CN103051383A - Method and equipment for processing information - Google Patents
Method and equipment for processing information Download PDFInfo
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- CN103051383A CN103051383A CN2012105045692A CN201210504569A CN103051383A CN 103051383 A CN103051383 A CN 103051383A CN 2012105045692 A CN2012105045692 A CN 2012105045692A CN 201210504569 A CN201210504569 A CN 201210504569A CN 103051383 A CN103051383 A CN 103051383A
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Abstract
The embodiment of the invention provides a method and equipment for processing information. The method comprises the following steps of determining a first transmission delay T1; determining a second transmission delay T2; determining a first time difference delta T1 according to the first transmission delay T1 and the second transmission delay T2, wherein the delta T1 is obtained by subtracting T1 from T2; after the delta T1 is determined, carrying out the delay sending processing on the third information; or, after the delta T1 is determined, carrying out the advanced sending processing on the fourth information. Through the technical scheme, the difference value of the information transmission time between the first network equipment and the second network equipment is measured, and the delay sending processing or the advanced sending processing is carried out on the information in the subsequent information transmission process, so the probability of instable communication between the two network equipment is reduced when the first network equipment and the second network equipment are sequentially used for realizing communication.
Description
Technical field
The present invention relates to the communications field, and more specifically, relate to a kind of method and apparatus of process information.
Background technology
In the prior art, have following scene: two network equipments need successively by middle two network equipments when passing through.As shown in Figure 1, when the 3rd network and the 4th network equipment communicate, need successively by first network equipment and second network equipment, perhaps successively by second network equipment and first network equipment.The inventor finds the 3rd network equipment and the 4th network equipment when communicating, and has the unsettled situation of communication.
For example, in the system that remote wireless unit (RRU, Remote Radio Unit) and Base Band Unit (BBU, Baseband Unit) form, RRU is connected with BBU and is connected by optical fiber.In addition, also introduce other equipment in this system, such as two optical transfer networks (OTN, Optical Transport Netwrok).RRU and BBU communicate by two OTN can be for increasing the distance between RRU and the BBU, the application scenarios of expansion RRU and BBU.
But, after introducing two OTN between RRU and the BBU, common public radio interface (CPRI, the Common Public Radio Interface) communication of Business Stream between RRU and BBU is not only relevant with RRU, BBU and connection medium (such as optical fiber), and is also relevant with the OTN that introduces.The inventor finds that behind two OTN of introducing, unsettled situation appears in communicating by letter of RRU and BBU between RRU and the BBU.
Summary of the invention
Embodiments of the invention provide a kind of method and apparatus of process information, and two network equipments that can reduce to communicate by first network equipment and second network equipment successively communicate and unsettled probability occurs.
First aspect, a kind of method of process information is provided, comprise: determine the first transmission delay T1, described the first transmission delay T1 is used to indicate the first information from entering first network equipment to leaving the used time of second network equipment, and the described first information is that the 3rd network equipment sends to the 4th network equipment; Determine the second transmission delay T2, described the second transmission delay T2 is used to indicate the second information from entering described second network equipment to leaving the described used time of first network equipment, described the second information is that described the 4th network equipment sends to described the 3rd network equipment, and T1 is less than T2; Determine poor Δ T1 of the very first time according to described the first transmission delay T1 and described the second transmission delay T2, Δ T1 equals T2 and deducts T1; Behind definite Δ T1, the 3rd information is carried out delayed delivery to be processed, thereby so that the second time difference Δ T2 is less than poor Δ T1 of the described very first time, Δ T2 is the absolute value of the difference of the 3rd transmission delay T3 and the 4th transmission delay T4, described the 3rd transmission delay T3 is used to indicate described the 3rd information from entering described first network equipment to leaving the described used time of second network equipment, described the 4th transmission delay T4 is used to indicate the 4th information from entering described second network equipment to leaving the described used time of first network equipment, described the 3rd information is that described the 3rd network equipment sends to described the 4th network equipment, and described the 4th information is that described the 4th network equipment sends to described the 3rd network equipment; Perhaps behind definite Δ T1, the 4th information is shifted to an earlier date transmission processing, thereby so that the second time difference Δ T2 is less than poor Δ T1 of the described very first time, Δ T2 is the absolute value of the difference of the 3rd transmission delay T3 and the 4th transmission delay T4, described the 3rd transmission delay T3 is used to indicate the 3rd information from entering described first network equipment to leaving the described used time of second network equipment, described the 4th transmission delay T4 is used to indicate described the 4th information from entering described second network equipment to leaving the described used time of first network equipment, described the 3rd information is that described the 3rd network equipment sends to described the 4th network equipment, and described the 4th information is that described the 4th network equipment sends to described the 3rd network equipment.
In conjunction with first aspect, in a kind of implementation of first aspect, described the 3rd information is carried out the delayed delivery processing to be comprised: before described first network equipment receives described the 3rd information, described first network equipment increases and is used for storing that described the 3rd network equipment sends, described first network equipment receives, and the extremely memory space of the information of described second network equipment to be sent, described memory space adopts the tupe of first-in first-out to the information that receives; Perhaps before described second network equipment receives described the 3rd information, described second network equipment increases and is used for storing that described the 3rd network equipment sends, via described first network device transmission, described second network equipment receives, and the extremely memory space of the information of described the 4th network equipment to be sent, described memory space adopts the tupe of first-in first-out to the information that receives.
Above-mentioned implementation in conjunction with first aspect and first aspect, in the another kind of implementation of first aspect, the 4th information is shifted to an earlier date transmission processing to be comprised: before described first network equipment sends described the 4th information, described first network equipment reduces and is used for storing that described the 4th network equipment sends, via described second network device transmission, described first network equipment receives, and the extremely memory space of the information of described the 3rd network equipment to be sent, described memory space adopts the tupe of first-in first-out to the information that receives; Perhaps before described second network equipment sends described the 4th information, described second network equipment reduces and is used for storing that described the 4th network equipment sends, described second network equipment receives, and the extremely memory space of the information of described first network equipment to be sent, described memory space adopts the tupe of first-in first-out to the information that receives.
In conjunction with the above-mentioned implementation of first aspect and first aspect, in the another kind of implementation of first aspect, determine that the first transmission delay T1 comprises: determine that the described first information enters the time point t1 of first network equipment; Send the first message to described second network equipment, described the first message comprises the described first information and described time point t1, so that described second network equipment is determined described the first transmission delay T1, T1=t2-t1, t2 are the time point t2 that the described first information leaves described second network equipment.
Above-mentioned implementation in conjunction with first aspect and first aspect, in the another kind of implementation of first aspect, determine that the second transmission delay T2 comprises: receive the second message that described second network equipment sends, described the second message comprises the second information and time point t3, and t3 is the time point that described the second information enters described the second equipment; Determine the 4th time point t4, t4 is the time point that described the second information is left described first network equipment; Determine described the second transmission delay T2, T2=t4-t3.
Second aspect, a kind of equipment of process information is provided, comprise: determining unit, be used for determining the first transmission delay T1, described the first transmission delay T1 is used to indicate the first information from entering first network equipment to leaving the used time of second network equipment, and the described first information is that the 3rd network equipment sends to the 4th network equipment; Determine the second transmission delay T2, described the second transmission delay T2 is used to indicate the second information from entering described second network equipment to leaving the described used time of first network equipment, described the second information is that described the 4th network equipment sends to described the 3rd network equipment, and T1 is less than T2; Determine poor Δ T1 of the very first time according to described the first transmission delay T1 and described the second transmission delay T2, Δ T1 equals T2 and deducts T1; And processing unit, be used for after described determining unit is determined Δ T1, the 3rd information is carried out delayed delivery to be processed, thereby so that the second time difference Δ T2 is less than poor Δ T1 of the described very first time, Δ T2 is the absolute value of the difference of the 3rd transmission delay T3 and the 4th transmission delay T4, described the 3rd transmission delay T3 is used to indicate described the 3rd information from entering described first network equipment to leaving the described used time of second network equipment, described the 4th transmission delay T4 is used to indicate the 4th information from entering described second network equipment to leaving the described used time of first network equipment, described the 3rd information is that described the 3rd network equipment sends to described the 4th network equipment, and described the 4th information is that described the 4th network equipment sends to described the 3rd network equipment; Perhaps, after described determining unit is determined Δ T1, the 4th information is shifted to an earlier date transmission processing, thereby so that the second time difference Δ T2 is less than poor Δ T1 of the described very first time, Δ T2 is the absolute value of the difference of the 3rd transmission delay T3 and the 4th transmission delay T4, described the 3rd transmission delay T3 is used to indicate the 3rd information from entering described first network equipment to leaving the described used time of second network equipment, described the 4th transmission delay T4 is used to indicate described the 4th information from entering described second network equipment to leaving the described used time of first network equipment, described the 3rd information is that described the 3rd network equipment sends to described the 4th network equipment, and described the 4th information is that described the 4th network equipment sends to described the 3rd network equipment.
In conjunction with second aspect, in a kind of implementation of second aspect, described processing unit specifically is used for before described first network equipment receives described the 3rd information, increase to be used for storing that described the 3rd network equipment sends, described first network equipment receives, and the memory space of the information to described second network equipment to be sent, described memory space adopts the tupe of first-in first-out to the information that receives, and described equipment is described first network equipment; Perhaps, before described second network equipment receives described the 3rd information, increase to be used for storing that described the 3rd network equipment sends, via described first network device transmission, described second network equipment receives, and the memory space of the information to described the 4th network equipment to be sent, described memory space adopts the tupe of first-in first-out to the information that receives, and described equipment is described second network equipment.
Above-mentioned implementation in conjunction with second aspect and second aspect, in the another kind of implementation of second aspect, described processing unit specifically is used for before described first network equipment sends described the 4th information, reduce to be used for storing that described the 4th network equipment sends, via described second network device transmission, described first network equipment receives, and the extremely memory space of the information of described the 3rd network equipment to be sent, described memory space adopts the tupe of first-in first-out to the information that receives, and described equipment is described first network equipment; Perhaps, before described second network equipment sends described the 4th information, reduce to be used for storing that described the 4th network equipment sends, described second network equipment receives, and the extremely memory space of the information of described first network equipment to be sent, described memory space adopts the tupe of first-in first-out to the information that receives, and described equipment is described second network equipment.
Above-mentioned implementation in conjunction with second aspect and second aspect, in the another kind of implementation of second aspect, described equipment also comprises receiving element, be used for receiving the first message that described first network equipment sends, described the first message comprises that the described first information and the described first information enter the time point t1 of first network equipment, and described equipment is described second network equipment; Described determining unit is used for specifically determining described the first transmission delay T1 according to the described time point t1 of described first message of described receiving element reception that T1=t2-t1, t2 are the time point that the described first information leaves described second network equipment.
Above-mentioned implementation in conjunction with second aspect and second aspect, in the another kind of implementation of second aspect, described equipment also comprises receiving element, be used for receiving the second message that described second network equipment sends, described the second message comprises that described the second information and described the second information enter the time point t3 of second network equipment, and described equipment is described first network equipment; Described determining unit is used for specifically determining described the second transmission delay T2 according to the described time point t3 of described second message of described receiving element reception that T2=t4-t3, t4 are the time point t2 that described the second information is left described first network equipment.
In the technique scheme, by described the second information of the transmission time of metrical information between first network equipment and second network equipment from entering described second network equipment to leaving used time of described first network equipment and the described first information from entering first network equipment to leaving the second network equipment difference of used time, and according to described difference described the 3rd information is postponed that in the follow-up transmission course information is carried out delayed delivery and process or described the 4th information is shifted to an earlier date transmission processing, can be used in and reduce in the subsequent communications, information is from entering first network equipment to the time of leaving second network equipment and information from entering the difference of second network equipment to the time of leaving first network equipment.Therefore, technique scheme can be used in two network equipments that reduce to communicate by first network equipment and second network equipment successively and communicates the unsettled probability of appearance.
Description of drawings
In order to be illustrated more clearly in the technical scheme of the embodiment of the invention, the below will do to introduce simply to the accompanying drawing of required use in the embodiment of the invention, apparently, below described accompanying drawing only be some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the scene schematic diagram of one embodiment of the invention.
Fig. 2 is the method flow diagram of the process information of one embodiment of the invention.
Fig. 3 is the flow chart of method of the process information of one embodiment of the invention.
Fig. 4 is the flow chart of method of the process information of one embodiment of the invention.
Fig. 5 is the flow chart of method of the process information of one embodiment of the invention.
Fig. 6 is the schematic diagram of method of the process information of one embodiment of the invention.
Fig. 7 is the block diagram of equipment of the process information of the embodiment of the invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment is a part of embodiment of the present invention, rather than whole embodiment.Based on the embodiment among the present invention, the every other embodiment that those of ordinary skills obtain under the prerequisite of not making creative work should belong to the scope of protection of the invention.
Fig. 1 is the scene schematic diagram of one embodiment of the invention.In the scene of Fig. 1, the 3rd network equipment and the 4th network equipment communicate, and need successively by first network equipment and second network equipment, perhaps successively by second network equipment and first network equipment.For example, when the 3rd network equipment will send information to the 4th network equipment, need first information to be sent to first network equipment, by first network equipment information is sent to second network equipment again, then second network equipment sends to the 4th network equipment with information; Similarly, when the 4th network equipment sends information to the 3rd network equipment, need first information to be sent to second network equipment, by second network equipment information is sent to first network equipment again, then first network equipment is sent to the 3rd network equipment with information.
The inventor finds, in some scene, if information is excessive to the time phase difference that leaves first network equipment from entering second network equipment to the time of leaving second network equipment and information from entering first network equipment, then the unsettled phenomenon of communicating by letter can occur.
The method flow diagram of the process information that Fig. 2 provides for one embodiment of the invention.The method can be carried out by first network equipment shown in Figure 1 or second network equipment.
201, determine the first transmission delay T1.Described the first transmission delay T1 is used to indicate the first information from entering first network equipment to leaving the used time of second network equipment.The described first information is that the 3rd network equipment sends to the 4th network equipment.
For instance, 201 executive agent can be the CPU of described first network equipment or the CPU of described second network equipment.
202, determine the second transmission delay T2.Described the second transmission delay T2 is used to indicate the second information from entering described second network equipment to leaving the described used time of first network equipment.Described the second information is that described the 4th network equipment sends to described the 3rd network equipment, and T1 is less than T2.
For instance, 202 executive agent can be the CPU of described first network equipment or the CPU of described second network equipment.
203, determine poor Δ T1 of the very first time according to described the first transmission delay T1 and described the second transmission delay T2.Δ T1 equals T2 and deducts T1.
For instance, 203 executive agent can be the CPU of described first network equipment or the CPU of described second network equipment.
204, behind definite Δ T1, the 3rd information is carried out delayed delivery process, perhaps the 4th information is shifted to an earlier date transmission processing.
Described the 3rd information is carried out delayed delivery process, thereby so that the second time difference Δ T2 differs from Δ T1 less than the described very first time.Δ T2 is the absolute value of the difference of the 3rd transmission delay T3 and the 4th transmission delay T4.Described the 3rd transmission delay T3 is used to indicate described the 3rd information from entering described first network equipment to leaving the described used time of second network equipment.Described the 4th transmission delay T4 is used to indicate the 4th information from entering described second network equipment to leaving the described used time of first network equipment.Described the 3rd information is that described the 3rd network equipment sends to described the 4th network equipment.Described the 4th information is that described the 4th network equipment sends to described the 3rd network equipment.
Described the 4th information is shifted to an earlier date transmission processing, thereby so that the second time difference Δ T2 differs from Δ T1 less than the described very first time.Δ T2 is the absolute value of the difference of the 3rd transmission delay T3 and the 4th transmission delay T4.Described the 3rd transmission delay T3 is used to indicate the 3rd information from entering described first network equipment to leaving the described used time of second network equipment.Described the 4th transmission delay T4 is used to indicate described the 4th information from entering described second network equipment to leaving the described used time of first network equipment.Described the 3rd information is that described the 3rd network equipment sends to described the 4th network equipment.Described the 4th information is that described the 4th network equipment sends to described the 3rd network equipment.
For instance, 204 executive agent can be the CPU of described first network equipment or the CPU of described second network equipment.
In the technique scheme, by measuring described the second information from entering described second network equipment to leaving used time of described first network equipment and the described first information from entering first network equipment to leaving the second network equipment difference of used time, and according to described difference described the 3rd information is carried out that delayed delivery is processed or described the 4th information is shifted to an earlier date transmission processing, can be used in and reduce in the subsequent communications, information is from entering first network equipment to the time of leaving second network equipment and information from entering the difference of second network equipment to the time of leaving first network equipment.Therefore, technique scheme can be used in two network equipments that reduce to communicate by first network equipment and second network equipment successively and communicates the unsettled probability of appearance.
Need to prove that in 204, the concrete mode that the embodiment of the invention is carried out the delayed delivery processing to the 3rd information is not construed as limiting.
Alternatively, as an embodiment, described the 3rd information is carried out delayed delivery to be processed and can comprise: described the 3rd information is carried out the delayed delivery processing comprise: before described first network equipment receives described the 3rd information, described first network equipment increases and is used for storing that described the 3rd network equipment sends, described first network equipment receives, and the extremely memory space of the information of described second network equipment to be sent, described memory space adopts the tupe of first-in first-out to the information that receives.
For instance, above-mentioned memory space can be carried in first-in first-out (First In First Out, the FIFO) memory.Described FIFO memory has the address pointer of reading and write address pointer, can increase above-mentioned memory space by increasing the described difference of reading the indicated address of the indicated address of address pointer and described write address pointer.For example, the first transmission delay T1=490ns, the second transmission delay T2=500ns, the work clock cycle of the described FIFO memory of described first network equipment is 5ns.At this moment, by adjusting the described indicated address of address pointer or the indicated address of described write address pointer of reading of described FIFO, make the described difference of reading the indicated address of the indicated address of address pointer and described write address pointer increase 2, thereby so that the time that described the 3rd information stops in the described FIFO of described first network equipment with compare and increase by 2 * 5ns=10ns described the 3rd information not being carried out described the 3rd information stops in the situation that delayed delivery that present embodiment provides processes time in described FIFO, thereby so that the second transmission delay increases 10ns.At this moment, T3=T4=500ns, Δ T2 is reduced to 0.
Need to prove that the embodiment of the invention is not construed as limiting the type of memory, above-mentioned memory space can be carried in other normal memory, and utilize software to realize the function of above-mentioned first-in first-out; Perhaps adopt register group or other memory devices to reach the change information effect of the time of staying in the network equipment.
Alternatively, as another embodiment, described the 3rd information is carried out the delayed delivery processing also can be comprised: before described second network equipment receives described the 3rd information, described second network equipment increases and is used for storing that described the 3rd network equipment sends, via described first network device transmission, described second network equipment receives, and the extremely memory space of the information of described the 4th network equipment to be sent, and described memory space adopts the tupe of first-in first-out to the information that receives.
Need to prove that in 204, the embodiment of the invention is not construed as limiting the concrete mode that the 4th information shifts to an earlier date transmission processing.
Alternatively, as an embodiment, described the 4th information is shifted to an earlier date transmission processing comprises:
Before described first network equipment sends described the 4th information, described first network equipment reduces and is used for storing that described the 4th network equipment sends, via described second network device transmission, described first network equipment receives, and the extremely memory space of the information of described the 3rd network equipment to be sent, described memory space adopts the tupe of first-in first-out to the information that receives.
For instance, above-mentioned memory space can be carried in the FIFO memory, the FIFO memory has the address pointer of reading and write address pointer, reduces above-mentioned memory space by the difference that reduces to read the indicated address of the indicated address of address pointer and described write address pointer.For example, the first transmission delay T1=490ns, the second transmission delay T2=500ns, the work clock cycle of the described FIFO memory of described first network equipment is 5ns.At this moment, by adjusting the described difference of reading the address of address and described write address pointer of described FIFO, make the poor increase and decrease of read/write address few 2, thereby so that time decreased 2 * 5ns=10ns that the 3rd information stops in first network equipment buffer memory, thereby so that the second transmission delay reduces 10ns.At this moment, T3=T4=490ns, Δ T2 is reduced to 0.
Alternatively, as another embodiment, the 4th information is shifted to an earlier date transmission processing also can be comprised: before described second network equipment sends described the 4th information, described second network equipment reduces and is used for storing that described the 4th network equipment sends, described second network equipment receives, and the extremely memory space of the information of described first network equipment to be sent, described memory space adopts the tupe of first-in first-out to the information that receives.
Need to prove that in 201, the embodiment of the invention is not construed as limiting the mode of determining the first transmission delay T1.
Alternatively, as an embodiment, determine that the first transmission delay T1 can comprise: determine that the described first information enters the time point t1 of first network equipment; Send the first message to described second network equipment, described the first message comprises the described first information and described time point t1, so that described second network equipment is determined described the first transmission delay T1, T1=t2-t1, t2 are the time point t2 that the described first information leaves described second network equipment.For example, first network equipment will be inserted in the first information between the form of time point t1 with the time stamp frame, is packaged into the first message and sends to second network equipment; After second network equipment receives the first message, the first message is carried out decapsulation, then obtain time point t1 and the first information, the first information is carried in the new message to the 4th network equipment again and sends, above-mentioned time point t2 namely new message leaves time of second network equipment.
Alternatively, as another embodiment, determine that the first transmission delay T1 also can comprise: first network equipment is not to second network equipment passing time point t1, but after second network equipment obtains above-mentioned time point t2, after receiving the message that is used to indicate time point t2 of second network equipment transmission, first network equipment is determined T1=t2-t1.
Need to prove that in 202, the embodiment of the invention is not construed as limiting the mode of determining the second transmission delay T2.
Alternatively, as an embodiment, determine that the second transmission delay T2 can comprise: receive the second message that described second network equipment sends, described the second message comprises the second information and time point t3, and t3 is the time point that described the second information enters described the second equipment; Determine the 4th time point t4, t4 is the time point that described the second information is left described first network equipment; Determine described the second transmission delay T2, T2=t4-t3.For example, second network equipment will be inserted in the second information between the form of time point t3 with the time stamp frame, is packaged into the second message and sends to first network equipment; After first network equipment receives the second message, the second message is carried out decapsulation, then obtain time point t3 and the second information, the second information is carried in the new message to the 3rd network equipment again and sends, above-mentioned time point t4 namely new message leaves time of first network equipment.
Alternatively, as another embodiment, determine that the second transmission delay T2 also can comprise: first network equipment directly receives the message that is used to indicate t3 that second network equipment sends, and determines T2=t4-t3 after first network equipment obtains t4 again.
Need to prove that the embodiment of the invention is not construed as limiting 101 and 102 order.For example can determine first T1, determine again T2; Perhaps determine first T2, at definite T1; Perhaps determine simultaneously T1 and T2.
Alternatively, as another embodiment, before 201, also can comprise: with the time synchronized of first network equipment and second network equipment.Need to prove, the embodiment of the invention is not construed as limiting the above-mentioned method of synchronization with first network equipment and second network equipment, for example can adopt the clock synchronous unit that first network equipment and second network equipment are carried out synchronously, can also adopt GPS, dipper system or precision time protocol (Precision Time Protocol, PTP) mode to carry out time synchronized.
Below in conjunction with object lesson, the embodiment of the invention is described in further detail.The example that it should be noted that Fig. 3 to Fig. 5 only is in order to help those skilled in the art to understand the embodiment of the invention, and leaves no choice but the embodiment of the invention is limited to illustrated concrete numerical value or concrete scene.Those skilled in the art obviously can carry out modification or the variation of various equivalences according to the example of given Fig. 3 to Fig. 5, and such modification or variation also fall in the scope of the embodiment of the invention.
Need to prove that Fig. 3 to Fig. 6 is the schematic diagram of determining the method for Δ T1.Fig. 3 extremely method shown in Figure 6 can be applied in the method shown in Figure 2.In the example of Fig. 3 to Fig. 6, t1 represents the time point that the first information enters first network equipment, t2 represents the time point that the first information leaves second network equipment, and t3 represents the time point that the second information enters the second equipment, and t4 represents the time point that the second information is left second network equipment.Wherein, the first information passes to second network equipment from first network equipment, and the second information passes to first network equipment from second network equipment.In addition, the first transmission delay T1 is that the first information is from entering first network equipment to leaving the used time of second network equipment, the second transmission delay T2 be the second information from entering second network equipment to leaving the used time of first network equipment, Δ T1 represents the difference of T1 and T2.For avoiding repetition, repeat no more in the following example.
Fig. 3 is the flow chart of method of the process information of one embodiment of the invention.Among the embodiment of Fig. 3, after first network equipment is determined t1, do not transmit t1 to second network equipment, but t1 is stored, when receiving the t2 that second network equipment determines, calculate T1=t2-t1 by first network equipment.
301, first network equipment is determined t1.
302, second network equipment is determined t2.
303, second network equipment is determined t3.
304, second network equipment sends t2 and t3 to first network equipment.
305, first network equipment is determined t4, T1=t2-t1, T2=t4-t3 and Δ T1.
In the embodiment of the invention, by the metrical information difference in the transmission time between first network equipment and second network equipment, and in the follow-up transmission course, information postponed or transmission processing in advance, two network equipments that reduce to communicate by first network equipment and second network equipment successively communicate and unsettled probability occurs.
Fig. 4 is the flow chart of method of the process information of one embodiment of the invention.Among the embodiment of Fig. 4, t3 is early than t1.Need to prove that the embodiment of the invention is not construed as limiting the sequencing of the first information and the second information.
401, second network equipment is determined t3.
402, second network equipment sends t3 to first network equipment.
403, first network equipment is determined t4, and definite T2=t4-t3.
404, first network equipment is determined t1.
405, first network equipment sends t1 to second network equipment.
406, second network equipment is determined t2, and definite T1=t2-t1.
407, second network equipment sends T1 to first network equipment.
408, first network equipment is determined Δ T1.
In the embodiment of the invention, by the metrical information difference in the transmission time between first network equipment and second network equipment, and in the follow-up transmission course, information postponed or transmission processing in advance, two network equipments that reduce to communicate by first network equipment and second network equipment successively communicate and unsettled probability occurs.
Fig. 5 is the flow chart of method of the process information of one embodiment of the invention.Among the embodiment of Fig. 5, the second information is early than the first information, and second network equipment is only determined t2 and two time points of t3.About establishing a capital really by first network equipment, T1 and T2 and Δ T finish.
501, second network equipment is determined t3.
502, second network equipment sends t3 to first network equipment.
503, first network equipment is determined t4, and calculates T2=t4-t3.
504, first network equipment is determined t1.
505, second network equipment is determined t2.
506, second network equipment sends t2 to first network equipment.
507, first network equipment is determined T1 and Δ T1.
In the embodiment of the invention, by the metrical information difference in the transmission time between first network equipment and second network equipment, and in the follow-up transmission course, information postponed or transmission processing in advance, two network equipments that reduce to communicate by first network equipment and second network equipment successively communicate and unsettled probability occurs.
Fig. 6 is the schematic diagram of method of the process information of one embodiment of the invention.OTN1 and OTN2 are the equipment that adds between RRU and the BBU, and what OTN1 and OTN2 transmitted is the Business Stream of CPRI business.
For ease of describing, the direction of definition from OTN1 to OTN2 is L1, i.e. the flow direction of the first Business Stream; OTN2 is L2 to the direction of OTN1, i.e. the flow direction of the second Business Stream.
At first, by the clock synchronous unit two OTN are carried out time synchronized.
Be that the entrance of L1 obtains t1 at the entrance of OTN1.Then, take certain service bandwidth t1 is delivered to OTN2 with Business Stream from OTN1.Be that the outlet of L1 obtains t2 in the outlet of OTN2, from Business Stream, parse simultaneously t1.Can obtain the CPRI business along the time T 1 of L1 direction from OTN1 to OTN2 with t2-t1.Be that the entrance of L2 obtains time point t3 at the entrance of OTN2, will take certain service bandwidth along T1 and the t3 that the L1 direction calculating obtains, along with the CPRI Business Stream is delivered to OTN1 from the second equipment together.
Then, be that the outlet of L2 parses t3 and T1 from Business Stream in the outlet of OTN1, obtain simultaneously t4.T2=t4-t3 can obtain the CPRI business along the time of L2 direction from OTN1 to OTN2, can obtain the transmitted in both directions delay inequality Δ T of OTN1 and OTN2 with T2-T1 again.In like manner, also can t1 and T2 be taken service bandwidth at the entrance of OTN1, pass to OTN2 from OTN1, parse t1 and T2 in the outlet of OTN2.Obtain simultaneously t2, and calculate Δ T1.
Illustrate, suppose t1=100ns, with 100ns with the form of frame with the CPRI service delivery to OTN2, parsing t1 in the outlet of OTN2 is 100ns.Simultaneously, determine that in the outlet of OTN2 t2 is 120ns, can determine T1=120ns-100ns, i.e. 20ns so.On the L2 direction, Business Stream enters the time t3=125ns of OTN2, and t3 and T1 along with the CPRI Business Stream is delivered to OTN1, are parsed t3 and T1 in the outlet of the first equipment.Simultaneously obtaining t4 in the outlet of OTN1 is 160ns, then obtains T2=35ns.Then can calculate Δ T1=35ns-20ns=15ns.
Above-mentioned temporal information is time stamp information, take the transmission of service bandwidth such as t1, t2, t3, t4, T1, T2, to realize by the form that has a time stamp frame of one's own, namely in the gap of CPRI business, interleave equably some temporal informations, packed together at Way in and CPRI business, in Way out and CPRI business together by decapsulation.Each time stamp frame contains a frame head and some frag infos.
After obtaining Δ T1, in the outlet of L1 or in the exit of L2, according to the Δ T1 that obtains, the time length of utilizing business datum to stop in buffer memory is adjusted time-delay, and then reaches the purpose of compensation Δ T.
The read/write address of buffer memory poor (write address subtract read the address) is waterline, has reacted the time of staying of data in buffer memory.During professional stablizing, waterline value is stable, and so time of stopping in buffer memory of business datum, namely delay value also is stable.Adjust the buffer memory waterline and be by adjust buffer memory read the address or write address is realized, reach the effect that increases or reduce time-delay.For example the work clock cycle of buffer memory is 5ns, and the existing address of reading is adjusted into 3 by 1, and waterline value has lacked 3-1=2, and namely delay value has reduced 2 * 5ns=10ns; In like manner will read 2 of address minimizings is that waterline has been increased by 2 addresses, and corresponding delay value has increased by 2 * 5ns=10ns.The final two-way delay inequality of capable of regulating is in the ns level.
In the embodiment of the invention, by the metrical information difference in the transmission time between OTN1 and OTN2, and in the follow-up transmission course, information postponed or transmission processing in advance, two OTN that reduce to communicate by OTN1 and OTN2 successively communicate and unsettled probability occurs.
Fig. 7 is the block diagram of equipment of the process information of the embodiment of the invention.Described equipment can be used for carrying out method shown in Figure 2.The equipment of Fig. 7 comprises determining unit 701 and processing unit 702.
Determining unit 701, be used for determining the first transmission delay T1, described the first transmission delay T1 is used to indicate the first information from entering first network equipment to leaving the used time of second network equipment, and the described first information is that the 3rd network equipment sends to the 4th network equipment; Determine the second transmission delay T2, described the second transmission delay T2 is used to indicate the second information from entering described second network equipment to leaving the described used time of first network equipment, described the second information is that described the 4th network equipment sends to described the 3rd network equipment, and T1 is less than T2.Determine poor Δ T1 of the very first time according to described the first transmission delay T1 and described the second transmission delay T2, Δ T1 equals T2 and deducts T1.
Processing unit 702, be used for behind definite Δ T1, the 3rd information is carried out delayed delivery to be processed, thereby so that the second time difference Δ T2 is less than poor Δ T1 of the described very first time, Δ T2 is the absolute value of the difference of the 3rd transmission delay T3 and the 4th transmission delay T4, described the 3rd transmission delay T3 is used to indicate described the 3rd information from entering described first network equipment to leaving the described used time of second network equipment, described the 4th transmission delay T4 is used to indicate the 4th information from entering described second network equipment to leaving the described used time of first network equipment, described the 3rd information is that described the 3rd network equipment sends to described the 4th network equipment, and described the 4th information is that described the 4th network equipment sends to described the 3rd network equipment; Perhaps, behind definite Δ T1, the 4th information is shifted to an earlier date transmission processing, thereby so that the second time difference Δ T2 is less than poor Δ T1 of the described very first time, Δ T2 is the absolute value of the difference of the 3rd transmission delay T3 and the 4th transmission delay T4, described the 3rd transmission delay T3 is used to indicate the 3rd information from entering described first network equipment to leaving the described used time of second network equipment, described the 4th transmission delay T4 is used to indicate described the 4th information from entering described second network equipment to leaving the described used time of first network equipment, described the 3rd information is that described the 3rd network equipment sends to described the 4th network equipment, and described the 4th information is that described the 4th network equipment sends to described the 3rd network equipment.
In the embodiment of the invention, by the metrical information difference in the transmission time between first network equipment and second network equipment, and in the follow-up transmission course, information postponed or transmission processing in advance, two network equipments that reduce to communicate by first network equipment and second network equipment successively communicate and unsettled probability occurs.
Alternatively, as an embodiment, processing unit 702 is concrete for before first network equipment receives the 3rd information, the increase of first network equipment is used for the transmission of storage the 3rd network equipment, first network equipment receives, and the memory space of the information to second network equipment to be sent, memory space adopt the tupe of first-in first-out to the information that receives; Perhaps, before second network equipment receives the 3rd information, the increase of second network equipment is used for the transmission of storage the 3rd network equipment, via the first network device transmission, second network equipment receives, and the memory space of the information to the 4th network equipment to be sent, memory space adopt the tupe of first-in first-out to the information that receives.
Alternatively, as another embodiment, processing unit 702 is concrete for before first network equipment sends the 4th information, the minimizing of first network equipment is used for the transmission of storage the 4th network equipment, via the second network device transmission, first network equipment receives, and the memory space of the information to the 3rd network equipment to be sent, and memory space adopts the tupe of first-in first-out to the information that receives; Perhaps, before second network equipment sends the 4th information, the minimizing of second network equipment is used for the transmission of storage the 4th network equipment, second network equipment receives, and the memory space of the information to first network equipment to be sent, memory space adopt the tupe of first-in first-out to the information that receives.
Alternatively, as another embodiment, determining unit 701 is concrete for determining that the first information enters the time point t1 of first network equipment; Send the first message to second network equipment, the first message comprises the first information and time point t1, so that the second equipment is determined the first transmission delay T1, T1=t2-t1, t2 are the time point t2 that the first information leaves second network equipment.
Alternatively, as another embodiment, determining unit 701 concrete the second messages that are used for receiving the transmission of second network equipment, the second message comprises the second information and time point t3, t3 is the time point that the second information enters the second equipment; Determine the 4th time point t4, t4 is the time point that the second information is left first network equipment; Determine the second transmission delay T2, T2=t4-t3.
The embodiment of the invention provides a kind of network equipment.The described network equipment can be used for execution graph 2 described methods.The described network equipment comprises processor and memory.Described processor and the coupling of described memory.Described memory stores computer software.Described processor is by accessing the following operation of described software performing:
Determine the first transmission delay T1, described the first transmission delay T1 is used to indicate the first information from entering first network equipment to leaving the used time of second network equipment, and the described first information is that the 3rd network equipment sends to the 4th network equipment;
Determine the second transmission delay T2, described the second transmission delay T2 is used to indicate the second information from entering described second network equipment to leaving the described used time of first network equipment, described the second information is that described the 4th network equipment sends to described the 3rd network equipment, and T1 is less than T2;
Determine poor Δ T1 of the very first time according to described the first transmission delay T1 and described the second transmission delay T2, Δ T1 equals T2 and deducts T1;
Behind definite Δ T1, the 3rd information is carried out delayed delivery to be processed, thereby so that the second time difference Δ T2 is less than poor Δ T1 of the described very first time, Δ T2 is the absolute value of the difference of the 3rd transmission delay T3 and the 4th transmission delay T4, described the 3rd transmission delay T3 is used to indicate described the 3rd information from entering described first network equipment to leaving the described used time of second network equipment, described the 4th transmission delay T4 is used to indicate the 4th information from entering described second network equipment to leaving the described used time of first network equipment, described the 3rd information is that described the 3rd network equipment sends to described the 4th network equipment, and described the 4th information is that described the 4th network equipment sends to described the 3rd network equipment; Perhaps
Behind definite Δ T1, the 4th information is shifted to an earlier date transmission processing, thereby so that the second time difference Δ T2 is less than poor Δ T1 of the described very first time, Δ T2 is the absolute value of the difference of the 3rd transmission delay T3 and the 4th transmission delay T4, described the 3rd transmission delay T3 is used to indicate the 3rd information from entering described first network equipment to leaving the described used time of second network equipment, described the 4th transmission delay T4 is used to indicate described the 4th information from entering described second network equipment to leaving the described used time of first network equipment, described the 3rd information is that described the 3rd network equipment sends to described the 4th network equipment, and described the 4th information is that described the 4th network equipment sends to described the 3rd network equipment.
Alternatively, described the 3rd information being carried out delayed delivery processes and can comprise:
Before described first network equipment receives described the 3rd information, described first network equipment increases and is used for storing that described the 3rd network equipment sends, described first network equipment receives, and the extremely memory space of the information of described second network equipment to be sent, described memory space adopts the tupe of first-in first-out to the information that receives; Perhaps
Before described second network equipment receives described the 3rd information, described second network equipment increases and is used for storing that described the 3rd network equipment sends, via described first network device transmission, described second network equipment receives, and the extremely memory space of the information of described the 4th network equipment to be sent, described memory space adopts the tupe of first-in first-out to the information that receives.
Alternatively, described the 4th information being shifted to an earlier date transmission processing can comprise:
Before described first network equipment sends described the 4th information, described first network equipment reduces and is used for storing that described the 4th network equipment sends, via described second network device transmission, described first network equipment receives, and the extremely memory space of the information of described the 3rd network equipment to be sent, described memory space adopts the tupe of first-in first-out to the information that receives; Perhaps
Before described second network equipment sends described the 4th information, described second network equipment reduces and is used for storing that described the 4th network equipment sends, described second network equipment receives, and the extremely memory space of the information of described first network equipment to be sent, described memory space adopts the tupe of first-in first-out to the information that receives.
Alternatively, determine that described the first transmission delay T1 can comprise:
Determine that the described first information enters the time point t1 of first network equipment;
Send the first message to described second network equipment, described the first message comprises the described first information and described time point t1, so that described second network equipment is determined described the first transmission delay T1, T1=t2-t1, t2 are the time point t2 that the described first information leaves described second network equipment.
Alternatively, determine that described the second transmission delay T2 can comprise:
Receive the second message that described second network equipment sends, described the second message comprises the second information and time point t3, and t3 is the time point that described the second information enters described the second equipment;
Determine the 4th time point t4, t4 is the time point that described the second information is left described first network equipment;
Determine described the second transmission delay T2, T2=t4-t3.
Those of ordinary skills can recognize, unit and the algorithm steps of each example of describing in conjunction with embodiment disclosed herein can be realized with the combination of electronic hardware or computer software and electronic hardware.These functions are carried out with hardware or software mode actually, depend on application-specific and the design constraint of technical scheme.The professional and technical personnel can specifically should be used for realizing described function with distinct methods to each, but this realization should not thought and exceeds scope of the present invention.
The those skilled in the art can be well understood to, and is the convenience described and succinct, and the specific works process of the system of foregoing description, device and unit can with reference to the corresponding process among the preceding method embodiment, not repeat them here.
In several embodiment that the application provides, should be understood that disclosed system, apparatus and method can realize by another way.For example, device embodiment described above only is schematic, for example, the division of described 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 in conjunction with or can be integrated into another system, or some features can ignore, or do not carry out.Another point, the shown or coupling each other discussed or direct-coupling or communication connection can be by some interfaces, indirect coupling or the communication connection of device or unit can be electrically, machinery or other form.
Described 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, namely can be positioned at a place, perhaps also can be distributed on a plurality of network element.Can select according to the actual needs wherein some or all of unit to realize the purpose of present embodiment scheme.
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 of unit exists, and also can be integrated in the unit two or more unit.
If described function realizes with the form of SFU software functional unit and during as independently production marketing or use, can be stored in the computer read/write memory medium.Based on such understanding, the part that technical scheme of the present invention contributes to prior art in essence in other words or the part of this technical scheme can embody with the form of software product, this computer software product is stored in the storage medium, comprise that some instructions are with so that a computer equipment (can be personal computer, server, the perhaps network equipment etc.) carry out all or part of step of the described method of each embodiment of the present invention.And aforesaid storage medium comprises: the various media that can be program code stored such as USB flash disk, portable hard drive, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disc or CD.
The above; be the specific embodiment of the present invention only, but protection scope of the present invention is not limited to this, anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; can expect easily changing or replacing, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion by described protection range with claim.
Claims (10)
1. the method for a process information is characterized in that, comprising:
Determine the first transmission delay T1, described the first transmission delay T1 is used to indicate the first information from entering first network equipment to leaving the used time of second network equipment, and the described first information is that the 3rd network equipment sends to the 4th network equipment;
Determine the second transmission delay T2, described the second transmission delay T2 is used to indicate the second information from entering described second network equipment to leaving the described used time of first network equipment, described the second information is that described the 4th network equipment sends to described the 3rd network equipment, and T1 is less than T2;
Determine poor Δ T1 of the very first time according to described the first transmission delay T1 and described the second transmission delay T2, Δ T1 equals T2 and deducts T1;
Behind definite Δ T1, the 3rd information is carried out delayed delivery to be processed, thereby so that the second time difference Δ T2 is less than poor Δ T1 of the described very first time, Δ T2 is the absolute value of the difference of the 3rd transmission delay T3 and the 4th transmission delay T4, described the 3rd transmission delay T3 is used to indicate described the 3rd information from entering described first network equipment to leaving the described used time of second network equipment, described the 4th transmission delay T4 is used to indicate the 4th information from entering described second network equipment to leaving the described used time of first network equipment, described the 3rd information is that described the 3rd network equipment sends to described the 4th network equipment, and described the 4th information is that described the 4th network equipment sends to described the 3rd network equipment; Perhaps
Behind definite Δ T1, the 4th information is shifted to an earlier date transmission processing, thereby so that the second time difference Δ T2 is less than poor Δ T1 of the described very first time, Δ T2 is the absolute value of the difference of the 3rd transmission delay T3 and the 4th transmission delay T4, described the 3rd transmission delay T3 is used to indicate the 3rd information from entering described first network equipment to leaving the described used time of second network equipment, described the 4th transmission delay T4 is used to indicate described the 4th information from entering described second network equipment to leaving the described used time of first network equipment, described the 3rd information is that described the 3rd network equipment sends to described the 4th network equipment, and described the 4th information is that described the 4th network equipment sends to described the 3rd network equipment.
2. the method for claim 1 is characterized in that, described the 3rd information is carried out the delayed delivery processing comprise:
Before described first network equipment receives described the 3rd information, described first network equipment increases and is used for storing that described the 3rd network equipment sends, described first network equipment receives, and the extremely memory space of the information of described second network equipment to be sent, described memory space adopts the tupe of first-in first-out to the information that receives; Perhaps
Before described second network equipment receives described the 3rd information, described second network equipment increases and is used for storing that described the 3rd network equipment sends, via described first network device transmission, described second network equipment receives, and the extremely memory space of the information of described the 4th network equipment to be sent, described memory space adopts the tupe of first-in first-out to the information that receives.
3. the method for claim 1 is characterized in that, described the 4th information is shifted to an earlier date transmission processing comprise:
Before described first network equipment sends described the 4th information, described first network equipment reduces and is used for storing that described the 4th network equipment sends, via described second network device transmission, described first network equipment receives, and the extremely memory space of the information of described the 3rd network equipment to be sent, described memory space adopts the tupe of first-in first-out to the information that receives; Perhaps
Before described second network equipment sends described the 4th information, described second network equipment reduces and is used for storing that described the 4th network equipment sends, described second network equipment receives, and the extremely memory space of the information of described first network equipment to be sent, described memory space adopts the tupe of first-in first-out to the information that receives.
4. such as each described method among the claim 1-3, it is characterized in that, determine that the first transmission delay T1 comprises:
Determine that the described first information enters the time point t1 of first network equipment;
Send the first message to described second network equipment, described the first message comprises the described first information and described time point t1, so that described second network equipment is determined described the first transmission delay T1, T1=t2-t1, t2 are the time point t2 that the described first information leaves described second network equipment.
5. such as each described method among the claim 1-4, it is characterized in that, determine that the second transmission delay T2 comprises:
Receive the second message that described second network equipment sends, described the second message comprises the second information and time point t3, and t3 is the time point that described the second information enters described the second equipment;
Determine the 4th time point t4, t4 is the time point that described the second information is left described first network equipment;
Determine described the second transmission delay T2, T2=t4-t3.
6. the equipment of a process information is characterized in that, comprising:
Determining unit, be used for determining the first transmission delay T1, described the first transmission delay T1 is used to indicate the first information from entering first network equipment to leaving the used time of second network equipment, and the described first information is that the 3rd network equipment sends to the 4th network equipment; Determine the second transmission delay T2, described the second transmission delay T2 is used to indicate the second information from entering described second network equipment to leaving the described used time of first network equipment, described the second information is that described the 4th network equipment sends to described the 3rd network equipment, and T1 is less than T2; Determine poor Δ T1 of the very first time according to described the first transmission delay T1 and described the second transmission delay T2, Δ T1 equals T2 and deducts T1; With
Processing unit, be used for after described determining unit is determined Δ T1, the 3rd information is carried out delayed delivery to be processed, thereby so that the second time difference Δ T2 is less than poor Δ T1 of the described very first time, Δ T2 is the absolute value of the difference of the 3rd transmission delay T3 and the 4th transmission delay T4, described the 3rd transmission delay T3 is used to indicate described the 3rd information from entering described first network equipment to leaving the described used time of second network equipment, described the 4th transmission delay T4 is used to indicate the 4th information from entering described second network equipment to leaving the described used time of first network equipment, described the 3rd information is that described the 3rd network equipment sends to described the 4th network equipment, and described the 4th information is that described the 4th network equipment sends to described the 3rd network equipment; Perhaps, after described determining unit is determined Δ T1, the 4th information is shifted to an earlier date transmission processing, thereby so that the second time difference Δ T2 is less than poor Δ T1 of the described very first time, Δ T2 is the absolute value of the difference of the 3rd transmission delay T3 and the 4th transmission delay T4, described the 3rd transmission delay T3 is used to indicate the 3rd information from entering described first network equipment to leaving the described used time of second network equipment, described the 4th transmission delay T4 is used to indicate described the 4th information from entering described second network equipment to leaving the described used time of first network equipment, described the 3rd information is that described the 3rd network equipment sends to described the 4th network equipment, and described the 4th information is that described the 4th network equipment sends to described the 3rd network equipment.
7. equipment as claimed in claim 6, it is characterized in that, described processing unit specifically is used for before described first network equipment receives described the 3rd information, increase to be used for storing that described the 3rd network equipment sends, described first network equipment receives, and the memory space of the information to described second network equipment to be sent, described memory space adopts the tupe of first-in first-out to the information that receives, and described equipment is described first network equipment; Perhaps, before described second network equipment receives described the 3rd information, increase to be used for storing that described the 3rd network equipment sends, via described first network device transmission, described second network equipment receives, and the memory space of the information to described the 4th network equipment to be sent, described memory space adopts the tupe of first-in first-out to the information that receives, and described equipment is described second network equipment.
8. equipment as claimed in claim 6, it is characterized in that, described processing unit specifically is used for before described first network equipment sends described the 4th information, reduce to be used for storing that described the 4th network equipment sends, via described second network device transmission, described first network equipment receives, and the memory space of the information to described the 3rd network equipment to be sent, described memory space adopts the tupe of first-in first-out to the information that receives, and described equipment is described first network equipment; Perhaps, before described second network equipment sends described the 4th information, reduce to be used for storing that described the 4th network equipment sends, described second network equipment receives, and the extremely memory space of the information of described first network equipment to be sent, described memory space adopts the tupe of first-in first-out to the information that receives, and described equipment is described second network equipment.
9. such as each described equipment among the claim 6-8, it is characterized in that,
Described equipment also comprises receiving element, is used for receiving the first message that described first network equipment sends, and described the first message comprises that the described first information and the described first information enter the time point t1 of first network equipment, and described equipment is described second network equipment;
Described determining unit is used for specifically determining described the first transmission delay T1 according to the described time point t1 of described first message of described receiving element reception that T1=t2-t1, t2 are the time point that the described first information leaves described second network equipment.
10. such as each described equipment among the claim 6-8, it is characterized in that,
Described equipment also comprises receiving element, is used for receiving the second message that described second network equipment sends, and described the second message comprises that described the second information and described the second information enter the time point t3 of second network equipment, and described equipment is described first network equipment;
Described determining unit is used for specifically determining described the second transmission delay T2 according to the described time point t3 of described second message of described receiving element reception that T2=t4-t3, t4 are the time point t2 that described the second information is left described first network equipment.
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Application publication date: 20130417 |