WO2019000884A1 - Multi-standard hybrid networking transmission system based on cpri architecture and transmission method thereof - Google Patents

Abstract

The present invention relates to a multi-standard hybrid networking transmission system based on a CPRI architecture and a transmission method thereof. The multi-standard hybrid networking transmission system based on a CPRI architecture comprises a first-standard radio equipment controller and a second-standard radio equipment controller connected to the first-standard radio equipment controller; the first-standard radio equipment controller and the second-standard radio equipment controller being respectively connected to corresponding radio equipment. The present invention provides, based on dual standard radio equipment controllers, an independent backup topology structure, such that the two standards are completely independent; the present invention is based on an interactive communication connection between the radio equipment controllers, and communication connections between the radio equipment controllers and radio equipment, such that the present invention can independently map, according to respective characteristics of different standards, IQ data of the different standards to IQ blocks of a CPRI protocol for unified transmission. Thus, the invention realizes hybrid transmission of multi-standard signals.

Description

Multi-system hybrid network transmission system and transmission method based on CPRI architecture Technical field

The present invention relates to a data transmission technology in mobile communication, and in particular to a multi-standard hybrid network transmission system and a transmission method based on a CPRI (Commo Public Radio Interface) architecture.

Background technique

With the development of mobile communication, the number of mobile communication users has also increased dramatically. Operators have to expand the mobile communication system to meet the different communication needs of different users. Nowadays, in some coverage scenarios, mobile operators urgently need to use 2G (2-Generation wireless telephone technology) signals, 3G (3rd-Generation) signals, 4G (the 4th Generation mobile communication technology) signals, and WLAN (Wireless Local Area Networks) signals. Perform signal coverage.

In the implementation process, the inventor found that at least the following problems exist in the conventional technology: when the traditional technology is concerned with the problem of requiring multiple signal coverage, the operator construction cost and the post-maintenance cost are high, and often only 2G one independent device, 3G is often performed. Coverage of one independent device, one independent device of 4G, and one independent device of WLAN cannot realize one device to complete coverage of multiple signals, and cannot transmit multi-standard composite signals.

Summary of the invention

Based on this, it is necessary to realize that a device can complete multiple signal coverage and cannot perform multi-standard composite signal transmission for a conventional technology, and provide a multi-system hybrid network transmission system and transmission method based on CPRI architecture.

In order to achieve the above object, an embodiment of the technical solution of the present invention is:

In one aspect, a multi-system hybrid network transmission system based on a CPRI architecture is provided, including a first-system near-end machine, a second-system near-end machine connected to the first-system near-end machine; and a first-system near-end machine, The two-system proximal end machine is respectively connected with the corresponding remote machines;

The first-system near-end machine and the second-system near-end machine mutually acquire downlink data of each network system received by the other party; the first-standard near-end machine and the second-standard near-end machine separately receive and acquire downlink data of each network standard Performing the combined processing, and transmitting the obtained downlink data to the corresponding remote machine; the remote machine performs data separation after receiving the combined downlink data, and then sends the data;

The remote machine performs combined processing on the local data and the received uplink data of each network standard, and transmits the obtained combined uplink data to the corresponding first-standard near-end machine and the second-standard near-end machine; The near-end machine and the second-type near-end machine separately separate and transmit the received uplink data after the combined according to the respective systems, and mutually acquire the uplink data received by the other party; the first-standard near-end machine, The second-standard near-end machine separately separates and transmits the acquired uplink data according to the respective systems according to the respective standards.

In another aspect, a multi-standard hybrid networking transmission method based on a CPRI architecture implemented from a first-system near-end machine perspective is provided, including uplink transmission and downlink transmission;

The downlink transmission includes the following steps:

Receiving the first part of the network standard downlink data, and mutually acquiring the second part of the network standard downlink data received by the second standard near-end machine;

Performing combined processing on the downlink data of the first part of the network standard and the downlink data of the second part of the network standard to obtain downlink data after combining;

Transfer the downlink data after the combination to the corresponding remote machine;

The uplink transmission includes the following steps:

Performing data separation on the uplink data after the combined transmission of the remote device, and transmitting the first part of the network standard uplink data;

Sending the combined uplink data transmitted by the remote machine to the second-standard near-end machine, and acquiring the uplink data after the combined remote-machine transmission received by the second-type near-end machine;

Data is separated from the combined uplink data transmitted by the second-standard near-end machine, and the first part of the network standard uplink data is sent.

On the other hand, a multi-standard hybrid networking transmission method based on CPRI architecture implemented from a second-standard near-end machine perspective is provided, including uplink transmission and downlink transmission;

The downlink transmission includes the following steps:

Receiving the second part of the network standard downlink data, and mutually acquiring the first part of the network standard downlink data received by the first-standard near-end machine;

Performing combined processing on the downlink data of the first part of the network standard and the downlink data of the second part of the network standard to obtain downlink data after combining;

Transfer the downlink data after the combination to the corresponding remote machine;

The uplink transmission includes the following steps:

Performing data separation on the uplink data after the combined transmission of the remote machine, and transmitting the second part of the network standard uplink data;

Sending the combined uplink data transmitted by the remote device to the first-standard near-end machine, and acquiring the uplink data after the combined remote-machine transmission received by the first-standard near-end machine;

Data is separated from the combined uplink data transmitted by the first-system near-end machine, and the second part of the network standard uplink data is transmitted.

The above technical solution has the following beneficial effects:

The invention relates to a multi-system hybrid network transmission system and a transmission method based on a CPRI architecture, and provides an independent backup topology structure based on dual near-end machines (a first-system near-end machine and a second-system near-end machine), so that the two systems are completely independent. Based on the interactive communication connection between the near-end machines and the communication connection between the near-end machine and the remote machine, the present invention can use different system IQ (In-Phase Quadrature) data according to the respective system characteristics. Each of them is independently mapped to the IQ block of the CPRI protocol for unified transmission, and multi-standard signal hybrid transmission is realized. Each system has an independent near-end device, and signal interactions of different standards interact through interactive communication links to improve system reliability. Based on the invention, the IQblock can be used in the CPRI to open up the independent bandwidth transmission network port signal, and the device directly provides the external expansion network interface and transmits the wireless network standard signal. The invention can encapsulate a plurality of different signals into the CPRI protocol to realize multi-standard transparent transmission, and based on the multi-standard RRU (Radio Remote Unit), the digital multi-standard I/ of the RRU is transmitted through the large-capacity optical fiber. Q data can solve the simultaneous coverage of multiple signals such as 2G, 3G/4G, WLAN, etc., and minimize the operator's construction cost and post-maintenance cost to meet the communication requirements of today's mobile communication users.

DRAWINGS

1 is a schematic structural diagram of Embodiment 1 of a multi-system hybrid networking transmission system based on a CPRI architecture according to the present invention;

2 is a schematic structural diagram of a service communication link in a multi-system hybrid networking transmission system based on a CPRI architecture according to the present invention;

3 is a schematic diagram of a downlink frame of a W in a multi-standard hybrid network transmission system based on a CPRI architecture according to the present invention;

4 is a schematic diagram of W uplink framing in a multi-standard hybrid networking transmission system based on a CPRI architecture according to the present invention;

5 is a schematic diagram of a G downlink framing in a multi-standard hybrid networking transmission system based on a CPRI architecture according to the present invention;

6 is a schematic diagram of G uplink framing in a multi-standard hybrid networking transmission system based on a CPRI architecture according to the present invention;

7 is a schematic diagram of frame alignment in a multi-system hybrid networking transmission system based on a CPRI architecture according to the present invention;

8 is a schematic diagram of a basic frame structure in a multi-system hybrid networking transmission system based on a CPRI architecture according to the present invention;

9 is a schematic structural diagram of a 2*TD-SCDMA+2*GSM+WLAN basic frame and a 3*TD-SCDMA+1*GSM+WLAN basic frame in a multi-system hybrid network transmission system based on a CPRI architecture;

10 is a schematic diagram of output to a serdes clock domain in a multi-system hybrid networking transmission system based on a CPRI architecture according to the present invention;

11 is a schematic diagram of a serdes output clock domain in a multi-system hybrid networking transmission system based on a CPRI architecture according to the present invention;

12 is a schematic diagram of a working process of a frame splitting module in a multi-system hybrid networking transmission system based on a CPRI architecture according to the present invention;

13 is a schematic diagram of W downlink de-frameping in a multi-system hybrid networking transmission system based on a CPRI architecture according to the present invention;

14 is a schematic diagram of W uplink deframing in a multi-system hybrid networking transmission system based on a CPRI architecture according to the present invention;

15 is a schematic diagram of G downlink de-frameping in a multi-system hybrid networking transmission system based on a CPRI architecture according to the present invention;

16 is a schematic diagram of G uplink deframing in a multi-system hybrid networking transmission system based on a CPRI architecture according to the present invention;

17 is a schematic diagram of transmission of an interactive communication link based on a first interaction port X and a second interaction port Y in a multi-system hybrid network transmission system based on a CPRI architecture;

18 is a schematic diagram of an uplink W combination path of a first-system near-end machine in a multi-system hybrid network transmission system based on a CPRI architecture according to the present invention;

19 is a schematic diagram of an uplink G combination of a first-system near-end machine in a multi-system hybrid networking transmission system based on a CPRI architecture according to the present invention;

20 is a schematic diagram of an uplink W combination path of a second system near-end machine in a multi-system hybrid networking transmission system based on a CPRI architecture according to the present invention;

21 is a schematic diagram of an uplink G combination of a second-system near-end machine in a multi-system hybrid network transmission system based on a CPRI architecture according to the present invention;

22 is a schematic diagram of a far-end uplink W alignment summation in a multi-system hybrid networking transmission system based on a CPRI architecture according to the present invention;

23 is a schematic diagram of a far-end uplink G alignment summation in a multi-system hybrid networking transmission system based on a CPRI architecture according to the present invention;

24 is a schematic flowchart of Embodiment 1 of a multi-system hybrid networking transmission method based on a CPRI architecture implemented by a first-system near-end machine according to the present invention;

25 is a schematic flowchart of Embodiment 1 of a multi-system hybrid networking transmission method based on a CPRI architecture implemented by a second-system near-end machine according to the present invention;

26 is a schematic diagram of a first abnormal flow in a multi-system hybrid networking transmission method based on a CPRI architecture according to the present invention;

27 is a schematic diagram of a second abnormal flow in a multi-system hybrid networking transmission method based on a CPRI architecture according to the present invention;

28 is a schematic diagram of a third abnormal flow in a multi-system hybrid networking transmission method based on a CPRI architecture according to the present invention.

Detailed ways

In order to facilitate the understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. Preferred embodiments of the invention are given in the drawings. However, the invention may be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and comprehensive.

All technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, unless otherwise defined. The terminology used in the description of the present invention is for the purpose of describing particular embodiments and is not intended to limit the invention. The term "and/or" used herein includes any and all combinations of one or more of the associated listed items.

Embodiment 1 of the multi-system hybrid networking transmission system based on CPRI architecture of the present invention:

In order to solve the problem that the conventional technology cannot realize that a device completes multiple signal coverage and cannot perform multi-standard composite signal transmission, the present invention provides a multi-system hybrid networking transmission system based on the CPRI architecture. FIG. 1 is the present invention. FIG. 1 is a schematic structural diagram of a multi-system hybrid networking transmission system based on a CPRI architecture; as shown in FIG. 1 , a first-standard near-end machine and a second-standard near-end machine connected to the first-standard near-end machine; The system proximal end machine and the second system proximal end machine are respectively connected with corresponding remote machines;

The first-system near-end machine and the second-system near-end machine mutually acquire downlink data of each network system received by the other party; the first-standard near-end machine and the second-standard near-end machine separately receive and acquire downlink data of each network standard Performing the combined processing, and transmitting the obtained downlink data to the corresponding remote machine; the remote machine performs data separation after receiving the combined downlink data, and then sends the data;

The remote machine performs combined processing on the local data and the received uplink data of each network standard, and transmits the obtained combined uplink data to the corresponding first-standard near-end machine and the second-standard near-end machine; The near-end machine and the second-type near-end machine separately separate and transmit the received uplink data after the combined according to the respective systems, and mutually acquire the uplink data received by the other party; the first-standard near-end machine, The second-standard near-end machine separately separates and transmits the acquired uplink data according to the respective systems according to the respective standards.

Specifically, the present invention may include a first system proximal end machine (REC1), a second system proximal end machine (REC2), and an interactive communication link disposed between the first system proximal end machine and the second system proximal end machine. In order to connect the first standard proximal machine with the second standard proximal machine; further comprising respectively disposed between the first standard proximal machine and the corresponding remote machine, the second standard proximal machine and the corresponding each Each service communication link between the remote machines is configured to connect the first-standard near-end machine and the second-standard near-end machine to corresponding remote machines respectively;

The service communication link may include a service uplink and a service downlink; the specific data transmission process may be:

The first-standard near-end machine and the second-system near-end machine mutually acquire downlink data of each network system received by the other party along the interactive communication link; the first-standard near-end machine and the second-standard near-end machine respectively follow their respective service downlinks The road performs the combined processing on the obtained downlink data of each network standard, and transmits the obtained downlink data to the corresponding remote machine; the remote machine performs the downlink data after the combined downlink along the service downlink. After the data is separated, it is issued;

The remote machine performs combined processing on the local data and the received uplink data of each network standard along the service uplink, and transmits the obtained combined uplink data to the corresponding first-standard near-end machine and the second-standard near-end end. The first-standard near-end machine and the second-type near-end machine transmit the combined uplink data received by the other party along the interactive communication link, and perform data separation and transmission on the uplink data after the combined uplinks along the respective service uplinks.

It should be noted that the foregoing communication link (eg, an interactive communication link, a service communication link) refers to a physical channel between two nodes in the network, and the transmission medium of the communication link may include a twisted pair, an optical fiber, and Microwave; preferably, the communication link is a physical link, including a twisted pair, an optical fiber.

The invention is based on a dual near-end machine (a first-system near-end machine and a second-system near-end machine), and provides an independent backup topology structure, so that the two systems are completely independent; based on an interactive communication link disposed between the near-end machines, The service communication link between the near-end machine and the remote machine enables the present invention to independently map different system IQ data to the IQ block of the CPRI protocol according to the respective system characteristics for unified transmission, and realize multi-standard signal mixed transmission. . Each system has an independent near-end device, and signal interactions of different standards interact through interactive communication links to improve system reliability.

At the same time, based on the system architecture of the present invention, independent mapping of IQ data of different standards can be adopted, so that it is only necessary to directly sample each different standard data directly, which is not necessarily related to the sampling rate, and only needs to map each standard data to CPRI alone. Just in the middle.

Preferably, each network system includes a W system, a G system, and an L system; the W system is any of the following 3G systems or 4G systems: WCDMA, CDMA2000, and TD-SCDMA; and the G system is any of the following 2G systems. : GSM and CDMA; L system is any of the following wireless network standards: WLAN and WIFI. In the embodiment 1 of the multi-system hybrid networking transmission system based on the CPRI architecture, the network standard data can be any combination of any 3G system and 2G system plus wireless Internet access.

In a specific embodiment, the first system near-end machine is a W-type wireless device controller; the second-system near-end machine is a G-type wireless device controller; and the remote device is a wireless device;

The W-type wireless device controller receives the first part of the network standard downlink data, and transmits the first part of the network standard downlink data backup to the G-type wireless device controller; the G-type wireless device controller receives the second part of the network standard downlink data, and the first The second part of the network standard downlink data backup is transmitted to the W standard wireless device controller;

The first part of the network standard downlink data includes the W system downlink data; the second part of the network standard downlink data includes the G system downlink data;

The W-type wireless device controller transmits the first part of the network standard uplink data after the data is separated by the combined uplink data transmitted by the wireless device, and transmits the combined uplink data backup to the G-type wireless device controller for processing; the G-type wireless device The controller performs data separation after the combined uplink data transmitted by the wireless device, and then sends the second part of the network standard uplink data, and transmits the combined uplink data backup to the W-type wireless device controller for processing;

The first part of the network standard uplink data includes the W system uplink data; the second part of the network standard uplink data includes the G system uplink data.

Specifically, based on the above data transmission process, the present invention can improve the reliability by transmitting the different formats by independent bandwidth and providing the near-end equipment of the dual backup architecture, and the present invention can provide flexible 2+ compared with the prior art. 1 multi-standard signal mixed transmission.

In a specific example, the first part of the network standard downlink data further includes L system downlink data; the first part of the network standard uplink data further includes L system uplink data;

The W-type wireless device controls to receive the L-type downlink data or the L-type uplink data through the network port; the wireless device receives the L-standard downlink data or the L-standard uplink data through the network port.

In another specific example, the second part of the network standard downlink data further includes L system downlink data; the second part of the network standard uplink data further includes L system uplink data;

The G-type wireless device controls to receive the L-type downlink data or the L-type uplink data through the network port; the wireless device receives the L-standard downlink data or the L-standard uplink data through the network port.

Specifically, based on the present invention, the IQblock can be used to open the independent bandwidth transmission network port signal in the CPRI, and the device directly provides the external expansion network interface, and transmits the wireless network standard signal (ie, the L system signal).

In a specific embodiment, the W-type wireless device controller includes a first interaction port and a plurality of service ports, the G-type wireless device controller includes a second interaction port and a plurality of service ports, and the remote machine includes a plurality of transmission ports;

The first interaction port is connected to the second interaction port; the service port is connected to the transmission port.

Specifically, the radio frequency unit is generally defined as a radio device (RE), and the baseband processing unit is defined as a radio equipment controller (REC). In the CPRI (Commo Public Radio Interface) protocol, the REC (Radio Controller) corresponds to the BBU; the RE (Radio Device) corresponds to the RRU (Radio Remote Unit), and the CPRI protocol specifies the REC and RE. The port specification is the internal port of the base station and can be connected by fiber or cable.

Further, as shown in FIG. 1, in the embodiment 1 of the multi-system hybrid networking transmission system based on the CPRI architecture, the near-end machines (REC1 and REC2) can be classified into a W system and a G system. Based on the present invention, two hardware components that make REC1 and REC2 independent can be considered as a whole. Among them, A, B, C, D, E, and F are service ports. X and Y are near-end internal interactive optical ports for transmitting W, G, and L data. Z is a network port for receiving L data connections. In the remote unit (RE), A and B are transmission ports, and C is a network port.

Preferably, the present invention can arrange an interactive communication link through the first interaction port X and the second interaction port Y architecture; and set a service communication link through each service port and the corresponding transmission port architecture.

The service communication link in each embodiment of the multi-system hybrid networking transmission system based on the CPRI architecture is:

In order to further illustrate the technical solution of the present invention, and at the same time, in order to solve the problem that the conventional technology cannot realize multiple signal coverage of one device and cannot perform multi-standard composite signal transmission, the present invention specifically describes the data transmission process of the service communication link; 2 is a schematic structural diagram of a service communication link in a multi-system hybrid networking transmission system based on the CPRI architecture of the present invention; as shown in FIG. 2, the service communication link includes a framing module, a frame alignment module, a frame splicing module, and Deframing module and deframing module;

Specifically, the service communication link that is configured by the service port and the transmission port structure may include a framing module, a frame alignment module, a frame splicing module, a byte conversion module (bit width conversion module), a frame detaching module, and a demapping module. That is, the service port and the transmission port all transmit data based on the service communication link, and may include the above modules. The uplink and downlink (that is, the service uplink and the service downlink) have the same structure, and only the group de-frames are slightly different. The following describes each module in detail.

Framing module:

The framing module is configured to convert data of different rates of each standard signal into data of a uniform frame rate. FIG. 3 is a schematic diagram of W downlink framing in a multi-system hybrid networking transmission system based on a CPRI architecture according to the present invention; FIG. 3 is a structural design of a W group frame module.

The W downlink framing will be originally input to 3 carriers, each carrier is 3.84*N chip rate data, and the CPRI data framing is 3.84M basic frame rate. Therefore, the chip rate selection for different standards must be a multiple or fraction of the CPRI basic frame rate of 3.84M, in order to facilitate framing. The framing mode is shown in Figure 3. If the output of each system data is serial data, the parallel serialization part is not required, otherwise the parallel data needs to be converted into serial data. For example: N carriers with a chip rate of S, then N*1/S=1/F where F=CPRI base frame rate. Then when N=2, S=7.68, the code rate time is just the time of a CPRI base frame, so 2 (N=2) 7.68M (2*3.84) data can be placed in a CPRI base frame. in. The letter C part of the figure is the part of the control word specified by CPRI. The serial IQ data bit width is X bits. Filling the IQ block into the IQ block of the CPRI, you can place the I and then put the Q in order, or you can place the IQ interlace. If there are vacancies after 3 carriers are placed, they will be filled with zeros or reserved for subsequent expansion. Among them, the serial data refers to the data in which the data bits are transmitted in order during the transmission, and the parallel data is the data simultaneously transmitted by each data bit.

Further, in FIG. 3, Wi represents the position where the I data is placed, and Wq represents the position where the Q data is placed; that is, Wi, Wq is a container for storing IQ. The numbers 1, 2, and 3 following Wi and Wq indicate the label, that is, the carrier number of the IQ.

4 is a schematic diagram of W uplink framing in a multi-standard hybrid networking transmission system based on a CPRI architecture according to the present invention; W uplink framing mode is as shown in FIG. 4: W uplink framing is originally input into multiple carriers, and each carrier is a chip. The rate S2 data group frame is CPRI base frame data. Here, if the output is serial data, the parallel serial part is not required. The input carrier needs to meet n*S2=m*F to map into the CPRI base frame (where: S2 is the input chip rate and F is the CPRI basic frame rate), assuming the input signal is S2=5.12M, CPRI The basic frame rate F = 3.84M, then 3 * 5.12 = 4 * 3.84, that is, the chip rate of n (n = 3) F (F = 3.84M) is just m (m = 4) S2 (S2) =5.12M) The chip rate time, in order to recover m(m=4) S2(S2=5.12M) from the code stream, it can be every m(m=4) S2(S2=5.12M Inserting an x (x = 1) bit of data into the code stream as a flag bit, conveniently recovering m (m = 4) S2 from the n (n = 3) F (F = 3.84M) code streams ( Code stream data of S2 = 5.12M). Assuming that the IQ data bit width here is Y bits, leaving x as a flag bit, the effective IQ bit width can be transmitted as W=Y-x. The way to map to the CPRI frame is the same as the downlink, and the added flag bits are processed as data.

Among them, fp and 0 in Fig. 4 indicate flag bits. A frame structure stores A system, B system, each of which has a different rate. In order to distinguish the various system data into the same CPRI frame, you can insert the tag at a specific position. For example, inserting 1 at the first position, that is, the position of fp, and inserting 0 at other positions other than the start time, can form 100...0001, so that the present invention can clarify the boundary of the data. For example, I1Q1 represents the data of carrier 1, and I2Q2 represents the data of carrier 2, then Wi1 and Wq1 store I1Q1, and Wi2 and Wq2 store I2Q2.

FIG. 5 is a schematic diagram of a G downlink framing in a multi-standard hybrid networking transmission system based on a CPRI architecture according to the present invention; FIG. 5 shows a G downlink framing mode: the G downlink framing is originally input into z carriers, and each carrier satisfies n*. S2=m*F, then in the case of S2=1.92M chip rate, data frame is F=3.84M rate data, 2*1.92=1*3.84, n=2, m=1 is 2 3.84M The chip rate time is a time of 1.92 M chip rate. The transmission load capacity of a CPRI-based frame: T*15 (how much T is based on the adopted CPRI line rate). IQ data with a bit width of W can be transmitted z. That is, when T*15*n=W*z is satisfied, when T=16, n=2, if IQ adopts I bit width 15, Q bit width is 15, 16*15*2=30*16, ie z =16, so the z(z=16) carriers of S2(S2=1.92M) can just enter n=2 3.47M CPRI base frames, and a CPRI superframe has 256 3.84M basic frames. The invention can calculate from the super frame header, using the super frame header as the identifier, and the rate of the S2 chip every n base frames by the counter counting manner, the S2 code stream can be recovered relatively easily, that is, x (x) =0) bit as a recovery flag, that is, there is no need to add a recovery flag deliberately. Of course, it is also possible to use the flag bit.

6 is a schematic diagram of G uplink framing in a multi-standard hybrid networking transmission system based on a CPRI architecture according to the present invention; G uplink framing mode is as shown in FIG. 6: according to n*S2=m*F, T*15*n=W *z, to determine the matching relationship and transmission capabilities. There are currently z carriers whose bit width is S2 and whose bit width is W. If S2=0.96, F=3.84, it can be concluded that 4*0.96=1*3.84, ie n=4, m=1. For example, CPRI uses the rate of T=16 for G system transmission. If the IQ bit width is 15 bits, W=15+15. Then 16*15*4=30*z is z=32. Example: The G uplink framing will be originally input to 32 carriers, each carrier is 0.96M chip rate, and the data framing is 3.84M rate data. Because the time of four 3.84M chips is one time of 0.96 chips, four 3.84M CPRI base frames can store one 0.96M 32 carrier data, and one CPRI super frame has 256 base frames, which can be placed 64. A 0.96M chip, using the super frame header as the identifier, the rate of the S2 chip per n base frames by the counter counting method, the code stream of S2 can be easily recovered, that is, the x (x=0) bit is made. In order to restore the flag bit, it is not necessary to add a recovery flag bit. Of course, it is also possible to use the flag bit.

The L group frame mode keeps the original data structure unchanged, and it can be considered that each F (F=3.84M) is one frame group. The L data sent from the network interface only needs to be encoded, and is input as a continuous stream to the frame alignment module; preferably, HDLC (High-Level Data Link Control) encoding can be used. Doing HDLC coding enables the present invention to detect the header of an Ethernet packet from a continuous stream of code, and the tail is convenient for recovering data.

Frame Alignment Module:

FIG. 7 is a schematic diagram of frame alignment in a multi-system hybrid networking transmission system based on the CPRI architecture of the present invention; the frame alignment manner of the frame alignment module is as shown in FIG. 7: frame-aligning the W signal and the G signal after the framing. Since the L data is encoded data, it is not necessary to go through this module and directly transmit transparently. The working process may be: locally generating a reference 3.84M reference signal, feeding the incoming W, G signal respective 3.84M indication signals to compare with the reference, and then delaying each time according to the time difference from the reference. The last output signal is the alignment signal that is close to the reference. The purpose of alignment is to prepare the signals for merging into CPRI frames.

It is assumed that REC1 is in the A system, the interactive optical port is X, the REC2 is in the B system, and the interactive optical port is Y. Then, for REC1, REC1--"REC2 direction is called downlink, and REC2---"REC1 direction is called uplink. The downlink direction is the A system data that REC1 sends to REC2, and the uplink direction is the B system data that REC2 sends to REC1. The A system data may be W system data or G system data; the B system data may be W system data or G system data. The C system data is the L system data.

Frame splicing module:

The frame splicing module splices the data after each system framing into a basic frame. Considering the expansion problem, the module is designed as N inputs, and the number of bits per channel can be configured. Since the L data does not contain a control word, one of them is left alone for L. The remaining N-1 way is universal, and the transmission bandwidth=T*3.84*16 (T is the protocol definition bit width). Carrier bandwidth=Z*F*W (where Z is the number of carriers, F is the chip rate of the carrier, and W is the sum of the carrier IQ width), and can be performed under the condition that the transmission bandwidth ≥ carrier bandwidth is satisfied. Configuration.

Preferably, it can be set to 5 inputs, and the number of bits per channel is 8 bits. Since the L data does not contain the control word, one of them is separately used for L. The remaining 4 channels are universal; when the system is used, it is configured as 2 W signals and 2 G signals. Later, if it needs to be extended, it can be configured as 2*TD-SCDMA+2*G or 3*TD-SCDMA+1*G mode. The actual spliced data is 40 bits in parallel with a rate of 61.44 MHz. Each basic frame contains 16 bits of control word data, and the rest is complemented by zeros.

The basic frame structure is shown in FIG. 8. FIG. 8 is a schematic diagram of a basic frame structure in a multi-system hybrid networking transmission system based on the CPRI architecture. At the same time, this frame structure is compatible with the CPRI4.0 protocol. If the real CPRI4.0 protocol is used later, it is also easy to transplant. The other two configurations are shown in FIG. 9. FIG. 9 is a 2*TD-SCDMA+2*GSM+WLAN basic frame and 3*TD-SCDMA+1* in a multi-system hybrid networking transmission system based on the CPRI architecture of the present invention. Schematic diagram of the basic frame structure of GSM+WLAN.

Bit width conversion module:

The bit width conversion module performs bit width and rate matching in order to adapt to different interfaces. Wherein, in one specific example, the bit width conversion module may include a 40B/16B module and a 16B/40B module.

The 40B/16B module realizes the conversion of the data clock domain, converting the original 40-bit bit width, 61.44 MHz data into 16-bit bit width, and 153.6 MHz data in 3G mode. At the same time, the module is designed to be configurable mode, the conversion can choose to convert 16bit bit width, 61.44MHz data corresponds to 1.25G transmission mode or 16bit bit width, and 122.88MHz data corresponds to 2.5G transmission mode. The conversion process is shown in FIG. 10. FIG. 10 is a schematic diagram of the output to the serdes clock domain in the multi-system hybrid networking transmission system based on the CPRI architecture of the present invention. All the above modes are defined according to the CPRI protocol. The 3G mode is the optical port line rate of 3.072G; the 1.25G mode is: 1.2288G optical port line rate; and the 2.5G mode is: 2.4576G optical port line rate.

The working process of 16B/40B is the inverse process of 40B/16B module, which converts 16bit bit width and 153.6MHz data into 40bit bit width and 61.44MHz data. However, it should be noted that if the usage environment is 1.25G mode or 2.5G mode, it is necessary to fill in the excess part. The conversion process is shown in FIG. 11. FIG. 11 is a schematic diagram showing the output clock domain of serdes (short for SERializer serializer/DESerializer deserializer) in the multi-system hybrid networking transmission system based on the CPRI architecture of the present invention.

Frame module:

The frame removal module implements the inverse process of the frame splicing module. The process is shown in FIG. 12, which is a schematic diagram of the work of the frame splitting module in the multi-system hybrid networking transmission system based on the CPRI architecture of the present invention;

Deframing module:

The deframing module is the inverse of the framing.

13 is a schematic diagram of W downlink deframing in a multi-standard hybrid networking transmission system based on the CPRI architecture, and FIG. 13 is a de-frameping manner of the downlink decoding frame. FIG. The original input 3.84 MSPS frame data is deframed into 3 carriers, and each carrier is 7.68 MSPS data. Here, if the input is serial data, the serial to parallel part is not required.

FIG. 14 is a schematic diagram of W uplink deframing in a multi-standard hybrid networking transmission system based on a CPRI architecture according to the present invention; FIG. 14 is a de-frameping manner of W uplink de-frame decoding as shown in FIG. 14: W uplink de-frameing implements an inverse process of a framing frame. The original input 3.84 MSPS frame data is deframed into 6 carriers, and each carrier is 5.12 MSPS data. Here, if the input is serial data, the serial to parallel part is not required.

15 is a schematic diagram of G downlink deframing in a multi-standard hybrid networking transmission system based on a CPRI architecture according to the present invention; FIG. 15 is a de-frameping manner of a G downlink de-frame, as shown in FIG. The original input 3.84 MSPS frame data is deframed into 16 carriers, and each carrier is 1.92 MSPS data. Here, if the input is serial data, the serial to parallel part is not required.

16 is a schematic diagram of G uplink deframing in a multi-standard hybrid networking transmission system based on a CPRI architecture according to the present invention; FIG. 16 is a de-frameping manner of a G uplink de-frame, as shown in FIG. The original input 3.84 MSPS frame data is deframed into 32 carriers, and each carrier is 0.96 MSPS data. Here, if the input required by the downstream module is serial data, the serial to parallel part is not required.

L de-frame, since the transmitted L-Ethernet data is HDLC-encoded in advance, the L-data can be recovered by performing HDLC decoding on the data according to the rules of the HDLC in the de-frame process.

In order to further illustrate the technical solution of the present invention, and in order to solve the problem that the conventional technology cannot implement a plurality of signal coverages of one device and cannot perform multi-standard composite signal transmission, the present invention specifically describes the data transmission process of the interactive communication link; 17 is a schematic diagram of the communication of the interactive communication link based on the first interaction port X and the second interaction port Y in the multi-system hybrid network transmission system based on the CPRI architecture of the present invention; as shown in FIG. 17, the interaction port (X, Y) transmission The transmission mode of the interactive port is the same as that of the service port, except that the uplink and downlink are different between X and Y. See Figure 17. The detailed internal structure of the interactive communication link is as described above for the working process of each module in the service communication link.

Further, the far-end data alignment and forwarding process in the interactive communication link of the present invention is described in detail.

Near-end data alignment and forwarding: The near-end downlink data is broadcast, and the output can be directly aligned after framing. The uplink data REC1 needs to be aligned and combined with the X, A, B, and C uplink W data (see FIG. 18; FIG. 18 is a first-standard near-end machine uplink in the multi-standard hybrid networking transmission system based on the CPRI architecture of the present invention. W combined road diagram). At the same time, the uplink G data of the A, B, and C lines need to be aligned and transmitted to the X (see FIG. 19, which is the uplink G of the first system near-end machine in the multi-system hybrid network transmission system based on the CPRI architecture of the present invention. Road map). And the received L data is transparently transmitted to X. REC2 needs to align the D, E, F, and Y uplink G data for output (see FIG. 20; FIG. 20 is a second standard type near-end uplink W in the multi-standard hybrid network transmission system based on the CPRI architecture of the present invention; Road map). At the same time, the D, E, and F uplink W data need to be aligned and transmitted to Y (see FIG. 21; FIG. 21 is a second standard type near-end uplink G-integration in the multi-system hybrid networking transmission system based on the CPRI architecture of the present invention; Road diagram), and pass the L data to Y. Among them, all the above operations are performed on the serial data after deframing.

Remote data alignment and forwarding: The remote downlink data is broadcast, and the data frame can be directly output after de-framed. In the uplink, the W and G channels are independently aligned with the local data and then sent to the framing module for framing (see FIG. 22 and FIG. 23, wherein FIG. 22 is a multi-standard hybrid network transmission system based on the CPRI architecture of the present invention. The uplink uplink W alignment summation diagram is shown in FIG. 23; FIG. 23 is a schematic diagram of the far-end uplink G alignment summation in the multi-standard hybrid networking transmission system based on the CPRI architecture of the present invention. The L data does not need to be aligned, and is directly added and then transparently transmitted.

The multi-standard hybrid networking transmission system based on the CPRI architecture can encapsulate a plurality of different signals into the CPRI protocol to implement multi-standard transparent transmission, and is based on a multi-standard RRU (Radio Remote Unit). The multi-standard I/Q data of the capacity fiber transmission RRU can solve the simultaneous coverage of multiple signals such as 2G, 3G/4G, WLAN, and minimize the construction cost of the operator. Cost to meet the communication requirements of today's mobile communication users.

Embodiment 1 of a multi-system hybrid networking transmission method based on CPRI architecture implemented from the perspective of a first-system near-end machine:

Based on the above technical solution of the multi-system hybrid networking transmission system based on the CPRI architecture, and in order to solve the problem that the conventional technology cannot realize multiple signal coverage of one device and cannot perform multi-standard composite signal transmission, the present invention also provides a Embodiment 1 of the multi-system hybrid networking transmission method based on CPRI architecture implemented by the first system near-end machine angle may include uplink transmission and downlink transmission; FIG. 24 is implemented from the perspective of the first-standard near-end machine according to the present invention. Schematic diagram of Embodiment 1 of a multi-system hybrid networking transmission method based on CPRI architecture;

As shown in Figure 24, the downlink transmission includes the following steps:

Step S110: Receive downlink data of the first part of the network standard, and acquire downlink data of the second part of the network standard received by the second-standard near-end machine.

Step S120: Perform a combined processing on the downlink data of the first part of the network standard and the downlink data of the second part of the network standard to obtain downlink data after combining;

Step S130: transmitting the downlink data after the combination to the corresponding remote machine;

The uplink transmission includes the following steps:

Step S210: Perform data separation on the combined uplink data transmitted by the remote device, and send the first part of the network standard uplink data;

Step S220: Send the combined uplink data transmitted by the remote device to the second-standard near-end machine, and acquire the uplink data after the combined remote-machine transmission received by the second-standard near-end machine;

Step S230: Perform data separation on the combined uplink data transmitted by the second-standard near-end machine, and send the first part of the network standard uplink data.

In a specific embodiment, the step of combining the first part of the network standard downlink data and the second part of the network standard downlink data to obtain the combined downlink data includes:

The W system downlink data and the G system downlink data are respectively framing, and the unified frame rate post-frame W system data and the post-frame G system data are obtained; the L system downlink data is encoded, and the encoded L system data is encoded. Transparent transmission to the frame splicing module;

Frame alignment of the post-framing W system data and the post-frame G system data according to the reference signal to obtain frame alignment data;

Combining the frame alignment data and the encoded L standard data line to obtain a CPRI basic frame, and confirming the CPRI basic frame as the combined downlink data;

The data is separated from the uplink data after the combination, and the steps of sending the first part of the network standard uplink data include:

Separating the uplink data after the combining, and obtaining the separated frame data;

Deframing the separated frame data, and transmitting the obtained deframed W system uplink data and L system uplink data.

Specifically, the multi-system hybrid networking transmission process based on the CPRI architecture implemented from the perspective of the first-system near-end machine, that is, the multi-standard hybrid networking transmission system based on the CPRI architecture, is based on an interactive communication link and a service communication chain. The data transmission process of the road is not repeated here.

The multi-system hybrid networking transmission method based on CPRI architecture implemented by the first system near-end machine is based on the communication connection between the near-end machines and the communication connection between the near-end machine and the remote machine, so that the present invention According to the characteristics of the respective systems, the invention can independently map different types of IQ data to the IQ block of the CPRI protocol for unified transmission, and realize multi-standard signal mixed transmission. Each system has an independent near-end device, and signal interactions of different standards interact through interactive communication links to improve system reliability.

The present invention is a CPRI architecture-based multi-system hybrid networking transmission method implemented from the perspective of a second-system near-end machine.

Based on the above technical solution of the multi-system hybrid networking transmission system based on the CPRI architecture, and in order to solve the problem that the conventional technology cannot realize multiple signal coverage of one device and cannot perform multi-standard composite signal transmission, the present invention also provides a Embodiment 1 of the multi-system hybrid networking transmission method based on CPRI architecture implemented by the second system near-end machine angle may include uplink transmission and downlink transmission; FIG. 25 is implemented from the perspective of the second-standard near-end machine according to the present invention. Schematic diagram of Embodiment 1 of a multi-system hybrid networking transmission method based on CPRI architecture;

As shown in Figure 25, the downlink transmission includes the following steps:

Step S310: Receive downlink data of the second part of the network standard, and acquire the downlink data of the first part of the network standard received by the first-standard near-end machine.

Step S320: performing a combined processing on the downlink data of the first part of the network standard and the downlink data of the second part of the network standard to obtain downlink data after combining;

Step S330: transmitting the downlink data after the combination to the corresponding remote machine;

The uplink transmission includes the following steps:

Step S410: Perform data separation on the uplink data after the combined transmission of the remote device, and send the second part of the network standard uplink data;

Step S420: Send the combined uplink data transmitted by the remote device to the first-standard near-end machine, and acquire the uplink data after the combined remote-machine transmission received by the first-standard near-end machine.

Step S430: Perform data separation on the combined uplink data transmitted by the first-standard near-end machine, and send the second part of the network standard uplink data.

In a specific embodiment, the step of combining the first part of the network standard downlink data and the second part of the network standard downlink data to obtain the combined downlink data includes:

The W system downlink data and the G system downlink data are respectively framing, and the unified frame rate post-frame W system data and the post-frame G system data are obtained; the L system downlink data is encoded, and the encoded L system data is encoded. Transparent transmission to the frame splicing module;

Frame alignment of the post-framing W system data and the post-frame G system data according to the reference signal to obtain frame alignment data;

Combining the frame alignment data and the encoded L standard data line to obtain a CPRI basic frame, and confirming the CPRI basic frame as the combined downlink data;

The data is separated from the uplink data after the combination, and the step of transmitting the second part of the network standard uplink data includes:

Separating the uplink data after the combining, and obtaining the separated frame data;

Deframing the separated frame data, and transmitting the obtained G frame uplink data and L system uplink data after deblocking.

The multi-system hybrid networking transmission method based on CPRI architecture implemented by the second system near-end machine is based on the communication connection between the near-end machines and the communication connection between the near-end machine and the remote machine, so that the present invention According to the characteristics of the respective systems, the invention can independently map different types of IQ data to the IQ block of the CPRI protocol for unified transmission, and realize multi-standard signal mixed transmission. Each system has an independent near-end device, and signal interactions of different standards interact through interactive communication links to improve system reliability.

Specifically, the foregoing transmission method embodies the workflow of the service communication link and the interactive communication link; and according to the transmission method of the multi-standard hybrid network transmission system based on the CPRI architecture of the present invention, the conventional data processing flow may be:

The REC1 near-end device obtains the downlink signal of W, the REC2 near-end device acquires the G downlink signal, and REC1 and REC2 mutually acquire the signal of the other party through the XY optical port, REC1 acquires the G and L signals, and REC2 acquires the W signal. Then, the REC1 combines the G+W+L signals and sends them to the downstream device through the private optical port ABC. The downstream device RE1 receives the data through the optical port A, and separates the W, G, and L signals, and then transmits them. The REC2 also sends the G+W+L signal through the private optical port DEF. Uplink signal: RE2 receives the G+W+L signal and then uploads it back to the B optical port of RE1 through optical port A. RE1 combines the data of B optical port with its own data and uploads it back to REC1 through optical port A. W separates the signal transmitted back from the optical port ABCX out of the W, G, and L signals, and combines and transmits the W signal, and transmits the W+G+L signal back to REC2 through the X-ray port. REC2 separates the G and L signals and sends them out through the signal received by the DEF.

Abnormal process:

26 is a schematic diagram of a first abnormal flow in a multi-system hybrid networking transmission method based on a CPRI architecture according to the present invention; as shown in FIG. 26, when a near-end of REC2 occurs, an error in 1, 2, and 3 as shown in the figure (G) The signal downlink is abnormal, the G signal uplink signal link is abnormal, and the L signal is abnormal.

Error 1: REC1 passes the downlink signal of the G signal to REC2 through the X-ray port.

Error 2: The REC2 transmits the G uplink signal that cannot be sent out to the REC1 through the Y optical port.

Error 3: REC2 transfers the L signal to be processed to W processing through the Y port.

FIG. 27 is a schematic diagram of a second abnormal flow in a multi-system hybrid networking transmission method based on a CPRI architecture according to the present invention; as shown in FIG. 27: 4, 5 errors occur (W downlink signal abnormality, W uplink signal abnormality)

Error 4: REC2 sends the received downlink W backup signal to REC1 through the Y optical port.

Error 5: REC1 sends the signal that needs to be sent out to REC2 through the X-ray port to send it out.

28 is a schematic diagram of a third abnormal flow in a multi-system hybrid networking transmission method based on a CPRI architecture, as shown in FIG. 28: error 6 occurs (an abnormality occurs in an XY optical port link), and each of REC2 and REC1 functions as a network. The center processes the W+G+L signal.

The CPRI architecture-based multi-system hybrid networking transmission method proposed by the present invention can adopt CPLD (Complex Programmable Logic Device), FPGA (Field-Programmable Gate Array), and EPLD (Erasable). Programmable Logic Device: programmable logic device such as DSP (Digital Signal Processing) or eASIC (Application Specific Integrated Circuit) can also be implemented by using a dedicated ASIC chip.

The multi-standard hybrid networking transmission and transmission method based on the CPRI architecture is based on the first-standard near-end machine and the second-standard near-end machine respectively, and provides an independent backup topology structure, so that the two systems are completely independent; based on the near-end machines The interactive communication connection, the communication connection between the near-end machine and the remote machine, so that the present invention can independently map different system IQ (In-Phase Quadrature) data to the CPRI protocol according to the respective system characteristics. The unified transmission in the IQblock enables multi-standard signal mixed transmission. Each system has an independent near-end device, and signal interactions of different standards interact through interactive communication links to improve system reliability. Based on the invention, the IQblock can be used in the CPRI to open up the independent bandwidth transmission network port signal, and the device directly provides the external expansion network interface and transmits the wireless network standard signal. The invention can encapsulate a plurality of different signals into the CPRI protocol to realize multi-standard transparent transmission, and based on the multi-standard RRU (Radio Remote Unit), the digital multi-standard I/ of the RRU is transmitted through the large-capacity optical fiber. Q data can solve the simultaneous coverage of multiple signals such as 2G, 3G/4G, WLAN, etc., and minimize the operator's construction cost and post-maintenance cost to meet the communication requirements of today's mobile communication users.

The technical features of the above-described embodiments may be arbitrarily combined. For the sake of brevity of description, all possible combinations of the technical features in the above embodiments are not described. However, as long as there is no contradiction between the combinations of these technical features, All should be considered as the scope of this manual.

The above-described embodiments are merely illustrative of several embodiments of the present invention, and the description thereof is more specific and detailed, but is not to be construed as limiting the scope of the invention. It should be noted that a number of variations and modifications may be made by those skilled in the art without departing from the spirit and scope of the invention. Therefore, the scope of the invention should be determined by the appended claims.

Claims (10)

1. A multi-system hybrid networking transmission system based on CPRI architecture, comprising: a first system proximal end machine, a second system proximal end machine connected to the first system proximal end machine; the first system proximal end The second standard proximal machine is respectively connected to the corresponding remote machines;

   The first-system near-end machine and the second-system near-end machine mutually acquire downlink data of each network system received by the other party; the first-standard near-end machine and the second-standard near-end machine respectively receive and Obtaining the downlink data of each network standard for the combined processing, and transmitting the obtained downlink data to the corresponding remote machine; the remote machine performs data separation after receiving the combined downlink data. Issued;

   The remote machine performs combined processing on the local data and the received uplink data of each network standard, and transmits the obtained combined uplink data to the corresponding first-standard near-end machine, and the second system is near The first type of the near-end machine and the second type of the near-end machine respectively perform data separation and transmission on the received uplink data according to the respective standards, and mutually acquire the combined road received by the other party. Uplink data; the first-system near-end machine and the second-system near-end machine separately perform data separation and transmission on the acquired uplink data according to respective systems.
2. The multi-system hybrid networking transmission system based on the CPRI architecture according to claim 1, wherein each of the network systems comprises a W system, a G system, and an L system; and the W system is in the following 3G system or 4G system. Any of the systems: WCDMA, CDMA2000, and TD-SCDMA; the G system is any of the following 2G systems: GSM and CDMA; the L system is any of the following wireless network standards: WLAN and WIFI.
3. The multi-system hybrid networking transmission system based on the CPRI architecture according to claim 2, wherein the first-standard near-end machine is a W-type wireless device controller; and the second-standard near-end machine is a G-type system. a wireless device controller; the remote device is a wireless device;

   The W-type wireless device controller receives the first part of the network standard downlink data, and transmits the first part of the network standard downlink data backup to the G-type wireless device controller; the G-type wireless device controller receives the second part Networking system downlink data, and transmitting the second part of the network standard downlink data backup to the W-type wireless device controller;

   The first part of the network standard downlink data includes W system downlink data; the second part of the network standard downlink data includes G system downlink data;

   The W-type wireless device controller transmits data of the first part of the network standard uplink data after the combined uplink data transmitted by the wireless device, and transmits the combined uplink data back to the G-type wireless device. Processing by the controller: the G-type wireless device controller performs data separation on the combined uplink data transmitted by the wireless device, and then sends the second partial network standard uplink data, and transmits the combined uplink data backup to the Said W-type wireless device controller processing;

   The first part of the network standard uplink data includes W standard uplink data; and the second part of the network standard uplink data includes G standard uplink data.
4. The multi-system hybrid networking transmission system based on the CPRI architecture of claim 3, wherein the first part of the network standard downlink data further comprises L system downlink data; the first part of the network standard uplink data further comprises an L system Uplink data

   The W-type wireless device controls to receive the L-type downlink data or the L-type uplink data through a network port; the wireless device receives the L-standard downlink data or sends the L-standard uplink data through a network port.
5. The multi-system hybrid network transmission system based on the CPRI architecture of claim 3, wherein the second part of the network standard downlink data further includes L system downlink data; the second part of the network standard uplink data further includes L system uplink data;

   The G-type wireless device controls to receive the L-type downlink data or the L-type uplink data through a network port; the wireless device receives the L-standard downlink data or delivers the L-standard uplink data through a network port.
6. The multi-standard hybrid network transmission system based on the CPRI architecture according to claim 4 or 5, wherein the W-type wireless device controller comprises a first interaction port and a plurality of service ports, and the G-type wireless device controls The device includes a second interaction port and a plurality of service ports, and the wireless device includes a plurality of transmission ports;

   The first interaction port is connected to the second interaction port; the service port is connected to the transmission port.
7. A transmission method for a multi-standard hybrid networking transmission system based on a CPRI architecture according to any one of claims 1 to 6, characterized in that it comprises an uplink transmission and a downlink transmission;

   The downlink transmission includes the following steps:

   Receiving the first part of the network standard downlink data, and mutually acquiring the second part of the network standard downlink data received by the second standard near-end machine;

   Performing combined processing on the first part of the network standard downlink data and the second part of the network standard downlink data to obtain downlink data after combining;

   Transmitting the combined downlink data to a corresponding remote machine;

   The uplink transmission includes the following steps:

   Performing data separation on the uplink data after the combined transmission of the remote device, and transmitting the first part of the network standard uplink data;

   Transmitting the combined uplink data transmitted by the remote machine to the second-standard near-end machine, and acquiring the uplink data after the combined remote-machine transmission received by the second-type near-end machine;

   Performing data separation on the combined uplink data transmitted by the second-type near-end machine, and transmitting the first part of the network standard uplink data.
8. The multi-standard hybrid networking transmission method based on the CPRI architecture according to claim 6, wherein the first part of the network standard downlink data and the second part of the network standard downlink data are combined and processed to obtain a combined way The steps of post-downstream data include:

   The W system downlink data and the G system downlink data are respectively framing, and the unified frame rate post-frame W system data and the post-frame G system data are obtained; the L system downlink data is encoded, and the encoded L system data is encoded. Transparently transmitting to the frame splicing module;

   Performing frame alignment on the post-frame W data and the post-frame G system data according to the reference signal to obtain frame alignment data;

   Aligning the frame alignment data and the encoded L system data line to obtain a CPRI basic frame, and confirming the CPRI basic frame as the combined downlink data;

   The data is separated from the uplink data after the combination, and the steps of sending the first part of the network standard uplink data include:

   Separating the uplink data after the combining to obtain separated frame data;

   Deframing the separated frame data, and transmitting the obtained deframed W system uplink data and L system uplink data.
9. A transmission method for a multi-standard hybrid networking transmission system based on a CPRI architecture according to any one of claims 1 to 6, characterized in that it comprises an uplink transmission and a downlink transmission;

   The downlink transmission includes the following steps:

   Receiving the second part of the network standard downlink data, and mutually acquiring the first part of the network standard downlink data received by the first-standard near-end machine;

   Performing combined processing on the first part of the network standard downlink data and the second part of the network standard downlink data to obtain downlink data after combining;

   Transmitting the combined downlink data to a corresponding remote machine;

   The uplink transmission includes the following steps:

   Performing data separation on the uplink data after the combined transmission of the remote machine, and transmitting the second part of the network standard uplink data;

   Transmitting the combined uplink data transmitted by the remote device to the first-standard near-end machine, and acquiring the uplink data after the combined remote-machine transmission received by the first-type near-end machine;

   Performing data separation on the combined uplink data transmitted by the first-type near-end machine, and transmitting the second part of the network standard uplink data.
10. The multi-system hybrid networking transmission method based on the CPRI architecture according to claim 9, wherein the first part of the network standard downlink data and the second part of the network standard downlink data are combined and processed to obtain a combined road The steps of post-downstream data include:

    The W system downlink data and the G system downlink data are respectively framing, and the unified frame rate post-frame W system data and the post-frame G system data are obtained; the L system downlink data is encoded, and the encoded L system data is encoded. Transparently transmitting to the frame splicing module;

    Performing frame alignment on the post-frame W data and the post-frame G system data according to the reference signal to obtain frame alignment data;

    Aligning the frame alignment data and the encoded L system data line to obtain a CPRI basic frame, and confirming the CPRI basic frame as the combined downlink data;

    The data is separated from the uplink data after the combination, and the step of transmitting the second part of the network standard uplink data includes:

    Separating the uplink data after the combining to obtain separated frame data;

    Deframing the separated frame data, and transmitting the obtained deframed G system uplink data and L system uplink data.

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