CN103533630A - Method and system for air interface time synchronization, radio equipment and radio equipment control - Google Patents
Method and system for air interface time synchronization, radio equipment and radio equipment control Download PDFInfo
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Abstract
The embodiment of the invention discloses a method and system for air interface time synchronization, radio equipment (RE) and a radio equipment control (REC), thereby realizing air interface synchronization at an RE side. According to the embodiment of the invention, the method comprises the following steps that: the RE receives a data frame sent by the REC, wherein the data frame carries time information; and according to the time information, data carried by the data frame are sent. Therefore, air interface time synchronization of the RE side can be effectively realized.
Description
Technical field
The present invention relates to communication technical field, relate in particular to eat dishes without rice or wine method for synchronizing time and system, wireless device, radio equipment controller.
Background technology
At present, using in the world two kinds of maximum base band radio frequency interface agreements is common public radio interface (Common Public Radio Interface, CPRI) interface and open base station architecture agreement (Open Base Station Architecture Initiative, OBSAI) interface.CPRI interface and OB SAI interface system adopt time-division data stream transmitting mode, and interface shape can be electricity mouth or light mouth, and the traditional base station system topology forming based on these two kinds of interfaces has hub-and-spoke configuration, chain structure, tree structure, loop configuration etc.
CPRI interface and OBSAI interface have all defined 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) the two-way maximum transmitted time delay of transmission link between, delay variation refers to that between REC and RE, transmission link time-delay is unstable, has drift in the time.Reliability in order to ensure transfer of data, in existing home control network communication protocol, the antenna data transmitting of eating dishes without rice or wine has been defined to the requirement of the time synchronized of eating dishes without rice or wine, the time synchronized of eating dishes without rice or wine refers to that the antenna same number of frames number between internal antenna or station of respectively standing need to eat dishes without rice or wine to align moment point transmitting, between the RE in station or between station, antenna data transmission need to meet synchronous requirement, to guarantee the performance index of home control network communication protocol definition.
Development along with the network communications technology, wireless communication technique is to the direction evolution of more high-performance, the more excellent network planning, as concentrated Long Term Evolution (the Long Time Evolution-Advanced of placement technique, development in wireless base station, LTE-A) technology, indoor universal wireless access system etc., to reduce wireless base station computer room construction, Transmission Fibers laying, realize the centralized maintenance of wireless base station and the indoor covering of local cheaply etc.In prior art, between REC and RE, adopt the transmission method of the point-to-point or point-to-multipoint of CPRI interface or OBSAI interface, by the development of the above-mentioned technology of restriction, therefore, between REC and RE, by ethernet switched network or transmission network carrying, realize packetization transmission and become important technology evolution direction.
Yet, when realizing the transmission of data by ether switching network or carrying transmission network between the RE of REC territory, because equipment on ether switching network or carrying transmission network is numerous, data need to be passed through Multi-stage transmission transfer device from REC to RE, also there is larger difference in the transfer mode of each equipment and processing mode, to cause propagation delay time and delay variation, and make RE processing time of eating dishes without rice or wine asynchronous, can not meet the requirement of the time synchronized of eating dishes without rice or wine of home control network communication protocol.
Summary of the invention
The embodiment of the present invention provides a kind of 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 for synchronizing time of eating dishes without rice or wine in the embodiment of the present invention comprises:
Wireless device RE receives the Frame that radio equipment controller REC sends, and in described Frame, carries temporal information;
According to described temporal information, send the data of carrying in described Frame.
The method for synchronizing time of eating dishes without rice or wine in the embodiment of the present invention comprises:
Wireless controller REC determines that wireless device RE sends the temporal information of the data of carrying in Frame;
Described temporal information is carried at and in described Frame, sends to described RE.
Wireless device in the embodiment of the present invention comprises:
Receiving element, the Frame sending for receiving radio equipment controller REC, carries temporal information in described Frame;
Processing unit, for sending according to described temporal information the data that described Frame carries.
Wireless control apparatus in the embodiment of the present invention comprises:
Determining unit, for determining the temporal information of the data that wireless device RE transmission Frame carries;
Transmitting element, sends to described RE for described temporal information is carried to described Frame.
The clock synchronization system of eating dishes without rice or wine in the embodiment of the present invention comprises:
Wireless device and wireless control apparatus;
Described wireless device comprises: receiving element, and the Frame sending for receiving radio equipment controller REC, carries temporal information in described Frame; Processing unit, for sending according to described temporal information the data that described Frame carries;
Described wireless control apparatus comprises: determining unit, for determining the temporal information of the data that wireless device RE transmission Frame carries; Transmitting element, sends to described RE for described temporal information is carried to described Frame.
As can be seen from the above technical solutions, the embodiment of the present invention has the following advantages:
RE receives the Frame that carries temporal information that REC sends, and determines and send the data of carrying in this Frame according to this temporal information, can 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 and RE in the embodiment of the present invention;
Fig. 2 is that in the embodiment of the present invention, REC concentrates the Organization Chart of placing;
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.
Embodiment
The embodiment of the present invention provides a kind of 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 between RE.
In embodiments of the present invention, CPRI interface and OBSAI interface adopt time-division data stream transmitting mode to transmit data, and packetizing transmission in base station is carried out pack mode transfer of data by carrying transmission network or ether switching network, wherein, the interface shape of base station data packetizing transmission can be Fast Ethernet (the Fast Ethernet of light mouth or electricity mouth, FE) or gigabit Ethernet (Gigabit Ethernet, GE) or ten thousand mbit ethernets (10Gigabit Ethernet, 10GE) etc., mainly contain two kinds of typical application scenarioss, refer to Fig. 1, for the Organization Chart being connected by ethernet switch between REC and RE, by utilizing the high availability of Ethernet interface (as FE/GE/10GE etc.), realizing the indoor covering of low-cost local disposes, refer to Fig. 2, for REC concentrates the Organization Chart of placing, wherein, R is the transmission equipment in carrying transmission network, in Fig. 2, REC concentrates and is placed on the concentrated rest area of REC, RE realizes distance by carrying transmission network and zooms out, by REC, concentrate placement can significantly reduce wireless construction and maintenance cost, and between REC and RE, transmitting data carries by transmission network, also can reduce transmission channel and lay cost.
When introducing the transmission of base station packetizing and carry out transfer of data by carrying transmission network or ethernet switched network, realize the method for the time synchronized of eating dishes without rice or wine below.
Refer to Fig. 3, the embodiment for embodiment of the present invention hollow interface time synchronization method, comprising:
301, RE receives the Frame that REC sends, and carries temporal information in Frame;
In embodiments of the present invention, RE, by receiving the Frame of REC transmission, carries temporal information in this Frame.
302, according to temporal information, send the data of carrying in Frame.
In embodiments of the present invention, RE will send the data of carrying in this Frame according to the temporal information in Frame, be specially: RE determines the transmitting time that sends the data of carrying in Frame according to the information of carrying in Frame, and the data of carrying send this Frame when this transmitting time arrives in, realize the time synchronized of eating dishes without rice or wine of RE side.
In embodiments of the present invention, by carry temporal information in Frame, make the RE that receives Frame to send the data of carrying in Frame according to this temporal information, effectively realize the time synchronized of eating dishes without rice or wine of RE side.
In embodiments of the present invention, if temporal information is relative time, this temporal information can be to send the time point of the data of carrying in Frame with respect to the delay time parameter of signal lock in time, refer to Fig. 4, in the embodiment of the present invention, the temporal information of carrying in Frame for send the time point of the data of carrying in Frame with respect to lock in time signal delay time parameter time, the embodiment of the method for the time synchronized of eating dishes without rice or wine, comprising:
401, RE receives the Frame that REC sends, and comprises and send the time point of the data of carrying in Frame with respect to the delay time parameter of signal lock in time in Frame;
In embodiments of the present invention, RE receives the Frame that REC sends, the temporal information of carrying in this Frame is that RE side sends the time point of the data of carrying in Frame with respect to the delay time parameter of signal lock in time, wherein, lock in time, signal can be by global positioning system (Global Positioning System, or the 1pps that obtains of Beidou satellite navigation system or the synchronizing signal of 10ms or 1ms GPS).
402,, when receiving lock in time during signal, according to delay time parameter, send the data of carrying in Frame.
In embodiments of the present invention, if the temporal information that RE obtains is to send the time point of the data of carrying in Frame with respect to the delay time parameter of signal lock in time,, when receiving lock in time during signal, RE sends the data of carrying in Frame according to this delay time parameter.
It should be noted that, in embodiments of the present invention, if Frame is the packet data package based on radio frames, the delay time parameter in temporal information comprises radio frame number, and subframe numbers, grouped data packet number, below by the method for the concrete time synchronized of eating dishes without rice or wine when introducing RE side and sending the packet data package based on radio frames, refer to Fig. 5, in the embodiment of the present invention, the embodiment of the time synchronized of eating dishes without rice or wine, comprising:
501, RE receives the packet data package based on radio frames that REC sends, in this packet data package, carry and send the time point of the data in this packet data package with respect to the delay time parameter of time synchronizing signal, delay time parameter comprises radio frame number, subframe numbers, grouped data packet number;
In embodiments of the present invention, REC is being carried to packet data package while transmitting in radio frames, can obtain radio frame number, subframe numbers and the grouped data packet number at packet data package place.
In embodiments of the present invention, the length of a radio frames is 10ms, a radio frames comprises 10 subframes, the length of each subframe is 1ms, and data can be carried in subframe and transmit, wherein, in a subframe, can carry at least one packet data package, if at least 2 packet data package of carrying in subframe, the length of the packet data package in this subframe can be identical, also can be different.
In embodiments of the present invention, in each packet data package in subframe, all carry corresponding time parameter, and time parameter is placed in the data segment of packet data package.For better understanding, with medium access control (Media Access Control) frame format, describe, refer to following table, be mac frame form in the embodiment of the present invention.
In the structure of mac frame, comprise in embodiments of the present invention standing part and self-defined part, standing part adopts the standard agreement of Ethernet, comprise: lead code, frame first symbol, MAC destination address, mac source address, the field such as length and verification, self-defined part comprises data segment field, in data segment field, adopt self-defined mode, comprise for determining that the delivery time point of packet data package is with respect to the delay time parameter of time synchronizing signal and effective payload data section, wherein, effectively payload data section refers to the valid data that transmit between the RE of REC territory, delay time parameter comprises radio frame number, subframe numbers, grouped data packet number.
In embodiments of the present invention, RE can receive the packet data package based on radio frames that REC sends, the temporal information of carrying in this packet can be to send the time point of the data of carrying in this packet data package with respect to the delay time parameter of time synchronizing signal, and this delay time parameter comprises radio frame number, subframe numbers and grouped data packet number.
502, utilize radio frame number, subframe numbers, grouped data packet number, the length of preset packet data package determines that the time point of the data of carrying in transmission packet data package is with respect to the time of delay of signal lock in time;
In embodiments of the present invention, delay time parameter in packet data package can comprise radio frame number, subframe numbers, the grouped data packet number at this packet data package place, RE utilizes the length of radio frame number, subframe numbers, grouped data packet number and preset packet data package to determine to send the time point that carries in this packet data package with respect to the time of delay of signal lock in time, and wherein the length of preset packet data package refers to 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, grouped data packet number, determine that the time point that sends the data of carrying in packet data package with respect to the mode of the time of delay of time synchronizing signal is:
Wherein, T (n) is for sending the time point of the data of carrying in packet data package n with respect to the time of delay of time synchronizing signal, N_rf is the radio frame number of packet data package n, N_sub is the subframe numbers of packet data package n, L_PACKET (i) is for being numbered the preset length of packet data package of i, and Ts eats dishes without rice or wine time of delay of transmission for each data.
503, when receiving lock in time during signal, according to sending the data of carrying in packet data package time of delay.
In embodiments of the present invention, RE calculates and sends the data of carrying in packet data package after the time of delay with respect to signal lock in time, when receiving lock in time during signal, according to sending the data of carrying in packet data package the time of delay calculating, for example, if be 0.5ms the time of delay calculating, after receiving time synchronizing signal, postpone 0.5ms and send corresponding packet data package.
It should be noted that, in embodiments of the present invention, if packet data package is carried in radio frames and is transmitted, REC and RE can be used CPRI interface or OBSAI interface.
In embodiments of the present invention, if the Frame receiving is the packet data package based on radio frames, and temporal information is the delay time parameter with respect to signal lock in time, and delay time parameter comprises radio frame number, subframe numbers, grouped data packet number, according to the length of this radio frame number, subframe numbers, grouped data packet number and preset packet data package, determine the time of delay that sends this packet data package, after receiving time synchronizing signal, according to sending corresponding packet data package this time of delay, realize the time synchronized of eating dishes without rice or wine of RE.
It should be noted that, in embodiments of the present invention, delay time parameter can also be time value, in REC side, REC utilizes the computing formula in step 502 to obtain RE and sends the time point of the data of carrying in packet data package with respect to the time of delay of time synchronizing signal, using this time of delay as time value, be carried at and in Frame, send to RE, or REC utilizes the mode of system intialization to determine time of delay, using this time of delay as time value, be carried at and in packet data package, send to RE, make RE after receiving signal lock in time, the data of carrying in Frame will be sent according to this time value.
In embodiments of the present invention, if the Frame that RE receives is the packet data package based on CPRI frame, and the temporal information of carrying in packet data package is for sending the time point of the data in this packet data package with respect to the delay time parameter of time synchronizing signal, this delay time parameter comprises: CPRI frame number, Hyper Frame Number and grouped data packet number, below by the method for the detailed time synchronized of eating dishes without rice or wine while introducing Frame that RE receives for packet data package based on CPRI frame, refer to Fig. 6, comprising:
601, RE receives the packet data package based on CPRI frame that REC sends, in this packet data package, carry and send the time point of the data in this packet data package with respect to the delay time parameter of time synchronizing signal, delay time parameter comprises CPRI frame number, Hyper Frame Number, grouped data packet number;
In embodiments of the present invention, the length of a CPRI frame is 10ms, and comprises 150 superframes, and Hyper Frame Number is 0-149, and the length of a superframe is 66.67us, and comprises 256 basic frames.It should be noted that, in embodiments of the present invention, CPRI frame in CPRI agreement need to keep fixing relation with time synchronizing signal, can be alignment relation, when receiving time synchronizing signal, send superframe 0, also can have droop duration, wherein, droop duration be CPRI frame with respect to the droop time of time synchronizing signal,, after receiving time synchronizing signal, postpone this droop duration and send again superframe 0.
In embodiments of the present invention, REC can be by Deta bearer on CPRI frame, and after carrying data, superframe in CPRI frame is divided into the packet data package of several arbitrary sizes, and the packet data package after dividing is sent to RE, therefore, RE will receive the packet data package based on CPRI frame of REC transmission, in this packet data package, carry and send the time point of the data in this packet data package with respect to the delay time parameter of time synchronizing signal, delay time parameter comprises CPRI frame, Hyper Frame Number, grouped data packet number.
602, according to grouped data packet number, recover CPRI frame, in CPRI frame, comprise superframe;
In embodiments of the present invention, RE recovers the packet data package based on CPRI frame receiving, and according to grouped data packet number, arranges and reverts to CPRI frame.
603, utilize CPRI frame number and Hyper Frame Number, preset droop duration to determine and send the time point of the data of carrying in superframe with respect to the time of delay of time synchronizing signal, preset droop duration refer to CPRI frame number be 0 and the Hyper Frame Number superframe that is 0 in the transmitting time point of the data of carrying with respect to the fixed delay time of time synchronizing signal;
In embodiments of the present invention, RE is after reverting to CPRI frame by packet data package, the data that the superframe of CPRI frame carries in unit sends superframe will be take, utilize CPRI frame number, Hyper Frame Number and preset droop duration to determine and send the time point of the data of carrying in superframe with respect to the time of delay of time synchronizing signal, wherein, preset fixing deviation duration refer to CPRI frame number be 0 and the Hyper Frame Number superframe that is 0 in the transmitting time point of the data of carrying with respect to the fixed delay time of time synchronizing signal.
In the embodiment of the present invention, the time point that RE utilizes CPRI frame number and Hyper Frame Number, preset droop duration to determine to send the data of carrying in superframe with respect to the mode of the time of delay of time synchronizing signal can be:
T(m)＝T
CPRI×N
CPRI+T
super×m+T
g
Wherein, T (m) is for sending the time point of the data of carrying in the superframe that Hyper Frame Number is m with respect to the time of delay of time synchronizing signal, T
cPRIfor the unit duration of CPRI frame, N
cPRIfor the CPRI frame number of superframe m, T
superfor the unit duration of superframe, T
gfor preset droop duration.
604, when receiving lock in time during signal, according to sending the data of carrying in described superframe time of delay.
In embodiments of the present invention, RE calculates and sends the data of carrying in superframe after the time of delay with respect to signal lock in time, when receiving lock in time during signal, according to sending the data of carrying in corresponding superframe the time of delay calculating, for example, if be 0.5ms the time of delay calculating, after receiving time synchronizing signal, postpone 0.5ms and send the data of carrying in corresponding superframe.
In embodiments of the present invention, by the packet data package based in CPRI frame is reverted to CPRI frame, and utilize CPRI frame number, Hyper Frame Number to determine the time of delay that sends corresponding superframe, after receiving signal lock in time, according to sending corresponding superframe this time of delay, realize 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 be absolute time, refers to Fig. 7, and in the embodiment of the present invention, when carrying absolute time in Frame, the embodiment of the method for the time synchronized of eating dishes without rice or wine, comprising:
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 the absolute time that RE sends the data of carrying in this Frame in Frame.
It should be noted that, in embodiments of the present invention, REC and RE adopt the timing synchronization sytem of homology, by this timing synchronization sytem, provide absolute time.
702, according to absolute time, send the data of carrying in Frame.
In embodiments of the present invention, if what carry in Frame is the absolute time that data send, RE sends the data of carrying in Frame according to this absolute time, for example, if the absolute time of carrying in Frame is 20: 28: 45 on the 16th May in 2012, the data that RE carries in sending this Frame 20: 28: 45 on the 16th May in 2012.
In embodiments of the present invention, by carry absolute time in Frame, make the RE that receives Frame to send the data of carrying in Frame according to this absolute time, effectively realize the time synchronized of eating dishes without rice or wine of RE side.
Fig. 3 is extremely embodiment illustrated in fig. 7 is all the methods from the time synchronized of eating dishes without rice or wine of RE side description, by describe the method for the time synchronized of eating dishes without rice or wine from REC side, refers to Fig. 8 below, and in the embodiment of the present invention, another embodiment of the method for the time synchronized of eating dishes without rice or wine, comprising:
801, REC determines that RE sends the temporal information of the data of carrying in Frame;
In embodiments of the present invention, REC is by the temporal information of specified data frame, and RE will determine the time that sends the data in this Frame according to the temporal information of carrying in the Frame receiving.
In embodiments of the present invention, the definite temporal information of REC can be absolute time, 17: 48: 36 on the 17th May in 2012 for example, also can be that RE sends the time point of the data of carrying in Frame with respect to the delay time parameter of time synchronizing signal, wherein, delay time parameter can be time value, for example, temporal information in Frame is for being 0.5ms with respect to time of delay of time synchronizing signal, RE postpones to send this Frame after 0.5ms after receiving time synchronizing signal, in addition, if Frame is the packet data package based on radio frames, delay time parameter can be radio frame number, subframe numbers, grouped data packet number, RE lateral root is according to the radio frame number in packet data package, subframe numbers, grouped data packet number can be determined time of delay, specifically refer to embodiment illustrated in fig. 5, if Frame is the packet data package based on CPRI frame, delay time parameter comprises: CPRI frame number, Hyper Frame Number, grouped data packet number, RE lateral root is determined the time of delay of the data in the superframe sending after recovering according to the CPRI frame number in packet data package, Hyper Frame Number, grouped data packet number, specifically refer to embodiment illustrated in fig. 6.
802, temporal information is carried at and in Frame, sends to RE.
In embodiments of the present invention, REC is kept at definite temporal information in corresponding Frame, and Frame is sent to RE.
In embodiments of the present invention, REC is by being carried at temporal information in Frame, this Frame is sent to RE, make RE according to the transmitting time of the temporal information specified data frame carrying in Frame or transmitting time point the time of delay with respect to time synchronizing signal, effectively realize the time synchronized of eating dishes without rice or wine of RE side.
Refer to Fig. 9, the embodiment for the wireless device in the embodiment of the present invention, comprising:
Receiving element 901, the Frame sending for receiving radio equipment controller REC, carries temporal information in described Frame;
In embodiments of the present invention, receiving element 901 receives the Frame that REC sends, and in this Frame, carries temporal information, then, is sent the data of carrying in Frame by processing unit 902 according to temporal information.
In embodiments of the present invention, by carry temporal information in Frame, make the RE that receives Frame to send the data of carrying in Frame according to temporal information, the transmission of the Frame of RE side all can be carried out according to the temporal information in Frame, can effectively realize the time synchronized of eating dishes without rice or wine of RE side.
Wireless device in embodiment, refers to Figure 10 for a better understanding of the present invention, and another embodiment for wireless device in the embodiment of the present invention, comprising:
Receiving element 901 as shown in Figure 9, processing unit 902, and similar to the content of middle description embodiment illustrated in fig. 9, repeat no more herein.
In embodiments of the present invention, if temporal information is for sending the absolute time of the data of carrying in Frame, 902 of described processing units are for sending according to absolute time the data that Frame carries.
In embodiments of the present invention, if temporal information is for sending the time point of the data of carrying in Frame with respect to the delay time parameter of signal lock in time, processing unit 902, for when receiving described lock in time during signal, sends the data of carrying in Frame by delay time parameter.And if this delay time parameter is time value, described processing unit 902, for when receiving lock in time during signal, sends the data of carrying in Frame by time value.Wherein, lock in time, signal can be by global positioning system (Global Positioning System, GPS), or the 1pps of Beidou satellite navigation system acquisition or the synchronizing signal of 10ms or 1ms.
In embodiments of the present invention, if Frame is the packet data package based on radio frames, delay time parameter comprises radio frame number, subframe numbers, grouped data packet number, and processing unit 902 comprises:
Transmitting element 1002, for when receiving described lock in time during signal, sends the data of carrying in described packet data package according to described time of delay.
Concrete, computing unit 1001 determines that according to the radio frame number at packet data package place, subframe numbers, grouped data packet number the time point that sends the data of carrying in packet data package with respect to the mode of the time of delay of time synchronizing signal is:
Wherein, T (n) is for sending the time point of the data of carrying in packet data package n with respect to the time of delay of time synchronizing signal, N_rf is the radio frame number of packet data package n, N_sub is the subframe numbers of packet data package n, L_PACKET (i) is for being numbered the preset length of packet data package of i, and Ts eats dishes without rice or wine time of delay of transmission for each data.
It should be noted that, in embodiments of the present invention, the length of a radio frames is 10ms, and a radio frames comprises 10 subframes, and the length of each subframe is 1ms, and data can be carried in subframe to be transmitted, wherein, in a subframe, can carry at least one packet data package, if at least 2 packet data package of carrying in subframe, the length of the packet data package in this subframe can be identical, also can be different.
In embodiments of the present invention, if the Frame that RE receives is the packet data package based on CPRI frame, delay time parameter comprises CPRI frame number and Hyper Frame Number, grouped data packet number;
Described processing unit 902 comprises:
Concrete, the time point that time calculating unit 1004 utilizes CPRI frame number and Hyper Frame Number, preset droop duration to determine to send the data of carrying in superframe with respect to the mode of the time of delay of time synchronizing signal can be:
T(m)＝T
CPRI×N
CPRI+T
super×m+T
g
Wherein, T (m) is for sending the time point of the data of carrying in the superframe that Hyper Frame Number is m with respect to the time of delay of time synchronizing signal, T
cPRIfor the unit duration of CPRI frame, N
cPRIfor the CPRI frame number of superframe m, T
superfor the unit duration of superframe, T
gfor preset droop duration.
It should be noted that, in embodiments of the present invention, the length of a CPRI frame is 10ms, and comprises 150 superframes, and Hyper Frame Number is 0-149, and the length of a superframe is 66.67us, and comprises 256 basic frames.It should be noted that, in embodiments of the present invention, CPRI frame in CPRI agreement need to keep fixing relation with time synchronizing signal, can be alignment relation, when receiving time synchronizing signal, send superframe 0, also can have droop duration, wherein, droop duration be CPRI frame with respect to the droop time of time synchronizing signal,, after receiving time synchronizing signal, postpone this droop duration and send again superframe 0.
In embodiments of the present invention, REC can be by Deta bearer on CPRI frame, and after carrying data, superframe in CPRI frame is divided into the packet data package of several arbitrary sizes, and the packet data package after dividing is sent to RE, therefore, RE will receive the packet data package based on CPRI frame of REC transmission, in this packet data package, carry and send the time point of the data in this packet data package with respect to the delay time parameter of time synchronizing signal, delay time parameter comprises CPRI frame, Hyper Frame Number, grouped data packet number.
In embodiments of the present invention, the receiving element 901 of wireless device will receive the Frame of REC transmission, and by processing unit 902, according to the temporal information in this Frame, sent the data of carrying in this Frame, be specially: if temporal information is for sending the absolute time of the data of carrying in Frame, processing unit 902 sends the data of carrying in Frame according to this absolute time; If temporal information is for sending the time point of the data of carrying in Frame with respect to the delay time parameter of signal lock in time, if and this delay time parameter is time value,, when receiving lock in time during signal, processing unit 902 sends the data of carrying in Frame according to this time value; If temporal information is for sending the time point of the data of carrying in Frame with respect to the delay time parameter of signal lock in time, and Frame is the packet data package based on radio frames, delay time parameter comprises radio frame number, subframe numbers, grouped data packet number, the computing unit 1001 in processing unit 902 will utilize radio frame number, subframe numbers, grouped data packet number, and the length of preset packet data package determines that the time point of the data of carrying in this packet data package of transmission is with respect to the time of delay of signal lock in time; And when receiving described lock in time during signal, by transmitting element 1002, according to this time of delay, sent the data of carrying in packet data package; If temporal information is for sending the time point of the data of carrying in Frame with respect to the delay time parameter of signal lock in time, and the Frame that RE receives is the packet data package based on CPRI frame, delay time parameter comprises CPRI frame number and Hyper Frame Number, grouped data packet number, the recovery unit 1003 in processing unit 902, by recovering CPRI frame according to the numbering of packet data package, comprises superframe in CPRI frame; Then, time calculating unit 1004 utilizes CPRI frame number and Hyper Frame Number, preset droop duration to determine and sends the time point of the data of carrying in superframe with respect to the time of delay of time synchronizing signal, when receiving described lock in time during signal, by superframe transmitting element 1005 according to sending the data of carrying in superframe time of delay.
In embodiments of the present invention, by carry temporal information in Frame, make the RE that receives Frame to send the data of carrying in Frame according to this temporal information, effectively realize the time synchronized of eating dishes without rice or wine of RE side.
Refer to Figure 11, in the embodiment of the present invention, the embodiment of radio equipment controller, comprising:
Determining unit 1101, for determining the temporal information of the data that wireless device RE transmission Frame carries;
Transmitting element 1102, sends to described RE for described temporal information is carried to described Frame.
It should be noted that, in embodiments of the present invention, temporal information is absolute time, or transmitting time point is with respect to the delay time parameter of time synchronized time signal;
Wherein, delay time parameter is time value, or, if Frame is the packet data package based on radio frames, delay time parameter comprises radio frame number, subframe numbers, grouped data packet number, or if Frame is the packet data package based on CPRI frame, delay time parameter comprises: CPRI frame number, Hyper Frame Number, grouped data packet number.
In embodiments of the present invention, the determining unit 1101 of radio equipment controller will determine that RE sends the temporal information of the data of carrying in Frame, and by transmitting element 1102, this temporal information will be carried at and in Frame, send to RE.
In embodiments of the present invention, REC is by being placed on temporal information in Frame, and Frame is sent to RE, make the RE can be according to the transmitting time of the data in the temporal information specified data frame carrying in Frame, and send Frame by this transmitting time, realize the time synchronized of eating dishes without rice or wine of RE side.
Refer to Figure 12, the embodiment for the clock synchronization system of eating dishes without rice or wine in the embodiment of the present invention, comprising:
One of ordinary skill in the art will appreciate that all or part of step realizing in above-described embodiment method is to come the hardware that instruction is relevant to complete by program, described program can be stored in a kind of computer-readable recording medium, the above-mentioned storage medium of mentioning can be read-only memory, disk or CD etc.
Above the method and system of a kind of time synchronized of eating dishes without rice or wine provided by the present invention, wireless device, radio equipment controller are described in detail, for one of ordinary skill in the art, thought according to the embodiment of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (18)
1. a method for the time synchronized of eating dishes without rice or wine, is characterized in that, comprising:
Wireless device RE receives the Frame that radio equipment controller REC sends, and in described Frame, carries temporal information;
According to described temporal information, send the data of carrying in described Frame.
2. method according to claim 1, is characterized in that, described temporal information is for sending the time point of the data of carrying in described Frame with respect to the delay time parameter of signal lock in time;
Describedly according to described temporal information, send the data of carrying in described Frame and comprise:
When receiving described lock in time during signal, according to described delay time parameter, send the data of carrying in described Frame.
3. method according to claim 2, is characterized in that, if described Frame is the packet data package based on radio frames, described delay time parameter comprises radio frame number, subframe numbers, grouped data packet number;
Described when receiving described lock in time during signal, according to described delay time parameter, send the data of carrying in described Frame and comprise:
Utilize described radio frame number, subframe numbers, grouped data packet number, the length of preset packet data package determines that the time point of the data of carrying in the described packet data package of transmission is with respect to the time of delay of signal lock in time;
When receiving described lock in time during signal, according to described time of delay, send the data of carrying in described packet data package n.
4. method according to claim 3, it is characterized in that, the described length of utilizing described radio frame number, subframe numbers, grouped data packet number, preset packet data package determine the time point that sends the data of carrying in described packet data package with respect to lock in time signal the mode of time of delay be:
Wherein, T (n) is for sending the time point of the data of carrying in packet data package n with respect to the time of delay of time synchronizing signal, N_rf is the radio frame number of packet data package n, N_sub is the subframe numbers of packet data package n, L_PACKET (i) is for being numbered the preset length of packet data package of i, and Ts eats dishes without rice or wine time of delay of transmission for each data.
5. method according to claim 2, is characterized in that, described Frame is the packet data package based on common public radio interface CPRI frame, and described delay time parameter comprises CPRI frame number, Hyper Frame Number and grouped data packet number;
When receiving described lock in time during signal, describedly according to described delay time parameter, send the data of carrying in described Frame and comprise:
According to described grouped data packet number, recover described CPRI frame, in described CPRI frame, comprise superframe;
Utilize described CPRI frame number and Hyper Frame Number, preset droop duration to determine and send the time point of the data of carrying in described superframe with respect to the time of delay of time synchronizing signal, described preset droop duration refer to CPRI frame number be 0 and the Hyper Frame Number superframe that is 0 in the transmitting time point of the data of carrying with respect to the fixed delay time of time synchronizing signal;
When receiving described lock in time during signal, according to described time of delay, send the data of carrying in described superframe.
6. method according to claim 5, is characterized in that, the described time point that utilizes described CPRI frame number and Hyper Frame Number, preset droop duration to determine to send the data of carrying in described superframe with respect to the mode of the time of delay of time synchronizing signal is:
T(m)＝T
CPRI×N
CPRI+T
super×m+T
g
Wherein, T (m) is for sending the time point of the data of carrying in the superframe that Hyper Frame Number is m with respect to the time of delay of time synchronizing signal, T
cPRIfor the unit duration of CPRI frame, N
cPRIfor the CPRI frame number of superframe m, T
superfor the unit duration of superframe, T
gfor preset droop duration.
7. method according to claim 2, is characterized in that, if described delay time parameter is time value, described when receiving described lock in time during signal, sends the data of carrying in described Frame comprise according to described delay time parameter:
When receiving described lock in time during signal, by described time value, send the data of carrying in described Frame.
8. method according to claim 1, is characterized in that, described temporal information is for sending the absolute time of the data of carrying in described Frame, describedly according to described temporal information, sends the data of carrying in described Frame and comprises:
According to described absolute time, send the data of carrying in described Frame.
9. a method for the time synchronized of eating dishes without rice or wine, is characterized in that, comprising:
Wireless controller REC determines that wireless device RE sends the temporal information of the data of carrying in Frame;
Described temporal information is carried at and in described Frame, sends to described RE.
10. method according to claim 9, is characterized in that, described temporal information is absolute time, or transmitting time point is with respect to the delay time parameter of time synchronized time signal;
Described delay time parameter is time value, or, if described Frame is the packet data package based on radio frames, described delay time parameter comprises radio frame number, subframe numbers, grouped data packet number, or, if described Frame is the packet data package based on CPRI frame, described delay time parameter comprises: CPRI frame number, Hyper Frame Number, grouped data packet number.
11. 1 kinds of wireless device RE, is characterized in that, comprising:
Receiving element, the Frame sending for receiving radio equipment controller REC, carries temporal information in described Frame;
Processing unit, for sending according to described temporal information the data that described Frame carries.
12. wireless devices according to claim 11, is characterized in that,
If described temporal information is for sending the absolute time of the data of carrying in described Frame, described processing unit is for sending the data that described Frame carries according to described absolute time;
If described temporal information is for sending the time point of the data of carrying in described Frame with respect to the delay time parameter of signal lock in time, described processing unit, for when receiving described lock in time during signal, sends the data of carrying in described Frame by described delay time parameter.
13. wireless devices according to claim 12, is characterized in that, if described delay time parameter is time value, described processing unit, for when receiving described lock in time during signal, sends the data of carrying in described Frame by described time value.
14. wireless devices according to claim 12, is characterized in that, described Frame is the packet data package based on radio frames, and described delay time parameter comprises radio frame number, subframe numbers, grouped data packet number;
Described processing unit comprises:
Computing unit, for utilizing described radio frame number, subframe numbers, grouped data packet number, the length of preset packet data package determines that the time point of the data of carrying in the described packet data package of transmission is with respect to the time of delay of signal lock in time;
Transmitting element, for when receiving described lock in time during signal, sends the data of carrying in described packet data package according to described time of delay.
15. wireless devices according to claim 12, is characterized in that, described Frame is the packet data package based on CPRI frame, and described delay time parameter comprises CPRI frame number and Hyper Frame Number, grouped data packet number;
Described processing unit comprises:
Recovery unit, for recover described CPRI frame according to the numbering of described packet data package, comprises superframe in described CPRI frame;
Time calculating unit, for utilizing described CPRI frame number and Hyper Frame Number, preset droop duration to determine to send the time point of the data that described superframe carries with respect to the time of delay of time synchronizing signal, described preset droop duration refer to CPRI frame number be 0 and the Hyper Frame Number superframe that is 0 in the transmitting time point of the data of carrying with respect to the fixed delay time of time synchronizing signal;
Superframe transmitting element, for when receiving described lock in time during signal, sends the data of carrying in described superframe according to described time of delay.
16. 1 kinds of wireless control apparatus, is characterized in that, comprising:
Determining unit, for determining the temporal information of the data that wireless device RE transmission Frame carries;
Transmitting element, sends to described RE for described temporal information is carried to described Frame.
17. wireless control apparatus according to claim 16, is characterized in that, described temporal information is absolute time, or transmitting time point is with respect to the delay time parameter of time synchronized time signal; Described delay time parameter is time value, or, if described Frame is the packet data package based on radio frames, described delay time parameter comprises radio frame number, subframe numbers, grouped data packet number, or, if described Frame is the packet data package based on CPRI frame, described delay time parameter comprises: CPRI frame number, Hyper Frame Number, grouped data packet number.
The system of 18. 1 kinds of time synchronized of eating dishes without rice or wine, is characterized in that, comprising:
Wireless device as described in claim 11 to 15 any one, and the radio equipment controller as described in claim 16 or 17.
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