CN102638392A - Data transmission method, data transmission equipment and data transmission system - Google Patents

Data transmission method, data transmission equipment and data transmission system Download PDF

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Publication number
CN102638392A
CN102638392A CN2012100651963A CN201210065196A CN102638392A CN 102638392 A CN102638392 A CN 102638392A CN 2012100651963 A CN2012100651963 A CN 2012100651963A CN 201210065196 A CN201210065196 A CN 201210065196A CN 102638392 A CN102638392 A CN 102638392A
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sctp packet
sctp
packet
receiving device
transfer times
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CN102638392B (en
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刘金晓
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XFusion Digital Technologies Co Ltd
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Huawei Technologies Co Ltd
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Abstract

The invention provides a data transmission method, data transmission equipment and a data transmission system. Transmitting-end equipment transmits M SCTP (stream control transmission protocol) reports to receiving-end equipment, each of the M SCTP reports carries the value of transmission times to lead the receiving-end equipment to obtain the total number M of the SCTP reports by computation according to the value of the transmission times carried in the received N SCTP reports, so that the problem of unnecessary repeated retransmission of lost data blocks due to incapability of accurately knowing transmission quality of a transmission network in the prior art can be avoided to a certain degree, and further, network bandwidth and performance expenditure are reduced, and network resources are saved.

Description

Data transmission method and equipment, system
Technical field
The present invention relates to data transmission technology, relate in particular to data transmission method and equipment, system.
Background technology
SCTP (Stream Control Transmission Protocol is called for short SCTP) through between two SCTP endpoint, setting up coupling, is between two SCTP endpoint reliable transmission to be provided.In order to solve the unreliable and problem of the loss of data that exists of transmission; Prior art has adopted quick retransmission mechanism; For a data message, do not confirm (Selective Acknowledgment is called for short SACK) response if receive the selection of opposite end; This data message is not received in then definite opposite end, need resend this data message.
Yet, owing to the reason that causes transmit leg to resend data message has a lot, for example: the data message mistake that the data message that the unreliability of Network Transmission causes is lost, the transmission link error code causes; And the reason that causes the recipient to receive the data message of repetition also has multiple; For example: the data message that the data message that transmit leg resends, network copy produce etc.; Make above-mentioned quick retransmission mechanism of the prior art, can't accurately know the transmission quality of transmission network, may cause unnecessary quick re-transmission to inject unnecessary load to network; Increase the network bandwidth and performance cost, thereby caused waste of network resources.
Summary of the invention
The embodiment of the invention provides data transmission method and equipment, system, through calculating the SCTP packet number that sending ending equipment sends in the network, so that comparatively accurately know the transmission quality of transmission network.
On the one hand a kind of data transmission method is provided, has comprised:
Sending ending equipment sends M SCTP packet to receiving device; All carry transfer times value in the said M SCTP packet, so that said receiving device calculates the SCTP packet sum M that said sending ending equipment sends according to the transfer times value of carrying in N the SCTP packet that receives;
What said sending ending equipment received that said receiving device sends selects to confirm response with said N SCTP packet corresponding N, and said N selection confirmation sent after responding and receiving a said N SCTP packet by said receiving device;
Wherein, In M the SCTP packet that said sending ending equipment sends; (M-N) individual SCTP packet is represented the SCTP packet that retransmits; The non-initial value of transfer times value that carries in said (M-N) individual SCTP packet, and in the SCTP packet of said re-transmission in the SCTP packet of the same message of expression the transfer times value of carrying be and increase progressively trend.
A kind of data transmission method is provided on the other hand, has comprised:
N the SCTP packet that receiving device receiving end/sending end equipment sends all carries transfer times value in the said N SCTP packet;
Said receiving device sends N the selection corresponding with a said N SCTP packet to said sending ending equipment and confirms response; And
Said receiving device calculates the SCTP packet sum M that said sending ending equipment sends according to the transfer times value of carrying in the said N SCTP packet;
Wherein, In M the SCTP packet that said sending ending equipment sends; (M-N) individual SCTP packet is represented the SCTP packet that retransmits; The non-initial value of transfer times value that carries in said (M-N) individual SCTP packet, and in the SCTP packet of said re-transmission in the SCTP packet of the same message of expression the transfer times value of carrying be and increase progressively trend.
A kind of sending ending equipment is provided on the other hand, has comprised:
Transmitting element; Be used for sending M SCTP packet to receiving device; All carry transfer times value in the said M SCTP packet, so that said receiving device calculates the SCTP packet sum M that said sending ending equipment sends according to the transfer times value of carrying in N the SCTP packet that receives;
Receiving element is used to receive that said receiving device sends and said N SCTP packet corresponding N selects to confirm response, and said N selection confirmation sent after responding and receiving a said N SCTP packet by said receiving device;
Wherein, In M the SCTP packet that said sending ending equipment sends; (M-N) individual SCTP packet is represented the SCTP packet that retransmits; The non-initial value of transfer times value that carries in said (M-N) individual SCTP packet, and in the SCTP packet of said re-transmission in the SCTP packet of the same message of expression the transfer times value of carrying be and increase progressively trend.
A kind of receiving device is provided on the other hand, has comprised:
Receiving element is used for N the SCTP packet that receiving end/sending end equipment sends, and all carries transfer times value in the said N SCTP packet;
Transmitting element is used for sending N the selection corresponding with a said N SCTP packet to said sending ending equipment and confirms response;
Computing unit is used for calculating the SCTP packet sum M that said sending ending equipment sends according to the transfer times value that a said N SCTP packet carries;
Wherein, In M the SCTP packet that said sending ending equipment sends; (M-N) individual SCTP packet is represented the SCTP packet that retransmits; The non-initial value of transfer times value that carries in said (M-N) individual SCTP packet, and in the SCTP packet of said re-transmission in the SCTP packet of the same message of expression the transfer times value of carrying be and increase progressively trend.
A kind of data transmission system is provided on the other hand, has comprised sending ending equipment and receiving device, transmission SCTP SCTP packet Network Based between said sending ending equipment and the said receiving device, wherein:
Said sending ending equipment is used for sending M SCTP packet to said receiving device, all carries transfer times value in the said M SCTP packet; And receive said receiving device receive send behind N the SCTP packet select to confirm response with said N SCTP packet corresponding N;
Said receiving device is used to receive N the SCTP packet that said sending ending equipment sends, and all carries transfer times value in the said N SCTP packet; And to said sending ending equipment transmission N the selection confirmation response corresponding with a said N SCTP packet; And calculate the SCTP packet sum M that said sending ending equipment sends according to the transfer times value of carrying in the said N SCTP packet;
Wherein, In M the SCTP packet that said sending ending equipment sends; (M-N) individual SCTP packet is represented the SCTP packet that retransmits; The non-initial value of transfer times value that carries in said (M-N) individual SCTP packet, and in the SCTP packet of said re-transmission in the SCTP packet of the same message of expression the transfer times value of carrying be and increase progressively trend.
Can know by technique scheme; The embodiment of the invention is sent M SCTP SCTP packet through sending ending equipment to receiving device; All carry transfer times value in the said M SCTP packet, so that said receiving device calculates the SCTP packet sum M that said sending ending equipment sends according to the transfer times value of carrying in N the SCTP packet that receives; Because the message number that receiving terminal precise statistics sending ending equipment sends; Be convenient to effectively distinguish the factor of the transmission quality that influences transmission network; Thereby be convenient to comparatively accurately know the transmission quality of transmission network; And then the problem of the data block of the unnecessary repeatedly retransmission of lost that can avoid causing owing to the transmission quality that can't accurately know transmission network in the prior art, thereby reduced the network bandwidth and performance cost, saved Internet resources.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art; To do one to the accompanying drawing of required use in embodiment or the description of the Prior Art below introduces simply; Obviously, the accompanying drawing in describing below is some embodiments of the present invention, for those of ordinary skills; Under the prerequisite of not paying creative work property, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the sketch map of SCTP present position in the engineering duty group signaling transmission standard of (The Internet Engineering Task Force is called for short IETF) in the Internet;
The schematic flow sheet of the data transmission method that Fig. 2 provides for one embodiment of the invention;
The schematic flow sheet of the data transmission method that Fig. 3 provides for another embodiment of the present invention;
Fig. 4 is based on the field sketch map of the data block of SCTP among the corresponding embodiment of Fig. 2 and Fig. 3;
The schematic flow sheet of the data transmission method that Fig. 5 provides for another embodiment of the present invention;
The structural representation of the sending ending equipment that Fig. 6 provides for another embodiment of the present invention;
The structural representation of the receiving device that Fig. 7 provides for another embodiment of the present invention;
The structural representation of the data transmission system that Fig. 8 provides for another embodiment of the present invention;
The structural representation of the data transmission system that Fig. 9 provides for another embodiment of the present invention.
Embodiment
For the purpose, technical scheme and the advantage that make the embodiment of the invention clearer; To combine the accompanying drawing in the embodiment of the invention below; Technical scheme in the embodiment of the invention is carried out clear, intactly description; Obviously, described embodiment is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.
Understand the embodiment of the invention for ease, at first introduce the several key elements that to introduce in the embodiment of the invention description at this.
SCTP (Stream Control Transmission Protocol is called for short SCTP): SCTP is that (Signal Transport, SIGTRAN) in the agreement its objective is to be implemented in and realizes the reliable news transmission in the IP network in the signaling transmission.
In the signaling transmission standard of the engineering duty group in the Internet (The Internet Engineering Task Force is called for short IETF), the SCTP present position, as shown in Figure 1.Wherein, MTP third level user adaptation layer (MTP level 3 User Adaptation Layer; M3UA)/MTP second level user adaptation layer (MTP level 2User Adaptation Layer; M2UA)/SCCP User Part adaptation layer (SCCP User Adaptation Layer; SUA)/(V5User Adaptation Layer V5UA) is meant the upper-layer protocol that uses Stream Control Transmission Protocol transmission data to ISDNYong Hubufen adaptation layer (ISDN User Adaptation Layer, I UA)/V5 User Part adaptation layer.
SCTP is based on the transport layer protocol on the IP, externally provides connection-oriented, serves based on message bag transmission that wrap, reliable, guarantees that message is orderly, reliable transmission.
Stream Control Transmission Protocol is applied in the communication network widely; At radio network controller (Radio Network Controller; RNC), Universal Media Gateway (Universal Media Gateway, UMG), mobile switching centre (Mobile Switching Center, MSC), service universal grouping wireless service (General Packet Radio Service; GPRS) support node (Serving GPRS Supporting Node; SGSN), (Home Location Register HLR) all has application in the network element such as grade to attaching position register, is mainly used in carrier signaling message.
The schematic flow sheet of the data transmission method that Fig. 2 provides for one embodiment of the invention, as shown in Figure 2, the data transmission method of present embodiment can comprise:
201, sending ending equipment sends M SCTP packet to receiving device; All carry transfer times value in the above-mentioned M SCTP packet, so that above-mentioned receiving device calculates the SCTP packet sum M that above-mentioned sending ending equipment sends according to the transfer times value of carrying in N the SCTP packet that receives;
What 202, above-mentioned sending ending equipment received that above-mentioned receiving device sends selects to confirm response with above-mentioned N SCTP packet corresponding N, and above-mentioned N selection confirmation sent after responding and receiving an above-mentioned N SCTP packet by above-mentioned receiving device.
Wherein, In M the SCTP packet that above-mentioned sending ending equipment sends; (M-N) individual SCTP packet is represented the SCTP packet that retransmits; The non-initial value of transfer times value that carries in above-mentioned (M-N) individual SCTP packet, and in the SCTP packet of above-mentioned re-transmission in the SCTP packet of the same message of expression the transfer times value of carrying be and increase progressively trend.
In an optional execution mode of present embodiment; It is that said transfer times value is used for the said SCTP packet of mark for which time transmission; The initial value of above-mentioned transfer times value can be set to 1; Represent that said SCTP packet is transmission for the first time, sending ending equipment resends a SCTP packet at every turn, and the transfer times value of this SCTP packet then increases by 1.
In another optional execution mode of present embodiment; It is that which time retransmits that said transfer times value is used for the said SCTP packet of mark; The initial value of above-mentioned transfer times value can be set to 0, representes that said SCTP packet is the 0th re-transmission, i.e. the 1st transmission; Sending ending equipment resends a SCTP packet at every turn, and the transfer times value of this SCTP packet then increases by 1.
It is understandable that: SCTP packet can also be referred to as the data block (SCTP data chunk) based on SCTP.In an optional execution mode of present embodiment; Can utilize the existing field in the data block (SCTP data chunk) based on SCTP to carry transfer times value (Transmit count); For example: as shown in Figure 4; Utilize reservation (Reserved) field to carry transfer times value, perhaps can also expand based on the newer field in the data block of SCTP and carry transfer times value, present embodiment does not limit this.
It is thus clear that; In the present embodiment; Send M SCTP packet through sending ending equipment to receiving device, all carry transfer times value in the above-mentioned M SCTP packet, make above-mentioned receiving device to calculate the SCTP packet sum M that above-mentioned sending ending equipment sends according to the transfer times value of carrying in the N that the receives SCTP packet; Because the message number that receiving terminal precise statistics sending ending equipment sends; Be convenient to effectively distinguish the factor of the transmission quality that influences transmission network, thereby be convenient to comparatively accurately know the transmission quality of transmission network, and then the problem of the data block of the unnecessary repeatedly retransmission of lost that can avoid causing owing to the transmission quality that can't accurately know transmission network in the prior art; Thereby reduced the network bandwidth and performance cost, saved Internet resources.
The schematic flow sheet of the data transmission method that Fig. 3 provides for another embodiment of the present invention, as shown in Figure 3, the data transmission method of present embodiment can comprise:
301, N SCTP packet of receiving device receiving end/sending end equipment transmission all carries transfer times value in the above-mentioned N SCTP packet;
302, above-mentioned receiving device sends N the selection corresponding with an above-mentioned N SCTP packet to above-mentioned sending ending equipment and confirms response; And
303, above-mentioned receiving device calculates the SCTP packet sum M that above-mentioned sending ending equipment sends according to the transfer times value of carrying in the above-mentioned N SCTP packet.
Wherein, In M the SCTP packet that above-mentioned sending ending equipment sends; (M-N) individual SCTP packet is represented the SCTP packet that retransmits; The non-initial value of transfer times value that carries in above-mentioned (M-N) individual SCTP packet, and in the SCTP packet of above-mentioned re-transmission in the SCTP packet of the same message of expression the transfer times value of carrying be and increase progressively trend.
In an optional execution mode of present embodiment; It is that said transfer times value is used for the said SCTP packet of mark for which time transmission; The initial value of above-mentioned transfer times value can be set to 1; Represent that said SCTP packet is transmission for the first time, sending ending equipment resends a SCTP packet at every turn, and the transfer times value of this SCTP packet then increases by 1.Accordingly, the transfer times value of carrying in step 303 specifically can be, above-mentioned receiving device the adds up above-mentioned N SCTP packet obtains the SCTP packet sum M that above-mentioned sending ending equipment sends;
In another optional execution mode of present embodiment; It is that which time retransmits that said transfer times value is used for the said SCTP packet of mark; The initial value of above-mentioned transfer times value can be set to 0, representes that said SCTP packet is the 0th re-transmission, i.e. the 1st transmission; Sending ending equipment resends a SCTP packet at every turn, and the transfer times value of this SCTP packet then increases by 1.Accordingly; Step 303 specifically can be, above-mentioned receiving device to the transfer times value of carrying in the above-mentioned N SCTP packet add respectively one handle after; Add up to adding the transfer times value of carrying in N the SCTP packet after handling again, obtain the SCTP packet sum M of above-mentioned sending ending equipment transmission.
It is understandable that: SCTP packet can also be referred to as the data block (SCTP data chunk) based on SCTP.In an optional execution mode of present embodiment; Can utilize the existing field in the data block (SCTP data chunk) based on SCTP to carry transfer times value (Transmit count); For example: as shown in Figure 4; Utilize reservation (Reserved) field to carry transfer times value, perhaps can also expand based on the newer field in the data block of SCTP and carry transfer times value, present embodiment does not limit this.
In an optional execution mode of present embodiment, above-mentioned receiving device can also be further used for: calculate the check value of an above-mentioned N SCTP packet, and calculate the error rate, the above-mentioned error rate is the ratio of S and M; Wherein, S representes the SCTP packet number of check value mistake, and M representes the SCTP packet sum that above-mentioned sending ending equipment sends.
In another optional execution mode of present embodiment, above-mentioned receiving device can also be further used for: calculate packet loss, above-mentioned packet loss is 1-N/M; Wherein, N representes the SCTP packet number that above-mentioned receiving device is received, M representes the SCTP packet sum that above-mentioned sending ending equipment sends.
Further, the error rate that present embodiment can also be further calculates according to receiving device and at least one parameter in the packet loss are carried out corresponding network operation and maintenance, in order to the transmission quality of effective lifting transmission network.
In another optional execution mode of present embodiment; When receiving, above-mentioned receiving device carries identical transfer times value and identical transmission sequence number (Transmission Sequence Number; During TSN) at least two SCTP packet, can confirm that then above-mentioned SCTP packet is duplicated by network node (like router).For example: receive after the SCTP packet; Can check the transfer times value that comprises in this SCTP packet; For same data block (being that TSN equates), if above-mentioned transfer times value equates that then the anomaly of network node (like router) random reproduction data block appears in explanation.
It is thus clear that; In the present embodiment; N SCTP packet through the transmission of receiving device receiving end/sending end equipment; All carry transfer times value in the above-mentioned N SCTP packet; Make above-mentioned receiving device to calculate the SCTP packet sum M that above-mentioned sending ending equipment sends, because the message number that receiving terminal precise statistics sending ending equipment sends is convenient to the factor (for example active zone misclassification bag, packet loss, router duplication bag etc. influence the factor of the transmission quality of transmission network) that effectively differentiation influences the transmission quality of transmission network according to the transfer times value of carrying in the N that the receives SCTP packet; Thereby be convenient to comparatively accurately know the transmission quality of transmission network; And then the problem of the data block of the unnecessary repeatedly retransmission of lost that can avoid causing owing to the transmission quality that can't accurately know transmission network in the prior art, thereby reduced the network bandwidth and performance cost, saved Internet resources.
For the method that makes the embodiment of the invention provide is clearer, below will be with M=6, N=4 is as for example, and wherein Transmit count representes transfer times value.
As shown in Figure 5, sending ending equipment sends 4 SCTP packet, i.e. Data 1 (Transmit count=1), Data 2 (Transmit count=1), Data 3 (Transmit count=1) and Data 4 (Transmit count=1) to receiving device.When receiving device receives SCTP packet, will respond the SACK response to sending ending equipment, like Data among Fig. 51 (Transmit count=1) and Data 2 (Transmit count=1); Because the transmission of IP network is unreliable; SCTP packet may be lost in network; At this moment, equipment does not receive the corresponding SACK response that receiving device is responded on the transmitting terminal in the predefined time, then will resend these SCTP packet; Till the corresponding SACK response that receives the receiving device response, like Data among Fig. 53 (Transmit count=1) and Data 4 (Transmit count=1).
Then, sending ending equipment need resend 2 SCTP packet to receiving device, and the Transmit count of above-mentioned 2 SCTP packet that resend increases by 1, i.e. Data 3 (Transmit count=2) and Data 4 (Transmit count=2).When receiving device receives SCTP packet, will respond the SACK response to sending ending equipment, like Data among Fig. 53 (Transmit count=2) and Data 4 (Transmit count=2).
So far; Receiving device can be according to 4 SCTP packet that receive; Be Data 1 (Transmit count=1) and Data 2 (Transmit count=1) and Data 3 (Transmit count=2) and Data 4 (Transmit count=2); In Transmit count; The SCTP packet that calculates the sending ending equipment transmission adds up to 6, promptly first Data 1 (Transmit count=1), Data 2 (Transmit count=1), Data 3 (Transmit count=1) and Data 4 (Transmit count=1), the Data 3 that resends (Transmit count=2) and the Data 4 (Transmit count=2) that sends.
Need to prove: for aforesaid each method embodiment; For simple description; So it all is expressed as a series of combination of actions, but those skilled in the art should know that the present invention does not receive the restriction of described sequence of movement; Because according to the present invention, some step can adopt other orders or carry out simultaneously.Secondly, those skilled in the art also should know, the embodiment described in the specification all belongs to preferred embodiment, and related action and module might not be that the present invention is necessary.
In the above-described embodiments, the description of each embodiment is all emphasized particularly on different fields, do not have the part that details among certain embodiment, can be referring to the associated description of other embodiment.
The structural representation of the sending ending equipment that Fig. 6 provides for another embodiment of the present invention, as shown in Figure 6, the sending ending equipment of present embodiment can comprise transmitting element 61 and receiving element 62.
Wherein, Transmitting element 61 is used for sending M SCTP packet to receiving device; All carry transfer times value in the above-mentioned M SCTP packet, so that above-mentioned receiving device calculates the SCTP packet sum M that above-mentioned sending ending equipment sends according to the transfer times value of carrying in N the SCTP packet that receives;
Receiving element 62 is used to receive that above-mentioned receiving device sends and above-mentioned N SCTP packet corresponding N selects to confirm response, and above-mentioned N selection confirmation sent after responding and receiving an above-mentioned N SCTP packet by above-mentioned receiving device.
Wherein, Wherein, In M the SCTP packet that above-mentioned sending ending equipment sends; (M-N) individual SCTP packet is represented the SCTP packet that retransmits, the non-initial value of transfer times value that carries in above-mentioned (M-N) individual SCTP packet, and the transfer times value of carrying in the SCTP packet of the same message of expression in the SCTP packet of above-mentioned re-transmission is and increases progressively trend.
In an optional execution mode of present embodiment; It is that said transfer times value is used for the said SCTP packet of mark for which time transmission; The initial value of above-mentioned transfer times value can be set to 1; Represent that said SCTP packet is transmission for the first time, sending ending equipment resends a SCTP packet at every turn, and the transfer times value of this SCTP packet then increases by 1.
In another optional execution mode of present embodiment; It is that which time retransmits that said transfer times value is used for the said SCTP packet of mark; The initial value of above-mentioned transfer times value can be set to 0, representes that said SCTP packet is the 0th re-transmission, i.e. the 1st transmission; Sending ending equipment resends a SCTP packet at every turn, and the transfer times value of this SCTP packet then increases by 1.
It is understandable that: SCTP packet can also be referred to as the data block (SCTP data chunk) based on SCTP, and detailed description can repeat no more referring to the related content among the embodiment of Fig. 2 correspondence here.
In the present embodiment; Sending ending equipment sends M SCTP packet through transmitting element to receiving device; All carry transfer times value in the above-mentioned M SCTP packet; Make above-mentioned receiving device to calculate the SCTP packet sum M that above-mentioned sending ending equipment sends, because the message number that receiving terminal precise statistics sending ending equipment sends is convenient to the factor that effectively differentiation influences the transmission quality of transmission network according to the transfer times value of carrying in the N that the receives SCTP packet; Thereby be convenient to comparatively accurately know the transmission quality of transmission network; And then the problem of the data block of the unnecessary repeatedly retransmission of lost that can avoid causing owing to the transmission quality that can't accurately know transmission network in the prior art, thereby reduced the network bandwidth and performance cost, saved Internet resources.
The structural representation of the receiving device that Fig. 7 provides for another embodiment of the present invention, as shown in Figure 7, the receiving device of present embodiment can comprise receiving element 71, transmitting element 72 and computing unit 73.
Wherein, receiving element 71 is used for N the SCTP packet that receiving end/sending end equipment sends, and all carries transfer times value in the above-mentioned N SCTP packet;
Transmitting element 72 is used for sending N the selection corresponding with an above-mentioned N SCTP packet to above-mentioned sending ending equipment and confirms response;
Computing unit 73 is used for calculating the SCTP packet sum M that above-mentioned sending ending equipment sends according to the transfer times value that an above-mentioned N SCTP packet carries.
Wherein, In M the SCTP packet that above-mentioned sending ending equipment sends; (M-N) individual SCTP packet is represented the SCTP packet that retransmits; The non-initial value of transfer times value that carries in above-mentioned (M-N) individual SCTP packet, and in the SCTP packet of above-mentioned re-transmission in the SCTP packet of the same message of expression the transfer times value of carrying be and increase progressively trend.
In an optional execution mode of present embodiment; It is that said transfer times value is used for the said SCTP packet of mark for which time transmission; The initial value of above-mentioned transfer times value can be set to 1; Represent that said SCTP packet is transmission for the first time, sending ending equipment resends a SCTP packet at every turn, and the transfer times value of this SCTP packet then increases by 1.Accordingly, computing unit 73 transfer times value that an above-mentioned N SCTP packet carries that specifically is used for adding up obtains the SCTP packet sum M that above-mentioned sending ending equipment sends;
In another optional execution mode of present embodiment; It is that which time retransmits that said transfer times value is used for the said SCTP packet of mark; The initial value of above-mentioned transfer times value can be set to 0, representes that said SCTP packet is the 0th re-transmission, i.e. the 1st transmission; Sending ending equipment resends a SCTP packet at every turn, and the transfer times value of this SCTP packet then increases by 1.Accordingly; Computing unit 73 specifically be used for to the transfer times value that an above-mentioned N SCTP packet carries add respectively one handle after; Add up to adding the transfer times value of carrying in N the SCTP packet after handling again, obtain the SCTP packet sum M of above-mentioned sending ending equipment transmission.
It is understandable that: SCTP packet can also be referred to as the data block (SCTP data chunk) based on SCTP, and detailed description can repeat no more referring to the related content among the embodiment of Fig. 3 correspondence here.
In an optional execution mode of present embodiment, computing unit 73 can also be further used for calculating the check value of an above-mentioned N SCTP packet, and calculates the error rate, and the above-mentioned error rate is the ratio of S and M; Wherein, S representes the SCTP packet number of check value mistake, and M representes the SCTP packet sum that above-mentioned sending ending equipment sends.
In another optional execution mode of present embodiment, computing unit 73 can also be further used for calculating packet loss, and above-mentioned packet loss is 1-N/M; Wherein, N representes the SCTP packet number that above-mentioned receiving device is received, M representes the SCTP packet sum that above-mentioned sending ending equipment sends.
Further; Can further include in the present embodiment: the error rate that O&M unit (not shown) is used for calculating according to computing unit 73 and at least one parameter of packet loss; Carry out corresponding network operation and maintenance, in order to the transmission quality of effective lifting transmission network.
In another optional execution mode of present embodiment; When receiving, receiving element 71 carries identical transfer times value and identical transmission sequence number (Transmission Sequence Number; Be called for short TSN) at least two SCTP packet the time, 73 of computing units can confirm that above-mentioned SCTP packet is duplicated by network node (like router).For example: receiving element 71 receives after the SCTP packet; Computing unit 73 can be checked the transfer times value that comprises in this SCTP packet; For same data block (being that TSN equates), if above-mentioned transfer times value equates that then the anomaly of network node random reproduction data block appears in explanation.
In the present embodiment; N the SCTP packet that receiving device sends through receiving element receiving end/sending end equipment; All carry transfer times value in the above-mentioned N SCTP packet; The transfer times value of carrying in N the SCTP packet that makes computing unit to receive according to receiving element calculates the SCTP packet sum M that above-mentioned sending ending equipment sends, because the message number that receiving terminal precise statistics sending ending equipment sends, is convenient to effectively distinguish the factor of the transmission quality that influences transmission network; Thereby be convenient to comparatively accurately know the transmission quality of transmission network; And then the problem of the data block of the unnecessary repeatedly retransmission of lost that can avoid causing owing to the transmission quality that can't accurately know transmission network in the prior art, thereby reduced the network bandwidth and performance cost, saved Internet resources.
The structural representation of the data transmission system that Fig. 8 provides for another embodiment of the present invention; As shown in Figure 8; The data transmission system of present embodiment can comprise sending ending equipment 81 and receiving device 82, transmission SCTP packet Network Based between above-mentioned sending ending equipment 81 and the above-mentioned receiving device 82.Wherein,
Above-mentioned sending ending equipment 81 is used for sending M SCTP packet to above-mentioned receiving device 82, all carries transfer times value in the above-mentioned M SCTP packet; And receive above-mentioned receiving device 82 receive send behind N the SCTP packet select to confirm response with above-mentioned N SCTP packet corresponding N;
Above-mentioned receiving device 82 is used to receive N the SCTP packet that above-mentioned sending ending equipment 81 sends, and all carries transfer times value in the above-mentioned N SCTP packet; And to above-mentioned sending ending equipment 81 transmissions N the selection confirmation response corresponding with an above-mentioned N SCTP packet; And calculate the SCTP packet sum M that above-mentioned sending ending equipment 81 sends according to the transfer times value of carrying in the above-mentioned N SCTP packet.
Wherein, In M the SCTP packet that above-mentioned sending ending equipment 81 sends; (M-N) individual SCTP packet is represented the SCTP packet that retransmits; The non-initial value of transfer times value that carries in above-mentioned (M-N) individual SCTP packet, and in the SCTP packet of above-mentioned re-transmission in the SCTP packet of the same message of expression the transfer times value of carrying be and increase progressively trend.
In an optional execution mode of present embodiment; It is that said transfer times value is used for the said SCTP packet of mark for which time transmission; The initial value of above-mentioned transfer times value can be set to 1; Represent that said SCTP packet is transmission for the first time, sending ending equipment resends a SCTP packet at every turn, and the transfer times value of this SCTP packet then increases by 1.Accordingly, above-mentioned receiving device 82 specifically is used to receive N the SCTP packet that above-mentioned sending ending equipment 81 sends, and all carries transfer times value in the above-mentioned N SCTP packet; And to above-mentioned sending ending equipment 81 transmissions N the selection confirmation response corresponding with an above-mentioned N SCTP packet; And the transfer times value of carrying in the above-mentioned N SCTP packet that adds up, obtain the SCTP packet sum M that above-mentioned sending ending equipment sends;
In another optional execution mode of present embodiment; It is that which time retransmits that said transfer times value is used for the said SCTP packet of mark; The initial value of above-mentioned transfer times value can be set to 0, representes that said SCTP packet is the 0th re-transmission, i.e. the 1st transmission; Sending ending equipment resends a SCTP packet at every turn, and the transfer times value of this SCTP packet then increases by 1.Accordingly, above-mentioned receiving device 82 specifically is used to receive N the SCTP packet that above-mentioned sending ending equipment 81 sends, and all carries transfer times value in the above-mentioned N SCTP packet; And to above-mentioned sending ending equipment 81 transmissions N the selection confirmation response corresponding with an above-mentioned N SCTP packet; And to the transfer times value of carrying in the above-mentioned N SCTP packet add respectively one handle after, add up to adding the transfer times value of carrying in N the SCTP packet after handling again, obtain the SCTP packet sum M of above-mentioned sending ending equipment transmission.
It is understandable that: SCTP packet can also be referred to as the data block (SCTP data chunk) based on SCTP, and detailed description can repeat no more referring to the related content among the embodiment of Fig. 3 and Fig. 4 correspondence here.
In an optional execution mode of present embodiment, receiving device 82 can also be further used for calculating the check value of an above-mentioned N SCTP packet, and calculates the error rate, and the above-mentioned error rate is the ratio of S and M; Wherein, S representes the SCTP packet number of check value mistake, and M representes the SCTP packet sum that above-mentioned sending ending equipment 81 sends.
In another optional execution mode of present embodiment, receiving device 82 can also be further used for calculating packet loss, and above-mentioned packet loss is 1-N/M; Wherein, N representes the SCTP packet number that above-mentioned receiving device 82 is received, M representes the SCTP packet sum that above-mentioned sending ending equipment 81 sends.
Further, present embodiment can further include Network Management Equipment (the not shown in the figures meaning out), is used at least one parameter according to the error rate and packet loss, carries out corresponding network operation and maintenance, in order to the transmission quality of effective lifting transmission network.
In another optional execution mode of present embodiment; As shown in Figure 9; The data transmission system that present embodiment provides can further include network node 91 (like router), is used to duplicate and send the SCTP packet that sending ending equipment 81 sends to receiving device 82; Correspondingly, receiving device 82 can also be further when receiving at least two SCTP packet that carry identical transfer times value and identical TSN, confirm that above-mentioned SCTP packet is duplicated by above-mentioned network node 91.
In the present embodiment; Send M SCTP packet through sending ending equipment to receiving device; All carry transfer times value in the above-mentioned M SCTP packet; Make above-mentioned receiving device to calculate the SCTP packet sum M that above-mentioned sending ending equipment sends, because the message number that receiving terminal precise statistics sending ending equipment sends is convenient to the factor that effectively differentiation influences the transmission quality of transmission network according to the transfer times value of carrying in the N that the receives SCTP packet; Thereby be convenient to comparatively accurately know the transmission quality of transmission network; And then the problem of the data block of the unnecessary repeatedly retransmission of lost that can avoid causing owing to the transmission quality that can't accurately know transmission network in the prior art, thereby reduced the network bandwidth and performance cost, saved Internet resources.
The those skilled in the art can be well understood to, for the convenience described with succinct, the system of foregoing description, the concrete course of work of equipment and unit can repeat no more at this with reference to the corresponding process among the preceding method embodiment.
In several embodiment that the application provided, should be understood that, the system that is disclosed, equipment and method can realize through other mode.For example, apparatus embodiments described above only is schematically, for example; The division of said unit; Only be that a kind of logic function is divided, during actual the realization other dividing mode can be arranged, for example a plurality of unit or assembly can combine or can be integrated into another system; Or some characteristics can ignore, or do not carry out.Another point, the coupling each other that shows or discuss or directly coupling or communication to connect can be through some interfaces, the INDIRECT COUPLING of equipment or unit or communication connect, and can be electrically, machinery or other form.
Said unit as separating component explanation can or can not be physically to separate also, and the parts that show as the unit can be or can not be physical locations also, promptly can be positioned at a place, perhaps also can be distributed on a plurality of NEs.Can realize the purpose of present embodiment scheme according to the needs selection some or all of unit wherein of reality.
In addition, each functional unit in each embodiment of the present invention can be integrated in the processing unit, also can be that the independent physics in each unit exists, and also can be integrated in the unit two or more unit.Above-mentioned integrated unit both can adopt the form of hardware to realize, the form that also can adopt hardware to add SFU software functional unit realizes.
The above-mentioned integrated unit of realizing with the form of SFU software functional unit can be stored in the computer read/write memory medium.Above-mentioned SFU software functional unit is stored in the storage medium, comprise some instructions with so that computer equipment (can be personal computer, server, the perhaps network equipment etc.) carry out the part steps of the said method of each embodiment of the present invention.And aforesaid storage medium comprises: USB flash disk, portable hard drive, read-only memory (Read-Only Memory; Abbreviation ROM), various media that can be program code stored such as random access memory (Random Access Memory is called for short RAM), magnetic disc or CD.
What should explain at last is: above embodiment is only in order to explaining technical scheme of the present invention, but not to its restriction; Although with reference to previous embodiment the present invention has been carried out detailed explanation, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these are revised or replacement, do not make the spirit and the scope of the essence disengaging various embodiments of the present invention technical scheme of relevant art scheme.

Claims (15)

1. a data transmission method is characterized in that, comprising:
Sending ending equipment sends M SCTP SCTP packet to receiving device; All carry transfer times value in the said M SCTP packet, so that said receiving device calculates the SCTP packet sum M that said sending ending equipment sends according to the transfer times value of carrying in N the SCTP packet that receives;
What said sending ending equipment received that said receiving device sends selects to confirm response with said N SCTP packet corresponding N, and said N selection confirmation sent after responding and receiving a said N SCTP packet by said receiving device;
Wherein, In M the SCTP packet that said sending ending equipment sends; (M-N) individual SCTP packet is represented the SCTP packet that retransmits; The non-initial value of transfer times value that carries in said (M-N) individual SCTP packet, and in the SCTP packet of said re-transmission in the SCTP packet of the same message of expression the transfer times value of carrying be and increase progressively trend.
2. method according to claim 1 is characterized in that, carries said transfer times value in the reserved field of said SCTP packet.
3. a data transmission method is characterized in that, comprising:
N the SCTP SCTP packet that receiving device receiving end/sending end equipment sends all carries transfer times value in the said N SCTP packet;
Said receiving device sends N the selection corresponding with a said N SCTP packet to said sending ending equipment and confirms response; And
Said receiving device calculates the SCTP packet sum M that said sending ending equipment sends according to the transfer times value of carrying in the said N SCTP packet;
Wherein, In M the SCTP packet that said sending ending equipment sends; (M-N) individual SCTP packet is represented the SCTP packet that retransmits; The non-initial value of transfer times value that carries in said (M-N) individual SCTP packet, and in the SCTP packet of said re-transmission in the SCTP packet of the same message of expression the transfer times value of carrying be and increase progressively trend.
4. method according to claim 3 is characterized in that, said method also comprises:
Said receiving device calculates the check value of a said N SCTP packet, and calculates the error rate, and the said error rate is the ratio of S and M; Wherein, S representes the SCTP packet number of check value mistake, and M representes the SCTP packet sum that said sending ending equipment sends.
5. according to claim 3 or 4 described methods, it is characterized in that said method also comprises:
Said receiving device calculates packet loss, and said packet loss is 1-N/M; Wherein, N representes the SCTP packet number that said receiving device is received, M representes the SCTP packet sum that said sending ending equipment sends.
6. according to the described method of the arbitrary claim of claim 3~5, it is characterized in that said method also comprises:
When said receiving device receives at least two SCTP packet that carry identical transfer times value and identical transmission sequence number TSN, confirm that said SCTP packet is duplicated by network node.
7. a sending ending equipment is characterized in that, comprising:
Transmitting element; Be used for sending M SCTP SCTP packet to receiving device; All carry transfer times value in the said M SCTP packet, so that said receiving device calculates the SCTP packet sum M that said sending ending equipment sends according to the transfer times value of carrying in N the SCTP packet that receives;
Receiving element is used to receive that said receiving device sends and said N SCTP packet corresponding N selects to confirm response, and said N selection confirmation sent after responding and receiving a said N SCTP packet by said receiving device;
Wherein, In M the SCTP packet that said sending ending equipment sends; (M-N) individual SCTP packet is represented the SCTP packet that retransmits; The non-initial value of transfer times value that carries in said (M-N) individual SCTP packet, and in the SCTP packet of said re-transmission in the SCTP packet of the same message of expression the transfer times value of carrying be and increase progressively trend.
8. a receiving device is characterized in that, comprising:
Receiving element is used for N the SCTP SCTP packet that receiving end/sending end equipment sends, and all carries transfer times value in the said N SCTP packet;
Transmitting element is used for sending N the selection corresponding with a said N SCTP packet to said sending ending equipment and confirms response;
Computing unit is used for calculating the SCTP packet sum M that said sending ending equipment sends according to the transfer times value that a said N SCTP packet carries;
Wherein, In M the SCTP packet that said sending ending equipment sends; (M-N) individual SCTP packet is represented the SCTP packet that retransmits; The non-initial value of transfer times value that carries in said (M-N) individual SCTP packet, and in the SCTP packet of said re-transmission in the SCTP packet of the same message of expression the transfer times value of carrying be and increase progressively trend.
9. receiving device according to claim 8 is characterized in that said computing unit also is used for
Calculate the check value of a said N SCTP packet, and calculate the error rate, the said error rate is the ratio of S and M; Wherein, S representes the SCTP packet number of check value mistake, and M representes the SCTP packet sum that said sending ending equipment sends.
10. according to Claim 8 or 9 described receiving devices, it is characterized in that said computing unit also is used for
Calculate packet loss, said packet loss is 1-N/M; Wherein, N representes the SCTP packet number that said receiving device is received, M representes the SCTP packet sum that said sending ending equipment sends.
11. the described receiving device of arbitrary claim according to Claim 8~10, said computing unit also is used for
When said receiving element receives at least two SCTP packet that carry identical transfer times value and identical TSN, confirm that said SCTP packet is duplicated by network node.
12. a data transmission system is characterized in that, comprises sending ending equipment and receiving device, transmission SCTP SCTP packet Network Based between said sending ending equipment and the said receiving device, wherein:
Said sending ending equipment is used for sending M SCTP packet to said receiving device, all carries transfer times value in the said M SCTP packet; And receive said receiving device receive send behind N the SCTP packet select to confirm response with said N SCTP packet corresponding N;
Said receiving device is used to receive N the SCTP packet that said sending ending equipment sends, and all carries transfer times value in the said N SCTP packet; And to said sending ending equipment transmission N the selection confirmation response corresponding with a said N SCTP packet; And calculate the SCTP packet sum M that said sending ending equipment sends according to the transfer times value of carrying in the said N SCTP packet;
Wherein, In M the SCTP packet that said sending ending equipment sends; (M-N) individual SCTP packet is represented the SCTP packet that retransmits; The non-initial value of transfer times value that carries in said (M-N) individual SCTP packet, and in the SCTP packet of said re-transmission in the SCTP packet of the same message of expression the transfer times value of carrying be and increase progressively trend.
13. system according to claim 12 is characterized in that, said receiving device also is used for:
Calculate the check value of a said N SCTP packet, and calculate the error rate, the said error rate is the ratio of S and M; Wherein, S representes the SCTP packet number of check value mistake, and M representes the SCTP packet sum that said sending ending equipment sends.
14., it is characterized in that said receiving device also is used for according to claim 12 or 13 described systems:
Calculate packet loss, said packet loss is 1-N/M; Wherein, N representes the SCTP packet number that said receiving device is received, M representes the SCTP packet sum that said sending ending equipment sends.
15. according to the described system of the arbitrary claim of claim 12~14, it is characterized in that said system further comprises network node, be used to duplicate and send the SCTP packet that said sending ending equipment sends to said receiving device;
Said receiving device also is used for: when receiving at least two SCTP packet that carry identical transfer times value and identical TSN, confirm that said SCTP packet is duplicated by said network node.
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CN105007238A (en) * 2015-07-22 2015-10-28 中国船舶重工集团公司第七0九研究所 Implementation method and system for lightweight cross-platform message-oriented middle-ware
CN109644091A (en) * 2016-09-05 2019-04-16 索尼公司 Communication device and communication means
CN111010702A (en) * 2018-10-08 2020-04-14 华为技术有限公司 Time delay sensitive network communication method and device thereof

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102869070A (en) * 2012-08-16 2013-01-09 大唐移动通信设备有限公司 Access control method and device of mobility management entity (MME) resource processing entity
CN102869070B (en) * 2012-08-16 2015-04-08 大唐移动通信设备有限公司 Access control method and device of mobility management entity (MME) resource processing entity
CN105007238A (en) * 2015-07-22 2015-10-28 中国船舶重工集团公司第七0九研究所 Implementation method and system for lightweight cross-platform message-oriented middle-ware
CN105007238B (en) * 2015-07-22 2018-04-24 中国船舶重工集团公司第七0九研究所 The realization method and system of the cross-platform message-oriented middleware of lightweight
CN109644091A (en) * 2016-09-05 2019-04-16 索尼公司 Communication device and communication means
CN109644091B (en) * 2016-09-05 2022-05-27 索尼公司 Communication apparatus and communication method
CN111010702A (en) * 2018-10-08 2020-04-14 华为技术有限公司 Time delay sensitive network communication method and device thereof
CN111010702B (en) * 2018-10-08 2021-06-29 华为技术有限公司 Time delay sensitive network communication method and device thereof
US11528239B2 (en) 2018-10-08 2022-12-13 Huawei Technologies Co., Ltd. Time-sensitive networking communication method and apparatus for configuring virtual switching node

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