CN109586932A - Method of multicasting and terminal device - Google Patents

Method of multicasting and terminal device Download PDF

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Publication number
CN109586932A
CN109586932A CN201811216509.4A CN201811216509A CN109586932A CN 109586932 A CN109586932 A CN 109586932A CN 201811216509 A CN201811216509 A CN 201811216509A CN 109586932 A CN109586932 A CN 109586932A
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CN
China
Prior art keywords
data
loss
preset time
data packet
multicast
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CN201811216509.4A
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Chinese (zh)
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CN109586932B (en
Inventor
王伟标
胡宇辉
彭政生
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China Merchants Securities Ltd By Share Ltd
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China Merchants Securities Ltd By Share Ltd
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Priority to CN201811216509.4A priority Critical patent/CN109586932B/en
Publication of CN109586932A publication Critical patent/CN109586932A/en
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00Data switching networks
    • H04L12/02Details
    • H04L12/16Arrangements for providing special services to substations
    • H04L12/18Arrangements for providing special services to substations for broadcast or conference, e.g. multicast
    • H04L12/1863Arrangements for providing special services to substations for broadcast or conference, e.g. multicast comprising mechanisms for improved reliability, e.g. status reports
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/12Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16Arrangements 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
    • H04L1/1607Details of the supervisory signal

Abstract

The present invention is suitable for field of communication technology, provide a kind of method of multicasting and terminal device, all recipients are subjected to subregion using consistency hash algorithm, the sender of the same area belongs to the same sub- multicast group, when data-bag lost occurs for recipient's received data packet, other recipients of the meeting into the same sub- multicast group send the instruction of the first data re-transmitting, request data retransmission;When loss of data occurs for all recipients in same sub- multicast group, recipient sends the second data re-transmitting and instructs to sender's request data retransmission.The reliability transmission for guaranteeing multicast packet in this manner, improves the efficiency of transmission of data.

Description

Method of multicasting and terminal device
Technical field
The invention belongs to field of communication technology more particularly to a kind of method of multicasting and terminal device.
Background technique
Multicast transmission: point-to-point configuration connection is realized between sender and each recipient.If a sender Identical data are transmitted to multiple recipients simultaneously, also need to only replicate a identical data packet.It improves data transmission Efficiency.Reduce backbone network and a possibility that congestion occurs.
RDMA (Remote Direct Memory Access, remote direct data access) is to solve network transmission The delay of middle servers' data processing and generate.RDMA is directly passed to data the memory block of computer by network, will Data move quickly into remote system stored device from a system, without having any impact to operating system, thus not Need to use the processing function of how many computer.It eliminates the expense of external memory duplication and context switching, thus energy Liberation memory bandwidth and cpu cycle are for improving application system performance.
RDMA technology is introduced into multicast scheme, very fast reliable multicast is realized in local area network, but there are numbers for such method According to the unstable problem of transmission.
Summary of the invention
In view of this, the embodiment of the invention provides a kind of method of multicasting and terminal device, to solve to count in the prior art According to the unstable problem of transmission.
In order to solve the above technical problems, the first aspect of the embodiment of the present invention provides a kind of method of multicasting, comprising:
Several data packets that sender sends are received, and judge whether that data-bag lost occurs;
When data-bag lost occurs, the first data re-transmitting instruction to be sent such as inhibition in the first preset time, and sentence The disconnected data packet for whether receiving loss;
It is other into the same sub- multicast group if not receiving the data packet of loss in the first preset time range Recipient send first data re-transmitting instruction, and judge whether in the second preset time to receive the data of loss Packet, wherein all recipients are carried out by subregion using consistency hash algorithm, the sender of the same area belongs to the same subgroup Broadcast group;
If not receiving the data packet of loss in the second preset time, inhibition etc. is to be sent in third preset time The instruction of second data re-transmitting, and judge whether to receive the data packet of loss;
If not receiving the data packet of loss in third preset time, second data are sent to described sender Reissue commands.
Further, judge the method for data-bag lost are as follows:
The difference of the number of the two adjacent data packets received exceeds threshold range, then assert data-bag lost.
Further, if receiving the data packet of loss in the first preset time range, first number is not sent According to reissue commands.
Further, if receiving the data packet of loss in the second preset time range, second number is not generated According to reissue commands.
Further, if receiving the data packet of loss in third preset time range, second number is not sent According to reissue commands.
The second aspect of the embodiment of the present invention provides a kind of multicast apparatus, including receiving module, control module and transmission Module;
The receiving module receives several data packets that sender sends, and several data packets received are transmitted To the control module, the control module simultaneously judges whether that data-bag lost occurs;
When data-bag lost occurs, the first data weights to be sent such as the control module inhibits in the first preset time Send instructions, and judges whether to receive the data packet of loss;
If the control module does not receive the data packet of loss in the first preset time range, the control module is logical It crosses other recipients of the sending module into the same sub- multicast group and sends the first data re-transmitting instruction, and the Judge whether to receive the data packet of loss in two preset times, wherein using consistency hash algorithm by all recipients into Row subregion, the sender of the same area belong to the same sub- multicast group;
If the control module does not receive the data packet of loss in the second preset time, the control module is in third The second data re-transmitting instruction to be sent such as inhibition in preset time, and judge whether to receive the data packet of loss;
If the control module does not receive the data packet of loss in third preset time, the control module passes through institute It states sending module and sends the second data re-transmitting instruction to described sender.
Further, the control module judges the method for data-bag lost are as follows:
The difference of the number of the two adjacent data packets received exceeds threshold range, then assert data-bag lost.
Further, it after described sender receives the second data re-transmitting instruction, is broadcast to the subgroup where recipient All recipients in group retransmit specified data.
The third aspect of the embodiment of the present invention provides a kind of multi-cast terminal equipment, including memory, processor and deposits The computer program that can be run in the memory and on the processor is stored up, the processor executes the computer journey The step of method described above is realized when sequence.
The third aspect of the embodiment of the present invention provides a kind of computer readable storage medium, the computer-readable storage Media storage has the step of computer program, the computer program realizes method described above when being executed by processor.
The beneficial effects of adopting the technical scheme are that the present invention is connect using consistency hash algorithm by all Debit carries out subregion, and the sender of the same area belongs to the same sub- multicast group, when data packet occurs for recipient's received data packet When loss, other recipients of the meeting into the same sub- multicast group send the instruction of the first data re-transmitting, request data retransmission;When same When loss of data occurs for all recipients in one sub- multicast group, recipient's the second data re-transmitting of transmission, which is instructed to sender, is asked Data are asked to retransmit.The reliability transmission for guaranteeing multicast packet in this manner, improves the efficiency of transmission of data.
Detailed description of the invention
It to describe the technical solutions in the embodiments of the present invention more clearly, below will be to embodiment or description of the prior art Needed in attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description is only of the invention some Embodiment for those of ordinary skill in the art without any creative labor, can also be according to these Attached drawing obtains other attached drawings.
Fig. 1 is the logical flow chart of method of multicasting provided in an embodiment of the present invention;
Fig. 2 is the functional block diagram of multicast apparatus provided in an embodiment of the present invention.
Specific embodiment
In being described below, for illustration and not for limitation, the tool of such as particular system structure, technology etc is proposed Body details, to understand thoroughly the embodiment of the present invention.However, it will be clear to one skilled in the art that there is no these specific The present invention also may be implemented in the other embodiments of details.In other situations, it omits to well-known system, device, electricity The detailed description of road and method, in case unnecessary details interferes description of the invention.
In order to illustrate technical solutions according to the invention, the following is a description of specific embodiments.
As shown in Figure 1, being the logical flow chart of method of multicasting provided in an embodiment of the present invention, comprising:
Step S100 receives several data packets that sender sends.
In one embodiment of the present of invention, the method for data-bag lost is judged are as follows: the two adjacent data packets received Number difference exceed threshold range, then assert data-bag lost.
Step S101 judges whether that data-bag lost occurs.
Step S102, when data-bag lost occurs, first data re-transmitting to be sent such as inhibition in the first preset time Instruction.
Step S103 judges whether the data packet for receiving loss.
Step S104 is broadcast if not receiving the data packet of loss in the first preset time range to the same subgroup Other recipients in group send the instruction of the first data re-transmitting.
In one embodiment of the present of invention, if receiving the data packet of loss in the first preset time range, do not send out The first data re-transmitting is sent to instruct.
Wherein, all recipients are carried out by subregion using consistency hash algorithm, the sender of the same area belongs to same A sub- multicast group;
Step S105 judges whether the data packet for receiving loss in the second preset time.
Step S106 presses down in third preset time if not receiving the data packet of loss in the second preset time The second data re-transmitting instruction to be sent such as system.
In one embodiment of the present of invention, if receiving the data packet of loss in the second preset time range, do not give birth to It is instructed at the second data re-transmitting.
Step S107 judges whether the data packet for receiving loss in third preset time.
Step S108 sends the second number to sender if not receiving the data packet of loss in third preset time According to reissue commands.
In one embodiment of the present of invention, if receiving the data packet of loss in third preset time range, do not send out The second data re-transmitting is sent to instruct.
All recipients are carried out subregion using consistency hash algorithm by the present invention, and the sender of the same area belongs to same A sub- multicast group, when data-bag lost occurs for recipient's received data packet, other receptions of the meeting into the same sub- multicast group Side sends the instruction of the first data re-transmitting, request data retransmission;It is lost when data occur for all recipients in same sub- multicast group When mistake, recipient sends the second data re-transmitting and instructs to sender's request data retransmission.Guarantee multicast packet in this manner Reliability transmission, improve the efficiency of transmission of data.
As shown in Fig. 2, the invention discloses a kind of multicast apparatus, including receiving module, control module and sending module.
Receiving module receives several data packets that sender sends, and several data packets received are sent to control Molding block, control module simultaneously judge whether that data-bag lost occurs;When data-bag lost occurs, control module is default first The first data re-transmitting instruction to be sent such as inhibition in time, and judge whether to receive the data packet of loss;If default first Control module does not receive the data packet of loss in time range, and control module is by sending module into the same sub- multicast group Other recipients send the instruction of the first data re-transmitting, and judge whether in the second preset time to receive the data of loss Packet, wherein all recipients are carried out by subregion using consistency hash algorithm, the sender of the same area belongs to the same subgroup Broadcast group;If control module does not receive the data packet of loss in the second preset time, control module is in third preset time The second data re-transmitting instruction to be sent such as inhibition, and judge whether to receive the data packet of loss;If in third preset time Control module does not receive the data packet of loss, and control module sends the second data re-transmitting to sender by sending module and refers to It enables.
Control module controls and receives module and receives the data packet that sender sends, and when data-bag lost occurs, controls mould Block by sending module can other recipients into the same sub- multicast group send the instruction of the first data re-transmitting, request data weight It passes;When loss of data occurs for all recipients in same sub- multicast group, control module sends second by sending module Data re-transmitting is instructed to sender's request data retransmission.In this manner in the premise for guaranteeing multicast packet reliability transmission Under, improve the efficiency of transmission of data.
In one embodiment of the present of invention, method that control module judges data-bag lost are as follows: two received are adjacent Data packet number difference exceed threshold range, then assert data-bag lost.
In one embodiment of the present of invention, after sender receives the instruction of the second data re-transmitting, to the son where recipient All recipients in multicast group retransmit specified data.
A kind of multi-cast terminal equipment, including memory, processor and storage are disclosed in one embodiment of the present of invention In memory and the computer program that can run on a processor, processor realize the above method when executing computer program Step.
A kind of computer readable storage medium is disclosed in one embodiment of the present of invention, computer readable storage medium is deposited The step of containing computer program, the above method realized when computer program is executed by processor.
Embodiment described above is merely illustrative of the technical solution of the present invention, rather than its limitations;Although referring to aforementioned reality Applying example, invention is explained in detail, those skilled in the art should understand that: it still can be to aforementioned each Technical solution documented by embodiment is modified or equivalent replacement of some of the technical features;And these are modified Or replacement, the spirit and scope for technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution should all It is included within protection scope of the present invention.

Claims (10)

1. a kind of method of multicasting characterized by comprising
Several data packets that sender sends are received, and judge whether that data-bag lost occurs;
When data-bag lost occurs, the first data re-transmitting instruction to be sent such as inhibition in the first preset time, and judgement is The no data packet for receiving loss;
If not receiving the data packet of loss in the first preset time range, the others into the same sub- multicast group are connect Debit sends first data re-transmitting instruction, and judges whether in the second preset time to receive the data packet of loss, In, all recipients are carried out by subregion using consistency hash algorithm, the sender of the same area belongs to the same sub- multicast group;
If not receiving the data packet of loss in the second preset time, inhibition etc. to be sent second in third preset time Data re-transmitting instruction, and judge whether to receive the data packet of loss;
If not receiving the data packet of loss in third preset time, second data re-transmitting is sent to described sender Instruction.
2. method of multicasting according to claim 1, which is characterized in that judge the method for data-bag lost are as follows:
The difference of the number of the two adjacent data packets received exceeds threshold range, then assert data-bag lost.
3. method of multicasting according to claim 1, which is characterized in that if receiving loss in the first preset time range Data packet, then do not send first data re-transmitting instruction.
4. method of multicasting according to claim 1, which is characterized in that if receiving loss in the second preset time range Data packet, then do not generate second data re-transmitting instruction.
5. method of multicasting according to claim 1, which is characterized in that if receiving loss in third preset time range Data packet, then do not send second data re-transmitting instruction.
6. a kind of multicast apparatus, which is characterized in that including receiving module, control module and sending module;
The receiving module receives several data packets that sender sends, and several data packets received are sent to institute Control module is stated, the control module simultaneously judges whether that data-bag lost occurs;
When data-bag lost occurs, first data re-transmittings to be sent such as the control module inhibits in the first preset time refer to It enables, and judges whether to receive the data packet of loss;
If the control module does not receive the data packet of loss in the first preset time range, the control module passes through institute It states other recipients of the sending module into the same sub- multicast group and sends the first data re-transmitting instruction, and is pre- second If judging whether to receive the data packet of loss in the time, wherein divided all recipients using consistency hash algorithm Area, the sender of the same area belong to the same sub- multicast group;
If the control module does not receive the data packet of loss in the second preset time, the control module is default in third The second data re-transmitting instruction to be sent such as inhibition in time, and judge whether to receive the data packet of loss;
If the control module does not receive the data packet of loss in third preset time, the control module passes through the hair Module is sent to send the second data re-transmitting instruction to described sender.
7. multicast apparatus according to claim 6, which is characterized in that the method that the control module judges data-bag lost Are as follows:
The difference of the number of the two adjacent data packets received exceeds threshold range, then assert data-bag lost.
8. multicast apparatus according to claim 6, which is characterized in that described sender receives second data re-transmitting After instruction, all recipients into the sub- multicast group where recipient retransmit specified data.
9. a kind of multi-cast terminal equipment, including memory, processor and storage are in the memory and can be in the processing The computer program run on device, which is characterized in that the processor realizes such as claim 1 when executing the computer program The step of to any one of 5 the method.
10. a kind of computer readable storage medium, the computer-readable recording medium storage has computer program, and feature exists In when the computer program is executed by processor the step of any one of such as claim 1 to 5 of realization the method.
CN201811216509.4A 2018-10-18 2018-10-18 Multicast method and terminal equipment Active CN109586932B (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110740045A (en) * 2019-10-28 2020-01-31 支付宝(杭州)信息技术有限公司 Instruction multicast method and system

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CN106130746A (en) * 2016-07-06 2016-11-16 浙江宇视科技有限公司 A kind of data transmission method and device
US20180198747A1 (en) * 2017-01-10 2018-07-12 International Business Machines Corporation Ensuring that all users of a group message receive a response to the group message
CN108282277A (en) * 2018-01-22 2018-07-13 西安万像电子科技有限公司 A kind of packet loss repeating method, apparatus and system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102547386A (en) * 2012-01-12 2012-07-04 华为技术有限公司 Data retransmission method, system, multicast server and user terminal
CN106130746A (en) * 2016-07-06 2016-11-16 浙江宇视科技有限公司 A kind of data transmission method and device
US20180198747A1 (en) * 2017-01-10 2018-07-12 International Business Machines Corporation Ensuring that all users of a group message receive a response to the group message
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110740045A (en) * 2019-10-28 2020-01-31 支付宝(杭州)信息技术有限公司 Instruction multicast method and system

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