CN104301168A - Message transmission delay measurement method and system - Google Patents
Message transmission delay measurement method and system Download PDFInfo
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- CN104301168A CN104301168A CN201310327128.4A CN201310327128A CN104301168A CN 104301168 A CN104301168 A CN 104301168A CN 201310327128 A CN201310327128 A CN 201310327128A CN 104301168 A CN104301168 A CN 104301168A
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Abstract
The embodiment of the invention discloses a message transmission delay measurement method comprising the following steps: a piece of sending equipment sends a message to a transmission route, wherein the transmission route is a transmission route between the sending equipment and a piece of receiving equipment; each piece of transmission equipment of the transmission route loads the processing delay of the transmission equipment to a pre-specified storage field in the message, and transmits the loaded message in the transmission direction from the sending equipment to the receiving equipment, wherein the processing delay refers to the processing time used when the transmission equipment transmits the message; and the receiving equipment receives the message transmitted through the transmission route, and measures the transmission delay of the transmission of the message from the sending equipment to the receiving equipment according to the processing delay included in the storage field. Accordingly, the embodiment of the invention discloses a related system. By adopting the method and the system disclosed by the embodiment of the invention, the cost of a communication system can be reduced.
Description
Technical field
The present invention relates to the communications field, particularly relate to a kind of message transmissions time-delay measuring method and system.
Background technology
Current existence much to the real-time of data and the very strict communication system of reliability requirement, as electric intelligent transformer substation system, data collection and transfering system, intelligent robot system and high-speed motion control system etc.Wherein, the propagation delay time of message is the performance that these systems need focus measurement.
And at present in a communications system, mainly by realizing measuring the propagation delay time of message at the precise clock synchronization consensus standard IEEE1588 of network measure and control system.The both sides of concrete transmitting-receiving message are by deployed at one end 1 master clock, and the other end disposes 1588 synchronised clocks, to make the cycle accurate of the communication equipment receiving and dispatching message both sides synchronous, thus drawn the propagation delay time of this message by the timestamp comparing receiving-transmitting sides.
In technique scheme, owing to disposing 1588 master clocks and 1588 synchronised clocks, need to increase extra equipment and realize deployment 1588 master clock and 1588 synchronously, thus the cost compare of communication system is high.
Summary of the invention
Embodiments provide a kind of message transmissions time-delay measuring method and system, the cost of communication system can be reduced.
First aspect, the embodiment of the present invention provides a kind of message transmissions time-delay measuring method, comprising:
Transmitting apparatus sends message to transmission route, and described transmission route is the transmission route between described transmitting apparatus and described receiving equipment;
The processing delay of this transmission equipment is loaded on preassigned storage field in described message by each transmission equipment of described transmission route, and the described message after loading is transmitted according to the transmission direction of described transmitting apparatus to described receiving equipment, the time handled when described processing delay refers to that described transmission equipment transmits described message;
Described receiving equipment receives the described message of described transmission route transmission, and according to the described processing delay that described storage field comprises, measures described message transfers to described receiving equipment propagation delay time from described transmitting apparatus.
Second aspect, the embodiment of the present invention provides a kind of message transmissions latency measurement system, comprise: at least one transmission equipment of transmitting apparatus and receiving equipment, at least one transmission equipment described is the transmission equipment that the transmission route between described transmitting apparatus and described receiving equipment comprises, wherein:
Described transmitting apparatus, for sending message to transmission route;
Described transmission equipment, for the processing delay of this transmission equipment being loaded on preassigned storage field in described message, and the described message after loading is transmitted according to the transmission direction of described transmitting apparatus to described receiving equipment, the time handled when described processing delay refers to that described transmission equipment transmits described message;
Described receiving equipment, for receiving the described message of described transmission route transmission, and according to the described processing delay that described storage field comprises, measures described message transfers to described receiving equipment propagation delay time from described transmitting apparatus.
In technique scheme, owing to being that processing delay is loaded in message by transmission equipment, receiving equipment measures according to the processing delay of packet storage described message to transfer to described receiving equipment propagation delay time from described transmitting apparatus again, so just do not need to increase extra equipment, thus the cost of communication system can be reduced.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the schematic flow sheet of a kind of message transmissions time-delay measuring method that the embodiment of the present invention provides;
Fig. 2 is the schematic flow sheet of the another kind of message transmissions time-delay measuring method that the embodiment of the present invention provides
Fig. 3 is that the embodiment of the present invention provides a kind of optional transmission route schematic diagram;
Fig. 4 is the structural representation of a kind of message transmissions latency measurement system that the embodiment of the present invention provides.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
The embodiment of the present invention is not construed as limiting the form of message and/or content, and message can be any message transmitted in communication system, such as: the messages such as data sampling message, data processing message.
The embodiment of the present invention is also not construed as limiting transmission route, such as: transmission route can be Ethernet, wireless network or G bit rate EPON (Gigabit-Capable Passive Optical Network G, etc. GPON) transmission route in network, the transmission equipment that transmission route comprises is not construed as limiting too, such as, transmission equipment can be the transmission equipment such as switching equipment, routing device.In addition, the embodiment of the present invention is also not construed as limiting transmitting apparatus and receiving equipment, such as: transmitting apparatus can be any equipment that can process message and send message, e.g., and the communication equipments such as computer, server or data acquisition equipment.Receiving equipment also can be any equipment that can process message and receive message, e.g., and the communication equipments such as computer, server or data processing equipment.Wherein, above-mentioned transmitting apparatus can also be specifically that the information that electric current etc. collect merges, and sends fusing device (merging unit, MU), and above-mentioned receiving equipment can be specifically intelligent grid protective device for function for by voltage.
Fig. 1 is the schematic flow sheet of a kind of message transmissions time-delay measuring method that the embodiment of the present invention provides, and as shown in Figure 1, comprises the following steps:
101, transmitting apparatus sends message to transmission route, and described transmission route is the transmission route between described transmitting apparatus and described receiving equipment.
Above-mentioned transmission route is when can be specifically transmitting apparatus send message to receiving equipment, and message needs the transmission route of process, and this transmission route also can be by the transmission equipment unrestricted choice in transmission line, also can be specified by transmitting apparatus.Such as, above-mentioned message can comprise the address information of receiving equipment, and above-mentioned message is sent in above-mentioned transmission route by transmitting apparatus, and this transmission route just can carry out route according to this address information, so that this message is sent to receiving equipment.
102, the processing delay of this transmission equipment is loaded on preassigned storage field in described message by each transmission equipment of transmission route, and the described message after loading is transmitted according to the transmission direction of described transmitting apparatus to described receiving equipment, the time handled when described processing delay refers to that described transmission equipment transmits described message.
Wherein, above-mentioned storage field can be the field of being specified by consensus standard, also can be user operation and the field that sets, field that can also be reserved in real time business message, can also the reserved field of bearing protocol.This storage field can be any field reserved in the message specified in consensus standard.Such as: the reserved field that the load of message comprises, also can be the reserved field that heading comprises.
Step 102 can be specifically be interpreted as that each transmission equipment of transmission route is when receiving above-mentioned message, start timing, and this message is processed, process rear stopping timing, and the time this timing obtained is as the processing delay of this transmission equipment, and this processing delay is loaded on the storage field of message, then the message of loading processing time delay is sent to next one equipment of jumping.
Optionally, the above-mentioned processing delay by this transmission equipment is loaded on preassigned storage field in described message and specifically can comprises:
The processing delay of this transmission equipment is superimposed on the processing delay of the upper hop equipment of this transmission equipment in preassigned storage field in described message; Such receiving equipment gets message just can directly obtain total processing delay.Or
Optionally, the above-mentioned processing delay by this transmission equipment is loaded on preassigned storage field in described message and specifically can comprises:
The processing delay of this transmission equipment independently to be deposited to described message in preassigned storage field.Namely, when receiving equipment receives message, store field and comprise multiple processing delay, receiving equipment calculates total processing delay of this multiple processing delay again.
103, receiving equipment receives the described message of described transmission route transmission, and according to the described processing delay that described storage field comprises, measures described message transfers to described receiving equipment propagation delay time from described transmitting apparatus.
Such as: above-mentioned transmission route comprises: transmission equipment A, transmission equipment B and transmission equipment C, described transmitting apparatus is that transmitting apparatus is to transmission equipment A to transmission equipment B to transmission equipment C to receiving equipment to the transmission direction of described receiving equipment.Transmitting apparatus sends above-mentioned message to transmission equipment A, the processing delay of transmission equipment A is loaded on the storage field of message by transmission equipment A, again the message after loading is sent to transmission equipment B, the processing delay of transmission equipment B is loaded on the storage field of message by transmission equipment B, again by load after message to transmission equipment C, the processing delay of transmission equipment C is loaded on the storage field of message by transmission equipment C, then by the message after loading to receiving equipment.The message that such receiving equipment receives just comprises the processing delay of transmission equipment A, transmission equipment B and transmission equipment C, and receiving equipment measures according to these processing delay described message to transfer to described receiving equipment propagation delay time from described transmitting apparatus again.
Wherein, the described processing delay that receiving equipment comprises according to described storage field, measure the propagation delay time that described message transfers to described receiving equipment from described transmitting apparatus and specifically can comprise:
The chain circuit transmission time delay sum of the processing delay that above-mentioned storage field comprises by receiving equipment and described transmission route transfers to the propagation delay time of described receiving equipment as described message from described transmitting apparatus.
Wherein, the chain circuit transmission time delay of transmission route described above can obtain in advance, also can be calculated by the linkage length of transmission route, can also be that the chain circuit transmission time delay of described transmission route is loaded in the storage field of above-mentioned message by above-mentioned transmission equipment.Such as: the described processing delay that above-mentioned receiving equipment comprises according to described storage field, measure described message transfers to described receiving equipment propagation delay time from described transmitting apparatus, specifically can comprise:
The described processing delay that described storage field comprises by receiving equipment transfers to the propagation delay time of described receiving equipment with the chain circuit transmission time delay sum of the described transmission route obtained in advance as described message from described transmitting apparatus.Can be specifically first obtain all processing delay sums storing field and comprise, namely the summation of the processing delay of all transmission equipments is got, specifically can to calculate in field process processing delay being loaded on store by transmission equipment, also can be receiving equipment when receiving message, be calculated by receiving equipment.Again all processing delay sums that storage field comprises are added the chain circuit transmission time delay of the described transmission route obtained in advance, thus obtain described message transfers to described receiving equipment propagation delay time from described transmitting apparatus.
Wherein, the described processing delay that receiving equipment comprises according to described storage field, measure the propagation delay time that described message transfers to described receiving equipment from described transmitting apparatus and specifically can comprise:
The described processing delay that described storage field comprises by receiving equipment transfers to the propagation delay time of described receiving equipment as described message from described transmitting apparatus.Namely message is specifically as follows the processing delay sum of all transmission equipments from the propagation delay time that described transmitting apparatus transfers to described receiving equipment.Processing delay sum is sent to miscellaneous equipment by receiving equipment again, is transferred to the propagation delay time of described receiving equipment by the chain circuit transmission time delay sum of miscellaneous equipment computing time delay sum and described transmission route as final described message from described transmitting apparatus.
Optionally, the processing delay of this transmission equipment is loaded on preassigned storage field in described message by each transmission equipment of above-mentioned transmission route, specifically can comprise:
The processing delay of this transmission equipment and the first chain circuit transmission time delay of this transmission equipment are loaded on the storage field of designated store time delay in advance in described message by each transmission equipment of transmission route; First chain circuit transmission time delay of this transmission equipment refers to transmit described message to the chain circuit transmission time delay between the upper hop equipment of this transmission equipment and this transmission equipment;
The described processing delay that above-mentioned receiving equipment comprises according to described storage field, measure described message transfers to described receiving equipment propagation delay time from described transmitting apparatus, specifically can comprise:
The described processing delay that described storage field comprises by described receiving equipment, described first chain circuit transmission time delay and the second chain circuit transmission time delay sum transfer to the propagation delay time of described receiving equipment as described message from described transmitting apparatus; Chain circuit transmission time delay between last transmission equipment that described second chain circuit transmission time delay is transmission direction described in described receiving equipment and described transmission route.
Such as: above-mentioned transmission route comprises: transmission equipment A, transmission equipment B and transmission equipment C, described transmitting apparatus is that transmitting apparatus is to transmission equipment A to transmission equipment B to transmission equipment C to receiving equipment to the transmission direction of described receiving equipment.Transmitting apparatus sends above-mentioned message to transmission equipment A, the processing delay of transmission equipment A and the first chain circuit transmission time delay (being the chain-circuit time delay of transmitting apparatus to transmission equipment A) are loaded on the storage field of message by transmission equipment A, again the message after loading is sent to transmission equipment B, the processing delay of transmission equipment B and the first chain circuit transmission time delay (being the chain-circuit time delay of transmission equipment A to transmission equipment B) are loaded on the storage field of message by transmission equipment B, again by load after message to transmission equipment C, the processing delay of transmission equipment C and the first chain circuit transmission time delay (being the chain-circuit time delay of transmission equipment B to transmission equipment C) are loaded on the storage field of message by transmission equipment C, again by load after message to receiving equipment.The message received just just can be comprised the processing delay of transmission equipment A, transmission equipment B and transmission equipment C, the first propagation delay time and the second chain circuit transmission time delay (namely transmission equipment C is to the chain-circuit time delay of receiving equipment) sum transfer to described receiving equipment propagation delay time as described message from described transmitting apparatus by such receiving equipment.
Optionally, the processing delay of this transmission equipment is loaded on preassigned storage field in described message by each transmission equipment of above-mentioned transmission route, specifically can comprise:
The processing delay of this transmission equipment and the 3rd chain circuit transmission time delay of this transmission equipment are loaded on the storage field of designated store time delay in advance in described message by each transmission equipment of transmission route; 3rd chain circuit transmission time delay of this transmission equipment refers to transmit described message to the chain circuit transmission time delay between the next-hop device of this transmission equipment and this transmission equipment;
The described processing delay that above-mentioned receiving equipment comprises according to described storage field, measure described message transfers to described receiving equipment propagation delay time from described transmitting apparatus, specifically can comprise:
The described processing delay that described storage field comprises by receiving equipment, described 3rd chain circuit transmission time delay and the 4th chain circuit transmission time delay sum transfer to the propagation delay time of described receiving equipment as described message from described transmitting apparatus; Chain circuit transmission time delay between first transmission equipment that described 4th chain circuit transmission time delay is transmission direction described in described transmitting apparatus and described transmission route.
Such as: above-mentioned transmission route comprises: transmission equipment A, transmission equipment B and transmission equipment C, described transmitting apparatus is that transmitting apparatus is to transmission equipment A to transmission equipment B to transmission equipment C to receiving equipment to the transmission direction of described receiving equipment.Transmitting apparatus sends above-mentioned message to transmission equipment A, the processing delay of transmission equipment A and the 3rd chain circuit transmission time delay (being the chain-circuit time delay of transmission equipment A to transmission equipment B) are loaded on the storage field of message by transmission equipment A, again the message after loading is sent to transmission equipment B, the processing delay of transmission equipment B and the 3rd chain circuit transmission time delay (being the chain-circuit time delay of transmission equipment B to transmission equipment C) are loaded on the storage field of message by transmission equipment B, again by load after message to transmission equipment C, the processing delay of transmission equipment C and the 3rd chain circuit transmission time delay (being the chain-circuit time delay of transmission equipment C to receiving equipment) are loaded on the storage field of message by transmission equipment C, again by load after message to receiving equipment.The message received just just can be comprised the processing delay of transmission equipment A, transmission equipment B and transmission equipment C, the 3rd propagation delay time and the 4th propagation delay time (namely transmitting apparatus is to the chain-circuit time delay of transmission equipment A) sum transfer to described receiving equipment propagation delay time as described message from described transmitting apparatus by such receiving equipment.
Wherein, above-mentioned chain-circuit time delay is the time delay that the link that comprises of transmission route produces, and chain-circuit time delay can be specifically be direct ratio with the length of link, namely knows that the length of link just can obtain the chain-circuit time delay of this link.Above-mentioned link can be specifically light or netting twine.Such as: chain-circuit time delay equals link range divided by the light velocity.
In technique scheme, owing to being that processing delay is loaded in message by transmission equipment, receiving equipment measures according to the processing delay of packet storage described message to transfer to described receiving equipment propagation delay time from described transmitting apparatus again, so just do not need to increase extra equipment, thus the cost of communication system can be reduced.
Fig. 2 is the schematic flow sheet of the another kind of message transmissions time-delay measuring method that the embodiment of the present invention provides, and as shown in Figure 2, comprising:
201, transmitting apparatus sends message to transmission route, and described transmission route is the transmission route between described transmitting apparatus and described receiving equipment.
202, the processing delay of this transmission equipment is superimposed on the processing delay of the upper hop equipment of this transmission equipment in preassigned storage field in described message by each transmission equipment of transmission route, and the described message after superposition is transmitted according to the transmission direction of described transmitting apparatus to described receiving equipment, the time handled when described processing delay refers to that described transmission equipment transmits described message; Described upper hop equipment refers to that the described message of transmission is to the equipment of this transmission equipment.
Optionally, above-mentioned superposition can be specifically be interpreted as to be superimposed on the processing delay of upper hop equipment by processing delay in the mode of increment.
Optionally, above-mentioned storage field specifically can comprise unit field and time delay field, and wherein, unit field is for representing the unit of numeral in time delay field.Specifically can be as shown in the table:
| bit | definition |
| 31-30 | unit field: 00:1 xX; 01:100 aA; 10:10 aA; 11:1 aA(acquiescence). |
| 29-0 | time delay field: |
Wherein, store field and comprise 0-31 position bit, 0-29 position bit represents time delay field, and 30-31 position bit represents unit field.Wherein, above-mentioned XX represents the unit (such as: millisecond or microsecond) of time delay, and above-mentioned AA represents another time delay unit (such as, nanosecond).When above-mentioned XX represents microsecond, and above-mentioned AA is when representing nanosecond, 30-31 position bit represents when being 00 that the unit of time delay field is 1 microsecond, 30-31 position bit represents when being 01 that the unit of time delay field was 100 nanoseconds, 30-31 position bit represents when being 10 that the unit of time delay field was 10 nanoseconds, represents that the unit of time delay field was 1 nanosecond when 30-31 position bit is 11.
Optionally, above-mentioned storage field can not also comprise unit field, namely can adopt default fields, such as: millisecond or microsecond or nanosecond.Namely store case and can only include numeral, and do not comprise unit, when receiving equipment receives above-mentioned numeral, adopt the unit of acquiescence to carry out reading and identify.
203, receiving equipment receives the described message of described transmission route transmission, and according to the described processing delay that described storage field comprises, measures described message transfers to described receiving equipment propagation delay time from described transmitting apparatus.
Such as: above-mentioned transmission route comprises: transmission equipment A, transmission equipment B and transmission equipment C, described transmitting apparatus is that transmitting apparatus is to transmission equipment A to transmission equipment B to transmission equipment C to receiving equipment to the transmission direction of described receiving equipment.Transmitting apparatus sends above-mentioned message to transmission equipment A, the processing delay A of transmission equipment A is superimposed on the processing delay of the upper hop equipment storing transmission equipment A in field in described message by transmission equipment A, upper hop equipment due to transmission equipment A is transmitting apparatus, namely the processing delay of the upper hop equipment of transmission equipment A is 0, namely in packet storage field through transmission equipment A transmit after, total processing delay is the processing delay A of transmission equipment A, then is sent to transmission equipment B by the message after superposition; The processing delay B of transmission equipment B is superimposed on the processing delay A of the upper hop equipment (i.e. transmission equipment A) storing transmission equipment B in field in described message by transmission equipment B, namely in packet storage field through transmission equipment B transmit after, total processing delay is the processing delay A+ processing delay B of transmission equipment A, then is sent to transmission equipment C by the message after loading; The processing delay C of transmission equipment C is superimposed on the processing delay A+ processing delay B of the upper hop equipment (i.e. transmission equipment B) storing transmission equipment C in field in described message by transmission equipment C, namely in packet storage field through transmission equipment C transmit after, total processing delay is the processing delay A+ processing delay B+ processing delay C of transmission equipment A, then is sent to receiving equipment by the message after loading.The message that such receiving equipment receives just can obtain processing delay A+ processing delay B+ processing delay C, then measures according to these processing delay described message to transfer to described receiving equipment propagation delay time from described transmitting apparatus.
As the optional execution mode of one, the described processing delay that above-mentioned receiving equipment comprises according to described storage field, measure described message transfers to described receiving equipment propagation delay time from described transmitting apparatus, specifically can comprise:
The described processing delay that described storage field comprises by receiving equipment transfers to the propagation delay time of described receiving equipment with the chain circuit transmission time delay sum of the described transmission route obtained in advance as described message from described transmitting apparatus; Or
The described processing delay that described storage field comprises by described receiving equipment transfers to the propagation delay time of described receiving equipment as described message from described transmitting apparatus.
As the optional execution mode of one, the processing delay of this transmission equipment is superimposed on the processing delay of the upper hop equipment of this transmission equipment in preassigned storage field in described message by each transmission equipment of above-mentioned transmission route, specifically can comprise:
The processing delay of this transmission equipment is superimposed on the processing delay of the upper hop equipment of this transmission equipment in preassigned storage field in described message by each transmission equipment of above-mentioned transmission route, and is superimposed to by the first chain circuit transmission time delay of this transmission equipment on the first chain circuit transmission time delay of the upper hop equipment of this transmission equipment in preassigned storage field in described message.
Namely, when message transmissions is to receiving equipment, stores field and comprise two time delays, namely comprise total processing delay (the processing delay sum of each transmission equipment) and total first chain circuit transmission time delay (the first chain circuit transmission time delay sum of each transmission equipment).The message received just just can be comprised total processing delay, total first chain circuit transmission time delay and the second chain circuit transmission time delay sum transfer to described receiving equipment propagation delay time as described message from described transmitting apparatus by such receiving equipment; Chain circuit transmission time delay between last transmission equipment that described second chain circuit transmission time delay is transmission direction described in described receiving equipment and described transmission route.
Above-mentioned storage field specifically can comprise the first unit field, the first time delay field, the second unit field and the second time delay field.Such as: as shown in the table:
| bit | definition |
| 31-30 | second unit field: 00:1 xX; 01:100 aA; 10:10 aA; 11:1 aA(acquiescence). |
| 29-16 | second time delay field: 0 ~ 16383 |
| 15-14 | first unit field: 00:1 xX; 01:100 aA; 10:10 aA; 11:1 aA(acquiescence). |
| 13-0 | first time delay field: 0 ~ 16383 |
Wherein, above-mentioned first time delay field can be specifically for stores processor time delay, and above-mentioned second time delay field specifically may be used for storing chain circuit transmission time delay.Store field and comprise 0-31 position bit, 0-13 position bit represents the first time delay field, and 14-15 position bit represents the first unit field, and 16-29 position bit represents the first time delay field, and 30-31 position bit represents the first unit field.Wherein, above-mentioned XX represents the unit (such as: millisecond or microsecond) of time delay, and above-mentioned AA represents another time delay unit (such as, nanosecond).
As the optional execution mode of one, the processing delay of this transmission equipment is superimposed on the processing delay of the upper hop equipment of this transmission equipment in preassigned storage field in described message by each transmission equipment of above-mentioned transmission route, specifically can comprise:
The processing delay of this transmission equipment and the first chain circuit transmission time delay are added and obtain first-phase and add time delay by each transmission equipment of above-mentioned transmission route, and the first-phase of this transmission equipment are added the first-phase that time delay is superimposed to the upper hop equipment of this transmission equipment in preassigned storage field in described message and add in time delay.
Wherein, each transmission equipment being received is processing delay and the first chain circuit transmission time delay are added to obtain first-phase and add time delay, then first-phase is added the first-phase that time delay is superimposed to the upper hop equipment of this transmission equipment in preassigned storage field in described message and add in time delay.Namely only can comprise an overall delay in the message that receiving equipment receives, this overall delay is the processing delay of each transmission equipment and the summation of the first chain circuit transmission time delay.The message received just just can be comprised overall delay and the second chain circuit transmission time delay sum transfer to described receiving equipment propagation delay time as described message from described transmitting apparatus by such receiving equipment; Chain circuit transmission time delay between last transmission equipment that described second chain circuit transmission time delay is transmission direction described in described receiving equipment and described transmission route.
As the optional execution mode of one, the processing delay of this transmission equipment is superimposed on the processing delay of the upper hop equipment of this transmission equipment in preassigned storage field in described message by each transmission equipment of above-mentioned transmission route, specifically can comprise:
The processing delay of this transmission equipment is superimposed on the processing delay of the upper hop equipment of this transmission equipment in preassigned storage field in described message by each transmission equipment of above-mentioned transmission route, and is superimposed to by the 3rd chain circuit transmission time delay of this transmission equipment on the 3rd chain circuit transmission time delay of the upper hop equipment of this transmission equipment in preassigned storage field in described message.3rd chain circuit transmission time delay of this transmission equipment refers to transmit described message to the chain circuit transmission time delay between the next-hop device of this transmission equipment and this transmission equipment;
Namely, when message transmissions is to receiving equipment, stores field and comprise two time delays, namely comprise total processing delay (the processing delay sum of each transmission equipment) and total 3rd chain circuit transmission time delay (the 3rd tunnel propagation delay time sum of each transmission equipment).The message received just just can be comprised total processing delay, total 3rd chain circuit transmission time delay and the 4th propagation delay time sum transfer to described receiving equipment propagation delay time as described message from described transmitting apparatus by such receiving equipment.Chain circuit transmission time delay between first transmission equipment that described 4th chain circuit transmission time delay is transmission direction described in described transmitting apparatus and described transmission route.
As the optional execution mode of one, the processing delay of this transmission equipment is superimposed on the processing delay of the upper hop equipment of this transmission equipment in preassigned storage field in described message by each transmission equipment of above-mentioned transmission route, specifically can comprise:
The processing delay of this transmission equipment and the 3rd chain circuit transmission time delay are added and obtain second-phase and add time delay by each transmission equipment of above-mentioned transmission route, and the second-phase of this transmission equipment are added the second-phase that time delay is superimposed to the upper hop equipment of this transmission equipment in preassigned storage field in described message and add in time delay.
Wherein, each transmission equipment being received is processing delay and the 3rd chain circuit transmission time delay are added to obtain second-phase and add time delay, then second-phase is added the second-phase that time delay is superimposed to the next-hop device of this transmission equipment in preassigned storage field in described message and add in time delay.Namely only can comprise an overall delay in the message that receiving equipment receives, this overall delay is the processing delay of each transmission equipment and the summation of the 3rd chain circuit transmission time delay.The message received just just can be comprised overall delay and the 4th propagation delay time sum transfer to described receiving equipment propagation delay time as described message from described transmitting apparatus by such receiving equipment.Chain circuit transmission time delay between first transmission equipment that described 4th chain circuit transmission time delay is transmission direction described in described transmitting apparatus and described transmission route.
In technique scheme, above embodiment basis on achieve the execution mode of plurality of optional, and the cost reducing communication system can be realized.
Be that example is illustrated with sample value (Sample Value, the SV) message in electric intelligent system below:
Wherein, Fig. 3 is the transmission route figure of SV message transmissions in this example, source device (can be understood as transmitting apparatus) by Ethernet transmission route by SV message transmissions to sink device (can be understood as receiving equipment), wherein, Ethernet transmission route comprises ethernet device 1 ... ethernet device n and ethernet device n+1.
SV message is sent to too net equipment 1 by source device, wherein, produce chain circuit transmission time delay t1 in transmitting apparatus, too net equipment 1 receives SV message, and starts timing, this SV message is processed, when processing, stop timing, and the processing time Δ t1 this timing obtained and chain circuit transmission time delay t1 is loaded on the storage field of this SV message, and the SV message after loading is sent to next ethernet device, this ethernet device carries out the process identical with ethernet device 1; When SV message transmissions is to ethernet device n, the chain circuit transmission time delay T that the storage field of this SV message comprises is chain circuit transmission time delay t1+ chain circuit transmission time delay t2+ ... + chain circuit transmission time delay tn-1, processing delay Δ T are Δ t1+ processing time, Δ processing time t2+ ... + processing time Δ tn-1; Too net equipment n receives SV message, and start timing, this SV message is processed, when processing, stop timing, and the processing time Δ tn this timing obtained and chain circuit transmission time delay tn is loaded on the storage field of this SV message, and the SV message after loading is sent to next ethernet device n+1; Too net equipment n+1 receives SV message, and starts timing, processes this SV message, when processing, stop timing, and the processing time Δ tn+1 this timing obtained and chain circuit transmission time delay tn+1 is loaded on the storage field of this SV message, and the SV message after loading is sent to sink device; During the SV message that sink device receives, the chain circuit transmission time delay T that the storage field of this SV message just comprises is chain circuit transmission time delay t1+ chain circuit transmission time delay t2+ ... + chain circuit transmission time delay tn-1+ chain circuit transmission time delay tn+ chain circuit transmission time delay tn+1, processing delay Δ T are Δ t1+ processing time, Δ processing time t2+ ... Δ tn-1++processing time, Δ processing time tn+ processing time Δ tn+1.Chain circuit transmission time delay T, processing delay Δ T and chain circuit transmission time delay te sum are transferred to the propagation delay time of described receiving equipment by sink device again as described message from described transmitting apparatus; Chain circuit transmission time delay te is the chain-circuit time delay too between net equipment n+1 and sink device.
Wherein, processing delay and the first chain circuit transmission time delay are superimposed to storage field by the above-mentioned ethernet device that only describes, the embodiment of the present invention describe processing delay is loaded on storage field, and processing delay and the 3rd chain circuit transmission time delay are superimposed to store field do not make illustrated in greater detail herein.
Be illustrated with the storage field of SV message below:
Wherein, to be carried on the structure of Ethernet as follows for SV message:
Wherein, the ADU form of SV message is as follows:
Wherein, the data of 4 bytes in above-mentioned passage 1 can be for representing above-mentioned storage field.Namely in this example, memory word section is positioned at the reserved field of the load of message.
In addition, above-mentioned storage field can also be in the heading of SV message, shown in table specific as follows:
Wherein, above-mentioned reserved bit, Reserved1, Reserved2 are for representing above-mentioned storage field.Namely in this example, memory word section is positioned at the reserved field of the heading of message.
Be apparatus of the present invention embodiment below, the method that apparatus of the present invention embodiment realizes for performing the inventive method embodiment one to two, for convenience of explanation, illustrate only the part relevant to the embodiment of the present invention, concrete ins and outs do not disclose, and please refer to the embodiment of the present invention one and embodiment two.
Fig. 4 is the structural representation of a kind of message transmissions latency measurement system that the embodiment of the present invention provides, as shown in Figure 4, comprise: at least one transmission equipment 42 of transmitting apparatus 41 and receiving equipment 43, at least one transmission equipment 42 described is the transmission equipment 42 that the transmission route between described transmitting apparatus 41 and described receiving equipment 43 comprises, wherein:
Transmitting apparatus 41, for sending message to transmission route.
Above-mentioned transmission route can be specifically that transmitting apparatus 41 is when sending message to receiving equipment 43, message needs the transmission route of process, and this transmission route also can be by transmission equipment 42 unrestricted choice in transmission line, also can be specified by transmitting apparatus 41.Such as, above-mentioned message can comprise the address information of receiving equipment 43, and above-mentioned message is sent in above-mentioned transmission route by transmitting apparatus 41, and this transmission route just can carry out route according to this address information, so that this message is sent to receiving equipment 43.
Transmission equipment 42, for the processing delay of this transmission equipment 42 being loaded on preassigned storage field in described message, and the described message after loading is transmitted according to the transmission direction of described transmitting apparatus 41 to described receiving equipment 43, the time handled when described processing delay refers to that described transmission equipment 42 transmits described message.
Wherein, above-mentioned storage field can be the field of being specified by consensus standard, also can be user operation and the field that sets, field that can also be reserved in real time business message, can also the reserved field of bearing protocol.This storage field can be any field reserved in the message specified in consensus standard.Such as: the reserved field that the load of message comprises, also can be the reserved field that heading comprises.
Can be specifically be interpreted as that each transmission equipment 42 of transmission route is when receiving above-mentioned message, start timing, and this message is processed, process rear stopping timing, and the time this timing obtained is as the processing delay of this transmission equipment 42, and this processing delay is loaded on the storage field of message, then the message of loading processing time delay is sent to next one equipment of jumping.
Receiving equipment 43, for receiving the described message of described transmission route transmission, and according to the described processing delay that described storage field comprises, measures described message transfers to described receiving equipment 43 propagation delay time from described transmitting apparatus 41.
Such as: above-mentioned transmission route comprises: transmission equipment 42A, transmission equipment 42B and transmission equipment 42C, described transmitting apparatus 41 is that transmitting apparatus 41 to transmission equipment 42A to transmission equipment 42B to transmission equipment 42C is to receiving equipment 43 to the transmission direction of described receiving equipment 43.Transmitting apparatus 41 sends above-mentioned message to transmission equipment 42A, the processing delay of transmission equipment 42A is loaded on the storage field of message by transmission equipment 42A, again the message after loading is sent to transmission equipment 42B, the processing delay of transmission equipment 42B is loaded on the storage field of message by transmission equipment 42B, again by load after message to transmission equipment 42C, the processing delay of transmission equipment 42C is loaded on the storage field of message by transmission equipment 42C, then by the message after loading to receiving equipment 43.The message that such receiving equipment 43 receives just comprises the processing delay of transmission equipment 42A, transmission equipment 42B and transmission equipment 42C, and receiving equipment 43 measures according to these processing delay described message to transfer to described receiving equipment 43 propagation delay time from described transmitting apparatus 41 again.
The chain circuit transmission time delay sum that receiving equipment 43 specifically can also be used for processing delay and the described transmission route above-mentioned storage field comprised transfers to the propagation delay time of described receiving equipment 43 as described message from described transmitting apparatus 41.
Wherein, the chain circuit transmission time delay of transmission route described above can obtain in advance, also can be calculated by the linkage length of transmission route, can also be that the chain circuit transmission time delay of described transmission route is loaded in the storage field of above-mentioned message by above-mentioned transmission equipment 42.
Such as: receiving equipment 43 specifically may be used for the described processing delay that described storage field comprised and the chain circuit transmission time delay sum of the described transmission route obtained in advance transfer to described receiving equipment 43 propagation delay time as described message from described transmitting apparatus 41.Can be specifically first obtain all processing delay sums storing field and comprise, namely the summation of the processing delay of all transmission equipments 42 is got, specifically can to calculate in field process processing delay being loaded on store by transmission equipment 42, also can be receiving equipment 43 when receiving message, be calculated by receiving equipment 43.Again all processing delay sums that storage field comprises are added the chain circuit transmission time delay of the described transmission route obtained in advance, thus obtain described message transfers to described receiving equipment 43 propagation delay time from described transmitting apparatus 41.
Optionally, transmission equipment 42 specifically can also be used for the storage field processing delay of this transmission equipment 42 and the first chain circuit transmission time delay of this transmission equipment 42 being loaded on designated store time delay in advance in described message; First chain circuit transmission time delay of this transmission equipment 42 refers to transmit described message to the chain circuit transmission time delay between the upper hop equipment of this transmission equipment 42 and this transmission equipment 42.
Receiving equipment 43 specifically can also be used for the described processing delay described storage field comprised, described first chain circuit transmission time delay and the second chain circuit transmission time delay sum transfer to described receiving equipment 43 propagation delay time as described message from described transmitting apparatus 41; Chain circuit transmission time delay between last transmission equipment 42 that described second chain circuit transmission time delay is transmission direction described in described receiving equipment 43 and described transmission route.
Optionally, transmission equipment 42 specifically can also be used for the storage field processing delay of this transmission equipment 42 and the 3rd chain circuit transmission time delay of this transmission equipment 42 being loaded on designated store time delay in advance in described message; 3rd chain circuit transmission time delay of this transmission equipment 42 refers to transmit described message to the chain circuit transmission time delay between the next-hop device of this transmission equipment 42 and this transmission equipment 42;
Receiving equipment 43 specifically can also be used for the described processing delay described storage field comprised, described 3rd chain circuit transmission time delay and the 4th chain circuit transmission time delay sum transfer to described receiving equipment 43 propagation delay time as described message from described transmitting apparatus 41; Chain circuit transmission time delay between first transmission equipment 42 that described 4th chain circuit transmission time delay is transmission direction described in described transmitting apparatus 41 and described transmission route.
Optionally, transmission equipment 42 can also for being superimposed to the processing delay of the upper hop equipment of this transmission equipment 42 in preassigned storage field in described message by the processing delay of this transmission equipment 42; Described upper hop equipment refers to that the described message of transmission is to the equipment of this transmission equipment 42.
Wherein, above-mentioned superposition can be specifically be interpreted as to be superimposed on the processing delay of upper hop equipment by processing delay in the mode of increment.
The message that such receiving equipment 43 receives just can obtain the processing delay of each treatment facility, then measures according to these processing delay described message to transfer to described receiving equipment 43 propagation delay time from described transmitting apparatus 41.
As the optional execution mode of one, first chain circuit transmission time delay of this transmission equipment 42 for the processing delay of this transmission equipment 42 being superimposed to the processing delay of the upper hop equipment of this transmission equipment 42 in preassigned storage field in described message, and can also be superimposed on the first chain circuit transmission time delay of the upper hop equipment of this transmission equipment 42 in preassigned storage field in described message by transmission equipment 42.
Namely, when message transmissions is to receiving equipment 43, stores field and comprise two time delays, namely comprise total processing delay (the processing delay sum of each transmission equipment 42) and total first chain circuit transmission time delay (the first chain circuit transmission time delay sum of each transmission equipment 42).The message received just just can be comprised total processing delay, total first chain circuit transmission time delay and the second chain circuit transmission time delay sum transfer to described receiving equipment 43 propagation delay time as described message from described transmitting apparatus 41 by such receiving equipment 43; Chain circuit transmission time delay between last transmission equipment 42 that described second chain circuit transmission time delay is transmission direction described in described receiving equipment 43 and described transmission route.
As the optional execution mode of one, the processing delay of this transmission equipment 42 and the first chain circuit transmission time delay are added and obtain first-phase and add time delay by transmission equipment 42, and the first-phase of this transmission equipment 42 are added the first-phase that time delay is superimposed to the upper hop equipment of this transmission equipment 42 in preassigned storage field in described message and add in time delay.
Wherein, each transmission equipment 42 being received is processing delay and the first chain circuit transmission time delay are added to obtain first-phase and add time delay, then first-phase is added the first-phase that time delay is superimposed to the upper hop equipment of this transmission equipment 42 in preassigned storage field in described message and add in time delay.Namely only can comprise an overall delay in the message that receiving equipment 43 receives, this overall delay is the processing delay of each transmission equipment 42 and the summation of the first chain circuit transmission time delay.The message received just just can be comprised overall delay and the second chain circuit transmission time delay sum transfer to described receiving equipment 43 propagation delay time as described message from described transmitting apparatus 41 by such receiving equipment 43; Chain circuit transmission time delay between last transmission equipment 42 that described second chain circuit transmission time delay is transmission direction described in described receiving equipment 43 and described transmission route.
As the optional execution mode of one, 3rd chain circuit transmission time delay of this transmission equipment 42 for the processing delay of this transmission equipment 42 being superimposed to the processing delay of the next-hop device of this transmission equipment 42 in preassigned storage field in described message, and can also be superimposed on the 3rd chain circuit transmission time delay of the upper hop equipment of this transmission equipment 42 in preassigned storage field in described message by transmission equipment 42.
Namely, when message transmissions is to receiving equipment 43, stores field and comprise two time delays, namely comprise total processing delay (the processing delay sum of each transmission equipment 42) and total 3rd chain circuit transmission time delay (the first chain circuit transmission time delay sum of each transmission equipment 42).The message received just just can be comprised total processing delay, total 3rd chain circuit transmission time delay and the 4th propagation delay time sum transfer to described receiving equipment 43 propagation delay time as described message from described transmitting apparatus 41 by such receiving equipment 43.Chain circuit transmission time delay between first transmission equipment 42 that described 4th chain circuit transmission time delay is transmission direction described in described transmitting apparatus 41 and described transmission route.
As the optional execution mode of one, transmission equipment 42 can also be used for the processing delay of this transmission equipment 42 and the 3rd chain circuit transmission time delay to be added and obtains second-phase and add time delay, and the second-phase of this transmission equipment 42 is added the second-phase that time delay is superimposed to the upper hop equipment of this transmission equipment 42 in preassigned storage field in described message and add in time delay.
Wherein, each transmission equipment 42 being received is processing delay and the 3rd chain circuit transmission time delay are added to obtain second-phase and add time delay, then second-phase is added the second-phase that time delay is superimposed to the next-hop device of this transmission equipment 42 in preassigned storage field in described message and add in time delay.Namely only can comprise an overall delay in the message that receiving equipment 43 receives, this overall delay is the processing delay of each transmission equipment 42 and the summation of the 3rd chain circuit transmission time delay.The message received just just can be comprised overall delay and the 4th propagation delay time sum transfer to described receiving equipment 43 propagation delay time as described message from described transmitting apparatus 41 by such receiving equipment 43.Chain circuit transmission time delay between first transmission equipment 42 that described 4th chain circuit transmission time delay is transmission direction described in described transmitting apparatus 41 and described transmission route.
Wherein, above-mentioned storage field specifically can to the storage field with reference to embodiment of the method description above.
Wherein, above-mentioned chain-circuit time delay is the time delay that the link that comprises of transmission route produces, and chain-circuit time delay can be specifically be direct ratio with the length of link, namely knows that the length of link just can obtain the chain-circuit time delay of this link.
In technique scheme, owing to being that processing delay is loaded in message by transmission equipment, receiving equipment measures according to the processing delay of packet storage described message to transfer to described receiving equipment propagation delay time from described transmitting apparatus again, so just do not need to increase extra equipment, thus the cost of communication system can be reduced.
One of ordinary skill in the art will appreciate that all or part of flow process realized in above-described embodiment method, that the hardware that can carry out instruction relevant by computer program has come, described program can be stored in a computer read/write memory medium, this program, when performing, can comprise the flow process of the embodiment as above-mentioned each side method.Wherein, described storage medium can be magnetic disc, CD, read-only store-memory body (Read-Only Memory, ROM) or random access memory (Random Access Memory is called for short RAM) etc.
Above disclosedly be only present pre-ferred embodiments, certainly can not limit the interest field of the present invention with this, therefore according to the equivalent variations that the claims in the present invention are done, still belong to the scope that the present invention is contained.
Claims (10)
1. a message transmissions time-delay measuring method, is characterized in that, comprising:
Transmitting apparatus sends message to transmission route, and described transmission route is the transmission route between described transmitting apparatus and described receiving equipment;
The processing delay of this transmission equipment is loaded on preassigned storage field in described message by each transmission equipment of described transmission route, and the described message after loading is transmitted according to the transmission direction of described transmitting apparatus to described receiving equipment, the time handled when described processing delay refers to that described transmission equipment transmits described message;
Described receiving equipment receives the described message of described transmission route transmission, and according to the described processing delay that described storage field comprises, measures described message transfers to described receiving equipment propagation delay time from described transmitting apparatus.
2. the method for claim 1, is characterized in that, the processing delay of this transmission equipment is loaded on preassigned storage field in described message by each transmission equipment of described transmission route, comprising:
The processing delay of this transmission equipment is superimposed on the processing delay of the upper hop equipment of this transmission equipment in preassigned storage field in described message by each transmission equipment of described transmission route; Described upper hop equipment refers to that the described message of transmission is to the equipment of this transmission equipment.
3. method as claimed in claim 1 or 2, is characterized in that, the described processing delay that described receiving equipment comprises according to described storage field, measures described message transfers to described receiving equipment propagation delay time from described transmitting apparatus, comprising:
The described processing delay that described storage field comprises by described receiving equipment transfers to the propagation delay time of described receiving equipment with the chain circuit transmission time delay sum of the described transmission route obtained in advance as described message from described transmitting apparatus; Or
The described processing delay that described storage field comprises by described receiving equipment transfers to the propagation delay time of described receiving equipment as described message from described transmitting apparatus.
4. the method for claim 1, is characterized in that, the processing delay of this transmission equipment is loaded on preassigned storage field in described message by each transmission equipment of described transmission route, comprising:
The processing delay of this transmission equipment and the first chain circuit transmission time delay of this transmission equipment are loaded on the storage field of designated store time delay in advance in described message by each transmission equipment of described transmission route; First chain circuit transmission time delay of this transmission equipment refers to transmit described message to the chain circuit transmission time delay between the upper hop equipment of this transmission equipment and this transmission equipment;
The described processing delay that described receiving equipment comprises according to described storage field, measure described message transfers to described receiving equipment propagation delay time from described transmitting apparatus, comprising:
The described processing delay that described storage field comprises by described receiving equipment, described first chain circuit transmission time delay and the second chain circuit transmission time delay sum transfer to the propagation delay time of described receiving equipment as described message from described transmitting apparatus; Chain circuit transmission time delay between last transmission equipment that described second chain circuit transmission time delay is transmission direction described in described receiving equipment and described transmission route.
5. the method for claim 1, is characterized in that, the processing delay of this transmission equipment is loaded on preassigned storage field in described message by each transmission equipment of described transmission route, comprising:
The processing delay of this transmission equipment and the 3rd chain circuit transmission time delay of this transmission equipment are loaded on the storage field of designated store time delay in advance in described message by each transmission equipment of described transmission route; 3rd chain circuit transmission time delay of this transmission equipment refers to transmit described message to the chain circuit transmission time delay between the next-hop device of this transmission equipment and this transmission equipment;
The described processing delay that described receiving equipment comprises according to described storage field, measure described message transfers to described receiving equipment propagation delay time from described transmitting apparatus, comprising:
The described processing delay that described storage field comprises by described receiving equipment, described 3rd chain circuit transmission time delay and the 4th chain circuit transmission time delay sum transfer to the propagation delay time of described receiving equipment as described message from described transmitting apparatus; Chain circuit transmission time delay between first transmission equipment that described 4th chain circuit transmission time delay is transmission direction described in described transmitting apparatus and described transmission route.
6. a message transmissions latency measurement system, it is characterized in that, comprise: at least one transmission equipment of transmitting apparatus and receiving equipment, at least one transmission equipment described is the transmission equipment that the transmission route between described transmitting apparatus and described receiving equipment comprises, wherein:
Described transmitting apparatus, for sending message to transmission route;
Described transmission equipment, for the processing delay of this transmission equipment being loaded on preassigned storage field in described message, and the described message after loading is transmitted according to the transmission direction of described transmitting apparatus to described receiving equipment, the time handled when described processing delay refers to that described transmission equipment transmits described message;
Described receiving equipment, for receiving the described message of described transmission route transmission, and according to the described processing delay that described storage field comprises, measures described message transfers to described receiving equipment propagation delay time from described transmitting apparatus.
7. system as claimed in claim 6, it is characterized in that, described transmission equipment is also for being superimposed to the processing delay of the upper hop equipment of this transmission equipment in preassigned storage field in described message by the processing delay of this transmission equipment; Described upper hop equipment refers to that the described message of transmission is to the equipment of this transmission equipment.
8. system as claimed in claims 6 or 7, it is characterized in that, the concrete propagation delay time also transferring to described receiving equipment for the chain circuit transmission time delay sum of the described processing delay described storage field comprised and the described transmission route obtained in advance as described message from described transmitting apparatus of described receiving equipment; Or
The concrete propagation delay time also transferring to described receiving equipment for the described processing delay that described storage field comprised as described message from described transmitting apparatus of described receiving equipment.
9. system as claimed in claim 6, is characterized in that, described transmission equipment is concrete also for the first chain circuit transmission time delay of the processing delay of this transmission equipment and this transmission equipment being loaded on the storage field of designated store time delay in advance in described message; First chain circuit transmission time delay of this transmission equipment refers to transmit described message to the chain circuit transmission time delay between the upper hop equipment of this transmission equipment and this transmission equipment;
Described receiving equipment specifically also transfers to the propagation delay time of described receiving equipment as described message from described transmitting apparatus for the described processing delay described storage field comprised, described first chain circuit transmission time delay and the second chain circuit transmission time delay sum; Chain circuit transmission time delay between last transmission equipment that described second chain circuit transmission time delay is transmission direction described in described receiving equipment and described transmission route.
10. system as claimed in claim 6, is characterized in that, described transmission equipment is concrete also for the 3rd chain circuit transmission time delay of the processing delay of this transmission equipment and this transmission equipment being loaded on the storage field of designated store time delay in advance in described message; 3rd chain circuit transmission time delay of this transmission equipment refers to transmit described message to the chain circuit transmission time delay between the next-hop device of this transmission equipment and this transmission equipment;
Described receiving equipment specifically also transfers to the propagation delay time of described receiving equipment as described message from described transmitting apparatus for the described processing delay described storage field comprised, described 3rd chain circuit transmission time delay and the 4th chain circuit transmission time delay sum; Chain circuit transmission time delay between first transmission equipment that described 4th chain circuit transmission time delay is transmission direction described in described transmitting apparatus and described transmission route.
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| CN201310327128.4A CN104301168A (en) | 2013-07-31 | 2013-07-31 | Message transmission delay measurement method and system |
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| CN201310327128.4A CN104301168A (en) | 2013-07-31 | 2013-07-31 | Message transmission delay measurement method and system |
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