CN101938406A - Method and device for microwave multichannel message transmission and transmission system thereof - Google Patents
Method and device for microwave multichannel message transmission and transmission system thereof Download PDFInfo
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Abstract
The invention provides a method and device for microwave multichannel message transmission and a transmission system thereof. The method comprises the following steps: receiving a plurality of fixed-length message fragments of the message via multiple channels, wherein each message fragment comprises a fragment head which further comprises a serial number; and reassembling the message fragments into the message by the serial numbers. The invention can ensure the more even traffic of the multichannel transmission, effectively improve the bandwidth utilization rate of the bound channels and reduce the time delay of message processing; the invention can control the traffic of the channels in a dynamic way and combine with microwave adaptive modulation, thus helping guarantee the maximum throughput of the channels under the contingent or abnormal conditions; and the invention can delete/add the bound channels in a dynamic way, thus improving the reliability of transmission.
Description
Technical field
The present invention relates to a kind of field of information processing, relate in particular to a kind of microwave multichannel file transmitting method and device and transfer system.
Background technology
The channel spacing that the point-to-point microwave is commonly used has 3.5MHz, 7MHz, 14MHz, 28MHz, 40MHz and 56MHz.Because frequency spectrum resource is limited, high more channel spacing is difficult to obtain more.Modulation technique commonly used has binary phase-shift key (BPSK, Binary Phase Shift Keying), quadrature phase shift key (QPSK, Quadrature Phase-Shift Keying), 16 quadrature amplitude modulation (16QAM, Quadrature Amplitude Modulation), 32QAM, 64QAM, 128QAM and 256QAM.Though higher QAM modulation levels can provide bigger transmission capacity, but increase limited, only improve 1/8 as the 512QAM capacity than 256QAM, but can shorten simultaneously transmission range, reduced receiving sensitivity or require to increase transmitting power, the complexity and the cost of the ground modulation and demodulation algorithm that is multiplied, thereby less employing.Under 56MHz channel spacing and 256QAM modulating mode, general maximum can provide the bandwidth about 400Mbps.
In order to obtain bigger transmission bandwidth; usually adopt cochannel dual polarization (CCDP; Co-Channel Dual Polarization)+pattern (N+0) of the unprotected link that cross polarization interference cancellation (XPIC, Cross Polarization Interference Cancellation) and N road microwave are formed.CCDP vertical and two polarised directions of level under same frequency provide the bandwidth of same capability respectively, are equivalent to the bandwidth of twice altogether, and promptly 56MHz, 256QAM can provide the 800Mbps bandwidth.N+0 then is combined into a plurality of microwave channels a link, and N is provided bandwidth doubly.Comprise the method for Virtual Concatenation and the method for common two layers of packet switch+link aggregation at microwave by the transmission means that CCDP and the binding of N+0 passage increase transmission bandwidth.
The method of Virtual Concatenation can be formed and resembles VC-12-nv (1≤n≤64), VC-3-nv (1≤n≤256) or the such virtual cascade group of VC-4-nv (1≤n≤256), each VC-m time division multiplexing is gone to each microwave channel again.As 28MHz, 128QAM modulating mode, can support 1 STM-1, by the Virtual Concatenation mapping of VC-4-2v, can be with service traffics mean allocation to 2 VC-4 of 300Mbps, 1 VC-4 of each microwave channel.But this technology increases time-delay in mapping encapsulation decapsulation process, and microwave channel must hold NxSTM-1, and remaining waste of capacity less than 1 whole STM-1 part is fallen, and can not maximum utilize the bandwidth of microwave.
The method of common two layers of packet switch+link aggregation is when sending, and extracts some attribute or field from message, uses certain algorithm, according to result calculated message is distributed to different ether port (corresponding each microwave channel) here; Do not need special processing during reception.Generally choose some specific properties or field participation HASH calculating, as port numbers, MAC Address, IP address, TCP/UDP port numbers or the like from message.But which passage message is distributed to determine by message content, single as the keyword pattern that participates in HASH calculating, will have only individual channels to have an opportunity to send message; Distribution scheduling unit is whole message, and message has length that weak point is arranged, even carried out even scheduling by message, the long bag of certain passage is concentrated, the short situation about concentrating of wrapping of certain passage also can cause flow extremely unbalanced; Therefore this technology flow portfolio effect is bad, and extreme case can only obtain the single link bandwidth.
More than two kinds of methods have following problem: the bandwidth chahnel utilance in multichannel when binding is low; The Packet Service processing delay is bigger; Multichannel Packet Service flow is unbalanced.
Summary of the invention
The object of the present invention is to provide a kind of microwave the more passage file transmitting method and device and transfer system, to overcome the low problem of bandwidth chahnel utilance that exists in the prior art.
The present invention [YW1] embodiment provides a kind of microwave multichannel file transmitting method, and this method comprises: with the message cutting is a plurality of message fragments of regular length, for each message fragment adds a slice header, comprises sequence number in the described slice header; With the ratio of described each bandwidth chahnel flow as described each passage of weight allocation; Flow according to described each passage is distributed to described each passage with described message fragment.
The embodiment of the invention provides a kind of microwave multichannel packet transmission device, this device comprises: the message fragment unit, being used for the message cutting is a plurality of message fragments of regular length, for each message fragment adds a slice header, comprises sequence number in the described slice header; The multichannel scheduling unit is used for as the flow of described each passage of weight allocation and according to the flow of described each passage described message fragment being distributed to described each passage with the ratio of described each bandwidth chahnel.
The embodiment of the invention also provides a kind of microwave multichannel message transfer system, this system comprises: the message fragment dispensing device, be used for the message cutting is a plurality of message fragments of regular length, for each message fragment adds a slice header, comprise sequence number in the described slice header, as the flow of described each passage of weight allocation and according to the flow of described each passage described message fragment is distributed to described each passage with the ratio of described each bandwidth chahnel; The message fragment reconstruction unit is used for receiving described message fragment by described multichannel each passage, and according to described sequence number described message fragment is reassembled as described message.
By the embodiment of the invention described above, make the multichannel delivery flow rate more even, promote the bandwidth availability ratio of bound path effectively and reduced the message processing delay; Control channel flow dynamically, and and the combination of microwave Adaptive Modulation function, be beneficial under burst or abnormal conditions and still can guarantee the passage maximum throughput; Dynamically deletion/interpolation bound path has increased the transmission reliability.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, does not constitute limitation of the invention.In the accompanying drawings:
Fig. 1 is the flow chart of the microwave multichannel file transmitting method of the embodiment of the invention one;
Fig. 2 is the key diagram of message cutting step in the embodiment of the invention one;
Fig. 3 is the schematic diagram of message fragment form in the embodiment of the invention one;
Fig. 4 is the key diagram of message fragment allocation step in the embodiment of the invention one;
Fig. 5 is the key diagram of channel adaptive modulation function in the embodiment of the invention one;
Fig. 6 is the flow chart of the microwave multichannel file transmitting method of the embodiment of the invention two;
Fig. 7 is the key diagram of message cutting step in the embodiment of the invention two;
Fig. 8 is the key diagram of message fragment allocation step in the embodiment of the invention two;
Fig. 9 is the structural representation of the microwave multichannel packet transmission device of the embodiment of the invention three;
Figure 10 is the structural representation of message fragment module in the embodiment of the invention three;
Figure 11 is the structural representation of a kind of multichannel scheduling unit in the embodiment of the invention three;
Figure 12 is the structural representation of another kind of multichannel scheduling unit in the embodiment of the invention three;
Figure 13 is the structural representation of the microwave multichannel packet transmission device of the embodiment of the invention four;
Figure 14 is the structural representation of the microwave multichannel message transfer system of the embodiment of the invention five.
Embodiment
For the purpose, technical scheme and the advantage that make the embodiment of the invention is clearer,, the embodiment of the invention is described in further details below in conjunction with embodiment and accompanying drawing.At this, illustrative examples of the present invention and explanation thereof are used to explain the present invention, but not as a limitation of the invention.
Embodiment one
Present embodiment provides a kind of microwave multichannel file transmitting method.To Fig. 5, describe this microwave multichannel file transmitting method below with reference to Fig. 1 in detail, this method comprises:
Step S110: with the message cutting is a plurality of message fragments of regular length, for each message fragment adds a slice header, comprises sequence number in the described slice header;
Step S120 is distributed to described each passage as the flow of described each passage of weight allocation and according to the flow of described each passage with described message fragment with the ratio of described each bandwidth chahnel.
In step S110, as shown in Figure 2, message is the fragment (Fragments) of regular length by cutting, and slice length (Fragments Size) can be disposed by the user.Usually burst is more little is beneficial to scheduling more, and port flow is even more, but can need more slice header simultaneously and increase expense.With reference to common Ether frame minimum length is 64 bytes, can be 64 bytes with a minute leaf length default setting, but can be by user's modification.In this step, also each message fragment is added a slice header (Header).This slice header comprises a unique sequence number (Sequence number), and opening flag (B) and end mark (E), if promptly this burst is the initial burst of a message then beginning flag is set to 1, if the end burst of a message then end mark be set to 1.In addition, link layer also provides particular protocol number (Protocol ID), distinguishes with thinking with the common message of not cutting into slices (promptly just do not need burst smaller or equal to slice length the time when a message length, message can by former form transmission).The message fragment form wherein specifically defines according to link layer protocol as shown in Figure 3 and different, and the burst payload can be the message of L2/L3 layer.
In step S120, as weight, coordinate the burst flow between each passage with the ratio of each bandwidth chahnel, evenly the message fragment with each message is distributed to each physical channel.Specifically as shown in Figure 4, the bandwidth of passage 1-4 is respectively 100M, 200M, 300M and 400M, and therefore by 1: 2: 3: 4 weight is assigned to the message fragment of each message in passage 1, passage 2, passage 3 and the passage 4.In this step, can also further start the channel adaptive modulation function, redistribute the port weight according to the Bandwidth Dynamic after the channel modulation.Specifically as shown in Figure 5, sense channel alarm situation, comprise channel failure alarm or error code Threshold Crossing Alert, and carry out automatic channel modulation according to testing result, be specially: when certain passage produces alarm, seal this passage, when the alarm of this passage is eliminated, open this passage again automatically by software or hardware signal.Then, adjust described weight according to described automatic channel modulation result and redistribute the flow of described each passage.
Present embodiment is beneficial to balance dispatching by the packet slice technology, makes that the multichannel delivery flow rate is more even, has effectively promoted the bandwidth availability ratio of bound path and has reduced the message processing delay.With the ratio of bandwidth is that weight realizes scheduling control channel flow dynamically, and and the combination of microwave Adaptive Modulation function, be beneficial to happen suddenly or abnormal conditions under still can guarantee the passage maximum throughput, increased the transmission reliability.
Embodiment two
Present embodiment provides another kind of microwave multichannel file transmitting method.To Fig. 8, describe this microwave multichannel file transmitting method below with reference to Fig. 6 in detail, this method comprises:
Step S610: arrange the message priority formation by described priority of messages;
Step S620: according to priority order is a plurality of message fragments of regular length with the message cutting in the described priority query, for each message fragment adds a slice header, comprises sequence number in the described slice header;
Step S630 is distributed to described each passage as the flow of described each passage of weight allocation and according to the flow and the priority orders of described each passage with the message fragment in the described priority query with the ratio of described each bandwidth chahnel.
Present embodiment and embodiment one except that according to priority the order message is carried out cutting and the assignment message burst, remainder is roughly the same, repeats no more.Only specifically describing the part of both differences below, wherein as shown in Figure 7, is the message fragment with regular length with the message in priority query cutting successively in step S620, the message fragment of each message still according to priority order remain in the formation.As shown in Figure 8, in step S630 with the ratio of each bandwidth chahnel as weight, coordinate the burst flow between each passage, evenly the message fragment in the priority query of reporting with each is distributed to each physical channel.If passage also has unnecessary bandwidth after sending the message fragment of high-level formation, then can send the message fragment of low level formation.
Present embodiment can guarantee that to carrying out the message cutting according to the priority of messages order and transmitting message fragment the high message of priority is transmitted earlier and is handled timely.
Embodiment three
Present embodiment provides a kind of microwave multichannel packet transmission device.Below with reference to Fig. 9, describe this microwave multichannel packet transmission device 900 in detail, this device comprises:
Message fragment unit 910, being used for the message cutting is a plurality of message fragments of regular length, for each message fragment adds a slice header, comprises sequence number in the described slice header;
Wherein, as shown in figure 10, message fragment unit 910 comprises: cutting module 911, and being used for the message cutting is a plurality of message fragments of regular length, for example cutting module 911 comprises exchange chip; Slice header generation module 912 is used to generate the slice header corresponding with each message fragment and adds slice header to each message fragment.The form of message fragment comprises slice header and message fragment as shown in Figure 3.Slice header comprises a unique sequence number (Sequence number), opening flag (B) and end mark (E).If this burst is the initial burst of a message then beginning flag is set to 1, if the end burst of a message then end mark be set to 1.In addition, slice header also provides particular protocol number (Protocol ID), distinguish (promptly just do not need burst smaller or equal to slice length the time when a message length, message can by former form transmission) with thinking, wherein specifically define according to link layer protocol and different with the common not message of section.
As shown in figure 11, multichannel scheduling unit 920 comprises: channel capacity distribution module 921 is used for according to the ratio of each bandwidth chahnel flow as described each passage of weight allocation; Message fragment scheduler module 922 is distributed to each passage according to the flow of above-mentioned each passage with described message fragment.Specifically as shown in Figure 4, the bandwidth of passage 1-4 is respectively 100M, 200M, 300M and 400M, and therefore by 1: 2: 3: 4 weight is assigned to the message fragment of each message in passage 1, passage 2, passage 3 and the passage 4.As shown in figure 12, multichannel scheduling unit 920 can also comprise: channel alarm detection module 923 is used for sense channel alarm situation; Automatically channel modulation module 924, the passage corresponding port that will occur the alarm situation according to described testing result is deleted from described aggregation group port and the passage corresponding port that the alarm situation is eliminated is added in the described aggregation group port.921 automatic channel modulation results according to described automatic channel modulation module 924 of channel capacity distribution module adjust described weight and redistribute the flow of described each passage.
Present embodiment is beneficial to balance dispatching by the packet slice technology, makes that the multichannel delivery flow rate is more even, has effectively promoted the bandwidth availability ratio of bound path and has reduced the message processing delay.With the ratio of bandwidth is that weight realizes scheduling control channel flow dynamically, and and the combination of microwave Adaptive Modulation function, be beneficial to happen suddenly or abnormal conditions under still can guarantee the passage maximum throughput, increased the transmission reliability.
Embodiment four
Present embodiment provides another kind of multichannel packet transmission device.Below with reference to Figure 13, describe this multichannel packet transmission device 1300 in detail, this device comprises:
The priority arrangement unit 1310, the structure of all the other each unit is roughly the same, repeats no more except that many for present embodiment and embodiment four.Just message fragment unit 1320 and multichannel scheduling unit 1330 will further carry out the distribution of message cutting and message fragment according to the priority of messages order on function.
Present embodiment can guarantee that to carrying out the message cutting according to the priority of messages order and transmitting message fragment the high message of priority is transmitted earlier and is handled timely.
Embodiment five
Present embodiment provides a kind of microwave multichannel message transfer system.Below with reference to Figure 14, describe this microwave multichannel message transfer system 1400 in detail, this system comprises:
Message fragment dispensing device 1410, be used for the message cutting is a plurality of message fragments of regular length, for each message fragment adds a slice header, comprise sequence number in the slice header, with the ratio of described each bandwidth chahnel flow, and the message fragment in the described priority query is distributed to described each passage according to the flow of described each passage as described each passage of weight allocation;
Message fragment reconstruction unit 1420 is used for receiving described message fragment by described multichannel each passage, and according to described sequence number described message fragment is reassembled as described message.
Wherein, the form of message fragment comprises slice header and message fragment as shown in Figure 3.Slice header comprises a unique sequence number (Sequence number), opening flag (B) and end mark (E).If this burst is the initial burst of a message then beginning flag is set to 1, if the end burst of a message then end mark be set to 1.In addition, slice header also provides particular protocol number (Protocol ID), distinguish (promptly just do not need burst smaller or equal to slice length the time when a message length, message can by former form transmission) with thinking, wherein specifically define according to link layer protocol and different with the common not message of section.With reference to common Ether frame minimum length is 64 bytes, can be 64 bytes with a minute leaf length default setting, but can be by user's modification.
Message fragment dispensing device 1410 as weight, is coordinated the burst flow between each passage with the ratio of each bandwidth chahnel, and evenly the message fragment with each message is distributed to each physical channel.Specifically as shown in Figure 4, the bandwidth of passage 1-4 is respectively 100M, 200M, 300M and 400M, and therefore by 1: 2: 3: 4 weight is assigned to the message fragment of each message in passage 1, passage 2, passage 3 and the passage 4.Message fragment dispensing device 1410 can also be alarmed situation by sense channel, and carry out automatic channel modulation according to testing result and (when certain passage produces alarm, seal this passage by software or hardware signal, when the alarm of this passage is eliminated, open this passage again automatically), adjust described weight according to described automatic channel modulation result then and redistribute the flow of described each passage.In addition, message fragment dispensing device 1410 can also further carry out message cutting and message fragment scheduling according to the priority of messages order.
The principle that message fragment reconstruction unit 1420 increases successively according to sequence number is arranged the order of described message fragment, removes the slice header of message fragment then and described message fragment is formed complete message.Because in the middle of certain burst in the end a burst also do not receive after having received, then this message can not recover immediately, so message fragment reconstruction unit 1420 was gone back the message fragment that buffer memory receives before reconstructed file.
Present embodiment is beneficial to balance dispatching by the packet slice technology, makes that the multichannel delivery flow rate is more even, has effectively promoted the bandwidth availability ratio of bound path and has reduced the message processing delay.With the ratio of bandwidth is that weight realizes scheduling control channel flow dynamically, and and the combination of microwave Adaptive Modulation function, be beneficial to happen suddenly or abnormal conditions under still can guarantee the passage maximum throughput, increased the transmission reliability.
Above-described specific embodiment; purpose of the present invention, technical scheme and beneficial effect are further described; institute is understood that; the above only is specific embodiments of the invention; and be not intended to limit the scope of the invention; within the spirit and principles in the present invention all, any modification of being made, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (12)
1. microwave multichannel file transmitting method is characterized in that this method comprises:
With the message cutting is a plurality of message fragments of regular length, for each message fragment adds a slice header, comprises sequence number in the described slice header;
With the ratio of described each bandwidth chahnel flow as described each passage of weight allocation;
Flow according to described each passage is distributed to described each passage with described message fragment.
2. method according to claim 1 is characterized in that, described slice header also comprises:
Opening flag and end mark are used to indicate the beginning burst of message and finish burst;
Particular protocol number is used for and the length not message of burst difference smaller or equal to described regular length.
3. method according to claim 1 is characterized in that, dispatches described message fragment and the step of described multichannel each passage that described message fragment is sent also comprises:
Sense channel alarm situation;
Carrying out passage according to described testing result modulates automatically;
Adjust described weight and redistribute the flow of described each passage according to the automatic modulation result of described passage.
4. method according to claim 1 is characterized in that, comprises before a plurality of message fragments that with the message cutting are regular length:
Arrange the message priority formation by described priority of messages;
With the message cutting is that a plurality of message fragments of regular length are specially according to priority that order is a plurality of message fragments of regular length with the message cutting in the described priority query.
5. method according to claim 4 is characterized in that:
Flow and priority orders according to described each passage are distributed to described each passage with the message fragment in the described priority query.
6. microwave multichannel packet transmission device is characterized in that this device comprises:
The message fragment unit, being used for the message cutting is a plurality of message fragments of regular length, for each message fragment adds a slice header, comprises sequence number in the described slice header;
The multichannel scheduling unit with the ratio of described each bandwidth chahnel flow as described each passage of weight allocation, and is distributed to described each passage according to the flow of described each passage with described message fragment.
7. device according to claim 6 is characterized in that, described message fragment unit comprises:
The cutting module, being used for the message cutting is a plurality of message fragments of regular length;
The slice header generation module, be used to generate the slice header corresponding and add described slice header to each message fragment with described message fragment, comprise sequence number, opening flag, end mark and particular protocol number in the described slice header, described opening flag and end mark be used to indicate the beginning burst of message and finish burst, and described particular protocol number is used for and the length not message of burst difference smaller or equal to described regular length.
8. device according to claim 6 is characterized in that, described multichannel scheduling unit comprises:
The channel capacity distribution module is used for the ratio of described each bandwidth chahnel flow as described each passage of weight allocation;
The message fragment scheduler module is used for according to the flow of described each passage described message fragment being distributed to described each passage.
9. device according to claim 8 is characterized in that, described multichannel scheduling unit also comprises:
The channel alarm detection module is used for sense channel alarm situation;
Automatically channel modulation module, the passage corresponding port that will occur the alarm situation according to described testing result is deleted from described aggregation group port and the passage corresponding port that the alarm situation is eliminated is added in the described aggregation group port;
Described channel capacity distribution module is then adjusted described weight according to the automatic channel modulation result of described automatic channel modulation module and is redistributed the flow of described each passage.
10. device according to claim 6 is characterized in that, described device also comprises:
The priority arrangement unit is used for arranging the message priority formation by described priority of messages;
Described message fragment unit according to priority order is a plurality of bursts of regular length with the message cutting in the described priority query.
11. device according to claim 10 is characterized in that, described multichannel scheduling unit comprises:
The channel capacity distribution module is used for the ratio of described each bandwidth chahnel flow as described each passage of weight allocation;
The message fragment scheduler module is used for according to the flow of described each passage and priority orders the message fragment of described priority query being distributed to described each passage.
12. a microwave multichannel message transfer system is characterized in that this system comprises:
The message fragment dispensing device, be used for the message cutting is a plurality of message fragments of regular length, for each message fragment adds a slice header, comprise sequence number in the described slice header, according to the ratio of described each bandwidth chahnel flow, and described message fragment is distributed to described each passage according to the flow of described each passage as described each passage of weight allocation;
The message fragment reconstruction unit is used for receiving described message fragment by described multichannel each passage, and according to described sequence number described message fragment is reassembled as described message.
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| CN104219178A (en) * | 2013-06-04 | 2014-12-17 | 中兴通讯股份有限公司 | Openflow-based control message processing method, Openflow-based control message transmitting device, Openflow-based control message receiving device and Openflow-based control message processing system |
| CN103560972A (en) * | 2013-11-22 | 2014-02-05 | 烽火通信科技股份有限公司 | Method for transmitting message by double-uplink enterprise gateway according to bandwidth proportion |
| CN103560972B (en) * | 2013-11-22 | 2016-08-31 | 烽火通信科技股份有限公司 | A kind of double-uplink enterprise gateway according to bandwidth proportion transmits the method for message |
| CN104243142A (en) * | 2014-10-11 | 2014-12-24 | 江阴润玛电子材料股份有限公司 | Information segmented transmission system |
| CN104243135A (en) * | 2014-10-11 | 2014-12-24 | 江阴润玛电子材料股份有限公司 | Information communication method |
| CN105763472A (en) * | 2014-12-18 | 2016-07-13 | 中兴通讯股份有限公司 | Trans-board forwarding method and device |
| CN105162644A (en) * | 2015-07-07 | 2015-12-16 | 深信服网络科技（深圳）有限公司 | Flow control channel monitoring method and system |
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| CN106375239B (en) * | 2016-08-25 | 2019-02-12 | 北京智芯微电子科技有限公司 | A kind of received processing method and processing device of network data |
| WO2018171115A1 (en) * | 2017-03-21 | 2018-09-27 | 中兴通讯股份有限公司 | Quality of service assurance method for fragment and field-programmable gate array |
| CN110213170A (en) * | 2018-02-28 | 2019-09-06 | 华为技术有限公司 | A kind of method and device of message transmissions |
| CN110943919A (en) * | 2018-09-25 | 2020-03-31 | 中兴通讯股份有限公司 | Link aggregation transmission method, device, terminal and storage medium |
| CN117812166A (en) * | 2024-03-01 | 2024-04-02 | 广州市仪美医用家具科技股份有限公司 | UDP-based data transmission method, system, equipment and storage medium |
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