CN103188737A - Radio interface data synchronous processing method and radio interface data synchronous processing device - Google Patents
Radio interface data synchronous processing method and radio interface data synchronous processing device Download PDFInfo
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- CN103188737A CN103188737A CN2011104514299A CN201110451429A CN103188737A CN 103188737 A CN103188737 A CN 103188737A CN 2011104514299 A CN2011104514299 A CN 2011104514299A CN 201110451429 A CN201110451429 A CN 201110451429A CN 103188737 A CN103188737 A CN 103188737A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W56/00—Synchronisation arrangements
- H04W56/004—Synchronisation arrangements compensating for timing error of reception due to propagation delay
- H04W56/0045—Synchronisation arrangements compensating for timing error of reception due to propagation delay compensating for timing error by altering transmission time
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Abstract
The invention provides a radio interface data synchronous processing method and a radio interface data synchronous processing device. The radio interface data synchronous processing method and the radio interface data synchronous processing device can ensure that data frames with the same frame number can be synchronously transmitted at radio interfaces of all radio equipment and ensure that influences caused by transmission delay and vibration are eliminated. The radio interface data synchronous processing method includes the steps: (1) the radio equipment RE0 receives a data frame Df transmitted from a radio equipment control center to the radio equipment RE0 through a loading transmission network, and the radio equipment RE0 stores the data frame Df into an internal cache unit of the radio equipment RE0; (2) the radio equipment RE0 reads the data frame Df from the internal cache unit, and then the data frame Df is subjected to processing of a radio frequency processing unit and is sent from a radio interface at the radio interface sending moment Tsend. The radio interface data synchronous processing method can be utilized to enable the data frames with the same frame number to be synchronously transmitted from the radio interfaces of all the radio equipment, and is capable of meeting the requirements of the wireless communication protocol for strict synchronization at the radio interface data sending time.
Description
Technical field
The present invention relates to the communications field, relate in particular to a kind of method and apparatus of the data synchronization processing of eating dishes without rice or wine.
Background technology
Common public radio interface (Common Public Radio Interface, CPRI) alliance is an industrial cooperation tissue, be devoted to be engaged in (the Radio Equipment Control of wireless base station internal wireless equipment control centre, REC) and wireless device (Radio Equipment, RE) between the formulation work of main interface specification.Open base station architecture agreement (Open Base Station Architecture Initiative, OBSAI) be an internationalization tissue that is intended to promote the radio communication base station internal interface standardization, be devoted to realize (the Radio Equipment Control of wireless base station internal wireless equipment control centre equally, REC) and wireless device (Radio Equipment, RE) nuclear interface standardizing between.
Using at present two kinds of maximum base band radio frequency interface agreements in the world is exactly common public radio interface (CPRI) and open base station architecture agreement (OBSAI) interface.Common public radio interface (CPRI) and open base station architecture agreement (OBSAI) interface have all defined maximum loop transmission back time delay and delay variation index request, so-called maximum loop transmission back time delay, refer to that transmission link between REC and RE (does not comprise transmission medium, as optical fiber) two-way maximum transmitted time delay, delay variation refers to transmission link time-delay instability between REC and RE, has drift in time.Although common public radio interface (CPRI) and open base station architecture agreement (OBSAI) interface system adopt time-division data flow transmission means, transmission link time-delay immobilizes between REC and RE in theory, but because there are the various factors that influence delay variation, comprise that electromagnetic interference, circuit are crosstalked and the various noises of components and parts (for example, shot noise, flicker noise and thermal noise etc.), so cause existing between REC and RE the transmission link time-delay shake.
Equally, the home control network communication protocol that life period requires synchronously, the antenna data emission has defined the time synchronized requirement for eating dishes without rice or wine, the what is called time synchronized of eating dishes without rice or wine, refer to that the identical frame number data of each antenna need be in the moment point emission of aliging of eating dishes without rice or wine between interior each antenna in station or station, namely antenna data sends and need satisfy the time synchronized requirement in the station or between the RE between the station, to guarantee the performance index of home control network communication protocol definition.
At present, there is the big pressure that reduces network construction cost in communication operator, cause wireless communication technique to the direction evolution of more high-performance, the more excellent network planning, concentrate placement technique, Long Term Evolution (Long Term Evolution as the wireless base station, LTE) technology etc., with reduce the wireless base station computer room construction, Transmission Fibers is laid, and realizes the centralized maintenance of wireless base station, promote user's experience etc., realize reducing the target of network construction cost.But adopt the transmission plan of the point-to-point or point-to-multipoint of common public radio interface (CPRI) and open base station architecture agreement (OBSAI) interface between existing REC and RE, seriously limited the evolution of these technique directions, need solution badly.Wherein, transmitting data by the carrying transmission network between REC and RE is a kind of important technology directions, this technology has been broken the data transmission mechanism of existing common public radio interface (CPRI) and open base station architecture agreement (OBSAI) interface, can introduce bigger propagation delay time shake, influence home control network communication protocol to the time synchronized requirement of the antenna data emission of eating dishes without rice or wine.
Since between REC and each RE interval such as public telecommunication network (Public Telecom Network, PTN), optical transport network (Optical Transmission Network, OTN) or SDH (Synchronous Digital Hierarchy) (Synchronous Digital Hierarchy, and so on carrying transmission network such as SDH), a RE can't obtain accurate clock to obtain synchronously at clock with REC and other RE from the REC side, and the shake that the processing mode (comprising standard and specification etc.) of carrying transmission network and transmission progression (multi-hop) cause propagation delay time and these propagation delay times to exist, make each RE processing time of eating dishes without rice or wine asynchronous, can not satisfy some in the requirement of eating dishes without rice or wine to send the strict synchronous home control network communication protocol of needs on the data time.
Summary of the invention
The embodiment of the invention provides a kind of method and apparatus of the data synchronization processing of eating dishes without rice or wine, and sends in the air interface synchronization of each wireless device with the Frame that guarantees identical frame number, eliminates the influence that propagation delay time and shake thereof bring.
The embodiment of the invention provides a kind of method of the data synchronization processing of eating dishes without rice or wine, and comprising: wireless device RE
0Receive the wireless device controls center through carrying transmission network to described wireless device RE
0The Frame D that sends
f
Described wireless device RE
0With described Frame D
fDeposit described wireless device RE in
0The inner buffer unit;
Described wireless device RE
0Read described Frame D from described inner buffer unit
f, after the RF processing unit processing, at the delivery time T that eats dishes without rice or wine
SendSend described Frame D from eating dishes without rice or wine
f, described RF processing unit is that described inner buffer unit is exported to the processing module between eating dishes without rice or wine.
Alternatively, described wireless device RE
0Read described Frame D from described inner buffer unit
fAfter the processing of the RF processing unit after the described inner buffer unit, at the delivery time T that eats dishes without rice or wine
SendSend described Frame D from eating dishes without rice or wine
fComprise: at the described delivery time T that eats dishes without rice or wine
SendDeduct time delay T
DelayGained is T constantly, reads described Frame D from described inner buffer unit
f, described time delay T
DelayBe described RF processing unit processing said data frame D
fIn time of needing of any one data; With the described Frame D that reads
fExporting to described RF processing unit handles; With the described Frame D after the described RF processing unit processing
fExport to and eat dishes without rice or wine to eat dishes without rice or wine to send described Frame D from described
f
Alternatively, at the described delivery time T that eats dishes without rice or wine
SendDeduct time delay T
DelayGained is T constantly, reads described Frame D from described inner buffer unit
fAlso comprise: measure described RF processing unit processing said data frame D before
fIn time of needing of any one data.
Alternatively, described wireless device RE
0With described Frame D
fDeposit described wireless device RE in
0The inner buffer unit before also comprise: described wireless device RE
0Obtain pulse per second (PPS) and absolute time information, so that described wireless device RE
0Time and the time synchronized at other wireless devices REs and described wireless device controls center.
Alternatively, described wireless device RE
0Obtain pulse per second (PPS) and absolute time information comprises: described wireless device RE
0Obtain described pulse per second (PPS) and absolute time information by networked clock; Perhaps described wireless device RE
0By described wireless device RE
0External global positioning system is obtained described pulse per second (PPS) and absolute time information; Perhaps described wireless device RE
0By wireless device RE described in the carrying transmission network
0The previous stage transmission equipment obtain described pulse per second (PPS) and absolute time information.
Alternatively, described wireless device RE
0With described Frame D
fDeposit described wireless device RE in
0The inner buffer unit before also comprise: be described wireless device RE
0The inner buffer unit reserve the largest buffered space.
The embodiment of the invention provides a kind of device of the data synchronization processing of eating dishes without rice or wine, and described device is wireless device RE
0, described device comprises: receiver module is used for receiving the wireless device controls center through carrying transmission network to described wireless device RE
0The Frame D that sends
f
Cache module is used for described Frame D
fDeposit described wireless device RE in
0The inner buffer unit;
Synchronization module is used for reading described Frame D from described inner buffer unit
f, after the RF processing unit processing, at the delivery time T that eats dishes without rice or wine
SendSend described Frame D from eating dishes without rice or wine
f, described RF processing unit is that described inner buffer unit is exported to the processing module between eating dishes without rice or wine.
Alternatively, described synchronization module comprises: reading unit is used at the described delivery time T that eats dishes without rice or wine
SendDeduct time delay T
DelayGained is T constantly, reads described Frame D from described inner buffer unit
f, described time delay T
DelayBe described RF processing unit processing said data frame D
fIn time of needing of any one data; First output unit is used for the described Frame D that described reading unit is read
fExporting to described RF processing unit handles; Second output unit is used for the described Frame D after the described RF processing unit processing
fExport to and eat dishes without rice or wine to eat dishes without rice or wine to send described Frame D from described
f
Alternatively, described device also comprises: the latency measurement module is used for measuring described RF processing unit processing said data frame D
fIn time of needing of any one data.
Alternatively, described device also comprises: the temporal information acquisition module is used for obtaining pulse per second (PPS) and absolute time information, so that described wireless device RE
0Time and the time synchronized at other wireless devices REs and described wireless device controls center.
Alternatively, described temporal information acquisition module comprises: first acquiring unit is used for obtaining described pulse per second (PPS) and absolute time information by networked clock; Perhaps, second acquisition unit is used for by described wireless device RE
0External global positioning system is obtained described pulse per second (PPS) and absolute time information; Perhaps, the 3rd acquiring unit is used for by wireless device RE described in the carrying transmission network
0The previous stage transmission equipment obtain described pulse per second (PPS) and absolute time information.
Alternatively, described device also comprises: buffer memory is reserved module, is used to described inner buffer unit to reserve the largest buffered space.
From the invention described above embodiment as can be known, because wireless device can deposit the wireless device controls center in its inner buffer unit through the Frame that the carrying transmission network sends over earlier, after buffer unit read this Frame and process radio frequency processing resume module internally, delivery time sent this Frame from eating dishes without rice or wine eating dishes without rice or wine.Therefore, compared with prior art, method that the embodiment of the invention provides has been eliminated the influence that Frame propagation delay time and shake thereof in transmission course bring, make identical frame number Frame each wireless device eat dishes without rice or wine can synchronized transmission, can satisfy some in the requirement of eating dishes without rice or wine to send the strict synchronous home control network communication protocol of needs on the data time.
Description of drawings
In order to be illustrated more clearly in the technical scheme of the embodiment of the invention, to do to introduce simply to the accompanying drawing of required use in prior art or the embodiment description below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those skilled in the art, can also obtain other accompanying drawing as these accompanying drawings.
Fig. 1 is the method flow schematic diagram of the data synchronization processing of eating dishes without rice or wine that provides of the embodiment of the invention;
Fig. 2 a is the networking schematic diagram of carrying transmission network on the wireless device;
Fig. 2 b is that Frame sends the schematic diagram that arrives each wireless device from the wireless device controls center;
Fig. 3 is the Frame with identical frame number that the embodiment of the invention provides eats dishes without rice or wine to locate synchronized transmission at each wireless device schematic diagram;
Fig. 4 is the Frame with identical frame number that another embodiment of the present invention provides eats dishes without rice or wine to locate synchronized transmission at each wireless device schematic diagram;
Fig. 5 is the apparatus structure schematic diagram of the data synchronization processing of eating dishes without rice or wine that provides of the embodiment of the invention;
Fig. 6 is the apparatus structure schematic diagram of the data synchronization processing of eating dishes without rice or wine that provides of another embodiment of the present invention;
Fig. 7 is the apparatus structure schematic diagram of the data synchronization processing of eating dishes without rice or wine that provides of another embodiment of the present invention;
Fig. 8 is the apparatus structure schematic diagram of the data synchronization processing of eating dishes without rice or wine that provides of another embodiment of the present invention;
Fig. 9 is the apparatus structure schematic diagram of the data synchronization processing of eating dishes without rice or wine that provides of another embodiment of the present invention;
Figure 10 is the apparatus structure schematic diagram of the data synchronization processing of eating dishes without rice or wine that provides of another embodiment of the present 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 only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, the every other embodiment that those skilled in the art obtain belongs to the scope of protection of the invention.
Seeing also accompanying drawing 1, is the method flow schematic diagram of the data synchronization processing of eating dishes without rice or wine that provides of the embodiment of the invention.The method of accompanying drawing 1 example can be used for the transmission that wireless device (RE) is gone up antenna data, also is applicable to grouping CPRI system, non-grouping CPRI system, grouping OBSAI system and non-grouping OBSAI system, mainly comprises step:
S101, wireless device RE
0Receive the Frame D that the wireless device controls center sends to wireless device RE0 through the carrying transmission network
f
In embodiments of the present invention, passage interconnected between RE and the REC is mainly provided by PTN, OTN or SDH equivalent-load transmission network, finish the transmission of related data between local side machine room (mainly comprising REC) and external site (mainly comprising RE), namely, the data that the mind-set wireless device sends in the wireless device controls are transmitted to RE by the transmission equipment on the carrying transmission network at first through the carrying transmission network.Because existing certain difference and data to handle, offered load has priority, data not necessarily can obtain handling in the very first time, therefore the propagation delay time that causes every frame data to arrive wireless device there are differences, and introduces the shake of carrying transmission network propagation delay time.
S102, wireless device RE
0With Frame D
fDeposit wireless device RE in
0The inner buffer unit.
Shown in accompanying drawing 2a, be that (Radio Equipment RE) goes up the networking schematic diagram that carries transmission network to wireless device.In the networking diagram of accompanying drawing 2a signal, wireless device controls center (Radio Equipment Control, REC) (for example insert, by the ring apparatus that converges between REC and the carrying transmission network) the carrying transmission network, if REC sends data to RE, need through the transmission equipment on the carrying transmission network, for example, transmission equipment 0, transmission equipment 1 ..., transmission equipment N etc., could arrive RE.
Because the shake that the processing mode (comprising standard and specification etc.) of carrying transmission network and transmission progression (multi-hop) cause propagation delay time and these propagation delay times to exist, it is inconsistent to make the Frame of the identical frame number that REC sends arrive the moment possibility of each RE.Shown in accompanying drawing 2b, suppose that REC has frame number in Ta transmission simultaneously constantly and is F
kFrame D
fWith Frame D '
f(Frame D
fWith Frame D '
fFrame number is identical, but content can be different).Frame D
fWith Frame D '
fAfter arriving transmission equipment 0, transmission equipment 0 is to wireless device 0 (RE0) transmit data frames D
fThe time, Frame D '
fContinuation is transmitted at the carrying transmission network.Frame D '
fAfter arriving transmission equipment 1 (RE1), transmission equipment 1 is with Frame D '
fTransmit to wireless device 1 (RE1).Frame D
fBe sent to transmission equipment 0 consumed time Teq from REC
0And be sent to wireless device 0 (RE0) consumed time T from transmission equipment 0
Re0Sum T
Eq0+ T
Re0, with Frame D '
fBe sent to transmission equipment 0 consumed time T ' from REC
Eq0, be sent to transmission equipment 1 consumed time T from transmission equipment 0 again
Eq1And be sent to wireless device 1 (RE1) consumed time T from transmission equipment 1 at last
Re1Sum T '
Eq0+ T
Eq1+ T
Re1Unequal.Therefore, though Frame D
fWith Frame D '
fSend to wireless device 0 (RE0) and wireless device 1 (RE1) simultaneously constantly at Ta, but be not to arrive wireless device 0 (RE0) and wireless device 1 (RE1) at synchronization at last.Shown in accompanying drawing 2b, Frame D
fAt last at T
0Constantly arrive wireless device 0 (RE0), Frame D '
fAt T
1Constantly arrive wireless device 1 (RE1).
For the Frame that keeps having identical frame number can synchronized transmission at the place of eating dishes without rice or wine of each wireless device, in embodiments of the present invention, can deposit the inner buffer unit in to the Frame with identical frame number that sends over through the carrying transmission network from the wireless device controls center.For example, for the example of accompanying drawing 2a and accompanying drawing 2b, can the Frame D of identical frame number will be had earlier
fWith Frame D '
fDeposit wireless device 0 (RE0) and wireless device 1 (RE1) inner buffer unit separately respectively in.
S103, wireless device RE
0Buffer unit read data frame D internally
f, after the RF processing unit processing, at the delivery time T that eats dishes without rice or wine
SendSend Frame D from eating dishes without rice or wine
f, RF processing unit is exported to processing module between eating dishes without rice or wine for the inner buffer unit.
As previously mentioned, Frame D
fAt T
0Constantly arrive wireless device 0 (RE0), Frame D '
fAt T
1After constantly arriving wireless device 1 (RE1), passing through the moment that afterwards other functional modules of wireless device 0 (RE0) and wireless device 1 (RE1) inner buffer unit (for example, RF processing unit etc.) dispose respectively is T
00And T
11If wireless device 0 (RE0) and wireless device 1 (RE1) are respectively at T
00The moment and T
11Constantly just with Frame D
fWith Frame D '
fSend from eating dishes without rice or wine separately, because T
00The moment and T
11Not the time point that aligns on the time shaft, then Frame D probably constantly
fWith Frame D '
fNot not synchronized transmission just at the place of eating dishes without rice or wine.
In order to make Frame D
fWith Frame D '
fEating dishes without rice or wine to locate synchronized transmission, in embodiments of the present invention, wireless device RE
0With wireless device RE1 can be respectively from inner buffer unit reads data frame D separately
fWith Frame D '
f, after the RF processing unit processing, at the delivery time T that eats dishes without rice or wine
SendFrom the Frame D that eats dishes without rice or wine to send separately
fWith Frame D '
f
Here need to prove that delivery time T eats dishes without rice or wine
SendIt is a kind of like this moment, namely, for the Frame with identical frame number, need each wireless device to send the moment of this Frame with identical frame number (but the content of Frame can be different) simultaneously at its place of eating dishes without rice or wine with other wireless devices at its place of eating dishes without rice or wine.For example, in the example of accompanying drawing 2a and accompanying drawing 2b, for having identical frame number (F
k) Frame D
fWith Frame D '
f, delivery time T eats dishes without rice or wine
SendBe to receive Frame D
fWireless device 0 the place of eating dishes without rice or wine of wireless device 0 with receive Frame D '
fWireless device 1 (or other wireless devices, for example, wireless device N is if wireless device N also receives and Frame D
fThe identical Frame of frame number) send Frame D simultaneously at the place of eating dishes without rice or wine of wireless device 1
fWith Frame D '
fThe moment, as shown in Figure 3.The delivery time T that eats dishes without rice or wine in Fig. 3 example
Send, wireless device 0 is with the Frame D that receives
fSend, wireless device 1 is the Frame D ' that receives
fSend, just can guarantee Frame D
fWith Frame D '
fBe synchronized transmission at the place of eating dishes without rice or wine.
About the delivery time T that eats dishes without rice or wine
SendObtain, the standard that wireless device can adopt according to wireless device also be derived according to pulse per second (PPS) information and absolute time information, this derivation is stipulated by communication protocol, does not do herein and gives unnecessary details.
The method of the data synchronization processing of eating dishes without rice or wine that provides from the invention described above embodiment as can be known, delivery time is that wireless device sends the moment that this has the Frame of identical frame number at its place of eating dishes without rice or wine simultaneously with other wireless devices at its place of eating dishes without rice or wine owing to eat dishes without rice or wine, and in embodiments of the present invention, wireless device can deposit the wireless device controls center in its inner buffer unit through the Frame that the carrying transmission network sends over earlier, after buffer unit read this Frame and process radio frequency processing resume module internally, delivery time sent this Frame from eating dishes without rice or wine eating dishes without rice or wine.Therefore, compared with prior art, method that the embodiment of the invention provides has been eliminated the influence that Frame propagation delay time and shake thereof in transmission course bring, make identical frame number Frame each wireless device eat dishes without rice or wine can synchronized transmission, can satisfy in the requirement of eating dishes without rice or wine to send the strict synchronous home control network communication protocol of needs on the data time.
As one embodiment of the invention, wireless device RE
0Can be in the following manner buffer unit read data frame D internally
fAfter the processing of the RF processing unit after the inner buffer unit, at the delivery time T that eats dishes without rice or wine
SendSend Frame D from eating dishes without rice or wine
f:
S ' 101, at the delivery time T that eats dishes without rice or wine
SendDeduct time delay T
DelayThe gained moment, T was from wireless device RE
0Inner buffer unit reads data frame D
f
That is, on time shaft, with the delivery time T that eats dishes without rice or wine
SendBe datum mark, it is time delay T that wireless device shifts to an earlier date length
DelayTime from the inner buffer unit reads data frame D of wireless device
f, wherein, time delay T
DelayBe the time that any one data needs in the RF processing unit process frames of data between eating dishes without rice or wine that is exported to of the inner buffer unit of wireless device.As shown in Figure 4, with the delivery time T that eats dishes without rice or wine
SendBe datum mark, wireless device RE
0Length is time delay T in advance
Delay0Time, namely from moment T
Start0Beginning is from its inner buffer unit reads data frame D
f, with the delivery time T that eats dishes without rice or wine
SendBe datum mark, wireless device RE
1Length is time delay T in advance
Delay1Time, namely from moment T
Start1Beginning is from its inner buffer unit reads data frame D '
f(with Frame D
fHas identical frame number).
S ' 102, with the Frame D that reads
fExporting to RF processing unit handles.
In embodiments of the present invention, wireless device RE
0Being exported to of inner buffer unit also have as above all/down conversion module, finite impulse response filter, methods of digital predistortion module between eating dishes without rice or wine and add/go the RF processing unit that cyclic prefix module etc. is formed, with wireless device RE
0Baseband signal convert radiofrequency signal to.
S ' 103, the Frame D after RF processing unit is handled
fAfter export to and eat dishes without rice or wine to send Frame D from eating dishes without rice or wine
f
Frame D
fAfter handling from last functional module of RF processing unit, export to and eat dishes without rice or wine, by the Frame D that eats dishes without rice or wine
fSend.
As wireless device RE
1Also according to above-mentioned wireless device RE
0Step S ' 101 during to step S ' 103 operation, wireless device RE
1At the delivery time T that eats dishes without rice or wine
SendWith Frame D '
fEat dishes without rice or wine to send from it, so, guaranteed wireless device RE
0With wireless device RE
1The synchronous processing of eating dishes without rice or wine.
Need to prove, the time that any one data needs in the RF processing unit process frames of data in each wireless device, that is, and time delay T
DelayFor each wireless device, fix.In embodiments of the present invention, the time that any one data needs in the RF processing unit process frames of data in each wireless device can obtain by the method for measuring.For example, for wireless device RE
0, can be at the delivery time T that eats dishes without rice or wine
SendDeduct time delay T
DelayThe gained moment, T was from its inner buffer unit reads data frame D
fBefore, to time delay T
Delay0Measure, namely measure wireless device RE
0RF processing unit process frames of data D
fIn time of needing of any one data.
In embodiments of the present invention, wireless device sends over the wireless device controls center through the carrying transmission network Frame deposits in before its inner buffer unit, can obtain pulse per second (PPS) and absolute time information, so that the time synchronized at the time of this wireless device and other wireless devices and wireless device controls center.For example, for the wireless device RE in the previous embodiment
0, at the Frame D that the wireless device controls central side is sent
fDeposit before the inner buffer unit wireless device RE in
0Obtain pulse per second (PPS) and absolute time information, so that wireless device RE
0Time and the time synchronized of wireless device controls center and other wireless devices REs.
Concrete grammar can be, wireless device perhaps, obtains pulse per second (PPS) and absolute time information by the external global positioning system of wireless device by networked clock, perhaps, and by wireless device RE in the carrying transmission network
0The previous stage transmission equipment obtain pulse per second (PPS) and absolute time information.For example, for the wireless device RE in the previous embodiment
0, wireless device RE
0By network interface with boundary clock (Boundary Clock, BC)/the source clock (Original Clock, OC) etc. mode is obtained 1588v2 temporal information bag, and this temporal information bag is resolved, and obtains pulse per second (PPS) and absolute time information, perhaps, by wireless device RE
0External global positioning system is obtained pulse per second (PPS) and absolute time information, perhaps, and wireless device RE
0The previous stage transmission equipment as networked clock destination node, wireless device RE
0Interface by some definition obtains pulse per second (PPS) and absolute clock information from this previous stage transmission equipment, and the technical scheme of the embodiment of the invention is not done concrete restriction to the mode of obtaining pulse per second (PPS) and absolute time information.
In addition, the spatial cache of the inner buffer unit of wireless device can be reserved.For example, in embodiments of the present invention, wireless device RE0 sends through the carrying transmission network Frame from the wireless device controls center that receives to wireless device RE0 deposits in before the inner buffer unit, can reserve the largest buffered space for the inner buffer unit.Particularly, can reserve the largest buffered space according to the limit for the inner buffer unit according to system frame number, the foundation of the reservation in largest buffered space is: the maximum processing under the specification conditions, can reserve the maximum data spatial cache of handling number of frames of this wireless device.Each wireless device possibility is different and different because of wireless standard and bandwidth.For example, for LTE Frequency Division Duplexing (FDD) (Frequency Division Duplexing, FDD) this wireless standard, be that 20M, antenna are 4 to receive 4 (Four Transmit Four Receive in bandwidth, under MIMO mode 4T4R), the component data in the same way of antenna and forward component data all are 16bit (bit), according to 30.72MHz (corresponding with the 20M bandwidth) sample rate, when not considering processing modes such as compression, the largest buffered space that Frame of inner buffer unit caches need be reserved is 30.72 * 2 * 16 * 4/1000=3.93216Mbit.
Seeing also accompanying drawing 5, is the apparatus structure schematic diagram of the data synchronization processing of eating dishes without rice or wine that provides of the embodiment of the invention.For convenience of explanation, only show the part relevant with the embodiment of the invention.The device of the data synchronization processing of eating dishes without rice or wine of accompanying drawing 5 examples can be that wireless device is (following with wireless device RE
0For example describes), it comprises receiver module 501, cache module 502 and synchronization module 503, wherein:
In embodiments of the present invention, wireless device (Radio Equipment, RE) with wireless device controls center (Radio Equipment Control, REC) passage interconnected between is mainly by public telecommunication network (Public Telecom Network, PTN), optical transport network (Optical Transmission Network, OTN) or SDH (Synchronous Digital Hierarchy) (Synchronous Digital Hierarchy, SDH) etc. and so on carrying transmission network provides, finish the transmission of related data between local side machine room (mainly comprising the wireless device controls center) and external site (mainly comprising wireless device), namely, the data that the mind-set wireless device sends in the wireless device controls are transmitted to wireless device by the transmission equipment on the carrying transmission network at first through the carrying transmission network.Because existing certain difference and data to handle, offered load has priority, data not necessarily can obtain handling in the very first time, therefore the propagation delay time that causes every frame data to arrive wireless device there are differences, and introduces the shake of carrying transmission network propagation delay time.
Shown in accompanying drawing 2a, it is the networking schematic diagram of carrying transmission network on the wireless device.In the networking diagram of accompanying drawing 2a signal, the wireless device controls center (is for example inserted, by the ring apparatus that converges between wireless device controls center and the carrying transmission network) the carrying transmission network, if the mind-set wireless device sends data in the wireless device controls, need through the transmission equipment on the carrying transmission network, for example, transmission equipment 0, transmission equipment 1 ..., transmission equipment N etc., could arrive wireless device.
Because the shake that the processing mode (comprising standard and specification etc.) of carrying transmission network and transmission progression (multi-hop) cause propagation delay time and these propagation delay times to exist, it is inconsistent to make that the Frame of the identical frame number that the wireless device controls center sends arrives the moment possibility of each wireless device.Shown in accompanying drawing 2b, assumed wireless equipment control centre has frame number in Ta transmission simultaneously constantly and is F
kFrame D
fWith Frame D '
f(Frame D
fWith Frame D '
fFrame number is identical, but content can be different).Frame D
fWith Frame D '
fAfter arriving transmission equipment 0, transmission equipment 0 is to wireless device 0 (RE0) transmit data frames D
fThe time, Frame D '
fContinuation is transmitted at the carrying transmission network.Frame D '
fAfter arriving transmission equipment 1 (RE1), transmission equipment 1 is with Frame D '
fTransmit to wireless device 1 (RE1).Frame D
fBe sent to transmission equipment 0 consumed time T from REC
Eq0And be sent to wireless device 0 (RE0) consumed time T from transmission equipment 0
Re0Sum T
Eq0+ T
Re0, with Frame D '
fBe sent to transmission equipment 0 consumed time T ' from REC
Eq0, be sent to transmission equipment 1 consumed time T from transmission equipment 0 again
Eq1And be sent to wireless device 1 (RE1) consumed time T from transmission equipment 1 at last
Re1Sum T '
Eq0+ T
Eq1+ T
Re1Unequal.Therefore, though Frame D
fWith Frame D '
fSend to wireless device 0 (RE0) and wireless device 1 (RE1) simultaneously constantly at Ta, but be not to arrive wireless device 0 (RE0) and wireless device 1 (RE1) at synchronization at last.Shown in accompanying drawing 2b, Frame D
fAt last at T
0Constantly arrive wireless device 0 (RE0), Frame D '
fAt T
1Constantly arrive wireless device 1 (RE1).
For the Frame that keeps having identical frame number can synchronized transmission at the place of eating dishes without rice or wine of each wireless device, in the present embodiment, cache module 502 can deposit the inner buffer unit in to the Frame with identical frame number that sends over through the carrying transmission network from the wireless device controls center.For example, for the example of accompanying drawing 2a and accompanying drawing 2b, the cache module 502 of wireless device 0 can will have the Frame D of identical frame number earlier with the cache module 502 of wireless device 1
fWith Frame D '
fDeposit wireless device 0 (RE0) and wireless device 1 (RE1) inner buffer unit separately respectively in.
As previously mentioned, Frame D
fAt T
0Constantly arrive wireless device 0 (RE0), Frame D '
fAt T
1After constantly arriving wireless device 1 (RE1), passing through the moment that afterwards other functional modules of wireless device 0 (RE0) and wireless device 1 (RE1) inner buffer unit (for example, RF processing unit etc.) dispose respectively is T
00And T
11If wireless device 0 (RE0) and wireless device 1 (RE1) are respectively at T
00The moment and T
11Constantly just with Frame D
fWith Frame D '
fSend from eating dishes without rice or wine separately, because T
00The moment and T
11Not the time point that aligns on the time shaft, then Frame D probably constantly
fWith Frame D '
fNot not synchronized transmission just at the place of eating dishes without rice or wine.
In order to make Frame D
fWith Frame D '
fEating dishes without rice or wine to locate synchronized transmission, in embodiments of the present invention, the synchronization module 503 of wireless device RE0 and wireless device RE1 can be respectively from inner buffer unit reads data frame D separately
fWith Frame D '
f, after the RF processing unit processing, at the delivery time T that eats dishes without rice or wine
SendFrom the Frame D that eats dishes without rice or wine to send separately
fWith Frame D '
f
Here need to prove that delivery time T eats dishes without rice or wine
SendIt is a kind of like this moment, namely, for the Frame with identical frame number, need each wireless device to send the moment of this Frame with identical frame number (but the content of Frame can be different) simultaneously at its place of eating dishes without rice or wine with other wireless devices at its place of eating dishes without rice or wine.For example, in the example of accompanying drawing 2a and accompanying drawing 2b, for having identical frame number (F
k) Frame D
fWith Frame D '
f, delivery time T eats dishes without rice or wine
SendBe to receive Frame D
fWireless device 0 the place of eating dishes without rice or wine of wireless device 0 with receive Frame D '
fWireless device 1 (or other wireless devices, for example, wireless device N is if wireless device N also receives and Frame D
fThe identical Frame of frame number) send Frame D simultaneously at the place of eating dishes without rice or wine of wireless device 1
fWith Frame D '
fThe moment, as shown in Figure 3.The delivery time T that eats dishes without rice or wine in Fig. 3 example
Send, wireless device 0 is with the Frame D that receives
fSend, wireless device 1 is the Frame D ' that receives
fSend, just can guarantee Frame D
fWith Frame D '
fBe synchronized transmission at the place of eating dishes without rice or wine.
About the delivery time T that eats dishes without rice or wine
SendObtain, the standard that wireless device can adopt according to wireless device also be derived according to pulse per second (PPS) information and absolute time information, this derivation is stipulated by communication protocol, does not do herein and gives unnecessary details.
Need to prove, in the execution mode of the device of the data synchronization processing of more than eating dishes without rice or wine, the division of each functional module only illustrates, can be as required in the practical application, for example the facility of the realization of the configuration requirement of corresponding hardware or software is considered, finished by different functional modules and above-mentioned functions distributed, the internal structure of the device of the data synchronization processing that is about to eat dishes without rice or wine is divided into different functional modules, to finish all or part of function described above.And in the practical application, the corresponding functional module in the present embodiment can be to be realized by corresponding hardware, also can carry out corresponding software by corresponding hardware and finish, and for example, aforesaid cache module can be to have the aforementioned just Frame D of execution
fDeposit wireless device RE in
0The hardware of inner buffer unit, buffer for example, thus also can be to carry out general processor or other hardware devices that the corresponding computer program is finished aforementioned functional; Aforesaid sending module for another example, can be have carry out aforementioned at the delivery time T that eats dishes without rice or wine
SendSend the Frame D that the inner buffer unit deposits in from eating dishes without rice or wine
fThe hardware of function, transmitter for example, thus also can be to carry out general processor or other hardware devices (each embodiment that this specification provides can use the foregoing description principle) that the corresponding computer program is finished aforementioned functional.
The sending module 503 of accompanying drawing 5 examples can also comprise reading unit 601, first output unit 602 and second output unit, the device of the data synchronization processing of eating dishes without rice or wine that another embodiment of the present invention provides as shown in Figure 6, wherein:
Reading unit 601 is used at the delivery time T that eats dishes without rice or wine
SendDeduct time delay T
DelayGained is T, buffer unit read data frame D internally constantly
f, time delay T
DelayBe RF processing unit process frames of data D
fIn time of needing of any one data.
That is, on time shaft, with the delivery time T that eats dishes without rice or wine
SendBe datum mark, reading unit 601 length in advance is time delay T
DelayTime from the inner buffer unit reads data frame D of wireless device
f, wherein, time delay T
DelayBe the time that any one data needs in the RF processing unit process frames of data between eating dishes without rice or wine that is exported to of the inner buffer unit of wireless device.As shown in Figure 4, with the delivery time T that eats dishes without rice or wine
SendBe datum mark, wireless device RE
0Reading unit 601 in advance length be time delay T
Delay0Time, that is, and from moment T
Start0Beginning is from its inner buffer unit reads data frame D
fWith the delivery time T that eats dishes without rice or wine
SendBe datum mark, wireless device RE
1Reading unit 601 in advance length be time delay T
Delay1Time, that is, and from moment T
Start1Beginning is from its inner buffer unit reads data frame D '
f(with Frame D
fHas identical frame number).
In the present embodiment, wireless device RE
0Or wireless device RE
1Being exported to of inner buffer unit also have as above all/down conversion module, finite impulse response filter, methods of digital predistortion module between eating dishes without rice or wine and add/go the RF processing unit that cyclic prefix module etc. is formed, with wireless device RE
0Or wireless device RE
1Baseband signal convert radiofrequency signal to.
Need to prove, the time that any one data needs in the RF processing unit process frames of data in each wireless device, that is, and time delay T
DelayFor each wireless device, fix.In embodiments of the present invention, the time that any one data needs in the RF processing unit process frames of data in each wireless device can obtain by the method for measuring.For example, for wireless device RE
0, can be at the delivery time T that eats dishes without rice or wine
SendDeduct time delay T
DelayThe gained moment, T was from its inner buffer unit reads data frame D
fBefore, to time delay T
Delay0Measure, that is, measure wireless device RE
0RF processing unit process frames of data D
fIn time of needing of any one data.Therefore, the device of the data synchronization processing of eating dishes without rice or wine of accompanying drawing 6 examples can also comprise latency measurement module 701, the device of the data synchronization processing of eating dishes without rice or wine that another embodiment of the present invention provides as shown in Figure 7.Latency measurement module 701 is used for measuring wireless device RE
0RF processing unit process frames of data D
fIn any one data required time.
The device of the data synchronization processing of eating dishes without rice or wine of accompanying drawing 5 examples can also comprise temporal information acquisition module 801, the device of the data synchronization processing of eating dishes without rice or wine that another embodiment of the present invention provides as shown in Figure 8.Temporal information acquisition module 801 is used for obtaining pulse per second (PPS) and absolute time information, so that wireless device RE
0Time and the time synchronized of wireless device controls center and other wireless devices REs.
The temporal information acquisition module 801 of accompanying drawing 8 examples can also comprise first acquiring unit 901, second acquisition unit 902 or the 3rd acquiring unit 903, the device of the data synchronization processing of eating dishes without rice or wine that another embodiment of the present invention provides as shown in Figure 9, wherein:
First acquiring unit 901 is used for obtaining pulse per second (PPS) and absolute time information by networked clock.For example, for the wireless device RE in the present embodiment
0, wireless device RE
0 First acquiring unit 901 by network interface with boundary clock (Boundary Clock, BC)/(Original Clock, OC) etc. mode is obtained 1588v2 temporal information bag to the source clock, and this temporal information bag is resolved, and obtains pulse per second (PPS) and absolute time information.
The 3rd acquiring unit 903 is used for by carrying transmission network wireless device RE
0The previous stage transmission equipment obtain pulse per second (PPS) and absolute time information.Such as, with wireless device RE
0The previous stage transmission equipment as networked clock destination node, wireless device RE
0The interface of the 3rd acquiring unit 903 by some definition obtain pulse per second (PPS) and absolute clock information from this previous stage transmission equipment.
Need to prove that the technical scheme of the embodiment of the invention is not done concrete restriction to the mode of obtaining pulse per second (PPS) and absolute time information.
The device of the data synchronization processing of eating dishes without rice or wine of accompanying drawing 5 examples can also comprise buffer memory reservation module 1001, the device of the data synchronization processing of eating dishes without rice or wine that another embodiment of the present invention provides as shown in Figure 10.Buffer memory is reserved module 1001 and is used to wireless device RE
0The inner buffer unit reserve the largest buffered space.Particularly, buffer memory is reserved module 1001 can reserve the largest buffered space according to the limit for the inner buffer unit according to system frame number, the foundation of the reservation in largest buffered space is: the maximum processing under the specification conditions, can reserve the maximum data spatial cache of handling number of frames of this wireless device.Each wireless device possibility is different and different because of wireless standard and bandwidth.For example, for LTE Frequency Division Duplexing (FDD) (Frequency Division Duplexing, FDD) this wireless standard, be that 20M, antenna are 4 to receive 4 (Four Transmit Four Receive in bandwidth, under MIMO mode 4T4R), the component data in the same way of antenna and forward component data all are 16bit (bit), according to 30.72MHz (corresponding with the 20M bandwidth) sample rate, when not considering processing modes such as compression, the largest buffered space that Frame of inner buffer unit caches need be reserved is 30.72 * 2 * 16 * 4/1000=3.93216Mbit.
Need to prove, contents such as the information interaction between each module/unit of said apparatus, implementation, since with the inventive method embodiment based on same design, its technique effect that brings is identical with the inventive method embodiment, particular content can repeat no more referring to the narration among the inventive method embodiment herein.
One of ordinary skill in the art will appreciate that all or part of step in the whole bag of tricks of above-described embodiment is to instruct relevant hardware to finish by program, such as following the whole bag of tricks one or more or all:
Wireless device RE
0Receive the wireless device controls center through carrying transmission network to wireless device RE
0The Frame D that sends
f,
Wireless device RE
0With Frame D
fDeposit wireless device RE in
0The inner buffer unit;
Wireless device RE
0Buffer unit read data frame D internally
f, after the RF processing unit processing, at the delivery time T that eats dishes without rice or wine
SendSend Frame D from eating dishes without rice or wine
f, RF processing unit is exported to processing module between eating dishes without rice or wine for the inner buffer unit.
One of ordinary skill in the art will appreciate that all or part of step in the whole bag of tricks of above-described embodiment is to instruct relevant hardware to finish by program, this program can be stored in the computer-readable recording medium, storage medium can comprise: read-only memory (ROM, Read Only Memory), random access memory (RAM, Random Access Memory), disk or CD etc.
More than the method and apparatus of a kind of data synchronization processing of eating dishes without rice or wine that the embodiment of the invention is provided be described in detail, used specific case herein principle of the present invention and execution mode are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (12)
1. the method for the data synchronization processing of eating dishes without rice or wine is characterized in that, described method comprises:
Wireless device RE
0Receive the wireless device controls center through carrying transmission network to described wireless device RE
0The Frame D that sends
f
Described wireless device RE
0With described Frame D
fDeposit described wireless device RE in
0The inner buffer unit;
Described wireless device RE
0Read described Frame D from described inner buffer unit
f, after the RF processing unit processing, at the delivery time T that eats dishes without rice or wine
SendSend described Frame D from eating dishes without rice or wine
f, described RF processing unit is that described inner buffer unit is exported to the processing module between eating dishes without rice or wine.
2. the method for claim 1 is characterized in that, described wireless device RE
0Read described Frame D from described inner buffer unit
fAfter the processing of the RF processing unit after the described inner buffer unit, at the delivery time T that eats dishes without rice or wine
SendSend described Frame D from eating dishes without rice or wine
fComprise:
At the described delivery time T that eats dishes without rice or wine
SendDeduct time delay T
DelayGained is T constantly, reads described Frame D from described inner buffer unit
f, described time delay T
DelayBe described RF processing unit processing said data frame D
fIn time of needing of any one data;
With the described Frame D that reads
fExporting to described RF processing unit handles;
With the described Frame D after the described RF processing unit processing
fExport to and eat dishes without rice or wine to eat dishes without rice or wine to send described Frame D from described
f
3. method as claimed in claim 2 is characterized in that, at the described delivery time T that eats dishes without rice or wine
SendDeduct time delay T
DelayGained is T constantly, reads described Frame D from described inner buffer unit
fAlso comprise before:
Measure described RF processing unit processing said data frame D
fIn time of needing of any one data.
4. as any described method of claim 1 to 3, it is characterized in that described wireless device RE
0With described Frame D
fDeposit described wireless device RE in
0The inner buffer unit before also comprise:
Described wireless device RE
0Obtain pulse per second (PPS) and absolute time information, so that described wireless device RE
0Time and the time synchronized at other wireless devices REs and described wireless device controls center.
5. method as claimed in claim 4 is characterized in that, described wireless device RE
0Obtain pulse per second (PPS) and absolute time information comprises:
Described wireless device RE
0Obtain described pulse per second (PPS) and absolute time information by networked clock; Perhaps
Described wireless device RE
0By described wireless device RE
0External global positioning system is obtained described pulse per second (PPS) and absolute time information; Perhaps
Described wireless device RE
0By wireless device RE described in the carrying transmission network
0The previous stage transmission equipment obtain described pulse per second (PPS) and absolute time information.
6. as any described method of claim 1 to 3, it is characterized in that described wireless device RE
0With described Frame D
fDeposit described wireless device RE in
0The inner buffer unit before also comprise:
Be described wireless device RE
0The inner buffer unit reserve the largest buffered space.
7. the device of the data synchronization processing of eating dishes without rice or wine is characterized in that, described device is wireless device RE
0, described device comprises:
Receiver module is used for receiving the wireless device controls center through carrying transmission network to described wireless device RE
0The Frame D that sends
f
Cache module is used for described Frame D
fDeposit described wireless device RE in
0The inner buffer unit;
Synchronization module is used for reading described Frame D from described inner buffer unit
f, after the RF processing unit processing, at the delivery time T that eats dishes without rice or wine
SendSend described Frame D from eating dishes without rice or wine
f, described RF processing unit is that described inner buffer unit is exported to the processing module between eating dishes without rice or wine.
8. device as claimed in claim 7 is characterized in that, described synchronization module comprises:
Reading unit is used at the described delivery time T that eats dishes without rice or wine
SendDeduct time delay T
DelayGained is T constantly, reads described Frame D from described inner buffer unit
f, described time delay T
DelayBe described RF processing unit processing said data frame D
fIn time of needing of any one data;
First output unit is used for the described Frame D that described reading unit is read
fExporting to described RF processing unit handles;
Second output unit is used for the described Frame D after the described RF processing unit processing
fExport to and eat dishes without rice or wine to eat dishes without rice or wine to send described Frame D from described
f
9. device as claimed in claim 8 is characterized in that, described device also comprises:
The latency measurement module is used for measuring described RF processing unit processing said data frame D
fIn time of needing of any one data.
10. as any described device of claim 7 to 9, it is characterized in that described device also comprises:
The temporal information acquisition module is used for obtaining pulse per second (PPS) and absolute time information, so that described wireless device RE
0Time and the time synchronized at other wireless devices REs and described wireless device controls center.
11. device as claimed in claim 10 is characterized in that, described temporal information acquisition module comprises:
First acquiring unit is used for obtaining described pulse per second (PPS) and absolute time information by networked clock; Perhaps,
Second acquisition unit is used for by described wireless device RE
0External global positioning system is obtained described pulse per second (PPS) and absolute time information; Perhaps,
The 3rd acquiring unit is used for by wireless device RE described in the carrying transmission network
0The previous stage transmission equipment obtain described pulse per second (PPS) and absolute time information.
12. as any described device of claim 7 to 9, it is characterized in that described device also comprises:
Buffer memory is reserved module, is used to described inner buffer unit to reserve the largest buffered space.
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|---|---|---|---|
| CN201110451429.9A CN103188737B (en) | 2011-12-29 | 2011-12-29 | A kind of method and apparatus of data synchronization processing of eating dishes without rice or wine |
| PCT/CN2012/087769 WO2013097754A1 (en) | 2011-12-29 | 2012-12-28 | Method and apparatus for synchronization processing of air-interface data |
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|---|---|---|---|
| CN201110451429.9A CN103188737B (en) | 2011-12-29 | 2011-12-29 | A kind of method and apparatus of data synchronization processing of eating dishes without rice or wine |
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| CN103188737B CN103188737B (en) | 2016-03-30 |
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| CN104507154A (en) * | 2014-11-20 | 2015-04-08 | 上海华为技术有限公司 | Data transmission method, communication equipment and communication system |
| CN111708624A (en) * | 2020-06-16 | 2020-09-25 | 北京百度网讯科技有限公司 | Concurrency distribution method, device, equipment and storage medium based on multiple transmitters |
| CN113765839A (en) * | 2020-06-03 | 2021-12-07 | 华为技术有限公司 | Air interface time synchronization method and equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106656385B (en) * | 2015-10-29 | 2019-03-05 | 华为技术有限公司 | The method for synchronizing time of eating dishes without rice or wine of relay system, equipment |
| CN107548092B (en) * | 2017-08-04 | 2021-01-26 | 深圳市盛路物联通讯技术有限公司 | Distributed network delay data processing method and system |
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| Publication number | Publication date |
|---|---|
| WO2013097754A1 (en) | 2013-07-04 |
| CN103188737B (en) | 2016-03-30 |
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