CN102572706B - For detecting the method for propagation delay time, equipment and system in wireless multicast system - Google Patents
For detecting the method for propagation delay time, equipment and system in wireless multicast system Download PDFInfo
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Abstract
The present invention relates to a kind of in wireless multicast system for detecting the method for propagation delay time, equipment and system.Wherein, first periodically send by multicast service gateway whole base station in multicast network territory the first acknowledges requests comprising very first time stamp, after each base station receives, calculate the first respective propagation delay time based on very first time stamp, and the first response comprising described first propagation delay time information is fed back to multicast service gateway; Then, multicast service gateway is selected to grow the first propagation delay time most by each the first propagation delay time information comprised in each response, and based on the longest described first propagation delay time for Multicast-Service Center provides described multicast data transmission Delay.Advantage of the present invention comprises: can detect the propagation delay time from Multicast-Service Center to base station in real time.
Description
Technical field
The present invention relates to wireless multicast communication field, particularly relating in wireless multicast system for detecting the method for propagation delay time, equipment and system.
Background technology
Multicast/broadcast Single Frequency Network (MBSFN) in LTE system defines a kind of pattern, for transmitting the same waveform from each community simultaneously.In this mode, each transmission information all will comprise a time stab in synchronous protocol data cell (SYNC PDU), and this time stab shows the correct time of multimedia broadcast multi-broadcasting business (MBMS) data that base station interface sends aloft.And when setting-up time stamp, broadcast multicast service center (BM-SC) needs to consider following factor: time of advent of data, from broadcast multicast service center (BM-SC) to the length and other extra latency etc. of the maximum transmitted time delay of eNB farthest, synchronizing sequence that time stab is corresponding.
Due to up to the present, 3GPP also does not specify any mode to support the propagation delay time for single frequency network multicast/broadcast (MBSFN) to detect, so existing broadcast multicast service center (BM-SC) often uses a parameter that can join to adjust maximum transmitted time delay.But once topological structure changes, this parameter just needs to be reset, therefore very dumb in actual application.
Summary of the invention
The object of this invention is to provide a kind of in wireless multicast system for detecting the method for propagation delay time, equipment and system.
According to an aspect of the present invention, provide a kind of in the multicast service gateway of wireless multicast system the method for auxiliary detection multicast data transmission time delay, wherein, the method comprises the following steps:
A whole base station in multicast network territory periodically sends the first acknowledges requests, wherein comprises very first time stamp;
Wherein, the method also comprises;
-receive all first responses of described whole base station feedback;
-select to grow the first propagation delay time most by each the first propagation delay time information comprised in each response;
Wherein, the method also comprises:
X based on the longest described first propagation delay time for Multicast-Service Center provides described multicast data transmission Delay.
According to another aspect of the present invention, additionally provide a kind of in the base station of wireless multicast system the method for auxiliary detection multicast data transmission time delay, wherein, the method comprises:
A receives the first acknowledges requests periodically sent by multicast service gateway, wherein comprises very first time stamp;
B calculates the first propagation delay time based on described very first time stamp;
C feeds back the first response to described multicast service gateway, comprising described first propagation delay time information.
According to a further aspect of the invention, additionally provide a kind of in the Multicast-Service Center of wireless multicast system for detecting the method for multicast data transmission time delay, wherein, the method comprises:
-periodically send the second acknowledges requests to multicast service gateway, wherein comprise the second time stab;
Wherein, the method also comprises:
-receive described multicast service gateway feedback the second response;
-obtain described multicast data transmission Delay by described second response.
According to a further aspect of the invention, additionally provide a kind of in wireless multicast system the multicast service gateway for auxiliary detection multicast data transmission time delay, wherein, comprising:
First dispensing device, periodically sends the first acknowledges requests for base station whole in multicast network territory, wherein comprises very first time stamp;
First receiving device, for receiving all first responses of described whole base station feedback;
Choice device, for selecting to grow the first propagation delay time most by each the first propagation delay time information comprised in each response;
Generator, for based on the longest described first propagation delay time for Multicast-Service Center provides described multicast data transmission Delay.
According to a further aspect of the invention, additionally provide a kind of in wireless multicast system the base station for auxiliary detection multicast data transmission time delay, wherein, comprising:
3rd receiving system, for receiving the first acknowledges requests periodically sent by multicast service gateway, wherein comprises very first time stamp;
Second calculation element, for calculating the first propagation delay time based on described very first time stamp;
3rd dispensing device, for feeding back the first response to described multicast service gateway, comprising described first propagation delay time information.
According to a further aspect of the invention, additionally provide a kind of in wireless multicast system for detecting the Multicast-Service Center of multicast data transmission time delay, wherein, comprising:
4th dispensing device, for periodically sending the second acknowledges requests to multicast service gateway, wherein comprises the second time stab;
4th receiving system, for receiving the second response of described multicast service gateway feedback;
Acquisition device, for obtaining described multicast data transmission Delay by described second response.
Compared with prior art, the present invention has the following advantages: the propagation delay time between can detecting in real time from Multicast-Service Center to base station.
Accompanying drawing explanation
By reading the detailed description done non-limiting example done with reference to the following drawings, other features, objects and advantages of the present invention will become more obvious:
Fig. 1 is the wireless multicast system topological diagram of one aspect of the invention;
Fig. 2 be one aspect of the invention in the multicast service gateway of wireless multicast system for detecting the method flow diagram of multicast data transmission time delay;
Fig. 3 be another aspect of the present invention in the multicast service gateway of wireless multicast system for detecting the method flow diagram of multicast data transmission time delay;
Fig. 4 be another aspect of the present invention in the multicast service gateway of wireless multicast system for detecting the method flow diagram of multicast data transmission time delay;
Fig. 5 be another aspect of the present invention in the multicast service gateway of wireless multicast system for detecting the method flow diagram of multicast data transmission time delay;
Fig. 6 be another aspect of the present invention in the multicast service gateway of wireless multicast system for detecting the method flow diagram of multicast data transmission time delay;
Fig. 7 be one aspect of the invention in the multicast service gateway of wireless multicast system for detecting the system schematic of multicast data transmission time delay;
Fig. 8 be another aspect of the present invention in the multicast service gateway of wireless multicast system for detecting the system schematic of multicast data transmission time delay;
Fig. 9 be another aspect of the present invention in the multicast service gateway of wireless multicast system for detecting the system schematic of multicast data transmission time delay;
In accompanying drawing, same or analogous Reference numeral represents same or analogous parts.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail.
Fig. 1 shows the wireless multicast system topological diagram of one aspect of the invention.Described multi-medium multi-packet broadcasting system comprises: base station 11, base station 12 ... base station 1K, multicast service gateway 2 and Multicast-Service Center 3.Wherein, each base station includes but not limited to: e-NodeB; Described multicast service gateway 2 can be the electronic equipment that any one can communicate with each base station and Multicast-Service Center, include but not limited to: MBMS GW, described Multicast-Service Center includes but not limited to: BM-SC, and described multicast system includes but not limited to: based on the MBSFN network system etc. of 3G or LTE.
Fig. 2 shows one aspect of the invention in the multicast service gateway of wireless multicast system for detecting the flow chart of the method for multicast data transmission time delay.In order to simplicity of illustration, only be described for the communication interaction between base station 11 and multicast service gateway 2 in figure, but it should be appreciated by those skilled in the art, in fact, base station 12 ... base station 1K also carrying out communication interaction with multicast service gateway 2, describes in detail at this no longer one by one.
Particularly, in step sl, multicast service gateway 2 whole base station in multicast network territory periodically sends the first acknowledges requests, wherein comprises very first time stamp.Such as, multimedia broadcast multi-broadcasting business gateway (MBMS GW) periodically sends the first acknowledges requests to all e-NodeBs in single frequency network multicast/broadcast (MBSFN) territory.And in GPRS Tunnel Protocol (GTP) the header extension territory of the first acknowledges requests message, insert a time stab.Time stab unit is 10 milliseconds.
Then, in step s 2, base station 11 receives the first acknowledges requests periodically sent by multicast service gateway, wherein comprises very first time stamp.Such as, base station 11 receives the first acknowledges requests, and obtains very first time stamp in the GTP header extension territory of the first acknowledges requests message.
Then, in step s3, base station 11 calculates the first propagation delay time based on described very first time stamp.Such as, base station 11 is based on described very first time stamp and the time of reception receiving synchronizing sequence, computing information transfers to the first propagation delay time required for self by multicast service gateway 2, such as, be the difference D of described very first time stamp and the time of reception receiving synchronizing sequence
gW & NB1.
Then, in step s 4 which, the first response is fed back to described multicast service gateway 2 in base station 11, comprising described first propagation delay time information.Such as, the first propagation delay time D is filled in base station 11 in GPRS Tunnel Protocol (GTP) the header extension territory of the first response message
gW & NB1.
Then, in step s 5, multicast service gateway 2 receives all first responses of described whole base station feedback.Such as, multicast service gateway 2 receives base station 11, base station 12 ... base station 1K the first response separately, wherein comprise the first propagation delay time information in each first response, such as, the first propagation delay time information comprised in the first response of base station 11 is D
gW & NB1, base station 12 the first response in the first propagation delay time information of comprising be D
gW & NB2... the first propagation delay time information comprised in first response of base station 1K is D
gW & NBK.Wherein, it is identical with the computational methods of base station 11 to the method for the first propagation delay time required for self by multicast service gateway 2 that base station 12 ... base station 1K calculates signal separately, that is, calculate according to the time stab comprised in the first acknowledges requests received separately, be not described in detail in this.
Then, in step s 6, multicast service gateway 2 is selected to grow the first propagation delay time most by each the first propagation delay time information comprised in each response.Such as, multicast service gateway 2 is by each the first propagation delay time information: the D comprised in each response
gW & NB1, D
gW & NB2... D
gW & NBKin, select the longest first propagation delay time, such as, be: D
gW & NB2.
Finally, in the step s 7, multicast service gateway 2 based on the longest described first propagation delay time for Multicast-Service Center 3 provides described multicast data transmission Delay.Such as, multicast service gateway 2 is based on the longest described first propagation delay time: D
gW & NB2, for Multicast-Service Center 3 provides described multicast data transmission Delay.
Fig. 3 shows another aspect of the present invention in the multicast service gateway of wireless multicast system for detecting the flow chart of the method for multicast data transmission time delay.In order to simplicity of illustration, still be described for the communication interaction between base station 11 and multicast service gateway 2 in figure, but it should be appreciated by those skilled in the art, in fact, base station 12 ... base station 1K also carrying out communication interaction with multicast service gateway 2, describes in detail at this no longer one by one.
Particularly, step S1 and S2 is described in detail in the embodiment shown in Figure 2, comprises by reference at this, no longer repeats.
Then, in step S3 ', base station 11 according to pre-defined rule, and based on the time of reception of described very first time stamp and synchronizing sequence, calculates the first propagation delay time.Wherein, described pre-defined rule includes but not limited to: 1) when detecting that the interval between the time that the time that synchronizing sequence receives and synchronizing sequence make a reservation for need to send is less than the first predetermined threshold, increase by the first propagation delay time with predetermined step-length; 2) when detecting that the interval between the time that the time that synchronizing sequence receives and synchronizing sequence make a reservation for need to send is greater than the second predetermined threshold, the first propagation delay time etc. is reduced with predetermined step-length.
Such as, base station 11 calculates the interval detected between the time that the time that synchronizing sequence receives and synchronizing sequence make a reservation for need to send, if described interval is too short, such as, be less than the first predetermined threshold, when namely the processing time of base station 11 is inadequate, then base station 11 can increase certain step value to obtain the first propagation delay time on the basis at described interval; And if described interval is long, such as, be greater than the second predetermined threshold, the data volume causing base station 11 needs to store is too much, then certain step value can be reduced to obtain the first propagation delay time in base station 11 on the basis at described interval, but the first propagation delay time obtained after reducing can not be less than the difference of the time of reception of very first time stamp and synchronizing sequence.
Then, step S4 to S7 is described in detail in the embodiment shown in Figure 2, comprises by reference at this, no longer repeats.
Fig. 4 shows another aspect of the present invention in the multicast service gateway of wireless multicast system for detecting the flow chart of the method for multicast data transmission time delay.In order to simplicity of illustration, still be described for the communication interaction between base station 11 and multicast service gateway 2 in figure, but it should be appreciated by those skilled in the art, in fact, base station 12 ... base station 1K also carrying out communication interaction with multicast service gateway 2, describes in detail at this no longer one by one.
Particularly, step S1 to S6 is described in detail in the embodiment shown in Figure 2, comprises by reference at this, no longer repeats.
In step S1 ', Multicast-Service Center 3 periodically sends the second acknowledges requests to multicast service gateway, wherein comprises the second time stab.Such as, broadcast multicast service center (BM-SC) is periodically sent in second acknowledges requests of extension field with the second time stab to multimedia broadcast multi-broadcasting business gateway (MBMS GW).
Then, in step S5 ', multicast service gateway 2 receives the second acknowledges requests from Multicast-Service Center, wherein comprises the second time stab.
Then, in step S6 ', multicast service gateway 2 calculates the second propagation delay time based on described second time stab.Such as, multicast service gateway 2 calculates the second propagation delay time based on the time of reception of described second time stab and synchronizing sequence, such as, be: D
bM-SC & GW.
Then, in step S7 ', multicast service gateway 2 feeds back the second response to described Multicast-Service Center 3, the longest first propagation delay time and the second propagation delay time described in wherein comprising, as described multicast data transmission Delay.Such as, multicast service gateway 2 calculates overall delay=the longest first propagation delay time+the second propagation delay time, such as, and overall delay=D
bM-SC & GW+ D
gW & NB12; Subsequently, the second response comprising described overall delay is fed back to described Multicast-Service Center 3 by multicast service gateway 2.
Then, in step s 8, described Multicast-Service Center 3 receives the second response of described multicast service gateway 2 feedback.
Finally, in step s 9, described Multicast-Service Center 3 obtains described multicast data transmission Delay by described second response.Such as, described Multicast-Service Center 3 directly extracts overall delay information by described second response.
It should be noted that, if multicast service gateway 2 feeds back to based on the longest first propagation delay time the feedback information that described Multicast-Service Center 3 only comprises the longest first propagation delay time, the second response that Multicast-Service Center 3 only comprises the second propagation delay time is fed back to again based on the second propagation delay time, the feedback information that then described Multicast-Service Center 3 can comprise the longest first propagation delay time by this obtains the longest first propagation delay time and the second propagation delay time respectively with the second response comprising the second propagation delay time, calculates overall delay subsequently.
In addition, those skilled in the art should understand that, the order of above steps is not that the above is limited, in fact, step S1 ' can carry out with step S1, S2, S2 or S4 simultaneously, also can carry out etc. after each step, then have, step S5 and S5 ' can merge into a step, and step S6 and S6 ' also can merge into step etc.
Fig. 5 shows another aspect of the present invention in the multicast service gateway of wireless multicast system for detecting the flow chart of the method for multicast data transmission time delay.In order to simplicity of illustration, still be described for the communication interaction between base station 11 and multicast service gateway 2 in figure, but it should be appreciated by those skilled in the art, in fact, base station 12 ... base station 1K also carrying out communication interaction with multicast service gateway 2, describes in detail at this no longer one by one.
Particularly, step S1 and S2 is described in detail in the embodiment shown in fig. 4, comprises by reference at this, no longer repeats.
Then, in step S3 ', base station 11 according to pre-defined rule, and based on the time of reception of described very first time stamp and synchronizing sequence, calculates the first propagation delay time.Wherein, described pre-defined rule includes but not limited to: 1) when detecting that the interval between the time that the time that synchronizing sequence receives and synchronizing sequence make a reservation for need to send is less than the first predetermined threshold, increase by the first propagation delay time with predetermined step-length; 2) when detecting that the interval between the time that the time that synchronizing sequence receives and synchronizing sequence make a reservation for need to send is greater than the second predetermined threshold, the first propagation delay time etc. is reduced with predetermined step-length.
Such as, base station 11 calculates the interval detected between the time that the time that synchronizing sequence receives and synchronizing sequence make a reservation for need to send, if described interval is too short, such as, be less than the first predetermined threshold, when namely the processing time of base station 11 is inadequate, then base station 11 can increase certain step value to obtain the first propagation delay time on the basis at described interval; And if described interval is long, such as, be greater than the second predetermined threshold, the data volume causing base station 11 needs to store is too much, then certain step value can be reduced to obtain the first propagation delay time in base station 11 on the basis at described interval, but the first propagation delay time obtained after reducing can not be less than the difference of the time of reception of very first time stamp and synchronizing sequence.
Then, step S4 to S6, S1 ', S5 ', S6 ', S7 ', S8 and S9 are described in detail in the embodiment shown in fig. 4, comprise by reference at this, no longer repeat.
Fig. 6 shows another aspect of the present invention in the multicast service gateway of wireless multicast system for detecting the flow chart of the method for multicast data transmission time delay.In order to simplicity of illustration, still be described for the communication interaction between base station 11 and multicast service gateway 2 in figure, but it should be appreciated by those skilled in the art, in fact, base station 12 ... base station 1K also carrying out communication interaction with multicast service gateway 2, describes in detail at this no longer one by one.
Particularly, step S1, S2, S3 ', S4 to S6, S1 ', S5 ', S6 ', S7 ', S8 and S9 be described in detail in the embodiment shown in fig. 5, comprise by reference at this, no longer repeat.
Finally, in step slo, Multicast-Service Center 3 generates the time stab in synchronous protocol based on described multicast data transmission time delay.Such as, Multicast-Service Center 3 generates the time stab in synchronous protocol based on overall delay.
Fig. 7 shows one aspect of the invention in the multicast service gateway of wireless multicast system for detecting the system schematic of multicast data transmission time delay.Wherein, described base station 11 comprises: the 3rd receiving system 111, second calculation element 112, the 3rd dispensing device 113; ... described base station 1K comprises: the 3rd receiving system 1K1, the second calculation element 1K2, the 3rd dispensing device 1K3; Described multicast service gateway 2 comprises: the first dispensing device 21, first receiving device 22, choice device 23, generator 24.
Particularly, the first dispensing device 21 whole base station in multicast network territory periodically sends the first acknowledges requests, wherein comprises very first time stamp.Such as, the first dispensing device 21 periodically sends the first acknowledges requests to all e-NodeBs in single frequency network multicast/broadcast (MBSFN) territory.And in GPRS Tunnel Protocol (GTP) the header extension territory of the first acknowledges requests message, insert a time stab.Time stab unit is 10 milliseconds.
Then, the 3rd receiving system 111 ... the 3rd receiving system 1K1 receive the first acknowledges requests periodically sent by multicast service gateway separately, wherein comprise very first time stamp.Such as, the 3rd receiving system 111 ... the 3rd receiving system 1K1 receive the first acknowledges requests separately, and obtain very first time stamp in the GTP header extension territory of the first acknowledges requests message.
Then, the second calculation element 112 ... second calculation element 1K2 calculate the first propagation delay time based on very first time stamp separately.Such as, second calculation element 112 ... second calculation element 1K2 separately based on very first time stamp and the time of reception receiving synchronizing sequence separately, computing information transfers to the first propagation delay time required for self by multicast service gateway 2, be such as the difference of described very first time stamp and the time of reception receiving synchronizing sequence, that is: the first propagation delay time that the second calculation element 112 calculates is D
gW & NB1... the first propagation delay time that the second calculation element 1K2 calculates is D
gW & NBK.
Then, the 3rd dispensing device 113 ... the 3rd dispensing device 1K3 feed back the first response to described multicast service gateway 2, comprising described first propagation delay time information.Such as, the 3rd dispensing device 113 fills the first propagation delay time D in GPRS Tunnel Protocol (GTP) the header extension territory of the first response message
gW & NB1... the 3rd dispensing device 1K3 fills the first propagation delay time D in GPRS Tunnel Protocol (GTP) the header extension territory of the first response message
gW & NBK.
Then, first receiving device 22 receives all first responses of described whole base station feedback.Such as, first receiving device 22 receives the 3rd dispensing device 113 ... the 3rd the first response of sending separately of dispensing device 1K3, wherein comprise the first propagation delay time information in each first response, such as, the first propagation delay time information comprised in the first response that first receiving device 22 receives from the 3rd dispensing device 113 is D
gW & NB1, the first propagation delay time information of comprising in receiving from the 3rd dispensing device 123 the first response of first receiving device 22 is D
gW & NB2... it is D that first receiving device 22 receives the first propagation delay time information comprised in the first response from the 3rd dispensing device 1K3
gW & NBK.
Then, choice device 23 is selected to grow the first propagation delay time most by each the first propagation delay time information comprised in each response.Such as, choice device 23 is by each the first propagation delay time information: the D comprised in each response
gW & NB1, D
gW & NB2... D
gW & NBKin, select the longest first propagation delay time, such as, be: D
gW & NB2.
Finally, generator 24 based on the longest described first propagation delay time for Multicast-Service Center 3 provides described multicast data transmission Delay.Such as, generator 24 is based on the longest described first propagation delay time: D
gW & NB2for Multicast-Service Center 3 provides described multicast data transmission Delay.
In the multicast service gateway of wireless multicast system, the process detecting multicast data transmission time delay is used for below by based on another aspect of the system specifics shown in Fig. 7.
Particularly, the first dispensing device 21, the 3rd receiving system 111 ... are described in detail with the 3rd receiving system 1K1 in previous embodiment, comprise by reference, no longer repeat at this.
Then, the second calculation element 112 ... second calculation element 1K2 separately according to pre-defined rule, and based on the time of reception of very first time stamp and respective synchronizing sequence, calculate the first propagation delay time.Wherein, described pre-defined rule includes but not limited to: 1) when detecting that the interval between the time that the time that synchronizing sequence receives and synchronizing sequence make a reservation for need to send is less than the first predetermined threshold, increase by the first propagation delay time with predetermined step-length; 2) when detecting that the interval between the time that the time that synchronizing sequence receives and synchronizing sequence make a reservation for need to send is greater than the second predetermined threshold, the first propagation delay time etc. is reduced with predetermined step-length.
Such as, second calculation element 112 calculates the interval detected between the time that the time that synchronizing sequence receives and synchronizing sequence make a reservation for need to send, if described interval is too short, such as, be less than the first predetermined threshold, when namely the processing time of base station 11 is inadequate, then the second calculation element 112 can increase certain step value to obtain the first propagation delay time on the basis at described interval; Again such as, and the second calculation element 1K2 calculates the interval detected between the time that the time that synchronizing sequence receives and synchronizing sequence make a reservation for need to send, if described interval is long, such as, be greater than the second predetermined threshold, the data volume causing base station 1K needs to store is too much, then the second calculation element 1K2 can reduce certain step value to obtain the first propagation delay time on the basis at described interval, but the first propagation delay time obtained after reducing can not be less than the difference of the time of reception of very first time stamp and synchronizing sequence.
Then, the 3rd dispensing device 113 ... the 3rd dispensing device 1K3, first receiving device 22, choice device 23 and generator 24 are described in detail in the embodiment shown in fig. 7, comprise by reference, no longer repeat at this.
Fig. 8 shows another aspect of the present invention in the multicast service gateway of wireless multicast system for detecting the system schematic of multicast data transmission time delay.Wherein, described base station 11 comprises: the 3rd receiving system 111, second calculation element 112, the 3rd dispensing device 113; ... described base station 1K comprises: the 3rd receiving system 1K1, the second calculation element 1K2, the 3rd dispensing device 1K3; Described multicast service gateway 2 comprises: the first dispensing device 21, first receiving device 22, choice device 23, second receiving system 25, first calculation element 26, generator 24; Described Multicast-Service Center comprises: the 4th dispensing device 31, the 4th receiving system 32, acquisition device 33.
Particularly, first dispensing device 21, the 3rd receiving system 111 ... the 3rd receiving system 1K1, the second calculation element 112 ... the second calculation element 1K2, the 3rd dispensing device 113 ... the 3rd dispensing device 1K3, first receiving device 22 and choice device 23 are described in detail in the embodiment shown in fig. 7, comprise by reference at this, no longer repeat.
4th dispensing device 31 periodically sends the second acknowledges requests to multicast service gateway, wherein comprises the second time stab.Such as, the 4th dispensing device 31 is periodically sent in second acknowledges requests of extension field with the second time stab to multimedia broadcast multi-broadcasting business gateway (MBMS GW).
Then, the second receiving system 25 receives the second acknowledges requests from Multicast-Service Center, wherein comprises the second time stab.
Then, the first calculation element 26 calculates the second propagation delay time based on described second time stab.Such as, the first calculation element 26 calculates the second propagation delay time based on the time of reception of described second time stab and synchronizing sequence, such as, be: D
bM-SC & GW.
Then, generator 24 feeds back the second response to described Multicast-Service Center 3, the longest first propagation delay time and the second propagation delay time described in wherein comprising, as described multicast data transmission Delay.Such as, generator 24 calculates overall delay=the longest first propagation delay time+the second propagation delay time, such as, and overall delay=D
bM-SC & GW+ D
gW & NB12; Subsequently, the second response comprising described overall delay is fed back to described Multicast-Service Center 3 by multicast service gateway 2.
Then, the 4th receiving system 32 receives the second response that generator 24 feeds back.
Finally, acquisition device 33 obtains described multicast data transmission Delay by described second response.Such as, described acquisition device 33 directly extracts overall delay information by described second response.
It should be noted that, if generator 24 feeds back to based on the longest first propagation delay time the feedback information that described acquisition device 33 only comprises the longest first propagation delay time, the second response that acquisition device 33 only comprises the second propagation delay time is fed back to again based on the second propagation delay time, the feedback information that then described acquisition device 33 can comprise the longest first propagation delay time by this obtains the longest first propagation delay time and the second propagation delay time respectively with the second response comprising the second propagation delay time, calculates overall delay subsequently.
In addition, those skilled in the art should understand that, the job order of above-mentioned each device is not that the above is limited, in fact, 4th dispensing device 31 can carry out operation with the first dispensing device 21, each 3rd receiving system, each second calculation element simultaneously, also can carry out operation etc. after each first dispensing device 21, each 3rd receiving system, each second calculation element.
Another aspect of the present invention will be described in detail be used for detecting in the multicast service gateway of wireless multicast system the course of work of multicast data transmission time delay below based on the system shown in Fig. 8.
Particularly, the first dispensing device 21, the 3rd receiving system 111 ... the 3rd receiving system 1K1 be described in detail in previous embodiment, comprise by reference at this, no longer repeat.
Then, the second calculation element 112 ... second calculation element 1K2 separately according to pre-defined rule, and based on the time of reception of described very first time stamp and synchronizing sequence, calculate the first propagation delay time.Wherein, described pre-defined rule includes but not limited to: 1) when detecting that the interval between the time that the time that synchronizing sequence receives and synchronizing sequence make a reservation for need to send is less than the first predetermined threshold, increase by the first propagation delay time with predetermined step-length; 2) when detecting that the interval between the time that the time that synchronizing sequence receives and synchronizing sequence make a reservation for need to send is greater than the second predetermined threshold, the first propagation delay time etc. is reduced with predetermined step-length.
Such as, second calculation element 112 calculates the interval detected between the time that the time that synchronizing sequence receives and synchronizing sequence make a reservation for need to send, if described interval is too short, such as, be less than the first predetermined threshold, when namely the processing time of base station 11 is inadequate, then the second calculation element 112 can increase certain step value to obtain the first propagation delay time on the basis at described interval; Again such as, and the second calculation element 1K2 calculates the interval detected between the time that the time that synchronizing sequence receives and synchronizing sequence make a reservation for need to send, if described interval is long, such as, be greater than the second predetermined threshold, the data volume causing base station 1K needs to store is too much, then the second calculation element 1K2 can reduce certain step value to obtain the first propagation delay time on the basis at described interval, but the first propagation delay time obtained after reducing can not be less than the difference of the time of reception of very first time stamp and synchronizing sequence.
Then, 3rd dispensing device 113 ... the 3rd dispensing device 1K3, first receiving device 22, choice device 23, the 4th dispensing device 31, second receiving system 25, first calculation element 26, generator 24, the 4th receiving system 32, acquisition device 33 are described in detail in previous embodiment, comprise by reference at this, no longer repeat.
Fig. 9 shows another aspect of the present invention in the multicast service gateway of wireless multicast system for detecting the system schematic of multicast data transmission time delay.Wherein, described base station 11 comprises: the 3rd receiving system 111, second calculation element 112, the 3rd dispensing device 113; ... described base station 1K comprises: the 3rd receiving system 1K1, the second calculation element 1K2, the 3rd dispensing device 1K3; Described multicast service gateway 2 comprises: the first dispensing device 21, first receiving device 22, choice device 23, second receiving system 25, first calculation element 26, generator 24; Described Multicast-Service Center comprises: the 4th dispensing device 31, the 4th receiving system 32, acquisition device 33, generating apparatus 34.
Particularly, first dispensing device 21, the 3rd receiving system 111 ...: the 3rd receiving system 1K1, the second calculation element 112 ... the second calculation element 1K2, the 3rd dispensing device 113 ... the 3rd dispensing device 1K3, first receiving device 22, choice device 23, second receiving system 25, the 4th dispensing device 31, first calculation element 26, generator 24, the 4th receiving system 32, acquisition device 33 are described in detail in the embodiment shown in fig. 8, comprise by reference at this, no longer repeat.
Finally, generating apparatus 34 generates the time stab in synchronous protocol based on described multicast data transmission time delay.Such as, generating apparatus 34 generates the time stab in synchronous protocol based on overall delay.
To those skilled in the art, obviously the invention is not restricted to the details of above-mentioned one exemplary embodiment, and when not deviating from spirit of the present invention or essential characteristic, the present invention can be realized in other specific forms.Therefore, no matter from which point, all should embodiment be regarded as exemplary, and be nonrestrictive, scope of the present invention is limited by claims instead of above-mentioned explanation, and all changes be therefore intended in the implication of the equivalency by dropping on claim and scope are included in the present invention.Any Reference numeral in claim should be considered as the claim involved by limiting.In addition, obviously " comprising " one word do not get rid of other unit or step, odd number does not get rid of plural number.Multiple unit of stating in system claims or device also can be realized by software or hardware by a unit or device.First, second word such as grade is used for representing title, and does not represent any specific order.
Claims (12)
1. in the multicast service gateway of wireless multicast system for a method for auxiliary detection multicast data transmission time delay, wherein, the method comprises the following steps:
A whole base station in multicast network territory periodically sends the first acknowledges requests, wherein comprises very first time stamp;
Wherein, the method also comprises;
-receive all first responses of described whole base station feedback;
-select to grow the first propagation delay time most by each the first propagation delay time information comprised in each response;
Wherein, the method also comprises:
X based on the longest described first propagation delay time for Multicast-Service Center provides described multicast data transmission Delay.
2. method according to claim 1, wherein, the method also comprises
-receive the second acknowledges requests from Multicast-Service Center, wherein comprise the second time stab;
-calculate the second propagation delay time based on described second time stab;
Wherein, described step X also comprises:
-feed back the second response to described Multicast-Service Center, the longest first propagation delay time and the second propagation delay time described in wherein comprising, as described multicast data transmission Delay.
3. in the base station of wireless multicast system for a method for auxiliary detection multicast data transmission time delay, wherein, the method comprises:
A receives the first acknowledges requests periodically sent by multicast service gateway, wherein comprises very first time stamp;
B according to pre-defined rule, and based on the time of reception of described very first time stamp and synchronizing sequence, calculates the first propagation delay time;
C feeds back the first response to described multicast service gateway, comprising described first propagation delay time information;
Wherein, described pre-defined rule comprises following at least any one:
-when detecting that the interval between the time that the time that synchronizing sequence receives and synchronizing sequence make a reservation for need to send is less than the first predetermined threshold, increase by the first propagation delay time with predetermined step-length;
-when detecting that the interval between the time that the time that synchronizing sequence receives and synchronizing sequence make a reservation for need to send is greater than the second predetermined threshold, reduce the first propagation delay time with predetermined step-length.
4. in the Multicast-Service Center of wireless multicast system for detecting a method for multicast data transmission time delay, wherein, the method comprises:
-periodically send the second acknowledges requests to multicast service gateway, wherein comprise the second time stab;
Wherein, the method also comprises:
-receive described multicast service gateway feedback the second response;
-obtain described multicast data transmission Delay by described second response.
5. method according to claim 4, wherein, also comprises:
-time stab in synchronous protocol is generated based on described multicast data transmission time delay.
6. in wireless multicast system for a multicast service gateway for auxiliary detection multicast data transmission time delay, wherein, comprising:
First dispensing device, periodically sends the first acknowledges requests for base station whole in multicast network territory, wherein comprises very first time stamp;
First receiving device, for receiving all first responses of described whole base station feedback;
Choice device, for selecting to grow the first propagation delay time most by each the first propagation delay time information comprised in each response;
Generator, for based on the longest described first propagation delay time for Multicast-Service Center provides described multicast data transmission Delay.
7. multicast service gateway according to claim 6, wherein, also comprises
Second receiving system, for receiving the second acknowledges requests from Multicast-Service Center, wherein comprises the second time stab;
First calculation element, for calculating the second time tranfer time delay based on described second time stab;
Wherein, described generator is also for feeding back the second response to described Multicast-Service Center, and the longest first propagation delay time described in wherein comprising and the second propagation delay time sum, as described multicast data transmission Delay.
8. in wireless multicast system for a base station for auxiliary detection multicast data transmission time delay, wherein, comprising:
3rd receiving system, for receiving the first acknowledges requests periodically sent by multicast service gateway, wherein comprises very first time stamp;
Second calculation element, for according to pre-defined rule, and based on the time of reception of described very first time stamp and synchronizing sequence, calculates the first propagation delay time;
3rd dispensing device, for feeding back the first response to described multicast service gateway, comprising described first propagation delay time information;
Wherein, described pre-defined rule comprises following at least any one:
-when detecting that the interval between the time that the time that synchronizing sequence receives and synchronizing sequence make a reservation for need to send is less than the first predetermined threshold, increase by the first propagation delay time with predetermined step-length;
-when detecting that the interval between the time that the time that synchronizing sequence receives and synchronizing sequence make a reservation for need to send is greater than the second predetermined threshold, reduce the first propagation delay time with predetermined step-length.
9. in wireless multicast system for detecting a Multicast-Service Center for multicast data transmission time delay, wherein, comprising:
4th dispensing device, for periodically sending the second acknowledges requests to multicast service gateway, wherein comprises the second time stab;
4th receiving system, for receiving the second response of described multicast service gateway feedback;
Acquisition device, for obtaining described multicast data transmission Delay by described second response.
10. Multicast-Service Center according to claim 9, wherein, also comprises:
Generating apparatus, for generating the time stab in synchronous protocol based on described multicast data transmission time delay.
11. 1 kinds of wireless multicast system, comprising multicast service gateway as claimed in claims 6 or 7, base station as claimed in claim 8, Multicast-Service Center as described in claim 9 or 10.
12. wireless multicast system according to claim 11, wherein, described wireless multicast system comprises the MBSFN network system based on 3G or LTE, and described multicast service gateway comprises MBMS GW, and Multicast-Service Center comprises BM-SC, and described base station comprises e-NodeB.
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| CN107113750A (en) | 2014-12-26 | 2017-08-29 | 华为技术有限公司 | A kind of data transmission method and device |
| CN108353368A (en) * | 2015-11-11 | 2018-07-31 | 华为技术有限公司 | Synchronous method and apparatus |
| WO2017185212A1 (en) | 2016-04-25 | 2017-11-02 | 华为技术有限公司 | Multicast delay diagnosis method and apparatus |
| CN106851686B (en) * | 2017-01-22 | 2020-03-31 | 郑州信工智能化系统有限公司 | Method and system for realizing wireless MAC protocol with time compensation data acquisition |
| CN109688594B (en) * | 2017-10-18 | 2022-05-31 | 中国电信股份有限公司 | Time delay monitoring method, base station, terminal and computer storage medium |
| CN116208525A (en) * | 2018-06-06 | 2023-06-02 | 华为技术有限公司 | Method, equipment and system for detecting data message |
| CN113115345A (en) * | 2021-04-20 | 2021-07-13 | 北京壹思达惟信息技术有限公司 | Single frequency network delay dynamic adjustment method and device |
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