last 3 messages before transmission
When loss, no subsequent packet can trigger Fast retransmission, and therefore, the value of N can be 3.
It is illustrated below to how transmitting terminal adds first identifier in the second message.
A kind of possible implementation are as follows: first identifier is carried on to the differentiated Services code point of message
(Differentiated Services Code point, DSCP) field.As shown in figure 5, with internet protocol version 4
For (Internet Protocol version 4, IPv4) message, the 5th in dscp field is set as marking by transmitting terminal
Know 1, then when the 5th of the dscp field of message is mark 1, indicates that the message is completed for data flow in N number of message before transmission
A message.
Specifically, in dscp field in defined grouping, guarantee forwarding (Assured Forwarding, AF) hop-by-hop
Behavior (per-hop behavior, PHB) grouping and acceleration forward the 5th of (Expedited Forwarding, EF) PHB grouping
Position is 0, and the coding as AF recommends is as shown in table 1.Table 1 shows three loss priorities of each class in AF, and with it is every
The recommendation DSCP of a priority associative.Wherein, each DSCP is indicated with its AF value, decimal value and binary value respectively.This
In the method that inventive embodiments provide, the 5th setting in dscp field identifies 1, is that a data flow is complete to be used to indicate message
At a message in N number of message before transmission.
Table 1
Alternatively possible implementation are as follows: the first identifier is carried on to the option number word of first message
Section.By taking IPv4 message as an example, transmitting terminal can set predetermined for the option number field in the option of the heading of message
Number.When being then predetermined number in the option number field of message, indicate in N number of message before the message data stream completes transmission
A message.
It specifically, include three domains: 1 as shown in fig. 6, IPV4Options field is indicated with a byte
Copied flag (copy flag), 2 option class (option category) and 5 option number (option number).
Then in order to identify the first message, one of which is possible to extend the predetermined number decimal system table as shown in fig. 6, option number field
27 are shown as, is represented in binary as 11011.
It should be noted that the predetermined number for being used as first identifier should be different from other numbers being defined at present
Word, such as: number 27 is the number not being defined, and can define predetermined number is 27.
Next, the data transmission method to reception device is illustrated, as shown in Figure 7, which comprises
71, receiving end receives the first message from transmitting terminal, and first message is that the is added in the second message
The message of one mark, it is the message in N number of message that the first identifier, which is used to identify second message, and N number of message is
Data flow belonging to second message completes N number of message before transmission, and N is greater than 0 and is less than the message amount of the data flow.
In the embodiment of the present invention, transmitting terminal will be added to first identifier in a data flow by executing method shown in Fig. 3
The first message be sent to receiving end.Therefore, receiving end can receive the first message in the data flow of transmitting terminal transmission.
72, the receiving end is handled first message according to message transmissions strategy, the message transmissions strategy
Including the processing mode used to first message.It, may to following two in message transmissions strategy in the embodiment of the present invention
Processing mode be illustrated.
The first processing mode, receiving end generate congestion or carry out current limliting to user, when needing dropping packets, pass through knowledge
First identifier in other message, it is preferential to abandon the message for not carrying the first identifier.
Second of processing mode, in home network at WIFI AP, by identifying first identifier, to carrying first identifier
The first message replicated, and send multiple first messages.
Firstly, illustrating the first processing mode.In the first processing mode, receiving end can be the Tor exchange in Fig. 1
Machine, or the BNG in Fig. 2.71 include: that the receiving end is more than in the corresponding message queue of the data flow received
After first threshold, the message for not carrying the first identifier received is preferentially abandoned.
Wherein, first threshold refers to that receiving end is preparing the message amount in the message queue before dropping packets.Work as reception
When the length of the message queue corresponding with data flow cached in end reaches first threshold, receiving end begins to dropping packets.Institute
Stating first threshold can be the length of preset message queue.
A kind of possible implementation are as follows: the receiving end determines whether message is message to be discarded according to drop probability；
Wherein, the drop probability refers to the percentage for executing dropping packets operation.In the embodiment of the present invention, the size of drop probability with
The length of the message queue is directly proportional；If the message to be discarded is the first message for carrying first identifier, do not abandon
First message；If the message to be discarded does not carry first identifier, the message is abandoned.
In practical applications, it can determine that message is using random early (random early drop, RED) algorithm that abandons
No is message to be discarded, can also use other algorithms.By taking RED algorithm as an example, the message queue cached in the receiving end is reached
When first threshold, begin to the random determination of drop probability message to be discarded, with the increase of queue length, packet loss
Probability is consequently increased.Also, when message is determined as message to be discarded through RED algorithm, if the message to be discarded does not carry
First identifier then abandons the message；If the message to be discarded carries first identifier, the message is not abandoned.
Alternatively possible implementation are as follows: the receiving end obtains first according to the first identifier and corresponding relationship
Parameter, the corresponding relationship include the first identifier and first parameter, and first parameter includes second threshold and loses
Probability is abandoned, the drop probability is used for the percentage for indicating to execute dropping packets operation；The receiving end is described in receive
The corresponding message queue of data flow be more than the second threshold after, according to the drop probability described the carrying received first
The message of mark is abandoned.The second threshold is the length of preset queue, such as the minimum threshold of queue length.Institute
Stating second threshold can be identical as the first threshold, can also be different from the first threshold.
Wherein, first identifier refers to that the mark that the dscp field of the first message is arranged in, the first parameter refer to first identifier
Corresponding packet loss parameter, first parameter include second threshold and drop probability, and second threshold is receiving end preparation pair
Carry first identifier message abandoned before message queue in message amount, drop probability for indicate execute discarding
The percentage of message operation.
In practical applications, (Weighted Random Early can be detected using Weighted random in advance
Detection, WRED) algorithm abandons the message for carrying first identifier, when needing dropping packets, calculated by WRED
Message is divided into corresponding classification according to service quality (Quality of Service, QoS) priority by method.Each classification and one
Kind drop policy is corresponding, and each drop policy has respective packet loss parameter, comprising: second threshold and drop probability.It receives
End abandons the message of the category according to the corresponding packet loss parameter of each classification.
In the embodiment of the present invention, when being classified by wred algorithm to message, due to the dscp field of first message
Dscp field, then can be mapped to the QoS priority of the first message by the 5th upper setting mark 1, then in a data flow,
Carry the high grade of QoS priority of message of the QoS priority of the message of first identifier than not carrying first identifier.It lifts
For example, in a data flow, the dscp field for not carrying the message of first identifier is " 001100 ", carries first identifier
The dscp field of message is " 001101 ", then the QoS priority of the message of first identifier is carried, than not carrying first identifier
The high grade of the QoS priority of message.And the message low compared to priority, the high message of priority correspond to higher
Two threshold values and lower drop probability.It is thereby achieved that preferential abandon the message for not carrying the first identifier.
Explanation of giving one example below carries transmission process of the message of first identifier in data center, please refers to figure
8, including the following contents:
81, server 1 is completed to be respectively set first in N number of message before transmission in the data flow for being sent to Tor interchanger
Mark, and N number of message is sent to Tor interchanger.
82, Tor interchangers identify the message for carrying first identifier after receiving the message in the data flow,
It is preferential to abandon the message for not carrying first identifier when Tor interchanger dropping packets.
The message for carrying first identifier is sent to server 2 by 83, Tor interchangers.
Next, second of processing mode of explanation.As shown in figure 9, second of processing mode includes:
91, first message is replicated in the receiving end, obtains M first messages, the M be greater than or
Integer equal to 2.
92, the M first messages are sent to wireless terminal by the receiving end.
In second of processing mode, receiving end is WIFI AP, such as the home gateway HGW in Fig. 2, ONT Optical Network Terminal
ONT, cable modem CM, in practical applications, receiving end can also be the network equipment of other built-in WIFI AP.
In second of processing mode, when wireless terminal is using WIFI access network, since Radio Link feature may
Lead to higher packet loss, therefore, in order to reduce by WIF interface transmit when described in the first message packet loss, in WIFI AP
After identifying the first message for carrying first identifier, the first message is replicated, and by sending M first messages
Mode reduce by the packet loss of first message.
In the embodiment of the present application, a kind of possible embodiment are as follows: if including multiple carrying the in a data flow
The message of one mark, then receiving end can replicate each message for carrying first identifier, to reduce packet loss.
In the embodiment of the present application, the M can according to message number of copies default value determine numerical value.The M
The numerical value that the link-quality that can be accessed according between quantity and/or the receiving end and the wireless terminal determines, it is described to connect
Entering quantity is to have already accessed to the wireless terminal quantity of the receiving end.
Specifically, M value can be inversely proportional with link-quality, directly proportional to wireless terminal quantity, i.e., link-quality is better, M
It is worth smaller, wireless terminal quantity is bigger, and M value is bigger.In practical applications, M value may be and link-quality and wireless terminal
Other relevant functional relations of multiple factors such as quantity.
Alternatively possible embodiment is that receiving end can carry first in the data flow received
First message of first identifier is replicated, not to the message for carrying first identifier in the subsequently received data flow
It is replicated, to reduce the quantity for the message that receiving end needs to send, and then mitigates the link between receiving end and wireless terminal
Burden.
Then after 92, this method further include: the receiving end receives the third message from the transmitting terminal, and described the
Three messages are the messages that first identifier is added in the 4th message, and the first identifier is N for identifying the 4th message
Message in a message, N number of message are that data flow belonging to second message completes N number of message before transmission；It is described
Receiving end sends the third message to the wireless terminal.That is, receiving end is to the first report for carrying first identifier
After text is replicated, the subsequently received third message for carrying first identifier will not be replicated.
It is provided according in Transmission Control Protocol, when receiving end end receives 3 ack of wireless terminal transmission, receiving end can be triggered and passed through
Fast retransmission retransmits the message lost.If before the first message exist lose message, due to the M be greater than or
Integer equal to 2, receiving end are sent to wirelessly by M first messages for successfully obtaining first message and duplication
Terminal, and receive wireless terminal and return to the corresponding M ack of the first message a corresponding ack and M first messages,
Receiving end can be triggered, the message lost is retransmitted by Fast retransmission, and then avoid the generation of Retransmission timeout, meanwhile, subtract
Link between light receiving end and wireless terminal is born.
In the embodiment of the present invention, receiving end WIFI AP can be reported when sending M first messages in transmission first
M first messages of duplication are sent after text, the timer-delay regular hour can also be passed through according to certain algorithm
Send M first messages.
It should be noted that since the destination of the message sent of the WIFI AP in the embodiment of the present invention is to be connect by WIF
The wireless terminal of port transmission therefore can be by way of sending M first messages, and the transmission for improving the first message can
By property, packet loss is reduced, and does not consume the bandwidth of other network equipments.
Explanation of giving one example below carries transmission process of the message of first identifier in Metropolitan Area Network (MAN), please refers to figure
10, including the following contents:
101, server 1 is completed to be respectively set first in N number of message before transmission in the data flow for being sent to wireless terminal
Mark, and N number of message is sent to BNG.
102, BNG after receiving the message in the data flow, identifies the message for carrying first identifier, needs in BNG
It is preferential to abandon the message for not carrying first identifier when wanting dropping packets.
The message for carrying first identifier is sent to WIFI AP by 103, BNG.
104, WIFI AP identify the message for carrying first identifier after receiving the message in the data flow, and right
The message for carrying first identifier is replicated.
The copy packet of the message and the message is sent to wireless terminal by 105, WIFI AP.
Based on the same inventive concept, the embodiment of the present invention also provides a kind of sending device, as shown in figure 11, comprising:
Obtaining unit 111, for obtaining the first message in data flow, first message is added in the second message
The message of first identifier, it is the message in N number of message, N number of report that the first identifier, which is used to identify second message,
Text is that the data flow completes N number of message before transmission, and N is greater than 0 and is less than the message amount of the data flow；
Transmission unit 112, for first message to be sent to reception device.
Optionally, the obtaining unit 111 is specifically used for:
According to the second identifier that second message carries, determine that second message belongs to N number of message, described the
Two marks are for identifying position of second message in the data flow；
The first identifier is added in second message, obtains first message.
Various change mode and specific example in the method for transmission data in 3 embodiment of earlier figures are equally applicable to this
The sending device of embodiment, by the detailed description of the aforementioned method to data transmission, those skilled in the art can be clear
The implementation method of sending device in the present embodiment is known, so this will not be detailed here in order to illustrate the succinct of book.
Based on the same inventive concept, the embodiment of the present invention also provides a kind of receiving end, as shown in figure 12, comprising: processor
602, transmitter 601 and communication bus 600；Wherein, the processor 602 and the transmitter 601 pass through the communication bus
600 complete mutual communication；
The processor 602 is used for:
The first message in data flow is obtained, first message is the report that first identifier is added in the second message
Text, it is the message in N number of message that the first identifier, which is used to identify second message, and N number of message is the data flow
N number of message before completing transmission, N are greater than 0 and are less than the message amount of the data flow；
The transmitter 601 is used for:
First message is sent to receiving end.
Optionally, the processor 602 is specifically used for:
According to the second identifier that second message carries, determine that second message belongs to N number of message, described the
Two marks are for identifying position of second message in the data flow；
The first identifier is added in second message, obtains first message.
Further, in Figure 12, communication bus 600 may include the bus and bridge of any number of interconnection, communication bus
600 will include the one or more processors represented by processor 602 and the various circuits of memory that memory 604 represents connect
It is connected together.Communication bus 600 can also be by the various other of such as peripheral equipment, voltage-stablizer and management circuit or the like
Together, these are all it is known in the art for circuit connection, and therefore, it will not be further described herein.Bus connects
Mouth 605 provides interface between communication bus 600 and transmitter 601.Transmitter 601 can be transceiver, provide for passing
The unit communicated on defeated medium with various other devices.
Processor 602 is responsible for management communication bus 600 and common processing, and memory 604 can be used to store place
Manage the used data when executing operation of device 602.
Various change mode and specific example in the method for transmission data in 3 embodiment of earlier figures are equally applicable to this
The transmitting terminal of embodiment, by the detailed description of the aforementioned method to data transmission, those skilled in the art can clearly know
The implementation method of transmitting terminal in road the present embodiment, so this will not be detailed here in order to illustrate the succinct of book.
Based on the same inventive concept, the embodiment of the present invention also provides a kind of reception device, as shown in figure 13, comprising:
First receiving unit 131, for receiving the first message from transmitting terminal, first message is in the second message
In be added to the message of first identifier, it is the message in N number of message that the first identifier, which is used to identify second message, described
N number of message is that data flow belonging to second message completes N number of message before transmission, and N is greater than 0 and is less than the data flow
Message amount；
Processing unit 132, for handling first message, the message transmissions according to message transmissions strategy
Strategy includes the processing mode used to first message.
Optionally, the processing unit 132 is specifically used for:
After the corresponding message queue of the data flow received is more than first threshold, what preferential discarding received is not taken
Message with the first identifier.
Optionally, the processing unit 132 is specifically used for:
According to the first identifier and corresponding relationship, the first parameter is obtained, the corresponding relationship includes the first identifier
With first parameter, first parameter includes second threshold and drop probability, and the drop probability is lost for indicating to execute
Abandon the percentage of message operation；
After the corresponding message queue of the data flow received is more than the second threshold, according to the drop probability
The message for not carrying the first identifier received is abandoned.
Optionally, the processing unit 132 is specifically used for:
First message is replicated, M first messages are obtained, the M is the integer more than or equal to 2；
The M first messages are sent to wireless terminal.
Optionally, the M is the numerical value determined according to the default value of message number of copies；Or
The M is the number determined according to the link-quality between access quantity and/or the receiving end and the wireless terminal
Value, the access quantity is to have already accessed to the wireless terminal quantity of the receiving end.
Optionally, the N is greater than 1, described device further include:
Second receiving unit, for receiving the third message from the transmitting terminal, the third message is in the 4th report
The message of first identifier is added in text, it is the message in N number of message, institute that the first identifier, which is used to identify the 4th message,
Stating N number of message is that data flow belonging to second message completes N number of message before transmission；
Transmission unit, for sending the third message to the wireless terminal.
Various change mode and specific example in the method for transmission data in 7 embodiment of earlier figures are equally applicable to this
The reception device of embodiment, by the detailed description of the aforementioned method to data transmission, those skilled in the art can be clear
The implementation method of reception device in the present embodiment is known, so this will not be detailed here in order to illustrate the succinct of book.
Based on the same inventive concept, the embodiment of the present invention also provides a kind of receiving end, as shown in figure 14, comprising: processor
702, receiver 701, transmitter 703 and communication bus 700；Wherein, the receiver 701, the transmitter 703 and the place
It manages device 702 and mutual communication is completed by the communication bus 700；
The receiver 701 is used for:
The first message from transmitting terminal is received, first message is the report that first identifier is added in the second message
Text, it is the message in N number of message that the first identifier, which is used to identify second message, and N number of message is second report
Data flow belonging to text completes N number of message before transmission, and N is greater than 0 and is less than the message amount of the data flow；
The processor 702 is used for:
According to message transmissions strategy, first message is handled, the message transmissions strategy includes to described
The processing mode that one message uses.
Optionally, the processor 702 is specifically used for:
After the corresponding message queue of the data flow received is more than first threshold, what preferential discarding received is not taken
Message with the first identifier.
Optionally, the processor 702 is specifically used for:
According to the first identifier and corresponding relationship, the first parameter is obtained, the corresponding relationship includes the first identifier
With first parameter, first parameter includes second threshold and drop probability, and the drop probability is lost for indicating to execute
Abandon the percentage of message operation；
After the corresponding message queue of the data flow received is more than the second threshold, according to the drop probability
The message for not carrying the first identifier received is abandoned.
Optionally, the processor 702 is specifically used for:
First message is replicated, M first messages are obtained, the M is the integer more than or equal to 2；
The transmitter 703 is used for:
The M first messages are sent to wireless terminal.
Optionally, the M is the numerical value determined according to the default value of message number of copies；Or
The M is the number determined according to the link-quality between access quantity and/or the receiving end and the wireless terminal
Value, the access quantity is to have already accessed to the wireless terminal quantity of the receiving end.
Optionally, the N is greater than 1, and the receiver 701 is specifically used for:
For receiving the third message from the transmitting terminal, the third message is to be added to first in the 4th message
The message of mark, it is the message in N number of message that the first identifier, which is used to identify the 4th message, and N number of message is institute
It states data flow belonging to the second message and completes N number of message before transmission；
The transmitter 703 is specifically used for:
The third message is sent to the wireless terminal.
Further, in Figure 14, communication bus 700 may include the bus and bridge of any number of interconnection, communication bus
700 will include the one or more processors represented by processor 702 and the various circuits of memory that memory 704 represents connect
It is connected together.Communication bus 700 can also be by the various other of such as peripheral equipment, voltage-stablizer and management circuit or the like
Together, these are all it is known in the art for circuit connection, and therefore, it will not be further described herein.Bus connects
Mouth 705 provides interface between communication bus 700 and transmitter 703.Receiver 701 and transmitter 703 can be the same member
Part, i.e. transceiver provide the unit for communicating over a transmission medium with various other devices.
Processor 702 is responsible for management communication bus 700 and common processing, and memory 704 can be used to store place
Manage the used data when executing operation of device 702.
Various change mode and specific example in the method for transmission data in 7 embodiment of earlier figures are equally applicable to this
The receiving end of embodiment, by the detailed description of the aforementioned method to data transmission, those skilled in the art can clearly know
The implementation method of receiving end in road the present embodiment, so this will not be detailed here in order to illustrate the succinct of book.
It should be understood by those skilled in the art that, the embodiment of the present invention can provide as method, system or computer program
Product.Therefore, complete hardware embodiment, complete software embodiment or reality combining software and hardware aspects can be used in the present invention
Apply the form of example.Moreover, it wherein includes the computer of computer usable program code that the present invention, which can be used in one or more,
The computer program implemented in usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.) produces
The form of product.
The present invention be referring to according to the method for the embodiment of the present invention, the process of equipment (system) and computer program product
Figure and/or block diagram describe.It should be understood that every one stream in flowchart and/or the block diagram can be realized by computer program instructions
The combination of process and/or box in journey and/or box and flowchart and/or the block diagram.It can provide these computer programs
Instruct the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce
A raw machine, so that being generated by the instruction that computer or the processor of other programmable data processing devices execute for real
The device for the function of being specified in present one or more flows of the flowchart and/or one or more blocks of the block diagram.
These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates,
Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram or
The function of being specified in multiple boxes.
Although preferred embodiments of the present invention have been described, it is created once a person skilled in the art knows basic
Property concept, then additional changes and modifications may be made to these embodiments.So it includes excellent that the following claims are intended to be interpreted as
It selects embodiment and falls into all change and modification of the scope of the invention.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
Mind and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (18)
1. a kind of data transmission method, which is characterized in that the described method includes:
Transmitting terminal obtains the first message in data flow, and first message is the report that first identifier is added in the second message
Text, it is the message in N number of message that the first identifier, which is used to identify second message, and N number of message is the data flow
N number of message before completing transmission, N are greater than 0 and are less than the message amount of the data flow；
First message is sent to receiving end by the transmitting terminal.
2. the method as described in claim 1, which is characterized in that the first message that the transmitting terminal obtains in data flow includes:
The second identifier that the transmitting terminal is carried according to second message determines that second message belongs to N number of message,
The second identifier is for identifying position of second message in the data flow；
The transmitting terminal adds the first identifier in second message, obtains first message.
3. method according to claim 1 or 2, which is characterized in that the first identifier is carried on the area of first message
Sub-service business code point dscp field；Or
The first identifier is carried on the option number field of first message.
4. a kind of data transmission method, which is characterized in that the described method includes:
Receiving end receives the first message from transmitting terminal, and first message is to be added to first identifier in the second message
Message, it is the message in N number of message that the first identifier, which is used to identify second message, and N number of message is described second
Data flow belonging to message completes N number of message before transmission, and N is greater than 0 and is less than the message amount of the data flow；
The receiving end is handled first message according to message transmissions strategy, and the message transmissions strategy includes pair
The processing mode that first message uses.
5. method as claimed in claim 4, which is characterized in that the receiving end is according to message transmissions strategy, to described first
Message carries out processing
After the corresponding message queue of the data flow received is more than first threshold, preferential abandon is received for the receiving end
The message for not carrying the first identifier.
6. method as claimed in claim 5, which is characterized in that the receiving end preferentially abandon receive do not carry described
One mark message include:
The receiving end obtains the first parameter according to the first identifier and corresponding relationship, and the corresponding relationship includes described the
One mark and first parameter, first parameter include second threshold and drop probability, and the drop probability is for indicating
Execute the percentage of dropping packets operation；
It is lost after the corresponding message queue of the data flow received is more than the second threshold according to described the receiving end
Probability is abandoned to abandon the message of the carrying first identifier received.
7. method as claimed in claim 4, which is characterized in that the receiving end is according to message transmissions strategy, to described first
Message carries out processing
First message is replicated in the receiving end, obtains M first messages, and the M is more than or equal to 2
Integer；
The M first messages are sent to wireless terminal by the receiving end.
8. the method for claim 7, which is characterized in that the M is to be determined according to the default value of message number of copies
Numerical value；Or
The M is the numerical value determined according to the link-quality between access quantity and/or the receiving end and the wireless terminal, institute
Stating access quantity is to have already accessed to the wireless terminal quantity of the receiving end.
9. the method for claim 7, which is characterized in that the N is greater than 1, the method also includes:
The receiving end receives the third message from the transmitting terminal, and the third message is that the is added in the 4th message
The message of one mark, it is the message in N number of message that the first identifier, which is used to identify the 4th message, and N number of message is
Data flow belonging to second message completes N number of message before transmission；
The receiving end sends the third message to the wireless terminal.
10. such as the described in any item methods of claim 4 to 9, which is characterized in that the first identifier is carried on first report
The differentiated Services code point dscp field of text；Or
The first identifier is carried on the option number field of first message.
11. a kind of sending device, which is characterized in that the sending device includes:
Obtaining unit, for obtaining the first message in data flow, first message is to be added to first in the second message
The message of mark, it is the message in N number of message that the first identifier, which is used to identify second message, and N number of message is institute
It states data flow and completes N number of message before transmission, N is greater than 0 and is less than the message amount of the data flow；
Transmission unit, for first message to be sent to reception device.
12. sending device as claimed in claim 11, which is characterized in that the obtaining unit is specifically used for:
According to the second identifier that second message carries, determine that second message belongs to N number of message, second mark
Know for identifying position of second message in the data flow；
The first identifier is added in second message, obtains first message.
13. a kind of reception device, which is characterized in that the reception device includes:
First receiving unit, for receiving the first message from transmitting terminal, first message is added in the second message
The message of first identifier, it is the message in N number of message, N number of report that the first identifier, which is used to identify second message,
Text is that data flow belonging to second message completes N number of message before transmission, and N is greater than 0 and is less than the message of the data flow
Quantity；
Processing unit, for handling first message, the message transmissions strategy includes according to message transmissions strategy
The processing mode that first message is used.
14. reception device as claimed in claim 13, which is characterized in that the processing unit is specifically used for:
After the corresponding message queue of the data flow received is more than first threshold, what preferential discarding received does not carry institute
State the message of first identifier.
15. reception device as claimed in claim 14, which is characterized in that the processing unit is specifically used for:
According to the first identifier and corresponding relationship, the first parameter is obtained, the corresponding relationship includes the first identifier and institute
The first parameter is stated, first parameter includes second threshold and drop probability, and the drop probability abandons report for indicating to execute
The percentage of text operation；
After the corresponding message queue of the data flow received is more than the second threshold, docked according to the drop probability
The message for not carrying the first identifier received is abandoned.
16. reception device as claimed in claim 13, which is characterized in that the processing unit is specifically used for:
First message is replicated, M first messages are obtained, the M is the integer more than or equal to 2；
The M first messages are sent to wireless terminal.
17. reception device as claimed in claim 16, which is characterized in that the M is the default value according to message number of copies
Determining numerical value；Or
The M is the numerical value determined according to the link-quality between access quantity and/or the receiving end and the wireless terminal, institute
Stating access quantity is to have already accessed to the wireless terminal quantity of the receiving end.
18. reception device as claimed in claim 16, which is characterized in that the N is greater than 1, described device further include:
Second receiving unit, for receiving the third message from the transmitting terminal, the third message is in the 4th message
It is added to the message of first identifier, it is the message in N number of message, the N that the first identifier, which is used to identify the 4th message,
A message is that data flow belonging to second message completes N number of message before transmission；
Transmission unit, for sending the third message to the wireless terminal.
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| PCT/CN2016/108902 WO2017097201A1 (en) | 2015-12-09 | 2016-12-07 | Data transmission method, transmission device and receiving device |
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| CN110535567B (en) * | 2019-09-20 | 2022-06-10 | 浙江科睿微电子技术有限公司 | Method and system for WLAN system aggregation retransmission |
| CN112003816B (en) * | 2020-06-22 | 2023-04-18 | 武汉光迅科技股份有限公司 | Data transmission method, device, equipment and storage medium |
| CN112865931B (en) * | 2020-12-30 | 2022-12-06 | 京信网络系统股份有限公司 | Data retransmission processing method, device, equipment and readable storage medium |
| CN113992607B (en) * | 2021-09-09 | 2023-11-03 | 新华三信息安全技术有限公司 | Message processing method and device |
| CN116633911A (en) * | 2022-02-08 | 2023-08-22 | 华为技术有限公司 | Data processing method, device and system |
| CN114826974A (en) * | 2022-04-29 | 2022-07-29 | 东风电驱动系统有限公司 | CAN message timeout calculation method, device, equipment and readable storage medium |
| CN114978986B (en) * | 2022-05-13 | 2024-05-14 | 中国联合网络通信集团有限公司 | Data transmission method, device and storage medium |
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| CN106856457A (en) | 2017-06-16 |
| WO2017097201A1 (en) | 2017-06-15 |
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