CN107534688A

CN107534688A - A kind of common public radio interface CPRI data transmission method, relevant device and system

Info

Publication number: CN107534688A
Application number: CN201580079139.2A
Authority: CN
Inventors: 成卫东
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2015-05-29
Filing date: 2015-05-29
Publication date: 2018-01-02
Also published as: WO2016191921A1

Abstract

The embodiment of the invention discloses a kind of common public radio interface CPRI data transmission method, equipment, receiving device and system are sent, wherein, the transmission equipment includes：Removing module, for deleting preset number control word in the public radio interface CPRI frame for needing to transmit；Format converting module, for increasing frame head and frame gap IPG for the CPRI frames after removing module deletion control word, obtain the ethernet frame that can be transmitted in ethernet physical layer；Sending module, for sending the ethernet frame to receiving device by the ethernet physical layer.Using the embodiment of the present invention, the efficiency of transmission of CPRI data can be lifted.

Description

A kind of common public radio interface CPRI data transmission method, relevant device and system

Technical field

The present embodiments relate to field of communication technology more particularly to a kind of common public radio interface CPRI data transmission methods, relevant device and system.

Background technique

Common public radio interface (Common Public Radio Interface, referred to as " CPRI ") specification is the prepared specification about radio base station internal key interface of more companies by industry cooperation, it defines physical layer and data link layer protocol, for controlling and managing radio base station internal wireless device controller (Radio Equipment Controller, referred to as " REC ") and wireless device (Radio Equipment, referred to as " RE ") between or two RE between data transmission.

Currently, proposing the CPRI framing control comprising CPRI data is ethernet frame, in order to reduce base station deployment cost and difficulty of construction so as to transmit CPRI data on cable by ether physical chip.The CPRI frame is superframe, it includes CPRI data be usually made of 256 basic frames, each basic frame includes 16 time slots, i.e. W=0 ... 15；Wherein, W=0 is the control time slot for including control word, and W=1 ... 15 is orthogonal modulation (IQ) data slot, and the I/Q data transmitted is needed for base station arrangements.In practical applications, the basic structure of ethernet frame is frame head (7 0X55+1 0XD5)+data+frame gap (Inter Package Gap, referred to as " IPG "), it needs to encapsulate frame head and IPG to CPRI data, wherein, IPG is at least 96 bit-time Bit Time, i.e. 12 bytes.That is, 20 bytes are essential in total by frame head and IPG when will include that the CPRI frames of CPRI data is converted to ethernet frame.However, gigabit Ethernet (Gigabit Ethernet, referred to as " GE ") the maximum ethernet frame that can be supported of physical chip is 10kb, many times, such as line rate be 1.2288Gbps, by CPRI framing control be ethernet frame when, due to the encapsulation of frame head and IPG, so that the ethernet frame after conversion is greater than 10kb, in order to realize the CPRI data transmission based on GE, I/Q data bandwidth can then be tied up, so that part IQ bandwidth cannot be used for transmission I/Q data, need to sacrifice IQ bandwidth to realize the CPRI data transmission based on GE, so that the efficiency of transmission of CPRI data is lower.

Summary of the invention

The embodiment of the present invention provides a kind of CPRI data transmission method, relevant device and system, is able to ascend the efficiency of transmission of CPRI data.

In a first aspect, the embodiment of the invention provides a kind of sending devices, comprising:

Removing module, for deleting preset number control word in the public radio interface CPRI frame for needing to transmit；

Format converting module obtains the ethernet frame that can be transmitted in ethernet physical layer for increasing frame head and frame gap IPG for the CPRI frame after removing module deletion control word；

Sending module, for sending the ethernet frame to receiving device by the ethernet physical layer.

With reference to first aspect, in the first possible implementation of the first aspect, the removing module includes:

Acquiring unit, for obtaining the corresponding current line rate of CPRI frame for needing to transmit；

Number decision unit, the current line rate for being obtained according to the acquiring unit, determine the number of the control word for needing to need to delete in the CPRI frame transmitted, wherein, the total length of the number control word for needing to delete is not less than the sum of the frame head and the total length of the IPG；

Data delete unit, for deleting the number control word for needing number decision unit described in the CPRI frame transmitted to determine.

With reference to first aspect or the first possible implementation of first aspect, in the second possible implementation of the first aspect, the control word of deletion is the customized control word or reserved control word in the CPRI frame for needing to transmit.

Second aspect, the embodiment of the invention also provides a kind of sending devices, comprising:

Format converting module, for need the CPRI frame that transmits to increase frame head and IPG, obtaining the ethernet frame that can be transmitted in ethernet physical layer, the corresponding clock of the CPRI frame is the first clock；

Sending module, for sending the ethernet frame to receiving device in second clock and by the ethernet physical layer, wherein the second clock is greater than first clock.

In conjunction with second aspect, in the first possible implementation of the second aspect, the sending device is also Include:

The frame length of the ethernet frame is calculated for the frame length, first clock and the second clock according to the CPRI frame in computing module；

The computing module, is also used to calculate the first difference of the frame length of the ethernet frame and the frame length of the CPRI frame, and calculates the second difference of the sum of first difference and the frame head and the total length of the IPG；

It is grouped determining module, second difference for being calculated according to the computing module determines the grouping of ethernet frame when carrying out data transmission；

The sending module is specifically used for:

Based on the grouping, the ethernet frame is sent to receiving device in second clock and by the ethernet physical layer.

In conjunction with the possible implementation of the first of second aspect or second aspect, in a second possible implementation of the second aspect, first clock is 122.88MHz, and the second clock is 125MHz.

The third aspect, the embodiment of the invention also provides a kind of receiving devices, comprising:

Receiving module, for receiving the ethernet frame that sending device is sent by ethernet physical layer, the ethernet frame is that the sending device deletes preset number control word in the CPRI frame for needing to transmit, and increase frame head and IPG to delete the CPRI frame after control word, the obtained frame that can be transmitted in ethernet physical layer；

Recovery module obtains CPRI frame to be restored for removing the frame head and the IPG of the ethernet frame；

The recovery module is also used to the preset number control word to undelete from the CPRI frame to be restored, and the CPRI frame to be restored is reverted to the CPRI frame before deleting control word.

In conjunction with the third aspect, in the first possible implementation of the third aspect, the preset number is that the corresponding current line rate of the CPRI frame transmitted as needed is determined, and the total length for the preset number control word deleted is not less than the sum of the frame head and the total length of the IPG.

In conjunction with the possible implementation of the first of the third aspect or the third aspect, in the second possible implementation of the third aspect, the control word of deletion is oneself in the CPRI frame for needing to transmit Define control word or reserved control word.

Fourth aspect, the embodiment of the invention also provides a kind of receiving devices, comprising:

Receiving module, for receiving the ethernet frame that sending device is sent in second clock and by ethernet physical layer, wherein, the ethernet frame is that the sending device is that the CPRI frame for needing to transmit increases frame head and IPG, the obtained frame that can be transmitted in ethernet physical layer, the corresponding clock of the CPRI frame is the first clock, and the second clock is greater than first clock；

Recovery module obtains the CPRI frame for removing the frame head and the IPG of the ethernet frame.

In conjunction with fourth aspect, in the first possible implementation of the fourth aspect, first clock is 122.88MHz, and the second clock is 125MHz.

5th aspect, the embodiment of the invention also provides a kind of CPRI data transmission methods, comprising:

Sending device deletes preset number control word in the public radio interface CPRI frame for needing to transmit；

The sending device is that the CPRI frame after deleting control word increases frame head and frame gap IPG, obtains the ethernet frame that can be transmitted in ethernet physical layer；

The sending device sends the ethernet frame to receiving device by the ethernet physical layer.

In conjunction with the 5th aspect, in the first possible implementation of the 5th aspect, the sending device deletes preset number control word in the CPRI frame for needing to transmit, comprising:

Sending device obtains the corresponding current line rate of CPRI frame for needing to transmit；

The sending device is according to the current line rate, determine the number of the control word for needing to need to delete in the CPRI frame transmitted, wherein, the total length of the number control word for needing to delete is not less than the sum of the frame head and the total length of the IPG；

The sending device deletes number control word described in the CPRI frame for needing to transmit.

In conjunction with the first possible implementation of the 5th aspect or the 5th aspect, in second of possible implementation of the 5th aspect, the control word of deletion is the customized control word or reserved control word in the CPRI frame for needing to transmit.

6th aspect, the embodiment of the invention also provides a kind of CPRI data transmission methods, comprising:

Sending device is that the CPRI frame for needing to transmit increases frame head and IPG, and obtaining can be in ethernet physical layer The ethernet frame of transmission, the corresponding clock of the CPRI frame are the first clock；

The sending device sends the ethernet frame to receiving device in second clock and by the ethernet physical layer, wherein the second clock is greater than first clock.

In conjunction with the 6th aspect, in the first possible implementation of the 6th aspect, the method also includes:

The frame length of the ethernet frame is calculated according to the frame length, first clock and the second clock of the CPRI frame in the sending device；

The sending device calculates the first difference of the frame length of the ethernet frame and the frame length of the CPRI frame, and calculates the second difference of the sum of first difference and the frame head and the total length of the IPG；

The sending device determines the grouping of ethernet frame when carrying out data transmission according to second difference；

The sending device sends the ethernet frame to receiving device in second clock and by the ethernet physical layer, comprising:

The sending device is based on the grouping, sends the ethernet frame to receiving device in second clock and by the ethernet physical layer.

In conjunction with the first possible implementation of the 6th aspect or the 6th aspect, in second of possible implementation of the 6th aspect, first clock is 122.88MHz, and the second clock is 125MHz.

7th aspect, the embodiment of the invention also provides a kind of CPRI data transmission methods, comprising:

Receiving device receives the ethernet frame that sending device is sent by ethernet physical layer, the ethernet frame is that the sending device deletes preset number control word in the CPRI frame for needing to transmit, and increase frame head and IPG to delete the CPRI frame after control word, the obtained frame that can be transmitted in ethernet physical layer；

The receiving device removes the frame head and the IPG of the ethernet frame, obtains CPRI frame to be restored；

The CPRI frame to be restored is reverted to the CPRI frame before deleting control word by the preset number control word that the receiving device undeletes from the CPRI frame to be restored.

In conjunction with the 7th aspect, in the first possible implementation of the 7th aspect, the preset number is that the corresponding current line rate of the CPRI frame transmitted as needed is determined, and the total length for the preset number control word deleted is not less than the sum of the frame head and the total length of the IPG.

In conjunction with the first possible implementation of the 7th aspect or the 7th aspect, in second of possible implementation of the 7th aspect, the control word of deletion is the customized control word or reserved control word in the CPRI frame for needing to transmit.

Eighth aspect, the embodiment of the invention also provides a kind of CPRI data transmission methods, comprising:

Receiving device receives the ethernet frame that sending device is sent in second clock and by ethernet physical layer, wherein, the ethernet frame is that the sending device is that the CPRI frame for needing to transmit increases frame head and IPG, the obtained frame that can be transmitted in ethernet physical layer, the corresponding clock of the CPRI frame is the first clock, and the second clock is greater than first clock；

The receiving device removes the frame head and the IPG of the ethernet frame, obtains the CPRI frame.

In conjunction with eighth aspect, in the first possible implementation of eighth aspect, first clock is 122.88MHz, and the second clock is 125MHz.

9th aspect, the embodiment of the invention also provides a kind of computer storage medium, the computer storage medium is stored with program, and described program includes the steps that some or all of the CPRI data transmission method of above-mentioned 5th aspect when executing.

Tenth aspect, the embodiment of the invention also provides a kind of computer storage medium, the computer storage medium is stored with program, and described program includes the steps that some or all of the CPRI data transmission method of above-mentioned 6th aspect when executing.

Tenth on the one hand, and the embodiment of the invention also provides a kind of computer storage medium, the computer storage medium is stored with program, and described program includes the steps that some or all of the CPRI data transmission method of above-mentioned 7th aspect when executing.

12nd aspect, the embodiment of the invention also provides a kind of computer storage medium, the computer storage medium is stored with program, and described program includes the steps that some or all of CPRI data transmission method of above-mentioned eighth aspect when executing.

13rd aspect, the embodiment of the invention also provides a kind of sending devices, comprising: transmitter, receiver, memory and processor,

Wherein, the processor executes following steps:

Delete preset number control word in the public radio interface CPRI frame for needing to transmit；

Increase frame head and frame gap IPG to delete the CPRI frame after control word, obtains the ethernet frame that can be transmitted in ethernet physical layer；

The ethernet frame is sent to receiving device based on the transmitter, and by the ethernet physical layer.

In conjunction with the 13rd aspect, in the first possible implementation of the 13rd aspect, processor preset number control word in executing the CPRI frame deleted and need to transmit specifically executes following steps:

Obtain the corresponding current line rate of CPRI frame for needing to transmit；

According to the current line rate, the number of the control word for needing to need to delete in the CPRI frame transmitted is determined, wherein the total length of the number control word for needing to delete is not less than the sum of the frame head and the total length of the IPG；

Delete number control word described in the CPRI frame for needing to transmit.

In conjunction with the first possible implementation of the 13rd aspect or the 13rd aspect, in second of possible implementation of the 13rd aspect, the control word of deletion is the customized control word or reserved control word in the CPRI frame for needing to transmit.

Fourteenth aspect, the embodiment of the invention also provides a kind of sending devices, comprising: transmitter, receiver, memory and processor,

Wherein, the processor executes following steps:

To need the CPRI frame that transmits to increase frame head and IPG, the ethernet frame that can be transmitted in ethernet physical layer is obtained, the corresponding clock of the CPRI frame is the first clock；

Based on the transmitter, the ethernet frame is sent to receiving device in second clock and by the ethernet physical layer, wherein the second clock is greater than first clock.

In conjunction with fourteenth aspect, in the first possible implementation of fourteenth aspect, the processor is also used to execute following steps:

According to the frame length of the CPRI frame, first clock and the second clock, the frame length of the ethernet frame is calculated；

The first difference of the frame length of the ethernet frame and the frame length of the CPRI frame is calculated, and is calculated Second difference of the sum of the total length of first difference and the frame head and the IPG；

According to second difference, the grouping of ethernet frame when carrying out data transmission is determined；

The processor sends the ethernet frame to receiving device in second clock and by the ethernet physical layer executing described, specifically executes following steps:

In conjunction with the possible implementation of the first of fourteenth aspect or fourteenth aspect, in second of possible implementation of fourteenth aspect, first clock is 122.88MHz, and the second clock is 125MHz.

15th aspect, the embodiment of the invention also provides a kind of receiving devices, comprising: transmitter, receiver, memory and processor,

Wherein, the processor executes following steps:

Based on the receiver, and the ethernet frame that sending device is sent is received by ethernet physical layer, the ethernet frame is that the sending device deletes preset number control word in the CPRI frame for needing to transmit, and increase frame head and IPG to delete the CPRI frame after control word, the obtained frame that can be transmitted in ethernet physical layer；

The frame head and the IPG for removing the ethernet frame, obtain CPRI frame to be restored；

The CPRI frame to be restored is reverted to the CPRI frame before deleting control word by the preset number control word to undelete from the CPRI frame to be restored.

In conjunction with the 15th aspect, in the first possible implementation of the 15th aspect, the preset number is that the corresponding current line rate of the CPRI frame transmitted as needed is determined, and the total length for the preset number control word deleted is not less than the sum of the frame head and the total length of the IPG.

In conjunction with the first possible implementation of the 15th aspect or the 15th aspect, in second of possible implementation of the 15th aspect, the control word of deletion is the customized control word or reserved control word in the CPRI frame for needing to transmit.

16th aspect, the embodiment of the invention provides a kind of receiving devices, comprising: transmitter, receiver, memory and processor,

Wherein, the processor executes following steps:

Based on the receiver, the ethernet frame that sending device is sent is received in second clock and by ethernet physical layer, wherein, the ethernet frame is that the sending device is that the CPRI frame for needing to transmit increases frame head and IPG, the obtained frame that can be transmitted in ethernet physical layer, the corresponding clock of the CPRI frame is the first clock, and the second clock is greater than first clock；

The frame head and the IPG for removing the ethernet frame, obtain the CPRI frame.

In conjunction with the 16th aspect, in the first possible implementation of the 16th aspect, first clock is 122.88MHz, and the second clock is 125MHz.

17th aspect, the embodiment of the invention also provides a kind of CPRI data transmission systems, comprising: sending device and receiving device, wherein

The sending device, for deleting preset number control word in the public radio interface CPRI frame for needing to transmit；Increase frame head and frame gap IPG to delete the CPRI frame after control word, obtains the ethernet frame that can be transmitted in ethernet physical layer；The ethernet frame is sent to the receiving device by the ethernet physical layer；

The receiving device, for receiving the ethernet frame that the sending device is sent by the ethernet physical layer；The frame head and the IPG for removing the ethernet frame, obtain CPRI frame to be restored；The CPRI frame to be restored is reverted to the CPRI frame before deleting control word by the preset number control word to undelete from the CPRI frame to be restored.

18th aspect, the embodiment of the invention provides a kind of CPRI data transmission systems, comprising: sending device and receiving device, wherein

The sending device, for need the CPRI frame that transmits to increase frame head and IPG, obtaining the ethernet frame that can be transmitted in ethernet physical layer, the corresponding clock of the CPRI frame is the first clock；The ethernet frame is sent to the receiving device in second clock and by the ethernet physical layer, wherein the second clock is greater than first clock；

The receiving device, for receiving the ethernet frame that the sending device is sent in the second clock and by the ethernet physical layer；The frame head and the IPG for removing the ethernet frame, obtain the CPRI frame.

The embodiment of the present invention is when transmitting CPRI data by ethernet physical layer chip, by deleting part control word in CPRI frame, in the location transmission I/Q data of the control word of deletion, or it is converted by clock domain, the work clock for controlling Ethernet is greater than CPRI clock, so that I/Q data space should no longer be tied up based on the CPRI data transmission of ethernet physical layer, to improve CPRI data transmission efficiency, system performance is enhanced.

Detailed description of the invention

In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, the drawings to be used in the description of the embodiments or prior art will be briefly described below, apparently, drawings in the following description are only some embodiments of the invention, for those of ordinary skill in the art, without creative efforts, it is also possible to obtain other drawings based on these drawings.

Fig. 1 a is a kind of system schematic of application scenarios provided in an embodiment of the present invention；

Fig. 1 b is a kind of system schematic of application scenarios provided in an embodiment of the present invention；

Fig. 1 c is the system schematic of another application scenarios provided in an embodiment of the present invention；

Fig. 1 d is the system schematic of another application scenarios provided in an embodiment of the present invention；

Fig. 2 is a kind of structural schematic diagram of sending device provided in an embodiment of the present invention；

Fig. 3 is a kind of structural schematic diagram of ethernet frame provided in an embodiment of the present invention；

Fig. 4 is a kind of structural schematic diagram of superframe provided in an embodiment of the present invention；

Fig. 5 is a kind of structural schematic diagram of receiving device provided in an embodiment of the present invention；

Fig. 6 is a kind of structural schematic diagram that the transmission of CPRI data is realized by deleting control word provided in an embodiment of the present invention；

Fig. 7 is the structural schematic diagram of another sending device provided in an embodiment of the present invention；

Fig. 8 is the structural schematic diagram of another receiving device provided in an embodiment of the present invention；

Fig. 9 is a kind of structural schematic diagram that the transmission of CPRI data is realized by transformation ethernet physical layer clock provided in an embodiment of the present invention；

Figure 10 is a kind of ethernet frame packet configuration schematic diagram provided in an embodiment of the present invention；

Figure 11 is a kind of flow diagram of CPRI data transmission method provided in an embodiment of the present invention；

Figure 12 is the flow diagram of another kind CPRI data transmission method provided in an embodiment of the present invention；

Figure 13 is the flow diagram of another CPRI data transmission method provided in an embodiment of the present invention；

Figure 14 is the flow diagram of another CPRI data transmission method provided in an embodiment of the present invention；

Figure 15 is the structural schematic diagram of another sending device provided in an embodiment of the present invention；

Figure 16 is the structural schematic diagram of another sending device provided in an embodiment of the present invention；

Figure 17 is the structural schematic diagram of another receiving device provided in an embodiment of the present invention；

Figure 18 is the structural schematic diagram of another receiving device provided in an embodiment of the present invention；

Figure 19 is a kind of structural schematic diagram of CPRI data transmission system provided in an embodiment of the present invention；

Figure 20 is the structural schematic diagram of another kind CPRI data transmission system provided in an embodiment of the present invention.

Specific embodiment

Following will be combined with the drawings in the embodiments of the present invention, and technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, every other embodiment obtained by those of ordinary skill in the art without making creative efforts, shall fall within the protection scope of the present invention.

It should be understood that, the technical solution of the embodiment of the present invention can be applied to the wireless communication system of various standards, such as: CDMA (Code Division Multiple Access, referred to as " CDMA ") system, wideband code division multiple access (Wideband Code Division Multiple Access, referred to as " WCDMA ") system, long term evolution (Long Term Evolution, referred to as " LTE ") system, Universal Mobile Communication System (Universal Mobile Telecommunication System, referred to as " UMTS ") or WLAN (Wireless L Ocal Area Networks, referred to as " WLAN ") communication system etc..Its application scenarios can be indoor distributed system or outdoor compartment system, and the embodiment of the present invention is without limitation.

Specifically, as shown in Figure 1a, from concrete application, CPRI specification can be used between base station baseband unit and RF remote unit (Radio Remote Unit, referred to as " RRU ") and the data transmission between RRU and RRU.Alternatively, as shown in Figure 1 b, CPRI specification can also be used in the transmission of the data between base station baseband unit and expanding element and between expanding element and RRU.For example, the method for the embodiment of the present invention can be applied particularly to the data transmission of the relevant CPRI interface of following system architecture: Radio frequency stretch system, simulation feed-in digital signal compartment system, base station digital baseband FD feed compartment system etc..

Wherein, as shown in Figure 1a, in radio frequency stretch system, the embodiment of the present invention can be applied to the data transmission of the CPRI interface used between base station baseband unit and RRU or between RRU and RRU.

Wherein, as illustrated in figure 1 c, it is the system schematic of another application scenarios provided in an embodiment of the present invention, specially simulates feed-in digital signal compartment system schematic diagram.In simulation feed-in digital signal compartment system, in order to realize the coverage area for zooming out and expanding base station, upstream noise superposition is reduced, which uses optical fiber+category-5 cable, optical fiber+optical fiber repeater distribution mode.As illustrated in figure 1 c, the embodiment of the present invention applies also between access unit and expanding element, and between expanding element and expanding element, the data of the CPRI interface used between expanding element and RRU or between RRU and RRU are transmitted.

It wherein, as shown in Figure 1 d, is the system schematic of another application scenarios provided in an embodiment of the present invention, specially base station digital baseband FD feed compartment system schematic diagram.Access unit is mainly transformed into Base Band Unit by the difference of the base station digital baseband FD feed compartment system and above-mentioned simulation feed-in digital signal compartment system, and baseband signal is fed directly into expanding element by Base Band Unit.As shown in Figure 1 d, in the base station digital baseband FD feed compartment system, it is mainly used between Base Band Unit and expanding element, between expanding element and expanding element, between expanding element and RRU, the data of the CPRI interface used between RRU and RRU are transmitted.

Fig. 2 is referred to, is a kind of structural schematic diagram of sending device provided in an embodiment of the present invention, specifically, the sending device of the embodiment of the present invention may include removing module 11, format converting module 12 and sending module 13.Wherein,

The removing module 11, for deleting preset number control word in the public radio interface CPRI frame for needing to transmit.

It should be noted that the sending device that the present invention is implemented can be specially the equipment that can be used as transmitting terminal when carrying out CPRI data and transmitting including the expanding element etc. in baseband processing unit, simulation feed-in digital signal compartment system or the base station digital baseband FD feed compartment system in above-mentioned Remote Radio Unit.

In specific embodiment, the CPRI frame of needs transmission is the superframe in CPRI agreement, the basic frame that can transmit the superframe as Ethernet data.Wherein, which is made of 256 basic frames of CPRI, the frame length of a basic frame of CPRI: 1Tc=1/3.84MHz=260.416667ns.One basic frame of CPRI includes 16 time slots: W=0 ... 15, W=0 are the control time slot for including control word, and W=1 ... 15 is I/Q data time slot, and the I/Q data transmitted is needed for base station arrangements.Word length T is corresponding with current line rate.For example, the basic frame structure of the corresponding CPRI of 1228.8Mbit/s line rate is 16 (bit wide) * 16 (time slot) in CPRI agreement.

Since the data transmission of the Ethernet is the data transmission based on basic frame, the most basic structure of basic frame, that is, ethernet frame of one ethernet physical layer is frame head (7 0X55+1 0XD5, that is 8 bytes)+data+frame gap IPG, wherein, IPG is at least 96 Bit Time (bit-time), i.e. 12 bytes.That is, carrying out frame format conversion, by CPRI frame, that is, superframe be converted to suitable for ethernet physical layer transmission frame i.e. ethernet frame when, encapsulation frame head and frame gap IPG be it is essential, this this may result in be more than to ethernet frame that the CPRI frame that transmits of needs obtain after frame format conversion the basic frame of maximum that ethernet physical layer chip is supported length.As shown in figure 3, being a kind of structural schematic diagram of ethernet frame provided in an embodiment of the present invention.Specifically, the basic frame of the maximum that the GE physical chip is supported is 10kb, in the case where line rate is 1.2288Gbps, one CPRI superframe (including 256 basic frames of CPRI, chip i.e. as shown in Figure 3) length be 8192 bytes, just less than 10kb, and be converted to ethernet frame, it has then been more than 10kb after adding frame head (8 bytes) and IPG (12 bytes).It then will lead at this time and tie up IQ bandwidth.Therefore, before carrying out frame format conversion, the control word of preset number can be deleted by removing module 11, is used for transmission I/Q data in the position of the control word of the deletion, to compensate the frame head and the corresponding bandwidth of IPG, the CPRI data transmission based on GE is realized without sacrificing IQ bandwidth.Wherein, it can be preconfigured fixed number which, which is the number for the control word deleted, such as 20；The number that the needs that the current line rate of the CPRI frame is determined according to or are deleted.

The format converting module 12 obtains the ethernet frame that can be transmitted in ethernet physical layer for increasing frame head and frame gap IPG for the CPRI frame after the removing module 11 deletion control word.

The sending module 13, for sending the ether to receiving device by the ethernet physical layer Net frame.

In specific embodiment, preset number control word is deleted in removing module 11, to realize to after the CPRI frame i.e. bandwidth compensation of superframe for needing to transmit, format converting module 12 can increase frame head and IPG to the CPRI frame after deletion control word, to meet the basic frame structure of ethernet physical layer, the ethernet frame that can be transmitted in ethernet netting twine is obtained.The ethernet frame is sent to receiving device by ethernet netting twine by sending module 13, so that receiving device is when receiving the ethernet frame, remove the frame head and IPG of the encapsulation, obtain CPRI data, and the structure based on CPRI superframe restores the control word of the deletion, restore to obtain deleting the CPRI frame before control word, that is, reverts to the CPRI frame structure of standard.

Further, in an alternate embodiment of the invention, the removing module 11 may include (not shown):

Acquiring unit 111 obtains the corresponding current line rate of CPRI frame for needing to transmit；

Number decision unit 112, the current line rate for being obtained according to the acquiring unit 111, determine the number of the control word for needing to need to delete in the CPRI frame transmitted, wherein, the total length of the number control word for needing to delete is not less than the sum of the frame head and the total length of the IPG；

Data delete unit 113, for deleting the number control word for needing number decision unit 112 described in the CPRI frame transmitted to determine.

In specific embodiment, superframe in the CPRI frame, that is, CPRI agreement includes 256 basic frames, and nested step by step 256 control words (each basic frame includes a control word).Specifically, as shown in figure 4, be a kind of structural schematic diagram of superframe provided in an embodiment of the present invention, nested 256 control words can be 64 sub-channels by every 41 group of volumes step by step for this.Subchannel serial number Ns=0 ... 63, the control word serial number Xs=0 ... 3 in every sub-channels, then the control word serial number X=Ns+64*Xs in a nesting.Wherein, the control word combination in different shape region defines different purposes, for example, synchronization timing, control at a slow speed and manage, producer it is customized etc., further include reserved some control words.Optionally, the control word of the deletion can be the customized control word or reserved control word in the CPRI frame of needs transmission.

Specifically, since Ethernet transmission is the transmission based on basic frame, the most basic structure of the basic frame of one physical layer is frame head+data+IPG, in the frame structure of Ethernet, frame head and IPG are essential, the CPRI data transmission based on GE is realized in order to avoid sacrificing IQ bandwidth, and transmitting terminal, that is, sending device can pass through acquiring unit before CPRI frame, that is, CPRI data format superframe is converted to ethernet frame 111 obtain the corresponding current line rate of CPRI frame i.e. current super frame for needing to transmit, number decision unit 112 is according to deserving preceding line rate, determine the number for for example customized control word of control word or reserved control word that needs are deleted, the total length of the corresponding control word of the number is not less than the sum of the total length of the frame head and IPG (i.e. 20Byte), the number control word that the number decision unit 112 is determined can be deleted to which data delete unit 113, delete the control word of 20Byte or 20Byte or more, the position of the deletion control word is used for transmission I/Q data, so that avoid CPRI frame is converted to after ethernet frame caused by occupancy IQ bandwidth the case where.

It is a kind of structural schematic diagram of receiving device provided in an embodiment of the present invention please also refer to Fig. 5, specifically, the receiving device of the embodiment of the present invention may include receiving module 21 and recovery module 22.Wherein,

The receiving module 21, for receiving the ethernet frame that sending device is sent by ethernet physical layer, the ethernet frame is that the sending device deletes preset number control word in the CPRI frame for needing to transmit, and increase frame head and IPG to delete the CPRI frame after control word, the obtained frame that can be transmitted in ethernet physical layer.

It should be noted that the receiving device that the present invention is implemented can be specially the equipment that can be used as receiving end when carrying out CPRI data and transmitting including the RRU etc. in above-mentioned Remote Radio Unit, simulation feed-in digital signal compartment system or base station digital baseband FD feed compartment system.

Wherein, the data transmission of the Ethernet is the data transmission based on basic frame, and the CPRI frame of needs transmission is the superframe in CPRI agreement, which can be used as a basic frame of Ethernet GE.

The recovery module 22 obtains CPRI frame to be restored for removing the frame head and the IPG of the ethernet frame；

The recovery module 22 is also used to the preset number control word to undelete from the CPRI frame to be restored, and the CPRI frame to be restored is reverted to the CPRI frame before deleting control word.

Optionally, the preset number is that the corresponding current line rate of the CPRI frame transmitted as needed is determined, and the total length for the preset number control word deleted is not less than the sum of the frame head and the total length of the IPG.

Further alternative, the control word of deletion is customized in the CPRI frame for needing to transmit Control word or reserved control word.

In specific embodiment, after the ethernet frame that the sending device that receiving module 21 receives is sent by ethernet netting twine i.e. ethernet physical layer, recovery module 22 can remove the frame head and IPG of the ethernet frame, extract CPRI frame data, and the structure based on CPRI superframe restores the control word of the deletion, restores to obtain deleting the standard CPR I superframe structure before control word.

By taking line rate 1228.8Mbps as an example, the length of the CPRI superframe of the CPRI data format is 8192Byte, consider the total 20Byte of frame head+frame gap, it only needs the control word deletion of 10 of CPRI data format basic frames, total 20Byte, the problem of then avoiding and tie up I/Q data space, CPRI data transmission efficiency is caused to reduce.As shown in Figure 6, it is a kind of structural schematic diagram by deleting control word realization CPRI data transmission provided in an embodiment of the present invention, the frame structure diagram of the ethernet frame (8192Byte) for the ethernet physical layer chip format transmission being converted to after the frame structure diagram, deletion control word of the CPRI superframe (8192Byte) including sending device, that is, transmitting terminal CPRI data format in the Fig. 6 and the frame structure diagram of the CPRI superframe (8192Byte) after receiving device i.e. receiving end recovery control word.Specifically, sending device, that is, transmitting terminal can control the control word (the customized control word that can also delete 10 or more) deleted in 10 basic frames for including customized control word by removing module 11,10 control word CM of the deletion are the CM (therein 2 CM is only shown in Fig. 6) of grey parts in figure, 20Byte altogether, to make up Ethernet frame head+frame gap total 20Byte occupancy, bandwidth compensation is realized.Transmitting terminal is formatted the CPRI frame after the deletion control word by format converting module 12, the basic frame i.e. ethernet frame of ethernet physical layer chip format transmission is obtained after increasing frame head and IPG, and the ethernet frame is sent to by receiving device by sending module 13.After opposite end receiving device, that is, receiving end receives the ethernet frame by receiving module 21, recovery module 22 can remove frame head and IPG, CPRI frame data be extracted, and restore to the control word of deletion, to revert to the CPRI superframe structure of standard.

Equally by taking line rate 1.2288Gbps as an example, in bandwidth shared by CPRI superframe for line rate 1.2288Gbps, control plane amount of occupied bandwidth (i.e. bandwidth shared by control word) are as follows: * 100 (10ms)=61.44Mbps of 2 byte *, 8 bit * 256 (chip chip) * 150 (superframe)；The frame head and IPG of ethernet frame occupy IQ bandwidth (each superframe occupies 20 bytes), amount of occupied bandwidth are as follows: * 100 (10ms)=2.4Mbps of 20 byte *, 8 bit * 150 (superframe)；The frame head and IPG bandwidth of control plane and ethernet frame are removed, Remaining IQ bandwidth is 1228.8M* (4/5) -61.44M-2.4M=919.2Mbps.Therefore, the above behavior example, up direction support most antenna carriers map A*C number are as follows: 919.2M/ [2 (double sampled) * 2 (IQ) * 10 (data bit width) * 256 (chip) * 150 (superframe) * 100 (10ms)]=5 (to go down it is whole after value).Wherein, A is antenna number, and C is carrier number.

At this point, for mobile communication carrier schemes, if necessary to 6 A*C numbers come when indicating a carrier wave, or when needing single cable carrying more multi-carrier data rate, then need using higher data compression ratio, or many netting twines is needed to carry out load sharing.However, then will lead to system performance reduction according to higher data compression ratio；And more ports should can be then occupied in such a way that many netting twines carry out load sharing, increase lower deployment cost.

And the embodiment of the present invention by the deletion control word realize bandwidth compensation when, due to deleting 20Byte control word, it is more that I/Q data has transmitted mostly 20Byte namely IQ bandwidth: * 100 (10ms)=2.4Mbps of 20 byte *, 8 bit * 150 (superframe).The same above behavior example, most A*C numbers that up direction is supported at this time are as follows: (919.2M+2.4M)/[2 (double sampled) * 2 (IQ) * 10 (data bit width) * 256 (chip) * 150 (superframe) * 100 (10ms)]=6 (to go down it is whole after value), the maximum A*C number that uplink and/or down direction are supported can be increased in such a way that the deletion control word realizes bandwidth compensation.For mobile communication carrier schemes, if necessary to 6 A*C numbers come when indicating a carrier wave, or when needing single cable carrying more multi-carrier data rate, network lower deployment cost can effectively reduce.

The embodiment of the present invention is when transmitting CPRI data by ethernet physical layer chip, by deleting part control word in CPRI frame, to no longer tie up I/Q data space when realizing the CPRI data transmission based on GE, make it possible to improve the data transmission efficiency of single cable, single cable is enhanced in the application scenarios of carrier schemes, port occupancy is saved simultaneously and cable uses, and is reduced network lower deployment cost and difficulty of construction, is enhanced system performance.

Fig. 7 is referred to, is the structural schematic diagram of another sending device of the embodiment of the present invention, specifically, the sending device of the embodiment of the present invention includes format converting module 31 and sending module 32.Wherein,

The format converting module 31, for need the CPRI frame that transmits to increase frame head and IPG, obtaining the ethernet frame that can be transmitted in ethernet physical layer, the corresponding clock of the CPRI frame is the first clock；

The sending module 32, for sending the ethernet frame to receiving device in second clock and by the ethernet physical layer, wherein the second clock is greater than first clock.

In specific embodiment, also it can realize that the CPRI data based on Ethernet are transmitted by changing the work clock of ethernet physical layer chip.Specifically, the corresponding work clock of the CPRI frame is the first clock, i.e. the sending device is in the first clock transfer CPRI frame, and the corresponding work clock of the ethernet frame is second clock, i.e. the sending device can send ethernet frame in the second clock by sending module 32, ethernet frame is transmitted by the second clock, which is greater than first clock.

Further, in an alternate embodiment of the invention, the sending device may also include that

The frame length of the ethernet frame is calculated for the frame length, first clock and the second clock according to the CPRI frame in computing module 33；

The computing module 33, is also used to calculate the first difference of the frame length of the ethernet frame and the frame length of the CPRI frame, and calculates the second difference of the sum of first difference and the frame head and the total length of the IPG；

It is grouped determining module 34, second difference for being calculated according to the computing module 33 determines the grouping of ethernet frame when carrying out data transmission；

The sending module 32 can be specifically used for:

Optionally, first clock can be specially 122.88MHz, and the second clock can be specially 125MHz.

In specific embodiment, it is converted by clock domain, namely the work clock (second clock) of control Ethernet is greater than CPRI clock (the first clock), make it possible to transmit more data at the same time, to realize the CPRI data transmission based on Ethernet, and I/Q data space is no longer tied up, so that improving CPRI data transmission efficiency.

Further, when first clock is less than second clock, the difference (i.e. the first difference) of the length of the length and CPRI frame for the ethernet frame being converted to many times is both greater than 20Byte, that is, there are also vacant byte (i.e. the second differences), such as the first clock after having deducted the 20Byte of frame head and IPG is 122.88MHz, when second clock is 125MHz, the difference of the length of the length and CPRI frame of ethernet frame there remains 121.333Byte after deducting 20Byte.Accordingly, it is considered to arrive actual implementation, ethernet frame can be also grouped according to the vacant byte, to transmit ethernet frame based on the grouping.Specifically, the frame length of the frame length of the current CPRI frame of computing module 33, first clock and the corresponding ethernet frame of second clock can be passed through, and the first difference of the frame length of the ethernet frame and the frame length of the CPRI frame is further calculated, and second difference of first difference and the sum of the length of frame head and IPG, enable grouping determining module 34 according to second difference, the grouping of ethernet frame when carrying out data transmission is determined, so that sending module 32 can transmit ethernet frame based on the grouping.

It is the structural schematic diagram of another receiving device provided in an embodiment of the present invention, specifically, the receiving device of the embodiment of the present invention may include receiving module 41 and recovery module 42 please also refer to Fig. 8.Wherein,

The receiving module 41, for receiving the ethernet frame that sending device is sent in second clock and by ethernet physical layer, wherein, the ethernet frame is that the sending device is that the CPRI frame for needing to transmit increases frame head and IPG, the obtained frame that can be transmitted in ethernet physical layer, the corresponding clock of the CPRI frame is the first clock, and the second clock is greater than first clock；

The recovery module 42 obtains the CPRI frame for removing the frame head and the IPG of the ethernet frame.

Specifically, can also realize that the CPRI data based on Ethernet are transmitted by changing the work clock of ethernet physical layer chip.Wherein, the corresponding work clock of the CPRI frame is the first clock, i.e., the sending device can be in the first clock transfer CPRI frame, and the corresponding work clock of the ethernet frame is second clock, i.e. the sending device can send ethernet frame in the second clock, which is greater than first clock.Receiving device receives the ethernet frame of sending device transmission by receiving module 41 in the second clock.

In specific embodiment, after the ethernet frame that the sending device that receiving module 21 receives is sent by ethernet netting twine i.e. ethernet physical layer, recovery module 22 can remove the frame head and IPG and the vacant byte of the ethernet frame, CPRI data are extracted, are restored it as the standard CPR I before transformation clock domain Superframe structure.

Specifically, as shown in Figure 9, it is a kind of structural schematic diagram that the transmission of CPRI data is realized by transformation ethernet physical layer clock provided in an embodiment of the present invention, it include the frame structure diagram of the CPRI superframe (8192Byte) of CPRI data format in sending device, that is, transmitting terminal in the Fig. 9, the CPRI superframe carries out the frame structure diagram of the ethernet frame (8333.333Byte) of the ethernet physical layer chip format obtained after frame format conversion transmission, wherein, corresponding first clock of CPRI frame, that is, CPRI data clock uses 122.88MHz in the sending device, the corresponding second clock of ethernet physical layer, that is, ethernet physical layer clock uses 125MHz.Then speed difference (125-122.88) the * 8=16.96Mbps of the port Ethernet GE and the port CPRI.The length of one CPRI superframe is 8192Byte, then the length of corresponding ethernet physical layer frame, that is, ethernet frame is 8192Byte* (125/122.88)=8333.333Byte, the ethernet frame has more 8333.333-8192=141.333Byte (the first difference) than CPRI superframe correspondence, after deducting the frame head of 20Byte and the length of IPG, the vacant byte of 121.333Byte (the second difference) there remains.As shown in Figure 9, sending device, that is, transmitting terminal is when formatting the superframe (8192Byte) of CPRI data format by format converting module 12, then it can increase frame head, IPG and vacant byte (121.333Byte) for CPRI superframe, to meet the basic frame structure of ethernet physical layer, the basic frame i.e. ethernet frame (8333.333Byte) of ethernet physical layer chip format transmission is converted to, CPRI data are transmitted by ethernet frame to realize.

Further, it is contemplated that actual implementation, sending device can also be according to the vacant byte numbers, i.e., the grouping of ethernet frame when being carried out data transmission according to the length of the difference and frame head of the ethernet frame and the length of CPRI superframe and IPG to determine.It optionally, as shown in Figure 10, is a kind of ethernet frame packet configuration schematic diagram provided in an embodiment of the present invention.Specifically, it is 121.333Byte according to the vacant byte number, then sending device can be using the basic frame of every three Ethernets as one group, as shown in Figure 10, first vacant 122Byte of ethernet frame, the vacant 121Byte of latter two ethernet frame, i.e. in three ethernet frames of the grouping, a length is 8334Byte, and other two length is 8333Byte (in Figure 10, PHY indicates that frame head+IPG, the CPRI data in Fig. 9 are the control word CM+IQ data in Fig. 9).Sending module 32 can send the ethernet frame including CPRI data to receiving device based on the grouping.After receiving device, that is, receiving end receives the ethernet frame of sending device transmission by receiving module 41, the frame head, IPG and the vacant byte of the ethernet frame can be removed by recovery module 42, extract CPRI data, its is extensive Standard CPR I superframe structure before the multiple clock domain for transformation.

In embodiments of the present invention, it can be converted by clock domain, the work clock for controlling Ethernet is greater than CPRI clock, so that more data can be transmitted in same time in ethernet netting twine, such as, ethernet physical layer work clock takes 125MHz, CPRI work clock takes 122.88MHz, for a superframe (the basic frame of Ethernet), the data of 141.333Byte can then be transmitted more, in addition to 20Byte there remains 121.333Byte in total by frame head and IPG, to realize the work clock by converting ethernet physical layer chip to the bandwidth compensation of CPRI frame, and no longer tie up I/Q data space, the CPRI data transmission based on GE is realized without sacrificing IQ bandwidth, solve the problems, such as that CPRI data transmission efficiency is low.

Referring to Figure 11, it is a kind of flow diagram of CPRI data transmission method provided in an embodiment of the present invention, the method for the embodiment of the present invention can be applied particularly in sending device, specifically, the method can comprise the following steps that

S101: sending device deletes preset number control word in the public radio interface CPRI frame for needing to transmit.

It should be noted that, the method that the present invention is implemented can be applied particularly in sending device, which can be specially the equipment that can be used as transmitting terminal when carrying out CPRI data and transmitting including the expanding element etc. in baseband processing unit, simulation feed-in digital signal compartment system or the base station digital baseband FD feed compartment system in above-mentioned Remote Radio Unit.

In specific embodiment, the CPRI frame of needs transmission is the superframe in CPRI agreement, the basic frame that can transmit the superframe as Ethernet data.

S102: the sending device is that the CPRI frame after deleting control word increases frame head and frame gap IPG, obtains the ethernet frame that can be transmitted in ethernet physical layer.

Since the data transmission of the Ethernet is the data transmission based on basic frame, the most basic structure of basic frame, that is, ethernet frame of an ethernet physical layer is frame head (8 bytes)+data+IPG (12 bytes).That is, when CPRI frame, that is, superframe to be converted to the i.e. ethernet frame of frame suitable for ethernet physical layer transmission, encapsulation frame head and IPG be it is essential, this this may result in being more than the basic frame of maximum that ethernet physical layer chip is supported to ethernet frame that the CPRI frame that transmits of needs obtain after frame format conversion Length.Such as, the basic frame of the maximum that the GE physical chip is supported is 10kb, in the case where line rate is 1.2288Gbps, the length of one CPRI superframe is 8192 bytes, just less than 10kb, and be converted to ethernet frame, i.e., plus frame head and IPG after, then more than 10kb, it then will lead to tie up IQ bandwidth at this time.Therefore, before carrying out frame format conversion, the control word of preset number can be deleted, is used for transmission I/Q data in the position of the control word of the deletion, to compensate the bandwidth that the frame head and IPG are occupied, the CPRI data transmission based on GE is realized without sacrificing IQ bandwidth.Wherein, it can be preconfigured fixed number which, which is the number for the control word deleted, such as 20；The number that the needs that the current line rate of the CPRI frame is determined according to or are deleted.

S103: the sending device sends the ethernet frame to receiving device by the ethernet physical layer.

In an alternate embodiment of the invention, which can the number of control word deleted of the current line rate of the CPRI frame is determined according to needs.It, can be with specifically, the sending device deletes preset number control word in the CPRI frame for needing to transmit specifically: sending device obtains the corresponding current line rate of CPRI frame that needs transmit；The sending device is according to the current line rate, determine the number of the control word for needing to need to delete in the CPRI frame transmitted, wherein, the total length of the number control word for needing to delete is not less than the sum of the frame head and the total length of the IPG；The sending device deletes number control word described in the CPRI frame for needing to transmit.

Specifically, the superframe in the CPRI frame, that is, CPRI agreement includes the control word for defining different purposes, for example, synchronization timing, control at a slow speed and manage, producer it is customized etc., further include reserved some control words.Further alternative, the control word of deletion is the customized control word or reserved control word in the CPRI frame for needing to transmit.

In specific embodiment, sending device is deleting preset number control word, to realize to after the CPRI frame i.e. bandwidth compensation of superframe for needing to transmit, frame head and IPG can be increased to the CPRI frame after deletion control word, carry out frame format conversion, to meet the basic frame structure of ethernet physical layer, the ethernet frame that can be transmitted in ethernet netting twine is obtained.Further, which can be sent to receiving device for the ethernet frame by ethernet netting twine, so that receiving device is when receiving the ethernet frame, remove the frame head and IPG of the encapsulation, and restore the control word of the deletion, it obtains deleting the CPRI data before control word, that is, restores For the CPRI frame structure of standard.Caused by so as to avoid CPRI frame is converted to ethernet frame later the case where occupancy IQ bandwidth, CPRI data transmission efficiency is improved.

It is the flow diagram of another kind CPRI data transmission method provided in an embodiment of the present invention, the method for the embodiment of the present invention can be applied particularly in receiving device, specifically, the method can comprise the following steps that please also refer to Figure 12

S201: receiving device receives the ethernet frame that sending device is sent by ethernet physical layer, the ethernet frame is that the sending device deletes preset number control word in the CPRI frame for needing to transmit, and increase frame head and IPG to delete the CPRI frame after control word, the obtained frame that can be transmitted in ethernet physical layer.

It should be noted that, the method that the present invention is implemented can be applied particularly in receiving device, which can be specially the equipment that can be used as receiving end when carrying out CPRI data and transmitting including the RRU etc. in above-mentioned Remote Radio Unit, simulation feed-in digital signal compartment system or base station digital baseband FD feed compartment system.

S202: the receiving device removes the frame head and the IPG of the ethernet frame, obtains CPRI frame to be restored.

S203: the CPRI frame to be restored is reverted to the CPRI frame before deleting control word by the preset number control word that the receiving device undeletes from the CPRI frame to be restored.

Further alternative, the control word of deletion is the customized control word or reserved control word in the CPRI frame for needing to transmit.

In specific embodiment, receiving device is after receiving the ethernet frame that sending device is sent by ethernet netting twine i.e. ethernet physical layer, the frame head and IPG of the ethernet frame can be removed, extract CPRI frame data, and the structure based on CPRI superframe restores the control word of the deletion, restores to obtain deleting the standard CPR I superframe structure before control word.

By taking line rate 1228.8Mbps as an example, the length of the CPRI superframe of the CPRI data format is 8192Byte, considers the total 20Byte of frame head+IPG, it is only necessary to by 10 basic frames of CPRI data format Control word deletion, total 20Byte then avoids and ties up I/Q data space, the problem of causing CPRI data transmission efficiency to reduce.As shown in Figure 6, the controllable control word (or the customized control word for deleting 10 or more) deleted in 10 basic frames for including customized control word of sending device, that is, transmitting terminal, 20Byte altogether realizes bandwidth compensation to make up the occupancy of the total 20Byte of Ethernet frame head+IPG.Sending device formats the CPRI frame after the deletion control word, obtains the basic frame i.e. ethernet frame of ethernet physical layer chip format transmission after increasing frame head and IPG, and the ethernet frame is sent to receiving device.Opposite end receiving device, that is, receiving end can remove frame head and IPG after receiving the ethernet frame, extract CPRI frame data, and restore to the control word of deletion, to revert to the CPRI superframe structure of standard.

Further, referring to Figure 13, it is the flow diagram of another CPRI data transmission method provided in an embodiment of the present invention, the method for the embodiment of the present invention can be applied particularly in sending device, specifically, the method can comprise the following steps that

S301: sending device is that the CPRI frame that transmits is needed to increase frame head and IPG, obtains the ethernet frame that can be transmitted in ethernet physical layer, and the corresponding clock of the CPRI frame is the first clock.

S302: the sending device sends the ethernet frame to receiving device in second clock and by the ethernet physical layer, wherein the second clock is greater than first clock.

In specific embodiment, also it can realize that the CPRI data based on Ethernet are transmitted by changing the work clock of ethernet physical layer chip.Specifically, the corresponding work clock of the CPRI frame is the first clock, i.e. the sending device is in the first clock transfer CPRI frame, and the corresponding work clock of the ethernet frame is second clock, i.e. the sending device can send ethernet frame in the second clock, ethernet frame is transmitted by the second clock, which is greater than first clock.

Further, which can also be according to ethernet frame and CPRI frame after progress clock domain transformation Between vacant byte, determine the grouping of ethernet frame when carrying out data transmission.Specifically, the frame length of the ethernet frame can be calculated according to the frame length, first clock and the second clock of the CPRI frame in the sending device；The first difference of the frame length of the ethernet frame and the frame length of the CPRI frame is calculated, and calculates the second difference of the sum of first difference and the frame head and the total length of the IPG；According to second difference, the grouping of ethernet frame when carrying out data transmission is determined.Then the sending device sends the ethernet frame to receiving device in second clock and by the ethernet physical layer, it can be with specifically: the sending device is based on the grouping, sends the ethernet frame to receiving device in second clock and by the ethernet physical layer.

Specifically, when first clock is less than second clock, the difference (i.e. the first difference) of the length of the length and CPRI frame for the ethernet frame being converted to many times is both greater than 20Byte, that is, there are also vacant byte (i.e. the second differences) after having deducted the 20Byte of frame head and IPG, such as first clock be 122.88MHz, second clock be 125MHz when, the length of the length and CPRI frame of ethernet frame difference deduction 20Byte after there remains 121.333Byte.Accordingly, it is considered to arrive actual implementation, ethernet frame can be also grouped according to the vacant byte, sending device then can transmit ethernet frame based on the grouping.

It further, is the flow diagram of another CPRI data transmission method provided in an embodiment of the present invention, the method for the embodiment of the present invention can be applied particularly in receiving device, specifically, the method can comprise the following steps that please also refer to Figure 14

S401: receiving device receives the ethernet frame that sending device is sent in second clock and by ethernet physical layer, wherein, the ethernet frame is that the sending device is that the CPRI frame for needing to transmit increases frame head and IPG, the obtained frame that can be transmitted in ethernet physical layer, the corresponding clock of the CPRI frame is the first clock, and the second clock is greater than first clock.

S402: the receiving device removes the frame head and the IPG of the ethernet frame, obtains the CPRI frame.

Specifically, can also realize that the CPRI data based on Ethernet are transmitted by changing the work clock of ethernet physical layer chip.Wherein, the corresponding work clock of the CPRI frame is the first clock, the i.e. transmission Equipment can be in the first clock transfer CPRI frame, and the corresponding work clock of the ethernet frame is second clock, i.e., the sending device can send ethernet frame in the second clock, which is greater than first clock.Receiving device can receive the ethernet frame that the sending device is sent in the second clock.

In specific embodiment, receiving device is after receiving the ethernet frame that sending device is sent by ethernet netting twine i.e. ethernet physical layer, the frame head and IPG of the ethernet frame can be removed, and remove the vacant byte, to extract CPRI data, the structure of the CPRI data is reverted into the standard CPR I superframe structure before converting clock domain to get the CPRI frame for arriving first clock.

Specifically, the corresponding second clock of ethernet physical layer, that is, ethernet physical layer clock uses 125MHz as shown in figure 9, corresponding first clock of CPRI frame, that is, CPRI data clock uses 122.88MHz in the sending device.Then speed difference (125-122.88) the * 8=16.96Mbps of the port Ethernet GE and the port CPRI.The length of one CPRI superframe is 8192Byte, then the length of corresponding ethernet physical layer frame, that is, ethernet frame is 8192Byte* (125/122.88)=8333.333Byte, the ethernet frame has more 8333.333-8192=141.333Byte (the first difference) than CPRI superframe correspondence, after deducting the frame head of 20Byte and the length of IPG, the vacant byte of 121.333Byte (the second difference) there remains.As shown in Figure 9, sending device, that is, transmitting terminal is when the superframe (8192Byte) to CPRI data format formats, increase frame head, IPG and vacant byte (121.333Byte) for CPRI superframe, to meet the basic frame structure of ethernet physical layer, the basic frame i.e. ethernet frame (8333.333Byte) of ethernet physical layer chip format transmission is converted to, CPRI data are transmitted by ethernet frame to realize.

Further, it is contemplated that actual implementation, sending device can also be according to the vacant byte numbers, i.e., the grouping of ethernet frame when being carried out data transmission according to the length of the difference and frame head of the ethernet frame and the length of CPRI superframe and IPG to determine.Specifically, it is 121.333Byte according to the vacant byte number, sending device can be using the basic frame of every three Ethernets as one group, as shown in Figure 10, first vacant 122Byte of ethernet frame, the vacant 121Byte of latter two ethernet frame, i.e., in the three of the grouping ethernet frame, one length is 8334Byte, and other two length is 8333Byte.Sending device can send the ethernet frame including CPRI data to receiving device based on the grouping.Receiving device, that is, receiving end receives sending device transmission Ethernet frame after, the frame head and IPG of the ethernet frame can be removed, and remove the vacant byte, extract CPRI data, by the structure of the CPRI data revert to transformation clock domain before standard CPR I superframe structure.

In embodiments of the present invention, it can be converted by clock domain, the work clock for controlling Ethernet is greater than CPRI clock, so that more data can be transmitted in same time in ethernet netting twine, such as, ethernet physical layer work clock takes 125MHz, CPRI work clock takes 122.88MHz, for a superframe (the basic frame of Ethernet), the data of 141.333Byte can then be transmitted more, in addition to 20Byte there remains 121.333Byte in total by frame head and IPG, to realize the work clock by converting ethernet physical layer chip to the bandwidth compensation of CPRI frame, and no longer tie up I/Q data space, the CPRI data transmission based on GE is realized without sacrificing IQ bandwidth, improve CPRI data transmission efficiency.

Further, referring to Figure 15, it is the structural schematic diagram of another sending device provided in an embodiment of the present invention, the sending device of the embodiment of the present invention includes: receiver 300, transmitter 400, memory 200 and processor 100, the memory 200 can be high speed RAM memory, it is also possible to non-labile memory (non-volatile memory), for example, at least a magnetic disk storage.As storing corresponding application program etc. in a kind of memory 200 of computer storage medium.Data connection can be carried out by bus between the receiver 300, transmitter 400, memory 200 and processor 100, it can also data connection by other means.It is illustrated in the present embodiment with bus connection.

Wherein, the processor 100 executes following steps:

The ethernet frame is sent to receiving device based on the transmitter 400, and by the ethernet physical layer.

Specifically, the CPRI frame of needs transmission is the superframe in CPRI agreement.The preset number is that the number for the control word deleted can be preconfigured fixed number, can the current line rate of the CPRI frame is determined according to number, etc..

Optionally, the processor 100 preset number in executing the CPRI frame deleted and need to transmit A control word, specifically executes following steps:

Delete number control word described in the CPRI frame for needing to transmit.

Specifically, the superframe in the CPRI frame, that is, CPRI agreement includes the control word for defining different purposes, for example, synchronization timing, control at a slow speed and manage, producer it is customized etc., further include reserved some control words.Optionally, the control word of deletion is the customized control word or reserved control word in the CPRI frame for needing to transmit.

Further, referring to Figure 16, it is the structural schematic diagram of another sending device provided in an embodiment of the present invention, the sending device of the embodiment of the present invention includes: receiver 700, transmitter 800, memory 600 and processor 500, the memory 600 can be high speed RAM memory, it is also possible to non-labile memory (non-volatile memory), for example, at least a magnetic disk storage.As storing corresponding application program etc. in a kind of memory 600 of computer storage medium.Data connection can be carried out by bus between the receiver 700, transmitter 800, memory 600 and processor 500, it can also data connection by other means.It is illustrated in the present embodiment with bus connection.

Wherein, the processor 500 executes following steps:

Based on the transmitter 800, the ethernet frame is sent to receiving device in second clock and by the ethernet physical layer, wherein the second clock is greater than first clock.

Optionally, the processor 500 is also used to execute following steps:

The first difference of the frame length of the ethernet frame and the frame length of the CPRI frame is calculated, and calculates the second difference of the sum of first difference and the frame head and the total length of the IPG；

The processor 500 sends the ethernet frame to receiving device in second clock and by the ethernet physical layer executing described, specifically executes following steps:

Optionally, first clock is 122.88MHz, and the second clock is 125MHz.

Referring to Figure 17, it is the structural schematic diagram of another receiving device provided in an embodiment of the present invention, the receiving device of the embodiment of the present invention includes: receiver 1100, transmitter 1200, memory 1000 and processor 900, the memory 1000 can be high speed RAM memory, it is also possible to non-labile memory (non-volatile memory), for example, at least a magnetic disk storage.As storing corresponding application program etc. in a kind of memory 1000 of computer storage medium.Data connection can be carried out by bus between the receiver 1100, transmitter 1200, memory 1000 and processor 900, it can also data connection by other means.It is illustrated in the present embodiment with bus connection.

Wherein, the processor 900 executes following steps:

Based on the receiver 1100, and the ethernet frame that sending device is sent is received by ethernet physical layer, the ethernet frame is that the sending device deletes preset number control word in the CPRI frame for needing to transmit, and increase frame head and IPG to delete the CPRI frame after control word, the obtained frame that can be transmitted in ethernet physical layer；

Further, referring to Figure 18, it is the structural schematic diagram of another receiving device provided in an embodiment of the present invention, the receiving device of the embodiment of the present invention includes: receiver 1500, transmitter 1600, memory 1400 and processor 1300, the memory 1400 can be high speed RAM memory, it is also possible to non-labile memory (non-volatile memory), for example, at least a magnetic disk storage.As storing corresponding application program etc. in a kind of memory 1400 of computer storage medium.Data connection can be carried out by bus between the receiver 1500, transmitter 1600, memory 1400 and processor 1300, it can also data connection by other means.It is illustrated in the present embodiment with bus connection.

Wherein, the processor 1300 executes following steps:

Based on the receiver 1500, the ethernet frame that sending device is sent is received in second clock and by ethernet physical layer, wherein, the ethernet frame is that the sending device is that the CPRI frame for needing to transmit increases frame head and IPG, the obtained frame that can be transmitted in ethernet physical layer, the corresponding clock of the CPRI frame is the first clock, and the second clock is greater than first clock；

Specifically, can also realize that the CPRI data based on Ethernet are transmitted by changing the work clock of ethernet physical layer chip.Wherein, the corresponding work clock of the CPRI frame is the first clock, i.e., the sending device can be in the first clock transfer CPRI frame, and the corresponding work clock of the ethernet frame is second clock, i.e. the sending device can send ethernet frame in the second clock, which is greater than first clock. Receiving device can receive the ethernet frame that the sending device is sent in the second clock, and it can be after receiving the ethernet frame, the frame head and IPG for removing the ethernet frame, extract CPRI data, restore it as the standard CPR I superframe structure before transformation clock domain.

Further, referring to Figure 19, be a kind of structural schematic diagram of CPRI data transmission system provided in an embodiment of the present invention, specifically, the embodiment of the present invention the system comprises sending device 1 and receiving devices 2, wherein

The sending device 1, for deleting preset number control word in the public radio interface CPRI frame for needing to transmit；Increase frame head and frame gap IPG to delete the CPRI frame after control word, obtains the ethernet frame that can be transmitted in ethernet physical layer；The ethernet frame is sent to the receiving device 2 by the ethernet physical layer；

The receiving device 2, for receiving the ethernet frame that the sending device 1 is sent by the ethernet physical layer；The frame head and the IPG for removing the ethernet frame, obtain CPRI frame to be restored；The CPRI frame to be restored is reverted to the CPRI frame before deleting control word by the preset number control word to undelete from the CPRI frame to be restored.

Specifically, the CPRI frame of needs transmission is the superframe in CPRI agreement, which can be used as a basic frame of Ethernet data transmission.

Further, refer to Figure 20, be the structural schematic diagram of another kind CPRI data transmission system provided in an embodiment of the present invention, specifically, the embodiment of the present invention the system comprises sending device 1 and receiving devices 2, wherein

The sending device 1, for need the CPRI frame that transmits to increase frame head and IPG, obtaining the ethernet frame that can be transmitted in ethernet physical layer, the corresponding clock of the CPRI frame is the first clock；The ethernet frame is sent to the receiving device 2 in second clock and by the ethernet physical layer, wherein the second clock is greater than first clock；

The receiving device 2, for receiving the ethernet frame that the sending device 1 is sent in the second clock and by the ethernet physical layer；The frame head and the IPG for removing the ethernet frame, obtain the CPRI frame.

Further, also the frame length of the ethernet frame can be calculated according to the frame length, first clock and the second clock of the CPRI frame in the sending device；The first difference of the frame length of the ethernet frame and the frame length of the CPRI frame is calculated, and calculates the second difference of the sum of first difference and the frame head and the total length of the IPG；According to second difference, the grouping of ethernet frame when carrying out data transmission is determined.To which sending device can be based on the grouping, the ethernet frame is sent to receiving device in second clock and by the ethernet physical layer.

In embodiments of the present invention, it can be converted by clock domain, the work clock for controlling Ethernet is greater than CPRI clock, so that more data can be transmitted in same time in ethernet netting twine, for example, Ethernet object Reason layer work clock takes 125MHz, CPRI work clock takes 122.88MHz, for a superframe (the basic frame of Ethernet), the data of 141.333Byte can then be transmitted more, in addition to 20Byte there remains 121.333Byte in total by frame head and IPG, to realize the work clock by converting ethernet physical layer chip to the bandwidth compensation of CPRI frame, and I/Q data space is no longer tied up, the CPRI data transmission based on GE is realized without sacrificing IQ bandwidth, improves CPRI data transmission efficiency.

In the above-described embodiments, it all emphasizes particularly on different fields to the description of each embodiment, there is no the part being described in detail in some embodiment, reference can be made to the related descriptions of other embodiments.

In several embodiments provided by the present invention, it should be understood that disclosed device and method may be implemented in other ways.Such as, the apparatus embodiments described above are merely exemplary, such as, the division of the unit, only a kind of logical function partition, there may be another division manner in actual implementation, such as multiple units or components can be combined or can be integrated into another system, or some features can be ignored or not executed.Another point, shown or discussed mutual coupling, direct-coupling or communication connection can be through some interfaces, the indirect coupling or communication connection of device or unit, can be electrical property, mechanical or other forms.

It is described this unit may or may not be physically separated as illustrated by the separation member, component shown as a unit may or may not be physical unit, it can in one place, or may be distributed over multiple network units.It can some or all of the units may be selected to achieve the purpose of the solution of this embodiment according to the actual needs.

In addition, the functional units in various embodiments of the present invention may be integrated into one processing unit, it is also possible to each unit and physically exists alone, can also be integrated in one unit with two or more units.Above-mentioned integrated unit both can take the form of hardware realization, can also realize in the form of hardware adds SFU software functional unit.

The above-mentioned integrated unit being realized in the form of SFU software functional unit, can store in a computer readable storage medium.Above-mentioned SFU software functional unit is stored in a storage medium, it uses including some instructions so that a computer equipment (can be personal computer, server or the network equipment etc.) or processor (processor) execute the part steps of each embodiment the method for the present invention.And storage medium above-mentioned include: USB flash disk, it is mobile hard disk, read-only memory (Read-Only Memory, ROM), random Access the various media that can store program code such as memory (Random Access Memory, RAM), magnetic or disk.

Those skilled in the art can be understood that, for convenience and simplicity of description, only the example of the division of the above functional modules, in practical application, it can according to need and be completed by different functional modules above-mentioned function distribution, the internal structure of device is divided into different functional modules, to complete all or part of the functions described above.The specific work process of the device of foregoing description, can refer to corresponding processes in the foregoing method embodiment, and details are not described herein.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；Although present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: it is still possible to modify the technical solutions described in the foregoing embodiments, or equivalent substitution of some or all of the technical features；And these are modified or replaceed, the range for technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution.

Claims

A kind of sending device characterized by comprising

Removing module, for deleting preset number control word in the public radio interface CPRI frame for needing to transmit；

Format converting module obtains the ethernet frame that can be transmitted in ethernet physical layer for increasing frame head and frame gap IPG for the CPRI frame after removing module deletion control word；

Sending module, for sending the ethernet frame to receiving device by the ethernet physical layer.
Sending device according to claim 1, which is characterized in that the removing module includes:

Acquiring unit, for obtaining the corresponding current line rate of CPRI frame for needing to transmit；

Number decision unit, the current line rate for being obtained according to the acquiring unit, determine the number of the control word for needing to need to delete in the CPRI frame transmitted, wherein, the total length of the number control word for needing to delete is not less than the sum of the frame head and the total length of the IPG；

Data delete unit, for deleting the number control word for needing number decision unit described in the CPRI frame transmitted to determine.
Sending device according to claim 1 or 2, which is characterized in that the control word of deletion is the customized control word or reserved control word in the CPRI frame for needing to transmit.
A kind of sending device characterized by comprising

Format converting module, for need the common public radio interface CPRI frame that transmits to increase frame head and frame gap IPG, obtaining the ethernet frame that can be transmitted in ethernet physical layer, the corresponding clock of the CPRI frame is the first clock；

Sending module, for sending the ethernet frame to receiving device in second clock and by the ethernet physical layer, wherein the second clock is greater than first clock.
Sending device according to claim 4, which is characterized in that the sending device further include:

The frame length of the ethernet frame is calculated for the frame length, first clock and the second clock according to the CPRI frame in computing module；

The computing module, is also used to calculate the first difference of the frame length of the ethernet frame and the frame length of the CPRI frame, and calculates the second difference of the sum of first difference and the frame head and the total length of the IPG；

It is grouped determining module, second difference for being calculated according to the computing module determines the grouping of ethernet frame when carrying out data transmission；

The sending module is specifically used for:

Based on the grouping, the ethernet frame is sent to receiving device in second clock and by the ethernet physical layer.
Sending device according to claim 4 or 5, which is characterized in that first clock is 122.88MHz, and the second clock is 125MHz.
A kind of receiving device characterized by comprising

Receiving module, for receiving the ethernet frame that sending device is sent by ethernet physical layer, the ethernet frame is that the sending device deletes preset number control word in the common public radio interface CPRI frame for needing to transmit, and increase frame head and frame gap IPG to delete the CPRI frame after control word, the obtained frame that can be transmitted in ethernet physical layer；

Recovery module obtains CPRI frame to be restored for removing the frame head and the IPG of the ethernet frame；

The recovery module is also used to the preset number control word to undelete from the CPRI frame to be restored, and the CPRI frame to be restored is reverted to the CPRI frame before deleting control word.
Receiving device according to claim 7, which is characterized in that the preset number is that the corresponding current line rate of the CPRI frame transmitted as needed is determined, and the preset number deleted is a The total length of control word is not less than the sum of the frame head and the total length of the IPG.
Receiving device according to claim 7 or 8, which is characterized in that the control word of deletion is the customized control word or reserved control word in the CPRI frame for needing to transmit.
A kind of receiving device characterized by comprising

Receiving module, for receiving the ethernet frame that sending device is sent in second clock and by ethernet physical layer, wherein, the ethernet frame is that the sending device is that the common public radio interface CPRI frame for needing to transmit increases frame head and frame gap IPG, the obtained frame that can be transmitted in ethernet physical layer, the corresponding clock of the CPRI frame is the first clock, and the second clock is greater than first clock；

Recovery module obtains the CPRI frame for removing the frame head and the IPG of the ethernet frame.
Receiving device according to claim 10, which is characterized in that first clock is 122.88MHz, and the second clock is 125MHz.
A kind of common public radio interface CPRI data transmission method characterized by comprising

Sending device deletes preset number control word in the public radio interface CPRI frame for needing to transmit；

The sending device is that the CPRI frame after deleting control word increases frame head and frame gap IPG, obtains the ethernet frame that can be transmitted in ethernet physical layer；

The sending device sends the ethernet frame to receiving device by the ethernet physical layer.
According to the method for claim 12, which is characterized in that the sending device deletes preset number control word in the CPRI frame for needing to transmit, comprising:

Sending device obtains the corresponding current line rate of CPRI frame for needing to transmit；

The sending device determines the number of the control word for needing to need to delete in the CPRI frame transmitted according to the current line rate, wherein the total length of the number control word for needing to delete is not Less than the sum of the frame head and the total length of the IPG；

The sending device deletes number control word described in the CPRI frame for needing to transmit.
Method according to claim 12 or 13, which is characterized in that the control word of deletion is the customized control word or reserved control word in the CPRI frame for needing to transmit.
A kind of common public radio interface CPRI data transmission method characterized by comprising

Sending device is that the CPRI frame that transmits is needed to increase frame head and frame gap IPG, obtains the ethernet frame that can be transmitted in ethernet physical layer, and the corresponding clock of the CPRI frame is the first clock；

The sending device sends the ethernet frame to receiving device in second clock and by the ethernet physical layer, wherein the second clock is greater than first clock.
According to the method for claim 15, which is characterized in that the method also includes:

The frame length of the ethernet frame is calculated according to the frame length, first clock and the second clock of the CPRI frame in the sending device；

The sending device calculates the first difference of the frame length of the ethernet frame and the frame length of the CPRI frame, and calculates the second difference of the sum of first difference and the frame head and the total length of the IPG；

The sending device determines the grouping of ethernet frame when carrying out data transmission according to second difference；

The sending device sends the ethernet frame to receiving device in second clock and by the ethernet physical layer, comprising:

The sending device is based on the grouping, sends the ethernet frame to receiving device in second clock and by the ethernet physical layer.
Method according to claim 15 or 16, which is characterized in that first clock is 122.88MHz, and the second clock is 125MHz.
A kind of common public radio interface CPRI data transmission method characterized by comprising

Receiving device receives the ethernet frame that sending device is sent by ethernet physical layer, the ethernet frame is that the sending device deletes preset number control word in the CPRI frame for needing to transmit, and increase frame head and frame gap IPG to delete the CPRI frame after control word, the obtained frame that can be transmitted in ethernet physical layer；

The receiving device removes the frame head and the IPG of the ethernet frame, obtains CPRI frame to be restored；

The CPRI frame to be restored is reverted to the CPRI frame before deleting control word by the preset number control word that the receiving device undeletes from the CPRI frame to be restored.
According to the method for claim 18, it is characterized in that, the preset number is that the corresponding current line rate of the CPRI frame transmitted as needed is determined, and the total length for the preset number control word deleted is not less than the sum of the frame head and the total length of the IPG.
Method described in 8 or 19 according to claim 1, which is characterized in that the control word of deletion is the customized control word or reserved control word in the CPRI frame for needing to transmit.
A kind of common public radio interface CPRI data transmission method characterized by comprising

Receiving device receives the ethernet frame that sending device is sent in second clock and by ethernet physical layer, wherein, the ethernet frame is that the sending device is that the CPRI frame for needing to transmit increases frame head and frame gap IPG, the obtained frame that can be transmitted in ethernet physical layer, the corresponding clock of the CPRI frame is the first clock, and the second clock is greater than first clock；

The receiving device removes the frame head and the IPG of the ethernet frame, obtains the CPRI frame.
According to the method for claim 21, which is characterized in that first clock is 122.88MHz, and the second clock is 125MHz.
A kind of computer storage medium, which is characterized in that the computer storage medium is stored with program, It include such as claim 12-14 described in any item method and steps when described program executes.
A kind of computer storage medium, which is characterized in that the computer storage medium is stored with program, includes such as claim 15-17 described in any item method and steps when described program executes.
A kind of computer storage medium, which is characterized in that the computer storage medium is stored with program, includes such as claim 18-20 described in any item method and steps when described program executes.
A kind of computer storage medium, which is characterized in that the computer storage medium is stored with program, includes such as claim 21-22 described in any item method and steps when described program executes.
A kind of sending device characterized by comprising transmitter, receiver, memory and processor,

Wherein, the processor executes following steps:

Delete preset number control word in the public radio interface CPRI frame for needing to transmit；

Increase frame head and frame gap IPG to delete the CPRI frame after control word, obtains the ethernet frame that can be transmitted in ethernet physical layer；

The ethernet frame is sent to receiving device based on the transmitter, and by the ethernet physical layer.
Sending device according to claim 27, which is characterized in that processor preset number control word in executing the CPRI frame deleted and need to transmit specifically executes following steps:

Obtain the corresponding current line rate of CPRI frame for needing to transmit；

According to the current line rate, the number of the control word for needing to need to delete in the CPRI frame transmitted is determined, wherein the total length of the number control word for needing to delete is not less than the sum of the frame head and the total length of the IPG；

Delete number control word described in the CPRI frame for needing to transmit.
The sending device according to claim 27 or 28, which is characterized in that the control word of deletion is the customized control word or reserved control word in the CPRI frame for needing to transmit.
A kind of sending device characterized by comprising transmitter, receiver, memory and processor,

Wherein, the processor executes following steps:

To need the common public radio interface CPRI frame that transmits to increase frame head and frame gap IPG, the ethernet frame that can be transmitted in ethernet physical layer is obtained, the corresponding clock of the CPRI frame is the first clock；

Based on the transmitter, the ethernet frame is sent to receiving device in second clock and by the ethernet physical layer, wherein the second clock is greater than first clock.
Sending device according to claim 30, which is characterized in that the processor is also used to execute following steps:

According to the frame length of the CPRI frame, first clock and the second clock, the frame length of the ethernet frame is calculated；

The first difference of the frame length of the ethernet frame and the frame length of the CPRI frame is calculated, and calculates the second difference of the sum of first difference and the frame head and the total length of the IPG；

According to second difference, the grouping of ethernet frame when carrying out data transmission is determined；

The processor sends the ethernet frame to receiving device in second clock and by the ethernet physical layer executing described, specifically executes following steps:

Based on the grouping, the ethernet frame is sent to receiving device in second clock and by the ethernet physical layer.
The sending device according to claim 30 or 31, which is characterized in that first clock is 122.88MHz, and the second clock is 125MHz.
A kind of receiving device characterized by comprising transmitter, receiver, memory and processor,

Wherein, the processor executes following steps:

Based on the receiver, and the ethernet frame that sending device is sent is received by ethernet physical layer, the ethernet frame is that the sending device deletes preset number control word in the common public radio interface CPRI frame for needing to transmit, and increase frame head and frame gap IPG to delete the CPRI frame after control word, the obtained frame that can be transmitted in ethernet physical layer；

The frame head and the IPG for removing the ethernet frame, obtain CPRI frame to be restored；

The CPRI frame to be restored is reverted to the CPRI frame before deleting control word by the preset number control word to undelete from the CPRI frame to be restored.
Receiving device according to claim 33, it is characterized in that, the preset number is that the corresponding current line rate of the CPRI frame transmitted as needed is determined, and the total length for the preset number control word deleted is not less than the sum of the frame head and the total length of the IPG.
The receiving device according to claim 33 or 34, which is characterized in that the control word of deletion is the customized control word or reserved control word in the CPRI frame for needing to transmit.
A kind of receiving device characterized by comprising transmitter, receiver, memory and processor,

Wherein, the processor executes following steps:

Based on the receiver, the ethernet frame that sending device is sent is received in second clock and by ethernet physical layer, wherein, the ethernet frame is that the sending device is that the common public radio interface CPRI frame for needing to transmit increases frame head and frame gap IPG, the obtained frame that can be transmitted in ethernet physical layer, the corresponding clock of the CPRI frame is the first clock, and the second clock is greater than first clock；

The frame head and the IPG for removing the ethernet frame, obtain the CPRI frame.
Receiving device according to claim 36, which is characterized in that first clock is 122.88MHz, and the second clock is 125MHz.
A kind of common public radio interface CPRI data transmission system characterized by comprising sending device and receiving device, wherein

The sending device, for deleting preset number control word in the public radio interface CPRI frame for needing to transmit；Increase frame head and frame gap IPG to delete the CPRI frame after control word, obtains the ethernet frame that can be transmitted in ethernet physical layer；The ethernet frame is sent to the receiving device by the ethernet physical layer；

The receiving device, for receiving the ethernet frame that the sending device is sent by the ethernet physical layer；The frame head and the IPG for removing the ethernet frame, obtain CPRI frame to be restored；The CPRI frame to be restored is reverted to the CPRI frame before deleting control word by the preset number control word to undelete from the CPRI frame to be restored.
A kind of common public radio interface CPRI data transmission system characterized by comprising sending device and receiving device, wherein

The sending device, for need the CPRI frame that transmits to increase frame head and frame gap IPG, obtaining the ethernet frame that can be transmitted in ethernet physical layer, the corresponding clock of the CPRI frame is the first clock；The ethernet frame is sent to the receiving device in second clock and by the ethernet physical layer, wherein the second clock is greater than first clock；

The receiving device, for receiving the ethernet frame that the sending device is sent in the second clock and by the ethernet physical layer；The frame head and the IPG for removing the ethernet frame, obtain the CPRI frame.