CN103533630B - Eat dishes without rice or wine method for synchronizing time and system, wireless device, radio equipment controller - Google Patents
Eat dishes without rice or wine method for synchronizing time and system, wireless device, radio equipment controller Download PDFInfo
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Abstract
The embodiment of the invention discloses one to eat dishes without rice or wine method for synchronizing time and system, wireless device, radio equipment controller, for realizing the time synchronized of eating dishes without rice or wine of RE side.The method comprise the steps that wireless device RE receives the Frame that radio equipment controller REC sends, described Frame carries temporal information；The data carried in described Frame are sent, it is possible to effectively realize the time synchronized of eating dishes without rice or wine of RE side according to described temporal information.
Description
Technical field
The present invention relates to communication technical field, particularly relate to eat dishes without rice or wine method for synchronizing time and system, wireless set
Standby, radio equipment controller.
Background technology
At present, using most two kind baseband radio interface protocol in the world is common public radio interface
(Common Public Radio Interface, CPRI) and open base station architecture agreement (Open Base
Station Architecture Initiative, OBSAI) interface.CPRI interface and OBSAI interface system are adopted
Using time division data stream transmission mode, interface shape can be electricity mouth or light mouth, is formed based on these two kinds of interfaces
Traditional base station system topology have hub-and-spoke configuration, chain structure, tree structure, loop configuration etc..
CPRI interface and OBSAI interface all define maximum loop transmission back time delay (Round-Trip Time,
RTT) and the standard of delay variation, wherein, maximum loop transmission back time delay refers to radio equipment controller (Radio
Equipment Control, REC) with wireless device (Radio Equipment, RE) between transmission link
Two-way maximum transmitted time delay, delay variation then refers between REC and RE that transmission link time-delay is unstable,
Drift is there is in the time.In order to ensure the reliability of data transmission, in existing home control network communication protocol,
Antenna data of eating dishes without rice or wine is launched the requirement defining time synchronized of eating dishes without rice or wine, in time synchronized of eating dishes without rice or wine refers to each station
Between antenna or station, antenna same number of frames number needs in moment point transmitting of aliging of eating dishes without rice or wine, i.e. in station or between station
Between RE, antenna data sends to need to meet and synchronizes requirement, to ensure the performance indications that home control network communication protocol defines.
Along with the development of the network communications technology, wireless communication technique is to higher performance, the more excellent network planning
Direction evolution, as placement technique, Long Term Evolution (the Long Time of development are concentrated in wireless base station
Evolution-Advanced, LTE-A) technology, indoor universal wireless access system etc., wireless to reduce
Base station machine room is built, Transmission Fibers is laid, it is achieved the centralized maintenance of wireless base station and the local room of low cost
Interior covering etc..Due in prior art, between REC and RE, use CPRI interface or OBSAI interface
Point-to-point or the transmission method of point-to-multipoint, will limit the development of above-mentioned technology, therefore, REC and RE
Between by ethernet switched network or transmission network carrying realize data packetization transmission become important
Technological evolvement direction.
But, between the RE of REC territory, the biography of data is realized by ether exchange network or carrying transmission network
Time defeated, owing on ether exchange network or carrying transmission network, equipment is numerous, data need from REC to RE
Will be through Multi-stage transmission transfer device, the transfer mode of each equipment and processing mode there is also bigger difference, will
Cause propagation delay time and delay variation so that RE eats dishes without rice or wine to process time irreversibility, it is impossible to meet wireless telecommunications
The requirement of the time synchronized of eating dishes without rice or wine of agreement.
Summary of the invention
Embodiments provide one eat dishes without rice or wine method for synchronizing time and system, wireless device, wireless set
Preparation controller, for realizing the time synchronized of eating dishes without rice or wine of RE side.
Method for synchronizing time of eating dishes without rice or wine in the embodiment of the present invention includes:
Wireless device RE receives the Frame that radio equipment controller REC sends, and takes in described Frame
Band temporal information；
The data carried in described Frame are sent according to described temporal information.
Method for synchronizing time of eating dishes without rice or wine in the embodiment of the present invention includes:
Wireless controller REC determines that wireless device RE sends the temporal information of the data carried in Frame；
Described temporal information is carried in described Frame, is sent to described RE.
Wireless device in the embodiment of the present invention includes:
Receive unit, for receiving the Frame that radio equipment controller REC sends, in described Frame
Carry temporal information；
Processing unit, for sending the data carried in described Frame according to described temporal information.
Wireless control apparatus in the embodiment of the present invention includes:
Determine unit, for determining that wireless device RE sends the temporal information of the data carried in Frame；
Transmitting element, is sent to described RE for described temporal information being carried in described Frame.
Clock synchronization system of eating dishes without rice or wine in the embodiment of the present invention includes:
Wireless device and wireless control apparatus；
Described wireless device includes: receive unit, for receiving the number that radio equipment controller REC sends
According to frame, described Frame carries temporal information；Processing unit, for sending according to described temporal information
The data carried in described Frame；
Described wireless control apparatus comprises determining that unit, is used for determining that wireless device RE sends in Frame
The temporal information of the data carried；Transmitting element, for carrying described temporal information at described Frame
In be sent to described RE.
As can be seen from the above technical solutions, the embodiment of the present invention has the advantage that
RE receive REC send the Frame carrying temporal information, and according to this temporal information determine send out
Give the data carried in this Frame, it is possible to effectively realize the time synchronized of eating dishes without rice or wine of RE side.
Accompanying drawing explanation
Fig. 1 is the Organization Chart being connected by Ethernet switch between REC with RE in the embodiment of the present invention；
Fig. 2 is that in the embodiment of the present invention, REC concentrates the Organization Chart placed；
Fig. 3 is the schematic diagram of embodiment of method of time synchronized of eating dishes without rice or wine in the embodiment of the present invention；
Fig. 4 is another schematic diagram of embodiment of method of time synchronized of eating dishes without rice or wine in the embodiment of the present invention；
Fig. 5 is another schematic diagram of embodiment of method of time synchronized of eating dishes without rice or wine in the embodiment of the present invention；
Fig. 6 is another schematic diagram of embodiment of method of time synchronized of eating dishes without rice or wine in the embodiment of the present invention；
Fig. 7 is another schematic diagram of embodiment of method of time synchronized of eating dishes without rice or wine in the embodiment of the present invention；
Fig. 8 is another schematic diagram of embodiment of method of time synchronized of eating dishes without rice or wine in the embodiment of the present invention；
Fig. 9 is a schematic diagram of the embodiment of wireless device in the embodiment of the present invention；
Figure 10 is another schematic diagram of the embodiment of wireless device in the embodiment of the present invention；
Figure 11 is a schematic diagram of the embodiment of radio equipment controller in the embodiment of the present invention；
Figure 12 is the schematic diagram of embodiment of clock synchronization system of eating dishes without rice or wine in the embodiment of the present invention.
Detailed description of the invention
Embodiments provide one eat dishes without rice or wine method for synchronizing time and system, wireless device, wireless set
Preparation controller, for realizing the time synchronized of eating dishes without rice or wine between RE.
In embodiments of the present invention, CPRI interface and OBSAI interface use time division data stream transmission mode
Transmit data, and packetizing transmission in base station carries out pack mode by carrying transmission network or ether exchange network
Data transmit, wherein, base station data packetizing transmission interface shape can be light mouth or electricity mouth quick
Ethernet (Fast Ethernet, FE) or gigabit Ethernet (Gigabit Ethernet, GE) or ten thousand
Mbit ethernet (10Gigabit Ethernet, 10GE) etc., mainly there are two kinds of typical application scenarios,
Refer to Fig. 1, for the Organization Chart being connected by ethernet switch between REC with RE, by utilizing ether
The high available of network interface (such as FE/GE/10GE etc.), it is achieved low cost local in-door covering is disposed,
Referring to Fig. 2, concentrate the Organization Chart placed for REC, wherein, R is the transmission in carrying transmission network
Equipment, in fig. 2, REC is put together at REC and concentrates rest area, and RE is real by carrying transmission network
Now distance zooms out, and concentrates placement can significantly reduce wireless construction and maintenance cost, and REC by REC
And transmit data between RE to be carried by transmission network, it is also possible to reduce transmission channel and lay cost.
Base station packetizing transmission is explained below by carrying transmission network or ethernet switched network number
During according to transmission, it is achieved the method for time synchronized of eating dishes without rice or wine.
Refer to Fig. 3, for the embodiment of embodiment of the present invention hollow interface time synchronization method, including:
301, RE receives the Frame that REC sends, and carries temporal information in Frame；
In embodiments of the present invention, RE will receive the Frame that REC sends, when carrying in this Frame
Between information.
302, the data carried in Frame are sent according to temporal information.
In embodiments of the present invention, RE carries sending in this Frame according to the temporal information in Frame
Data, particularly as follows: RE determines according to the information carried in Frame sends in Frame the data carried
The transmission time, and send, when this transmission time arrives, the data carried in this Frame, it is achieved RE side
Time synchronized of eating dishes without rice or wine.
In embodiments of the present invention, by carrying temporal information in a data frame so that receive Frame
RE can send in Frame, according to this temporal information, the data carried, effectively realize eating dishes without rice or wine of RE side
Time synchronized.
In embodiments of the present invention, if temporal information is relative time, then this temporal information can be to send
The time point of the data carried in Frame, relative to the delay time parameter of signal lock in time, refers to
Fig. 4, in the embodiment of the present invention, carries in the temporal information carried in Frame is transmission Frame
When the time point of data is relative to the delay time parameter of signal lock in time, the method for time synchronized of eating dishes without rice or wine
Embodiment, including:
401, RE receives the Frame that REC sends, and comprises and send the number carried in Frame in Frame
According to time point relative to the delay time parameter of signal lock in time；
In embodiments of the present invention, RE receive REC send Frame, this Frame carries time
Between information be time point the prolonging relative to signal lock in time that RE side sends in Frame the data carried
Time parameter late, wherein, lock in time, signal can be by global positioning system (Global Positioning
System, GPS), or Beidou satellite navigation system obtain 1pps or 10ms or the synchronization of 1ms
Signal.
402, when receiving signal lock in time, according to what delay time parameter transmission Frame carried
Data.
In embodiments of the present invention, if the temporal information that RE obtains is to send the data carried in Frame
Time point is relative to the delay time parameter of signal lock in time, then when receiving signal lock in time,
RE sends the data carried in Frame according to this delay time parameter.
It should be noted that in embodiments of the present invention, if Frame is grouped data based on radio frames
Bag, then the delay time parameter in temporal information includes radio frame number, subframe numbers, grouped data packet number,
Below by the concrete time synchronized of eating dishes without rice or wine introduced when RE side sends packet data package based on radio frames
Method, refers to Fig. 5, in the embodiment of the present invention, and the embodiment of time synchronized of eating dishes without rice or wine, including:
501, RE receives the packet data package based on radio frames that REC sends, and takes in this packet data package
Band sends the time point of the data in this packet data package joined relative to the time delay of time synchronizing signal
Number, delay time parameter includes radio frame number, subframe numbers, grouped data packet number；
In embodiments of the present invention, REC when being carried to be transmitted in radio frames by packet data package,
The radio frame number at packet data package place, subframe numbers and grouped data packet number can be obtained.
In embodiments of the present invention, a length of 10ms of a radio frames, a radio frames comprises 10
Subframe, a length of 1ms of each subframe, and data can be carried in subframe and be transmitted, wherein, and one
At least one packet data package can be carried in individual subframe, if carrying at least 2 packet data package in subframe,
Then the length of the packet data package in this subframe can be identical, it is also possible to different.
In embodiments of the present invention, each packet data package in subframe is all carried the time parameter of correspondence,
And time parameter is placed in the data segment of packet data package.In order to be better understood from, with medium access control
System (Media Access Control) frame format illustrates, and refers to following table, in the embodiment of the present invention
Mac frame form.
The structure of mac frame comprises standing part and self-defined part, fixed part in embodiments of the present invention
Divide the standard agreement using Ethernet, including: lead code, frame first symbol, MAC destination address, MAC
The fields such as source address, length and verification, self-defined part then includes data segment field, in data segment field
The self-defined mode of interior employing, including the delivery time point for determining packet data package relative to time synchronized
The delay time parameter of signal and effectively payload data section, wherein, effective payload data section refer to REC with
The valid data of transmission between RE, delay time parameter includes radio frame number, subframe numbers, packet data package
Numbering.
In embodiments of the present invention, RE can receive the packet data package based on radio frames that REC sends,
The temporal information carried in this packet can be to send the time point of the data carried in this packet data package
Relative to the delay time parameter of time synchronizing signal, this delay time parameter includes radio frame number, subframe
Number and grouped data packet number.
502, radio frame number, subframe numbers, grouped data packet number, the length of preset packet data package are utilized
When degree determines the time point sending in packet data package the data carried relative to the delay of signal lock in time
Between；
In embodiments of the present invention, the delay time parameter in packet data package can comprise this grouped data
Bag the radio frame number at place, subframe numbers, grouped data packet number, then RE utilize radio frame number, subframe numbers,
The length of grouped data packet number and preset packet data package determines to send in this packet data package carries
Time point refers to relative to the time delay of signal lock in time, the length of the most preset packet data package
The length of each packet data package of RE side and REC side agreement.
In embodiments of the present invention, according to the radio frame number at packet data package place, subframe numbers, packet count
Determine that the time point sending the data carried in packet data package is relative to time synchronizing signal according to packet number
The mode of time delay is:
Wherein, T (n) is that the time point sending the data carried in packet data package n is believed relative to time synchronized
Number time delay, N_rf is the radio frame number of packet data package n, and N_sub is packet data package n
Subframe numbers, L_PACKET (i) is the preset length of the packet data package of numbered i, and Ts is each data
Eat dishes without rice or wine the time delay sent.
503, when receiving signal lock in time, according to sending time delay, packet data package is carried
Data.
In embodiments of the present invention, RE is calculated and sends the data carried in packet data package relative to same
After the time delay of step time signal, when receiving signal lock in time, then according to calculated
Send the data carried in packet data package time delay, such as, if being calculated time delay
0.5ms, then postpone 0.5ms after receiving time synchronizing signal and send corresponding packet data package.
It should be noted that in embodiments of the present invention, if being carried in radio frames by packet data package
Row transmission, REC Yu RE can use CPRI interface or OBSAI interface.
In embodiments of the present invention, if the Frame received is packet data package based on radio frames, and
Temporal information is the delay time parameter relative to signal lock in time, and delay time parameter includes wireless
Frame number, subframe numbers, grouped data packet number, then according to this radio frame number, subframe numbers, packet data package
The length of numbering and preset packet data package determines the time delay sending this packet data package, is receiving
After time synchronizing signal, send corresponding packet data package according to this time delay, it is achieved RE eats dishes without rice or wine
Time synchronized.
It should be noted that in embodiments of the present invention, delay time parameter can also be time value, i.e.
In REC side, REC utilizes the computing formula in step 502 to obtain in RE transmission packet data package and carries
The time point of data relative to time delay of time synchronizing signal, using this time delay as time value
Carry and be sent to RE in a data frame, or REC utilizes the mode of system intialization to determine time delay,
This time delay is carried as time value in packet data package, is sent to RE so that RE is receiving
After lock in time signal, will send, according to this time value, the data carried in Frame.
In embodiments of the present invention, if the Frame that RE receives is packet data package based on CPRI frame,
And the temporal information carried in packet data package is that to send the time point of the data in this packet data package relative
In the delay time parameter of time synchronizing signal, this delay time parameter includes: CPRI frame number, Hyper Frame Number
And grouped data packet number, to introduce the Frame that RE receives be based on CPRI frame by detailed below
The method of the time synchronized of eating dishes without rice or wine during packet data package, refers to Fig. 6, including:
601, RE receives the packet data package based on CPRI frame that REC sends, in this packet data package
The time point carrying the data sent in this packet data package was joined relative to the time delay of time synchronizing signal
Number, delay time parameter includes CPRI frame number, Hyper Frame Number, grouped data packet number；
In embodiments of the present invention, a length of 10ms of a CPRI frame, and comprise 150 superframes,
Hyper Frame Number is 0-149, a length of 66.67us of a superframe, and comprises 256 basic frames.Need
Bright, in embodiments of the present invention, the CPRI frame in CPRI agreement needs to protect with time synchronizing signal
Hold fixing relation, can be alignment relation, while receiving time synchronizing signal, i.e. send superframe 0,
Can also there is droop duration, wherein, during droop, a length of CPRI frame is believed relative to time synchronized
Number the droop time, i.e. after receiving time synchronizing signal, postpone this droop duration and send out again
Send superframe 0.
In embodiments of the present invention, REC can by Deta bearer on CPRI frame, and carrying data it
After, the superframe in CPRI frame is divided into the packet data package of several arbitrary sizes, and after dividing
Packet data package is sent to RE, and therefore, RE will receive the packet count based on CPRI frame that REC sends
According to bag, this packet data package is carried the time point of the data sent in this packet data package relative to the time
The delay time parameter of synchronizing signal, delay time parameter includes CPRI frame, Hyper Frame Number, packet data package
Numbering.
602, recover CPRI frame according to grouped data packet number, CPRI frame comprises superframe；
In embodiments of the present invention, the packet data package based on CPRI frame received is recovered by RE,
I.e. carry out arrangement according to grouped data packet number and revert to CPRI frame.
603, utilize CPRI frame number and Hyper Frame Number, preset droop duration to determine in transmission superframe to take
The time point of the data of band is relative to the time delay of time synchronizing signal, and preset droop duration is
Refer to that the transmission time point of the data carried in the superframe that CPRI frame number is 0 and Hyper Frame Number is 0 is relative to the time
The fixed delay time of synchronizing signal；
In embodiments of the present invention, RE, will be with CPRI after packet data package is reverted to CPRI frame
The superframe of frame is that unit sends in superframe the data carried, and i.e. utilizes CPRI frame number, Hyper Frame Number and preset
Droop duration determines time point the prolonging relative to time synchronizing signal sending the data carried in superframe
The late time, wherein, preset fixing deviation duration refer to CPRI frame number be 0 and Hyper Frame Number be 0 super
The transmission time point of the data carried in frame is relative to the fixed delay time of time synchronizing signal.
In the embodiment of the present invention, RE utilizes CPRI frame number and Hyper Frame Number, preset droop duration true
Surely the time point sending the data carried in superframe can relative to the mode of the time delay of time synchronizing signal
To be:
T (m)=TCPRI×NCPRI+Tsuper×m+Tg
Wherein, T (m) is that the time point of the data carried in the superframe of m is relative to the time for sending Hyper Frame Number
The time delay of synchronizing signal, TCPRIFor the unit time of CPRI frame, NCPRICPRI frame for superframe m
Number, TsuperFor the unit time of superframe, TgFor preset droop duration.
604, when receiving signal lock in time, the number carried in described superframe is sent according to time delay
According to.
In embodiments of the present invention, RE is calculated and sends the data carried in superframe relative to lock in time
After the time delay of signal, when receiving signal lock in time, then time according to calculated delay
Between send the data carried in corresponding superframe, such as, if calculated time delay is 0.5ms, then exist
Postpone 0.5ms after receiving time synchronizing signal and send the data carried in corresponding superframe.
In embodiments of the present invention, by CPRI frame will be reverted to based on the packet data package in CPRI frame,
And utilize CPRI frame number, Hyper Frame Number to determine the time delay sending corresponding superframe, then when receiving synchronization
Between after signal, send corresponding superframe according to this time delay, it is achieved the time synchronized of eating dishes without rice or wine of RE.
It should be noted that in embodiments of the present invention, temporal information can also is that absolute time, please join
Read Fig. 7, in the embodiment of the present invention, during for Frame carries absolute time, the side of time synchronized of eating dishes without rice or wine
The embodiment of method, including:
701, RE receives the Frame that REC sends, and carries absolute time in Frame；
In embodiments of the present invention, REC, when sending Frame to RE, can carry RE in a data frame
Send the absolute time of the data carried in this Frame.
It should be noted that in embodiments of the present invention, REC and RE uses the Timing Synchronization system of homology
System, is provided absolute time by this timing synchronization sytem.
702, the data carried in Frame are sent according to absolute time.
In embodiments of the present invention, if carry in Frame is the absolute time of data transmission, then RE presses
The data carried are sent in Frame according to this absolute time, such as, if the absolute time carried in Frame
Be 20: 28: 45 on the 16th May in 2012, then RE was 16 days 20: 28 May in 2012
Divide and send the data carried in this Frame in 45 seconds.
In embodiments of the present invention, by carrying absolute time in a data frame so that receive Frame
RE can send in Frame, according to this absolute time, the data carried, effectively realize eating dishes without rice or wine of RE side
Time synchronized.
Fig. 3 is all the method for the time synchronized of eating dishes without rice or wine described from RE side to embodiment illustrated in fig. 7, below will
The method describing time synchronized of eating dishes without rice or wine from REC side, refers to Fig. 8, in the embodiment of the present invention, eats dishes without rice or wine
Another embodiment of the method for time synchronized, including:
801, REC determines that RE sends the temporal information of the data carried in Frame；
In embodiments of the present invention, REC will determine the temporal information of Frame, and basis is received by RE
The temporal information carried in Frame determines the time of the data sent in this Frame.
In embodiments of the present invention, the temporal information that REC determines can be absolute time, such as 2012
17: 48: 36 on the 17th May, it is also possible to be the time point of the data carried in RE transmission Frame
Relative to the delay time parameter of time synchronizing signal, wherein, delay time parameter can be time value,
Such as, the temporal information in Frame is to be 0.5ms relative to the time delay of time synchronizing signal, then
RE sends this Frame after postponing 0.5ms after receiving time synchronizing signal, if additionally, Frame is
Packet data package based on radio frames, then delay time parameter can be radio frame number, subframe numbers, packet
Package number, RE side is according to the radio frame number in packet data package, subframe numbers, grouped data packet number
Can determine that time delay, specifically refer to embodiment illustrated in fig. 5；If Frame is based on CPRI frame point
Group packet, then delay time parameter includes: CPRI frame number, Hyper Frame Number, grouped data packet number, RE
According to the CPRI frame number in packet data package, Hyper Frame Number, grouped data packet number, side determines that transmission recovers after
Superframe in time delay of data, specifically refer to embodiment illustrated in fig. 6.
802, temporal information is carried it is sent to RE in a data frame.
In embodiments of the present invention, the temporal information determined is saved in the Frame of correspondence by REC, and
Frame is sent to RE.
In embodiments of the present invention, REC is by carrying in a data frame by temporal information, by this Frame
Be sent to RE so that RE according to the temporal information carried in Frame determine Frame the transmission time or
Person sends time point time delay relative to time synchronizing signal, effectively realize time of eating dishes without rice or wine of RE side with
Step.
Refer to Fig. 9, for the embodiment of the wireless device in the embodiment of the present invention, including:
Receive unit 901, for receiving the Frame that radio equipment controller REC sends, described data
Frame carries temporal information；
Processing unit 902, for sending the data carried in described Frame according to described temporal information.
In embodiments of the present invention, receive unit 901 and receive the Frame that REC sends, in this Frame
Carry temporal information, then, processing unit 902 send the number carried in Frame according to temporal information
According to.
In embodiments of the present invention, by carrying temporal information in a data frame so that receive Frame
RE can send in Frame, according to temporal information, the data carried so that sending out of the Frame of RE side
Send and all can carry out according to the temporal information in Frame, it is possible to the time of eating dishes without rice or wine effectively realizing RE side is same
Step.
For the wireless device being better understood from the embodiment of the present invention, refer to Figure 10, real for the present invention
Execute another embodiment of wireless device in example, including:
Reception unit 901 as shown in Figure 9, processing unit 902, and with embodiment illustrated in fig. 9 described in
Content similar, here is omitted.
In embodiments of the present invention, if temporal information is the absolute time sending the data carried in Frame,
The most described processing unit 902 then for sending the data carried in Frame according to absolute time.
In embodiments of the present invention, if temporal information is the time point phase sending the data carried in Frame
For the delay time parameter of signal lock in time, then processing unit 902 is for when receiving described synchronization
During time signal, send the data carried in Frame by delay time parameter.And if this time delay of ginseng
Number is time value, and the most described processing unit 902, for when receiving signal lock in time, is temporally worth
Send the data carried in Frame.Wherein, signal lock in time can be to pass through global positioning system
(Global Positioning System, GPS), or Beidou satellite navigation system obtain 1pps or
The synchronizing signal of 10ms or 1ms.
In embodiments of the present invention, if Frame is packet data package based on radio frames, time delay joins
Number includes radio frame number, subframe numbers, grouped data packet number, then processing unit 902 includes:
Computing unit 1001, is used for utilizing described radio frame number, subframe numbers, grouped data packet number, in advance
The length of the packet data package put determines that the time point sending the data carried in described packet data package is relative
Time delay in signal lock in time；
Transmitting element 1002, for when receiving described signal lock in time, according to described time delay
Send the data carried in described packet data package.
Concrete, computing unit 1001 is according to the radio frame number at packet data package place, subframe numbers, packet
Package number determines that the time point sending the data carried in packet data package is relative to time synchronizing signal
The mode of time delay be:
Wherein, T (n) is that the time point sending the data carried in packet data package n is believed relative to time synchronized
Number time delay, N_rf is the radio frame number of packet data package n, and N_sub is packet data package n
Subframe numbers, L_PACKET (i) is the preset length of the packet data package of numbered i, and Ts is each data
Eat dishes without rice or wine the time delay sent.
It should be noted that in embodiments of the present invention, a length of 10ms of a radio frames, a nothing
Line frame comprises 10 subframes, a length of 1ms of each subframe, and data can be carried in subframe and pass
Defeated, wherein, a subframe can carry at least one packet data package, if carrying at least 2 in subframe
Packet data package, then the length of the packet data package in this subframe can be identical, it is also possible to different.
In embodiments of the present invention, if the Frame that RE receives is packet data package based on CPRI frame,
Then delay time parameter includes CPRI frame number and Hyper Frame Number, grouped data packet number；
Described processing unit 902 includes:
Recovery unit 1003, recovers described CPRI frame, institute for the numbering according to described packet data package
State in CPRI frame and comprise superframe；
Time calculating unit 1004, for utilizing described CPRI frame number and Hyper Frame Number, preset fixing partially
Difference duration determines that the time point sending the data carried in described superframe is relative to the delay of time synchronizing signal
Time, described preset droop duration refers to take in the superframe that CPRI frame number is 0 and Hyper Frame Number is 0
The transmission time point of the data of band is relative to the fixed delay time of time synchronizing signal；
Superframe transmitting element 1005, for when receiving described signal lock in time, according to described delay
Time sends the data carried in described superframe.
Concrete, time calculating unit 1004 utilizes CPRI frame number and Hyper Frame Number, preset droop
Duration determines the time point sending in superframe the data carried time delay relative to time synchronizing signal
Mode may is that
T (m)=TCPRI×NCPRI+Tsuper×m+Tg
Wherein, T (m) is that the time point of the data carried in the superframe of m is relative to the time for sending Hyper Frame Number
The time delay of synchronizing signal, TCPRIFor the unit time of CPRI frame, NCPRICPRI frame for superframe m
Number, TsuperFor the unit time of superframe, TgFor preset droop duration.
It should be noted that in embodiments of the present invention, a length of 10ms of a CPRI frame, and bag
Containing 150 superframes, Hyper Frame Number is 0-149, a length of 66.67us of a superframe, and comprises 256
Basic frame.It should be noted that in embodiments of the present invention, the CPRI frame in CPRI agreement need with
Time synchronizing signal keeps fixing relation, can be alignment relation, i.e. receive time synchronizing signal
While send superframe 0, it is also possible to there is droop duration, wherein, a length of CPRI during droop
Frame is relative to the droop time of time synchronizing signal, i.e. after receiving time synchronizing signal, postpones
This droop duration retransmits superframe 0.
In embodiments of the present invention, REC can by Deta bearer on CPRI frame, and carrying data it
After, the superframe in CPRI frame is divided into the packet data package of several arbitrary sizes, and after dividing
Packet data package is sent to RE, and therefore, RE will receive the packet count based on CPRI frame that REC sends
According to bag, this packet data package is carried the time point of the data sent in this packet data package relative to the time
The delay time parameter of synchronizing signal, delay time parameter includes CPRI frame, Hyper Frame Number, packet data package
Numbering.
In embodiments of the present invention, the unit 901 that receives of wireless device will receive the Frame that REC sends,
And sent the data carried in this Frame according to the temporal information in this Frame by processing unit 902,
If particularly as follows: temporal information is the absolute time sending the data carried in Frame, then processing unit 902
The data carried in Frame are sent according to this absolute time；If temporal information is carried for sending in Frame
The time point of data relative to the delay time parameter of signal lock in time, and if this delay time parameter
For time value, then, when receiving signal lock in time, processing unit 902 sends number according to this time value
According to the data carried in frame；If temporal information be the time point sending in Frame the data carried relative to
Lock in time signal delay time parameter, and Frame is packet data package based on radio frames, postpones
Time parameter includes radio frame number, subframe numbers, grouped data packet number, the then meter in processing unit 902
Calculate unit 1001 and will utilize radio frame number, subframe numbers, grouped data packet number, preset packet data package
Length determine that the time point sending in this packet data package the data carried is relative to signal lock in time
Time delay；And when receiving described signal lock in time, by transmitting element 1002 according to this delay
Time sends the data carried in packet data package；If temporal information is to send the data carried in Frame
Time point relative to the delay time parameter of signal lock in time, and the Frame that receives of RE for based on
The packet data package of CPRI frame, delay time parameter includes CPRI frame number and Hyper Frame Number, packet data package
Numbering, then the numbering according to packet data package is recovered CPRI by the recovery unit 1003 in processing unit 902
Frame, comprises superframe in CPRI frame；Then, time calculating unit 1004 utilize CPRI frame number and Hyper Frame Number,
Preset droop duration determines that the time point sending the data carried in superframe is believed relative to time synchronized
Number time delay, when receiving described signal lock in time, by superframe transmitting element 1005 according to prolonging
Time sends the data carried in superframe late.
In embodiments of the present invention, by carrying temporal information in a data frame so that receive Frame
RE can send in Frame, according to this temporal information, the data carried, effectively realize eating dishes without rice or wine of RE side
Time synchronized.
Refer to Figure 11, in the embodiment of the present invention, the embodiment of radio equipment controller, including:
Determine unit 1101, for determining that wireless device RE sends the time of the data carried in Frame
Information；
Transmitting element 1102, for described temporal information carried be sent in described Frame described
RE。
It should be noted that in embodiments of the present invention, temporal information is absolute time, or when sending
Between put the delay time parameter relative to time synchronized time signal；
Wherein, delay time parameter is time value, or, if Frame is packet count based on radio frames
According to bag, then delay time parameter includes radio frame number, subframe numbers, grouped data packet number, or, if
Frame is packet data package based on CPRI frame, then delay time parameter includes: CPRI frame number, super
Frame number, grouped data packet number.
In embodiments of the present invention, radio equipment controller cell 1101 really will determine that RE sends number
According to the temporal information of the data carried in frame, and by transmitting element 1102, this temporal information is carried in data
Frame is sent to RE.
In embodiments of the present invention, REC is by placing temporal information in a data frame, and by Frame
It is sent to RE so that RE can determine the data in Frame according to the temporal information carried in Frame
The transmission time, and by this transmission time send Frame, it is achieved the time synchronized of eating dishes without rice or wine of RE side.
Refer to Figure 12, for the embodiment of clock synchronization system of eating dishes without rice or wine in the embodiment of the present invention, including:
Radio equipment controller 1201 as shown in Figure 10, and at least one nothing as illustrated in fig. 9 or 10
Line equipment 1202.
One of ordinary skill in the art will appreciate that all or part of step realizing in above-described embodiment method
The program that can be by completes to instruct relevant hardware, and described program can be stored in a kind of computer
In readable storage medium storing program for executing, storage medium mentioned above can be read only memory, disk or CD etc..
Above to the method and system of a kind of time synchronized of eating dishes without rice or wine provided by the present invention, wireless device, nothing
Line device controller is described in detail, for one of ordinary skill in the art, real according to the present invention
Execute the thought of example, the most all will change, in sum, this
Description should not be construed as limitation of the present invention.
Claims (9)
1. the method for a time synchronized of eating dishes without rice or wine, it is characterised in that including:
Wireless device RE receives the Frame that radio equipment controller REC sends, and takes in described Frame
Band temporal information；
The data carried in described Frame are sent according to described temporal information；
Wherein, described temporal information is that the time point sending the data carried in described Frame is relative to same
The delay time parameter of step time signal；
The most described send in described Frame, according to described temporal information, the data carried and include:
When receiving described signal lock in time, send described Frame according to described delay time parameter
In the data carried；
If described Frame is packet data package based on radio frames, the most described delay time parameter includes nothing
Line frame number, subframe numbers, grouped data packet number；
Then described when receiving described signal lock in time, send described according to described delay time parameter
The data carried in Frame include:
Utilize described radio frame number, subframe numbers, grouped data packet number, the length of preset packet data package
Degree determines time point the prolonging relative to signal lock in time sending the data carried in described packet data package
Time late；
When receiving described signal lock in time, send described packet data package n according to described time delay
In the data carried.
Method the most according to claim 1, it is characterised in that described utilize described radio frame number,
Subframe numbers, grouped data packet number, the length of preset packet data package determine the described grouped data of transmission
The time point of the data carried in bag relative to the mode of the time delay of signal lock in time is:
Wherein, T (n) is that the time point sending the data carried in packet data package n is believed relative to time synchronized
Number time delay, N_rf is the radio frame number of packet data package n, and N_sub is packet data package n
Subframe numbers, L_PACKET (i) is the preset length of the packet data package of numbered i, and Ts is each data
Eat dishes without rice or wine the time delay sent.
3. the method for a time synchronized of eating dishes without rice or wine, it is characterised in that including:
Wireless device RE receives the Frame that radio equipment controller REC sends, and takes in described Frame
Band temporal information；
The data carried in described Frame are sent according to described temporal information；
Wherein, described temporal information is that the time point sending the data carried in described Frame is relative to same
The delay time parameter of step time signal；
The most described send in described Frame, according to described temporal information, the data carried and include:
When receiving described signal lock in time, send described Frame according to described delay time parameter
In the data carried；
Described Frame is packet data package based on common public radio interface CPRI frame, during described delay
Between parameter include CPRI frame number, Hyper Frame Number and grouped data packet number；
Then when receiving described signal lock in time, described according to the transmission of described delay time parameter
The data carried in Frame include:
Recover described CPRI frame according to described grouped data packet number, described CPRI frame comprises superframe；
Described CPRI frame number and Hyper Frame Number, preset droop duration is utilized to determine in the described superframe of transmission
The time point of the data carried relative to the time delay of time synchronizing signal, described preset droop
Duration refers to that the transmission time point of data carried in the superframe that CPRI frame number is 0 and Hyper Frame Number is 0 is relative
Fixed delay time in time synchronizing signal；
When receiving described signal lock in time, carry according to sending in described superframe described time delay
Data.
Method the most according to claim 3, it is characterised in that described utilize described CPRI frame number
And Hyper Frame Number, preset droop duration determine the time point phase sending the data carried in described superframe
Mode for the time delay of time synchronizing signal is:
T (m)=TCPRI×NCPRI+Tsuper×m+Tg
Wherein, T (m) is that the time point of the data carried in the superframe of m is relative to the time for sending Hyper Frame Number
The time delay of synchronizing signal, TCPRIFor the unit time of CPRI frame, NCPRICPRI frame for superframe m
Number, TsuperFor the unit time of superframe, TgFor preset droop duration.
5. the method for a time synchronized of eating dishes without rice or wine, it is characterised in that including:
Wireless controller REC determines that wireless device RE sends the temporal information of the data carried in Frame；
Described temporal information is carried in described Frame, is sent to described RE；
Described temporal information is the delay time parameter sending time point relative to time synchronized time signal；
If described Frame is packet data package based on radio frames, the most described delay time parameter includes nothing
Line frame number, subframe numbers, grouped data packet number, or, if described Frame is based on CPRI frame point
Group packet, the most described delay time parameter includes: CPRI frame number, Hyper Frame Number, grouped data packet number.
6. a wireless device RE, it is characterised in that including:
Receive unit, for receiving the Frame that radio equipment controller REC sends, in described Frame
Carry temporal information；
Processing unit, for sending the data carried in described Frame according to described temporal information；
Wherein, if described temporal information be the time point sending in described Frame the data carried relative to
Lock in time signal delay time parameter, the most described processing unit is for when receiving described lock in time
During signal, send the data carried in described Frame by described delay time parameter；
Described Frame is packet data package based on radio frames, and described delay time parameter includes radio frames
Number, subframe numbers, grouped data packet number；
The most described processing unit includes:
Computing unit, is used for utilizing described radio frame number, subframe numbers, grouped data packet number, preset
The length of packet data package determines that the time point sending the data carried in described packet data package is relative to same
The time delay of step time signal；
Transmitting element, for when receiving described signal lock in time, sends according to described time delay
The data carried in described packet data package.
7. a wireless device RE, it is characterised in that including:
Receive unit, for receiving the Frame that radio equipment controller REC sends, in described Frame
Carry temporal information；
Processing unit, for sending the data carried in described Frame according to described temporal information；
Wherein, if described temporal information be the time point sending in described Frame the data carried relative to
Lock in time signal delay time parameter, the most described processing unit is for when receiving described lock in time
During signal, send the data carried in described Frame by described delay time parameter；
Described Frame is packet data package based on CPRI frame, and the most described delay time parameter includes CPRI
Frame number and Hyper Frame Number, grouped data packet number；
Described processing unit includes:
Recovery unit, recovers described CPRI frame, described CPRI for the numbering according to described packet data package
Frame comprises superframe；
Time calculating unit, for utilizing described CPRI frame number and Hyper Frame Number, preset droop duration
Determine the time point time delay relative to time synchronizing signal of the data carried in the described superframe of transmission,
Described preset droop duration refers to the number carried in the superframe that CPRI frame number is 0 and Hyper Frame Number is 0
According to send time point relative to the fixed delay time of time synchronizing signal；
Superframe transmitting element, for when receiving described signal lock in time, according to described time delay
Send the data carried in described superframe.
8. a wireless control apparatus, it is characterised in that including:
Determine unit, for determining that wireless device RE sends the temporal information of the data carried in Frame；
Transmitting element, is sent to described RE for described temporal information being carried in described Frame；
Described temporal information is the delay time parameter sending time point relative to time synchronized time signal；
If described Frame is packet data package based on radio frames, the most described delay time parameter includes radio frames
Number, subframe numbers, grouped data packet number, or, if described Frame is packet count based on CPRI frame
According to bag, the most described delay time parameter includes: CPRI frame number, Hyper Frame Number, grouped data packet number.
9. the system of a time synchronized of eating dishes without rice or wine, it is characterised in that including:
Wireless device as described in any one of claim 6 to 7, and the most wireless
Device controller.
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| CN105284184B (en) * | 2014-05-21 | 2019-06-21 | 华为技术有限公司 | A kind of data transmission method, device and network system |
| CN105451272A (en) * | 2014-09-17 | 2016-03-30 | 中兴通讯股份有限公司 | Data interaction method, building baseband unit, radio remote unit and R-Hub |
| CN105682214B (en) * | 2014-11-21 | 2020-01-24 | 中兴通讯股份有限公司 | Baseband and radio frequency combined time sequence adjusting method and device |
| CN106162860B (en) | 2015-04-27 | 2020-01-03 | 华为技术有限公司 | Time synchronization method and system, and network device |
| CN106416391B (en) * | 2015-05-19 | 2020-03-20 | 华为技术有限公司 | Paging method, user equipment, base station and core network equipment |
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