CN101043438A - System and method for transmitting data packet - Google Patents
System and method for transmitting data packet Download PDFInfo
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- CN101043438A CN101043438A CNA2006100661584A CN200610066158A CN101043438A CN 101043438 A CN101043438 A CN 101043438A CN A2006100661584 A CNA2006100661584 A CN A2006100661584A CN 200610066158 A CN200610066158 A CN 200610066158A CN 101043438 A CN101043438 A CN 101043438A
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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
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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
- H04L47/2416—Real-time traffic
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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
- H04L47/2425—Traffic characterised by specific attributes, e.g. priority or QoS for supporting services specification, e.g. SLA
- H04L47/2433—Allocation of priorities to traffic types
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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
- H04L47/245—Traffic characterised by specific attributes, e.g. priority or QoS using preemption
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- Data Exchanges In Wide-Area Networks (AREA)
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Abstract
The provided data packet transmission system comprises a data transmission device and a data receiving device. The relative comprises: S302, to transmit emergent packet with higher PRI, the transmission device hangs up the packet with lower PRI and send the control signal and packet with higher PRI to the receiver,; and S304, the receiving device receives and processes the data packet according to the control signal. This invention reduces delay for packet with higher PRI, and holds bandwidth utility.
Description
Technical field
The present invention relates to field of data transmission, relate in particular to a kind of data packet transmission system and data pack transmission method.
Background technology
At present, data transfer equipment all can be used queue scheduling mechanism (Queuing Scheduling Mechanism) in outlet dispatching services process.The function of queue scheduling is how router selects grouping next to be transmitted from one or more formations, and queue scheduling and queue management mechanism are essentially different.According to different service regulations, queue scheduling algorithm can be divided into following several: (Processor Sharing), priority service, service etc. are at random shared in First Come First Served (FCFS), round-robin scheduling (Round Robin), processor.
The queue scheduling algorithm that has occurred at present mainly contains: the algorithm two big classes of sharing (Generalized Processor Sharing is called for short GPS) based on the algorithm of round-robin scheduling, based on general processor.The performance index that effective queue scheduling algorithm should reach mainly contain: fairness, delay character, to the utilance of the isolating power of malicious traffic stream, link bandwidth, complexity etc., preceding 4 indexs and service quality (Quality of Service is called for short QoS) are closely related.
Algorithm based on round-robin scheduling is that alternately is served each formation, and it realizes simple, but can not provide time delay to guarantee to business, mainly contains WRR (WeightedRound Robin), difference poll (Deficit Round Robin) etc. at present.
The dispatching algorithm of sharing based on general processor mainly contains at present: Weighted Fair Queuing (Weighted Fair Queuing, abbreviation WFQ), (the Self-Clocked Fair Queuing of self-clock fair-queueing, SCFQ), dummy clock (Virtual Clock, be called for short VC) etc., their (especially Weighted Fair Queuings) can provide fairness preferably, delay character and to the isolating power of malicious traffic stream, but work as number of queues more for a long time, and its implementation complexity is bigger.
It is indivisible that but above queue scheduling algorithm all is based on packet, Once you begin sends certain packet, must just begin to start the next packet of transmission after this packet transmission finishes.If have a long lower-priority data bag to begin to send, but receive a high priority packets of being badly in need of transmission, high priority packets can only wait to be sent so.Increased the time-delay of high priority packets.
Fig. 1 is the data pack transmission method according to correlation technique.As shown in Figure 1, scheduler only is checked through lower-priority data bag L1 at time S1 to be needed to send, and just begins to send L1.At next scheduling time S2, need to send although there is the H1 of high priority to wrap, L1 does not also send and finishes, and H1 waits for after the L1 transmission finishes and just begins to send.
At present, ATM is divided into isometric small data packets with the long data bag on upper strata and sends, even if the packet of high priority needs time-delay to send so, it is also very little to delay time.
But, being divided into small data packets and bringing very big overhead, bandwidth availability ratio is low and processing subpackage and group bag is very complicated.So, need a kind of data pack transmission method that can reduce time-delay and don't increase overhead.
Summary of the invention
At above problem, the object of the present invention is to provide a kind of data packet transmission system and method, can when transmitting urgent high priority packets, needs transmit this high priority packets in time, reduce the time delay of high priority packets.
This data packet transmission system comprises: data sending device 202 is used for lower-priority data bag temporary suspension, then control signal and high priority packets being sent to data sink when needs transmit urgent high priority packets; And data sink 204, be used for according to the packet of control signal reception from data sending device.
Control signal comprises: switch-over control signal is used for the designation data receiving system and begins to receive high priority packets; And the recovery control signal, be used for the designation data receiving system and begin to continue to receive the lower-priority data bag.
Data sending device 202 comprises: packet is hung up module 202-2, is used for when needs transmit urgent high priority packets, with lower-priority data bag temporary suspension; Control signal sending module 202-4 is used for after the lower-priority data bag is hung up switch-over control signal being sent to data sink, and will recover control signal be sent to data sink when urgent high priority packets end of transmission; And data transmission blocks 202-6, be used for after the control signal sending module sends switch-over control signal, urgent high priority packets is sent to data sink, and after the control signal sending module sends the recovery control signal, remaining lower-priority data bag is continued to be sent to data sink.
Data sink 204 comprises: the first data memory module 204-2 is used to receive the lower-priority data bag from data sending device; The second data memory module 204-4 is used to receive the urgent high priority packets from data sending device; Data Receiving control module 204-6 is used for when receiving switch-over control signal, and indication is stored the high priority packets that receives into second data memory module, and the designation data processing module is handled the high priority packets that receives simultaneously; And when receiving the recovery control signal, indication is stored the lower-priority data bag that receives into first data memory module; And data processing module 204-8, be used to handle the packet that receives.
When a plurality of high priority packets, can transmit one or more urgent high priority packets continuously.
Data pack transmission method provided by the invention may further comprise the steps: step S302, when needs transmit urgent high priority packets, data sending device is sent to data sink with control signal and high priority packets then with lower-priority data bag temporary suspension; And step S304, data sink receives from the packet of data sending device according to control signal and handles.
Control signal comprises: switch-over control signal is used for the designation data receiving system and begins to receive high priority packets; And the recovery control signal, be used for the designation data receiving system and begin to continue to receive the lower-priority data bag.
Step S302 comprises:
Step 302-2 is when needs transmit urgent high priority packets, with lower-priority data bag temporary suspension;
Step 302-4 after the lower-priority data bag is hung up, is sent to data sink with switch-over control signal earlier, then high priority packets is sent to data sink;
Step 302-6 will recover control signal and be sent to data sink when urgent high priority packets end of transmission, then remaining lower-priority data bag is continued to be sent to data sink.
Step 304 comprises:
Step 304-2 when receiving switch-over control signal, begins to receive high priority packets, and stores the high priority packets that receives into second data memory module;
Step 304-4 counts bag to high priority and handles after receiving high priority packets; And
Step 304-6 when receiving the recovery control signal, begins to receive the lower-priority data bag, stores the lower-priority data bag that receives into first data memory module.
When a plurality of high priority packets, can transmit one or more urgent high priority packets continuously.
The present invention inserts high priority packets by adopting on the ground of enforcement midway that sends the lower-priority data bag, has reduced the time-delay of high priority packets, can not reduce bandwidth availability ratio simultaneously, has very strong practicality.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is the traditional data pack transmission method according to prior art;
Fig. 2 is the structural representation according to data packet transmission of the present invention system;
Fig. 3 is the flow chart according to data pack transmission method of the present invention;
Fig. 4 is the further flow chart according to the part flow process of data pack transmission method of the present invention;
Fig. 5 is the further flow chart according to the part flow process of data pack transmission method of the present invention;
Fig. 6 is the schematic diagram of data pack transmission method according to an embodiment of the invention;
Fig. 7 is the control routine collection of enumerating according to embodiments of the invention;
Fig. 8 is the schematic diagram that inserts control signal according to an embodiment of the invention between two frames; And
Fig. 9 is a data packet transmission view according to an embodiment of the invention.
Embodiment
Describe the present invention below with reference to the accompanying drawings in detail.
Fig. 2 is the block diagram according to data packet transmission of the present invention system.As shown in Figure 2, this data packet transmission system 200 comprises: data sending device 202, be used for when needs transmit urgent high priority packets,, then control signal and high priority packets being sent to data sink with lower-priority data bag temporary suspension; And data sink 204, be used for according to the packet of control signal reception from data sending device.
Control signal comprises: switch-over control signal is used for the designation data receiving system and begins to receive high priority packets; And the recovery control signal, be used for the designation data receiving system and begin to continue to receive the lower-priority data bag.
Data sending device 202 comprises: packet is hung up module 202-2, is used for when needs transmit urgent high priority packets, with lower-priority data bag temporary suspension; Control signal sending module 202-4 is used for after the lower-priority data bag is hung up switch-over control signal being sent to data sink, and will recover control signal be sent to data sink when urgent high priority packets end of transmission; And data transmission blocks 202-6, be used for after the control signal sending module sends switch-over control signal, urgent high priority packets is sent to data sink, and after the control signal sending module sends the recovery control signal, remaining lower-priority data bag is continued to be sent to data sink.
Data sink 204 comprises: the first data memory module 204-2 is used to receive the lower-priority data from data sending device; The second data memory module 204-4 is used to receive the urgent high priority packets from data sending device; Data Receiving control module 204-6 is used for when receiving switch-over control signal, and indication is stored the high priority packets that receives into second data memory module, and the designation data processing module is handled the high priority packets that receives simultaneously; And when receiving the recovery control signal, indication is stored the lower-priority data bag that receives into first data memory module; And data processing module 204-8, be used to handle the packet that receives.
When a plurality of high priority packets, can transmit one or more urgent high priority packets continuously.
Fig. 3 is the flow chart according to data pack transmission method of the present invention.As shown in Figure 2, this data pack transmission method may further comprise the steps:
Step S302, when needs transmitted urgent high priority packets, data sending device was sent to data sink with control signal and high priority packets then with lower-priority data bag temporary suspension; And
Step S304, data sink receives from the data of data sending device according to control signal and handles.
Control signal comprises: switch-over control signal is used for the designation data receiving system and begins to receive high priority packets; And the recovery control signal, be used for the designation data receiving system and begin to continue to receive the lower-priority data bag.
When a plurality of high priority packets, can transmit one or more urgent high priority packets continuously.
Fig. 4 is the further flow chart according to the part flow process of data pack transmission method of the present invention.As shown in Figure 4, step S302 comprises:
Step 302-2 is when needs transmit urgent high priority packets, with lower-priority data bag temporary suspension;
Step 302-4 is sent to data sink with switch-over control signal and high priority packets after the lower-priority data bag is hung up;
Step 302-6 will recover control signal and be sent to data sink when urgent high priority packets end of transmission, then remaining lower-priority data bag is continued to be sent to data sink.
Fig. 5 is the further flow chart according to the part flow process of data pack transmission method of the present invention.As shown in Figure 5, step 304 comprises:
Step 304-2 when receiving switch-over control signal, begins to receive high priority packets, and stores the high priority packets that receives into second data memory module;
Step 304-4 counts bag to high priority and handles after receiving high priority packets; And
Step 304-6 when receiving the recovery control signal, begins to receive the lower-priority data bag, stores the lower-priority data bag that receives into first data memory module.
Fig. 6 is the schematic diagram of data pack transmission method according to an embodiment of the invention.As shown in Figure 6, when needs send urgent high priority packets, for time-delay and the delay jitter that ensures high priority packets, a part of lower-priority data bag H1 temporary suspension will have been sent, and switch-over control signal sent to receiving terminal, begin to send the urgent high priority packets that needs transmission then, receiving terminal switches to the another one metadata cache after receiving switch-over control signal, begin to receive this high priority packets H2, and this high priority packets H2 is stored in the metadata cache that is switched to and simultaneously the high priority packets H2 that receives is handled.When sending high priority packets H2, transmitting terminal sends to receiving terminal and recovers control signal, and receiving terminal receives and recovers after the control signal metadata cache to be switched to previous metadata cache, and begins to receive the residue lower-priority data bag H1 of previous reception.
Trigger the insertion high priority packets two kinds of situations are arranged: first kind of situation is that scheduler finds to have the high priority message to need to send in scheduling constantly.Second kind of situation is to trigger after high-priority queue is received packet.
Data pack transmission method of the present invention can be applied to Ethernet, also can be applied in optical-fibre channel (Fibre Channel), the optical fiber connection technology such as (FICON).In the network configuration (such as physical layer) that packet transmits with control coding, such as the physical layer encodes of 4B/5B, 8B/10B, 64B/66B or other form of Ethernet, define special packet and transmit and switch and recover the control coding as control signal.
In block coding system, if code space is bigger than data space, may have the code bit that some are not used, they do not correspond to any data value.These code bits can be used for control, for example, delimit beginning and end, the idle waiting of frame or carry spread signal, bomp or the like.Encode such as the 4B/5B in the Ethernet, 8B/10B.Wherein have much to be used to the code set controlled, become ordered set.Table as shown in Figure 7.
In the process that ethernet data frame transmits, just have between two frames much to be used to the coding controlled, as shown in Figure 8, the control signal among the present invention can be inserted between two frames.
Fig. 9 is a data packet transmission view according to an embodiment of the invention.The present invention has sent bag by adopting the control coding to hang up, and the command character of hanging up (that is control signal) is hung up and removed in definition is K28.2 and K28.3 (can be other command characters that control character is concentrated).
Receiving terminal has at least a special additional buffered (Buffer) can receive the high priority packets of urgent insertion, and is more certainly better.
When t1, the lower-priority data that is sending is ended to be sent, and inserts the command character (such as being K28.2) that data are hung up, and sends high priority packets then.After transmission finishes, send and remove the K28.3 command character of hanging up.Continue to send the remainder that is suspended bag then.
Receiving terminal switches buffer memory after t1 receives to hang up control word constantly, receive high priority packets with another buffer memory.Receive when t2 and remove the control word of hanging up, switching is cached to low priority, receives complete lower-priority data bag when t3, and at this moment, the packet in the high-priority buffer is processed to be over, and has reduced the time-delay of high priority packets like this.
There is the situation of insertion high priority packets continuously, such as, previous high priority packets is inserted to send as yet and is finished, and transmitting terminal has been received a high priority packets again, can continue to insert the high priority packets that needs transmission.
The present invention inserts high priority packets by adopting on the ground of enforcement midway that sends the lower-priority data bag, has reduced the time-delay of high priority packets, can not reduce bandwidth availability ratio simultaneously, has very strong practicality.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. data pack transmission method is characterized in that may further comprise the steps:
Step S302, when needs transmitted urgent high priority packets, data sending device was sent to data sink with control signal and described high priority packets then with lower-priority data bag temporary suspension; And
Step S304, described data sink receives from the packet of described data sending device according to described control signal and handles.
2. data pack transmission method according to claim 1 is characterized in that, described control signal comprises:
Switch-over control signal is used to indicate described data sink to begin to receive described high priority packets; And
Recover control signal, be used to indicate described data sink to begin to continue to receive described lower-priority data bag.
3. data pack transmission method according to claim 2 is characterized in that, described step S302 comprises:
Step 302-2 is when needs transmit urgent high priority packets, with lower-priority data bag temporary suspension;
Step 302-4 is sent to described data sink with switch-over control signal after described lower-priority data bag is hung up, then described high priority packets is sent to described data sink;
Step 302-6 when described urgent high priority packets end of transmission, will recover control signal and be sent to described data sink, then remaining lower-priority data bag be continued to be sent to described data sink.
4. data pack transmission method according to claim 1 is characterized in that, described step 304 comprises:
Step 304-2 when receiving switch-over control signal, begins to receive high priority packets, and stores the high priority packets that receives into described second data memory module;
Step 304-4 counts bag to described high priority and handles after receiving described high priority packets; And
Step 304-6 when receiving the recovery control signal, begins to receive the lower-priority data bag, and stores the lower-priority data bag that receives into described first data memory module.
5. according to each described data pack transmission method in the claim 1 to 4, it is characterized in that, can transmit one or more described urgent high priority packets continuously.
6. data packet transmission system is characterized in that comprising:
Data sending device is used for lower-priority data bag temporary suspension, then control signal and described high priority packets being sent to data sink when needs transmit urgent high priority packets; And
Described data sink is used for according to the packet of described control signal reception from described data sending device.
7. data packet transmission according to claim 6 system is characterized in that described control signal comprises:
Switch-over control signal is used to indicate described data sink to begin to receive described high priority packets; And
Recover control signal, be used to indicate described data sink to begin to continue to receive described lower-priority data bag.
8. data packet transmission according to claim 7 system is characterized in that described data sending device comprises:
Packet is hung up module, is used for when needs transmit urgent high priority packets, with lower-priority data bag temporary suspension;
The control signal sending module is used for after described lower-priority data bag is hung up switch-over control signal being sent to data sink; And when described urgent high priority packets end of transmission, will recover control signal and be sent to described data sink; And
Data transmission blocks is used for after described control signal sending module sends described switch-over control signal described urgent high priority packets being sent to described data sink; And after described control signal sending module sends described recovery control signal, remaining lower-priority data bag is continued to be sent to described data sink.
9. data packet transmission according to claim 6 system is characterized in that described data sink comprises:
First data memory module is used to receive the lower-priority data bag from described data sending device;
Second data memory module is used to receive the urgent high priority packets from described data sending device;
The Data Receiving control module, be used for when receiving switch-over control signal, indication is stored the high priority packets that receives into described second data memory module, and the designation data processing module is handled the described high priority packets that receives simultaneously; And when receiving the recovery control signal, indication is stored the lower-priority data bag that receives into described first data memory module; And
Data processing module is used to handle the packet that receives.
10. according to each described data packet transmission system in the claim 6 to 9, it is characterized in that, can transmit one or more urgent high priority packets continuously.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006100661584A CN101043438A (en) | 2006-03-24 | 2006-03-24 | System and method for transmitting data packet |
| PCT/CN2007/000953 WO2007109991A1 (en) | 2006-03-24 | 2007-03-26 | A method, device and system for data packets transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006100661584A CN101043438A (en) | 2006-03-24 | 2006-03-24 | System and method for transmitting data packet |
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| CN101043438A true CN101043438A (en) | 2007-09-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNA2006100661584A Pending CN101043438A (en) | 2006-03-24 | 2006-03-24 | System and method for transmitting data packet |
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| CN (1) | CN101043438A (en) |
| WO (1) | WO2007109991A1 (en) |
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| CN103199900A (en) * | 2012-01-06 | 2013-07-10 | 索尼公司 | Information processing apparatus, information processing method, and program |
| CN104079501A (en) * | 2014-06-05 | 2014-10-01 | 深圳市邦彦信息技术有限公司 | Queue scheduling method based on multiple priorities |
| CN104581839A (en) * | 2013-10-24 | 2015-04-29 | 展讯通信（上海）有限公司 | Information transmission method and communication equipment |
| CN104734468A (en) * | 2013-12-23 | 2015-06-24 | 上海英威腾工业技术有限公司 | Interrupt processing method for IGBT module driving optocoupling circuit fault signals |
| CN107005461A (en) * | 2014-12-08 | 2017-08-01 | 华为技术有限公司 | A kind of data transmission method and equipment |
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| US7339893B2 (en) * | 2003-03-18 | 2008-03-04 | Cisco Technology, Inc. | Pre-empting low-priority traffic with high-priority traffic on a dedicated link |
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| CN109818710A (en) * | 2017-11-21 | 2019-05-28 | 中移（杭州）信息技术有限公司 | A kind of data transmission method and corresponding intrument |
| CN112088524A (en) * | 2018-05-03 | 2020-12-15 | 奥迪股份公司 | Transmission of data of different priorities by means of bluetooth low energy |
| CN112088524B (en) * | 2018-05-03 | 2023-06-20 | 奥迪股份公司 | Transmission of data of different priorities by means of Bluetooth low energy consumption |
| WO2020207469A1 (en) * | 2019-04-10 | 2020-10-15 | 华为技术有限公司 | Service processing method and apparatus |
| CN111817985A (en) * | 2019-04-10 | 2020-10-23 | 华为技术有限公司 | Service processing method and device |
| CN111817985B (en) * | 2019-04-10 | 2024-02-02 | 华为技术有限公司 | Service processing method and device |
| CN111428973A (en) * | 2020-03-11 | 2020-07-17 | 慧镕电子系统工程股份有限公司 | Virtual resource allocation method capable of effectively improving resource utilization rate |
| CN111428973B (en) * | 2020-03-11 | 2024-04-12 | 慧镕电子系统工程股份有限公司 | Virtual resource allocation method capable of effectively improving resource utilization rate |
| CN112468182A (en) * | 2020-11-23 | 2021-03-09 | 杭州海康威视数字技术股份有限公司 | Data transmission device, method and readable storage medium |
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