CN104662956B

CN104662956B - Band processing system, method for processing baseband signal and base station

Info

Publication number: CN104662956B
Application number: CN201380001340.XA
Authority: CN
Inventors: 蒋亚军; 王珏平; 王吉滨; 李波杰; 张锦芳
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2013-09-25
Filing date: 2013-09-25
Publication date: 2018-10-19
Anticipated expiration: 2033-09-25
Also published as: CN104662956A; WO2015042802A1

Abstract

The embodiment of the invention discloses a kind of band processing system, method for processing baseband signal and base stations.A kind of band processing system, including base band associated units and at least one baseband processing unit, baseband processing unit is used to obtain uplink Combined Treatment data after completing preposition processing from the up-link wireless signal data that at least one remote radio unit (RRU) RRU is received, and the uplink Combined Treatment data are transmitted to base band associated units by the hybrid interface, base band associated units are used to obtain the upper layer protocol data that can be sent to base station control node after completing Combined Treatment processing from the uplink Combined Treatment data that at least one baseband processing unit receives.So that being transferred to multiple websites of proximal end base band associated units or the uplink Combined Treatment data bandwidth reduction of multiple cells, data transfer bandwidth between proximal device and remote equipment is reduced.The embodiment of the invention also discloses method for processing baseband signal and base station.

Description

Baseband processing system, baseband signal processing method and base station

Technical Field

The embodiments of the present invention relate to the field of communications, and in particular, to a baseband processing system, a baseband signal processing method, and a base station.

Background

In an existing Radio Remote distributed base station, the entire base station is divided into a BaseBand processing Unit (BBU) and a Remote Radio Unit (RRU). The RRU is arranged at an access point far away from the BBU, and the BBU and the RRU are connected through an optical fiber to transmit baseband wireless digital signals through a Common Public Radio Interface (CPRI).

With the emergence of technologies of ultra-3 generation communication systems and 4 th generation communication systems such as Long Term Evolution (LTE) systems, the wireless spectrum width is increasing and can reach 20MHz to 100MHz, and meanwhile, due to the emergence of joint processing technologies such as Multiple Input Multiple Output (MIMO) support, the bandwidth required for transmitting baseband wireless digital signals between a BBU at a near end and a RRU at a far end is increasing, for example, an I/Q signal is transmitted in a digital manner, there are 3 sectors in a 20MHz bandwidth system, each RRU is configured with 4 antennas, and the data transmission rate between the BBU and the RRU will be as high as 11.8Gbps, so it is very important to effectively reduce the data transmission bandwidth between the BBU at the near end and the RRU at the far end.

Disclosure of Invention

In view of this, embodiments of the present invention provide a baseband processing system, a baseband signal processing method, and a base station, so as to effectively reduce a transmission bandwidth between a far-end device and a near-end device when baseband signals of multiple sites or multiple cells are jointly processed.

In a first aspect, a baseband processing system is provided, which includes a baseband combining unit and at least one baseband processing unit, wherein each baseband processing unit is connected to at least one remote radio unit RRU at a remote end, and the baseband combining unit is located at a near end and connected to at least one baseband processing unit through a hybrid interface;

when the baseband processing system processes the uplink wireless signal data,

the baseband processing unit is configured to perform pre-processing on uplink radio signal data received from at least one RRU to obtain data to be subjected to uplink joint processing, and transmit the data to be subjected to uplink joint processing to the baseband joint unit through the hybrid interface, where the pre-processing at least includes each processing step before radio frame decoding processing and radio frame decoding processing;

the baseband combination unit is configured to complete uplink combination processing on data to be subjected to uplink combination processing received from at least one baseband processing unit to obtain upper layer protocol data that can be sent to a base station control node, where the uplink combination processing at least includes uplink upper layer protocol processing, or,

when the baseband processing system processes the downlink upper layer protocol data,

the base band combination unit is configured to complete downlink combination processing on downlink upper layer protocol data received from the base station control node to obtain downlink combination processing data, and transmit the downlink combination processing data to the base band processing unit through the hybrid interface, where the downlink combination processing at least includes downlink upper layer protocol processing;

the baseband processing unit is configured to perform post-processing on the downlink pre-processing data received from the baseband combining unit to obtain downlink radio signal data that can be sent to at least one RRU, where the post-processing at least includes processing steps after radio frame framing and radio frame framing.

In a first possible implementation manner of the first aspect, the data to be processed by uplink joint processing at least includes signal data of one of the following interfaces: the wireless communication device comprises a first interface, a second interface and a third interface, wherein the first interface is an interface between radio frame decoding processing and demodulation processing, the second interface is an interface between demodulation processing and decoding processing, and the third interface is an interface between decoding processing and upper layer protocol processing.

With reference to the first aspect or the first possible implementation manner of the first aspect, in a second possible implementation manner, the baseband processing unit is specifically configured to:

and the uplink wireless signal processing unit is used for performing at least radio frame decoding processing on the uplink wireless signal data received from at least one RRU according to the transmission bandwidth of the hybrid interface to obtain data to be subjected to uplink joint processing.

With reference to the first possible implementation manner of the first aspect, in a third possible implementation manner, the baseband processing unit includes a first determining module and a first processing module:

the first determining module is configured to determine, according to the transmission bandwidth of the hybrid interface, a proportion of signal data of different interfaces in the data to be processed by uplink joint processing, where the different interfaces at least include one of: a first interface, a second interface and a third interface;

the first processing module is configured to perform pre-processing on the uplink radio signal data received from the at least one RRU according to the ratio of the signal data of each interface determined by the first determining module in the data to be jointly processed in uplink to obtain the data to be jointly processed in uplink.

With reference to the third possible implementation manner of the first aspect, in a fourth possible implementation manner, the first determining module is specifically configured to,

if the transmission bandwidth of the hybrid interface is higher than the data bandwidth of the first interface, determining that the proportion of the signal data of the first interface in the data to be subjected to uplink joint processing is 100%; or,

if the transmission bandwidth of the hybrid interface is lower than or equal to the data bandwidth of the first interface, determining the proportion of signal data of different interfaces in the data to be subjected to uplink combined processing according to a preset rule; or,

if the transmission bandwidth of the hybrid interface is lower than or equal to the data bandwidth of the first interface, acquiring a joint processing scheme of the uplink wireless signal data received from the at least one RRU, and determining the proportions of the signal data of different interfaces in the uplink joint processing data according to the corresponding relation between the proportions of the signal data of different interfaces in the uplink joint processing data and the performance gains of different joint processing schemes and the joint processing scheme of the uplink wireless signal data received from the at least one RRU;

wherein,

the data bandwidth of the first interface is determined by data obtained after radio frame deframing processing is completed according to the radio signal data of the uplink radio signal data received from the at least one RRU.

With reference to the foregoing various possible implementations of the first aspect, in a fifth possible implementation, the baseband combining unit is specifically configured to:

if the data to be subjected to uplink joint processing comprises data of a first interface, performing joint demodulation processing, joint decoding processing and upper protocol processing on the data of the first interface to obtain upper protocol data which can be sent to a base station control node; or,

if the data to be subjected to uplink joint processing comprises data of a second interface, performing joint decoding processing and upper protocol processing on the data of the second interface to obtain upper protocol data which can be sent to a base station control node; or,

and if the data to be subjected to uplink joint processing comprises data of a third interface, processing the data of the third interface by an upper layer protocol to obtain upper layer protocol data which can be sent to a base station control node.

In a sixth possible implementation manner of the first aspect, the downlink joint processing data at least includes signal data of one of the following interfaces: the wireless communication device comprises a fourth interface, a fifth interface and a sixth interface, wherein the fourth interface is an interface between wireless frame framing processing and modulation processing, the fifth interface is an interface between modulation processing and coding processing, and the sixth interface is an interface between coding processing and upper layer protocol processing.

With reference to the first aspect or the sixth possible implementation manner of the first aspect, in a seventh possible implementation manner of the first aspect, the baseband combining unit is specifically configured to:

and the uplink protocol processing unit is used for processing uplink protocol data received from the base station control node at least in the uplink direction according to the transmission bandwidth of the hybrid interface to obtain uplink joint processing data.

With reference to the sixth possible implementation manner of the first aspect, in an eighth possible implementation manner of the first aspect, the baseband combining unit includes a second determining module and a second processing module:

the second determining module is configured to determine, according to the transmission bandwidth of the hybrid interface, a ratio of signal data of different interfaces in downlink joint processing data, where the different interfaces at least include one of: a fourth interface, a fifth interface and a sixth interface;

the second processing module is configured to complete downlink joint processing on the downlink upper layer protocol data received from the base station control node according to the ratio of the signal data of each interface determined by the second determining module in the downlink joint processing data, and then obtain the downlink joint processing data.

With reference to the eighth possible implementation manner of the first aspect, in a ninth possible implementation manner of the first aspect,

the second determining means is, in particular,

if the transmission bandwidth of the hybrid interface is higher than the data bandwidth of the fourth interface, determining that the proportion of the signal data of the fourth interface in the downlink joint processing data is 100%; or,

if the transmission bandwidth of the hybrid interface is lower than or equal to the data bandwidth of the fourth interface, determining the proportion of the signal data of different interfaces in the downlink joint processing data according to a preset rule; or,

if the transmission bandwidth of the hybrid interface is less than or equal to the data bandwidth of the fourth interface, acquiring a joint processing scheme of the downlink upper layer protocol data received from the base station control node, and determining the proportion of the signal data of different interfaces in the downlink joint processing data according to the corresponding relation between the proportion of the signal data of different interfaces in the downlink joint processing data and the performance benefit of different joint processing schemes and the joint processing scheme of the downlink upper layer protocol data received from the base station control node;

wherein,

and the data bandwidth of the fourth interface is determined by data after modulation processing is completed according to the downlink upper layer protocol data received from the base station control node.

With reference to the sixth possible implementation manner, the seventh possible implementation manner, the eighth possible implementation manner, or the ninth possible implementation manner of the first aspect, in a tenth possible implementation manner, the baseband processing unit is specifically configured to:

if the downlink joint processing data comprises the data of the fourth interface, performing radio frame framing processing on the data of the fourth interface and each processing step after the radio frame framing processing to obtain downlink radio signal data which can be sent to at least one RRU; or,

if the downlink joint processing data comprises the data of the fifth interface, the data of the fifth interface is modulated, and downlink wireless signal data which can be sent to at least one RRU is obtained through wireless frame framing processing and each processing step after the wireless frame framing processing; or,

and if the downlink joint processing data comprises data of a sixth interface, performing coding processing, modulation processing, radio frame framing processing and radio frame framing processing on the data of the sixth interface to obtain downlink radio signal data which can be sent to at least one RRU.

With reference to the foregoing various possible implementation manners of the first aspect, in an eleventh possible implementation manner, the base station control node is a base station controller or a core network.

In a second aspect, a method of baseband signal processing is provided, the method comprising:

when the baseband processing system processes the upstream wireless signal data,

a baseband processing unit in the baseband processing system performs pre-processing on uplink wireless signal data received by at least one RRU connected with the baseband processing unit to obtain data to be subjected to uplink joint processing, and transmits the data to be subjected to uplink joint processing to the baseband joint unit through a hybrid interface, wherein the pre-processing at least comprises each processing step before wireless frame de-framing processing and wireless frame de-framing processing;

a baseband joint unit in the baseband processing system completes uplink joint processing on data to be subjected to uplink joint processing received from at least one baseband processing unit to obtain upper layer protocol data which can be generated to a base station control node, wherein the uplink joint processing at least comprises upper layer protocol processing; or,

a baseband joint unit in the baseband processing system performs downlink joint processing on downlink upper layer protocol data received from the base station control node to obtain downlink joint processing data, and transmits the downlink joint processing data to the baseband processing unit through the hybrid interface, wherein the downlink joint processing at least comprises downlink upper layer protocol processing;

and a baseband processing unit in the baseband processing system performs post-processing on the downlink joint processing data received from the baseband joint unit to obtain downlink wireless signal data which can be sent to at least one RRU, wherein the post-processing at least comprises each processing step after wireless frame framing processing and wireless frame framing processing.

In a first possible implementation manner of the second aspect, the data to be processed by uplink joint processing at least includes signal data of one of the following interfaces: the wireless communication device comprises a first interface, a second interface and a third interface, wherein the first interface is an interface between radio frame decoding processing and demodulation processing, the second interface is an interface between demodulation processing and decoding processing, and the third interface is an interface between decoding processing and upper layer protocol processing.

With reference to the second aspect or the first possible implementation manner of the second aspect, in a second possible implementation manner, the obtaining, by a baseband processing unit in the baseband processing system, to-be-uplink jointly processed data after performing pre-processing on uplink radio signal data received by at least one RRU connected to the baseband processing unit includes:

and the baseband processing unit in the baseband processing system performs at least radio frame decoding processing on the uplink wireless signal data received from at least one RRU according to the transmission bandwidth of the hybrid interface to obtain the data to be subjected to uplink joint processing.

With reference to the first possible implementation manner of the second aspect, in a third possible implementation manner, a pre-processing is performed, by a baseband processing unit in the baseband processing system, on uplink radio signal data received by at least one RRU connected to the baseband processing unit to obtain to-be-uplink joint processing data, where the pre-processing is performed, and the obtaining includes:

determining the proportion of the signal data of each interface in the data to be subjected to uplink combined processing according to the transmission bandwidth of the hybrid interface, wherein the interface at least comprises one of the following: a first interface, a second interface and a third interface;

and completing pre-processing on the uplink wireless signal data received from the at least one RRU according to the proportion of the signal data of each interface in the data to be subjected to uplink combined processing to obtain the data to be subjected to uplink combined processing.

With reference to the third possible implementation manner of the second aspect, in a fourth possible implementation manner, the determining, according to the transmission bandwidth of the hybrid interface, the proportion of the signal data of different interfaces in the data to be subjected to uplink joint processing includes:

wherein,

With reference to the foregoing various possible implementation manners of the second aspect, in a fifth possible implementation manner, a baseband combining unit in the baseband processing system obtains upper layer protocol data that can be generated to a base station control node after uplink combining processing is completed on data to be subjected to uplink combined processing received from at least one baseband processing unit, where the upper layer protocol data includes:

In a sixth possible implementation manner of the second aspect, the downlink joint processing data at least includes signal data of one of the following interfaces: the wireless communication device comprises a fourth interface, a fifth interface and a sixth interface, wherein the fourth interface is an interface between wireless frame framing processing and modulation processing, the fifth interface is an interface between modulation processing and coding processing, and the sixth interface is an interface between coding processing and upper layer protocol processing.

With reference to the second aspect or the sixth possible implementation manner of the second aspect, in a seventh possible implementation manner of the second aspect, the obtaining, by a baseband combining unit in the baseband processing system, downlink joint processing data after downlink joint processing is completed on downlink upper layer protocol data received from the base station control node includes:

and the baseband joint unit in the baseband processing system processes downlink upper layer protocol data received from the base station control node at least through an upper layer protocol in a downlink direction according to the transmission bandwidth of the hybrid interface to obtain downlink joint processing data.

With reference to the sixth possible implementation manner of the second aspect, in an eighth possible implementation manner of the second aspect, the baseband combining unit includes a second determining module and a second processing module:

With reference to the eighth possible implementation manner of the second aspect, in a ninth possible implementation manner of the second aspect,

the determining the proportion of the signal data of different interfaces in the downlink joint processing data according to the transmission bandwidth of the hybrid interface comprises:

wherein,

With reference to the sixth possible implementation manner, the seventh possible implementation manner, the eighth possible implementation manner, or the ninth possible implementation manner of the second aspect, in a tenth possible implementation manner, a baseband processing unit in the baseband processing system obtains downlink radio signal data that can be sent to at least one RRU after performing post-processing on the downlink joint processing data received from the baseband joint unit, and the method includes:

With reference to the foregoing various possible implementation manners of the second aspect, in an eleventh possible implementation manner, the base station control node is a base station controller or a core network.

In a third aspect, a base station is provided, which includes:

at least one remote radio unit RRU, such as the baseband processing system described in any of the above, where each baseband processing unit in the baseband processing system is connected to at least one RRU at a remote end, and a baseband combining unit in the baseband processing system is deployed at a near end.

In a first possible implementation manner of the third aspect, the RRUs connected to each baseband processing unit are RRUs of the same site or the same cell.

By the scheme, the baseband signal processing is completed by the baseband processing unit and the baseband combination unit together, the baseband processing unit is arranged close to the RRU, the baseband combination unit is arranged at the near end, the data bandwidth of the joint processing of a plurality of sites or a plurality of cells transmitted between the near end equipment and the far end equipment is reduced, the data transmission bandwidth between the near end equipment and the far end equipment is effectively reduced, and the transmission bandwidth and the performance benefit of the joint processing of the plurality of sites or the plurality of cells can be flexibly controlled because the mixed interface between the baseband processing unit and the baseband combination unit can transmit data of a plurality of interfaces.

Drawings

Fig. 1 is a schematic structural diagram of a baseband processing system according to an embodiment of the present invention;

fig. 2 is a schematic diagram of baseband signal processing according to another embodiment of the present invention;

fig. 3 is a schematic structural diagram of a baseband processing system according to another embodiment of the present invention;

fig. 4 is a schematic structural diagram of a baseband processing system according to another embodiment of the present invention;

fig. 5 is a flowchart of a baseband signal processing method according to another embodiment of the present invention;

fig. 6 is a flowchart of a baseband signal processing method according to another embodiment of the present invention;

fig. 7 is a schematic structural diagram of a base station according to another embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The baseband processing system, method and distributed base station of the embodiments of the present invention may be implemented by base station devices in various systems of communication systems, such as a base station (node B, abbreviated as NodeB) or an evolved node B (evolved node B, abbreviated as eNodeB).

Fig. 1 is a schematic structural diagram of a baseband processing system according to an embodiment of the present invention, and as shown in the figure, the baseband processing system may include at least one baseband processing unit 101 and a baseband combining unit 102, where each baseband processing unit 101 is connected to the baseband combining unit 102 through a hybrid transmission interface.

The baseband processing unit 101 may be disposed near the RRU at the far end, and connected to at least one RRU, for example, the baseband processing unit 101 is connected to multiple RRUs at the far end and at the same site or in the same cell, and the baseband combining unit 102 may be disposed at the near end, and connected to at least one baseband processing unit 101, and configured to process combined processing of signal data between multiple sites or multiple cells. The far end is the position adjacent to the antenna, the far end is far relative to the machine room, and the near end is the position deployed in the machine room.

In the uplink direction, uplink wireless signal data received from the RRU is sent to a base station control node after being processed by a baseband processing system in the uplink direction; and the downlink upper layer protocol data received from the base station control node in the downlink direction is sent to the RRU after the baseband processing system finishes the baseband signal processing in the downlink direction.

Referring to fig. 2, a schematic diagram of baseband signal processing is shown, and in an uplink direction, a baseband processing system sequentially performs the following steps on uplink radio signal data received from at least one remote radio unit RRU:

receiving and processing a middle radio frequency channel, removing a Cyclic Prefix (CP) head, and performing Fast Fourier Transform (FFT) on time domain data to frequency domain data conversion, wireless frame decoding processing, demodulation processing and decoding processing;

and then, the processing is carried out by an upper layer protocol in the uplink direction, such as: a Media Access Control (MAC) protocol and a Radio Link Control (RLC) protocol obtain upper layer protocol data which can be sent to a base station control node;

correspondingly, in the downlink direction, the baseband processing system processes downlink upper layer protocol data received from the base station control node by the following steps in sequence:

the downlink upper layer protocol data received from the base station control node is processed by the downlink upper layer protocol, for example: processing an MAC protocol and an RLC protocol;

then the following steps are carried out:

coding processing, modulation processing, wireless frame framing processing, Inverse Fast Fourier Transform (iFFT) processing, frequency domain data-to-time domain data conversion, CP header addition, and middle radio frequency channel transmission processing.

The baseband processing system may be configured to process uplink wireless signal data, and specifically includes:

the base band processing unit 101 is configured to perform pre-processing on uplink radio signal data received by at least one RRU connected to the base band processing unit to obtain data to be subjected to uplink joint processing, and transmit the data to be subjected to uplink joint processing to the base band joint unit 102 through a hybrid interface, where the pre-processing at least includes processing steps before radio frame decoding processing and radio frame decoding processing.

The baseband combining unit 102 is configured to complete uplink combining processing on data to be subjected to uplink combined processing received from the at least one baseband processing unit 101 to obtain upper layer protocol data that can be sent to the base station control node, where the uplink combined processing at least includes uplink upper layer protocol processing. The base station control node may be a base station controller or a core network.

The baseband processing system may also be configured to process downlink upper layer protocol data, and specifically includes:

a baseband combining unit 102, configured to complete downlink combining processing on downlink upper layer protocol data received from a base station control node to obtain downlink combined processing data, and transmit the downlink combined processing data to the baseband processing unit 101 through the hybrid interface, where the downlink combining processing at least includes downlink upper layer protocol processing;

a baseband processing unit 101, configured to perform post-processing on the downlink joint processing data received from the baseband joint unit 102 to obtain downlink radio signal data that can be sent to at least one RRU, where the post-processing at least includes each processing step after radio frame framing processing and radio frame framing processing.

For convenience of description, a plurality of interfaces may be divided between the different processing steps, for example, an uplink direction, an interface between the radio frame decoding process and the demodulation process may be a first interface, an interface between the demodulation process and the decoding process may be a second interface, and an interface between the decoding process and the upper layer protocol process may be a third interface; or,

in the downlink direction, an interface between the radio frame framing processing and the modulation processing may be used as a fourth interface, an interface between the modulation processing and the coding processing may be used as a fifth interface, and an interface between the coding processing and the upper layer protocol processing may be used as a sixth interface.

It can be seen that the signal data of the first interface is the signal data of the uplink wireless signal data that has been received by the baseband processing system and has been subjected to the radio frame decoding processing, the signal data of the second interface is the signal data of the baseband processing system that has further performed the demodulation processing on the signal data of the first interface, and the signal data of the third interface is the signal data of the baseband processing system that has further performed the decoding processing on the signal data of the second interface.

Similarly, the signal data of the sixth interface is signal data of which the baseband processing system has completed processing of the upper layer protocol in the downstream direction on the received downstream upper layer protocol data, the signal data of the fifth interface is signal data of which the baseband processing system has completed further encoding processing on the signal data of the sixth interface, and the signal data of the fourth interface is signal data of which the baseband processing system has completed further modulation processing on the signal data of the fifth interface.

It should be noted that the foregoing is only an example, and the baseband signal processing may also divide more interfaces between different processes, and the embodiment of the present invention is not limited thereto.

The processing steps of the baseband signal processing in the uplink direction or the downlink direction may be completed by the baseband processing unit 101, may be completed by the baseband combining unit 102, or may be completed by both the baseband processing unit 101 and the baseband combining unit 102.

For example, in the uplink direction, the baseband processing unit 101 completes radio frequency channel reception processing, Cyclic Prefix (CP) header removal, Fast Fourier Transform (FFT) conversion of time domain data to frequency domain data, and radio frame decoding processing, and the baseband combining unit 102 completes demodulation processing, decoding processing, and upper layer protocol processing; or,

in the downlink direction, the baseband processing unit 101 completes the transmission processing of the middle radio frequency channel, adds the CP header, and performs the conversion from frequency domain data to time domain data, the framing processing of the radio frame, and the modulation processing by the iFFT, and the baseband combining unit 102 completes the encoding processing and the upper layer protocol processing.

For another example, in the uplink direction, the baseband processing unit 101 completes radio frequency channel reception processing, Cyclic Prefix (CP) header removal, Fast Fourier Transform (FFT) conversion of time domain data to frequency domain data, radio frame decoding processing, and demodulation processing, and the baseband combining unit 102 completes decoding processing and upper layer protocol processing; or,

in the downlink direction, the baseband processing unit 101 completes the transmission processing of the middle radio frequency channel, adds the CP header, and performs the conversion from frequency domain data to time domain data and the framing processing of the radio frame by the iFFT, and the baseband combining unit 102 completes the modulation processing, the coding processing, and the upper protocol processing.

It should be noted that the above is only an example, and the embodiments of the present invention are not limited thereto.

In one embodiment of the invention, a baseband processing system is used to process the upstream wireless signal data. The baseband processing unit 101 may perform at least middle rf channel receiving processing, CP header removing, FFT, and radio frame decoding processing on the received uplink wireless signal data to obtain data to be processed by uplink joint processing, and the pre-processing of the baseband processing unit 101 may further include demodulation processing and decoding processing.

The data to be processed uplink jointly transmitted on the hybrid interface between the baseband processing unit 101 and the baseband combining unit 102 includes signal data of at least one interface, where the interface may be the aforementioned first interface, second interface, and third interface, or may be more other interfaces divided between different processes, for example, the data to be processed uplink jointly includes signal data of the first interface and signal data of the second interface, or for example, the data to be processed uplink jointly includes signal data of the first interface only, which should be noted that, this is only an example, and the embodiment of the present invention is not limited thereto.

A baseband combining unit 102, configured to perform, if the data to be subjected to uplink combined processing received from the baseband processing unit 101 includes data of a first interface, combined demodulation processing, combined decoding processing, and upper layer protocol processing in an uplink direction on the data of the first interface to obtain upper layer protocol data that can be sent to a base station control node; or,

if the data to be subjected to uplink joint processing received from the baseband processing unit 101 includes data of a second interface, performing joint decoding processing and upper layer protocol processing on the data of the second interface to obtain upper layer protocol data which can be sent to a base station control node; or,

if the data to be subjected to uplink joint processing received from the baseband processing unit 101 includes data of a third interface, the data of the third interface is subjected to upper layer protocol processing to obtain upper layer protocol data which can be sent to the base station control node.

It should be noted that, the above is only an example, if the data to be subjected to uplink joint processing includes signal data of other interfaces divided between different processing steps in the baseband signal processing in the uplink direction, the baseband joint unit 102 may complete subsequent processing steps corresponding to the interfaces on the signal data of the interfaces, and details are not described here.

When the uplink wireless signal data received from at least one RRU sequentially completes the processing steps of the baseband signal processing, the bandwidth of the data obtained after each step of the processing is sequentially reduced, for example, the bandwidth of the data obtained after the uplink wireless signal data is processed by the middle radio frequency channel is greater than the bandwidth of the data obtained after the uplink wireless signal data is processed by the radio frame deframing, the bandwidth of the data obtained after the uplink wireless signal data is processed by the radio frame deframing is greater than the data obtained after the uplink wireless signal data is processed by the decoding, and so on. That is, for the same input, that is, uplink radio signal data received from at least one RRU, the bandwidth of the obtained data of the first interface is greater than the bandwidth of the data of the second interface after being processed by the baseband processing system, and the bandwidth of the data of the second interface is greater than the bandwidth of the data of the third interface.

On the other hand, when the uplink radio signal data received from at least one RRU sequentially completes the above processing steps, when the data obtained after each step of processing and the data obtained after the corresponding step of processing of the uplink radio signal data of other sites or cells are processed according to different joint processing schemes, the performance gains of the uplink joint processing are different. For example, when the joint processing scheme of the uplink wireless signal data of multiple cells or sites is a combining processing scheme with the largest signal-to-noise ratio output by the receiving antenna, the performance benefit of the baseband joint unit 102 for the data after the uplink wireless signal data of multiple sites or cells is subjected to the radio frame decoding processing is higher than the performance benefit of the uplink joint processing performed on the data after the uplink wireless signal data is subjected to the radio frame decoding processing. That is to say, when the uplink wireless signal data joint processing scheme of multiple cells or sites is a combining processing scheme with the largest signal-to-noise ratio output by the receiving antenna, the performance benefit of the baseband joint unit 102 performing uplink joint processing on the data of the first interface in the uplink joint processing data is higher than the performance benefit of performing uplink joint processing on the data of the third interface in the uplink joint processing data.

In order to ensure that the uplink radio signal data received from at least one RRU can be completely sent to the baseband combining unit 102 after being processed by the baseband processing unit 101, the baseband processing unit 101 may be specifically configured to obtain data to be processed by uplink combining at least after performing radio frame de-framing processing on the uplink radio signal data received from at least one RRU according to the transmission bandwidth of the hybrid interface, and transmit the data to be processed by uplink combining to the baseband combining unit 102 through the hybrid interface.

The baseband processing unit 101 may include a first determining module and a first processing module, wherein,

the first determining module is specifically configured to determine, according to a transmission bandwidth of a hybrid interface between the baseband combining unit 102 and each interface, a ratio of signal data of each interface in the data to be processed by uplink combining, where the interface may be the aforementioned first interface, the second interface, or the third interface, and the baseband processing unit 101 may divide more other interfaces between different processes.

The first processing module is specifically configured to complete processing on uplink wireless signal data received from at least one RRU according to the ratio of the signal data of each interface determined by the first determining module in the data to be jointly processed in uplink to obtain the data to be jointly processed in uplink.

In another embodiment of the present invention, the first determining module is specifically configured to determine that all the data to be processed by uplink joint processing is the data of the first interface, that is, the proportion of the signal data of the first interface in the data to be processed by uplink joint processing is 100%, when the bandwidth of the hybrid interface between the baseband processing unit 101 and the baseband joint unit 102 is sufficient and the transmission of the data of the first interface obtained when the baseband processing unit 101 performs pre-processing on the uplink radio signal data received from at least one RRU is satisfied, that is, the transmission bandwidth of the hybrid interface between the baseband processing unit 101 and the baseband joint unit 102 is higher than the data bandwidth of the first interface.

In another embodiment of the present invention, the first determining module is specifically configured to, when a bandwidth of a hybrid interface between the baseband processing unit 101 and the baseband combining unit 102 is limited and cannot meet a requirement that the baseband processing unit 101 performs pre-processing on uplink radio signal data received from at least one RRU to obtain data of a first interface, that is, a transmission bandwidth of the hybrid interface between the baseband processing unit 101 and the baseband combining unit 102 is lower than or equal to a data bandwidth of the first interface, in order to ensure that all currently received uplink signal data of RRUs are transmitted to the baseband combining unit 102, a ratio of signal data of different interfaces in to-be-uplink combined processing data may be determined according to a preset rule. For example, the preset rule defines that the proportion of the signal data of the first interface in the data to be subjected to uplink joint processing is 50%, the proportion of the signal data of the second interface in the data to be subjected to uplink joint processing is 10%, and the proportion of the signal data of the third interface in the data to be subjected to uplink joint processing is 40%; the first processing module obtains signal data of a first interface after radio frame de-framing processing is completed on uplink wireless signal data received from at least one RRU, determines a part of signal data of the second interface from the signal data of the first interface after demodulation processing is completed according to the proportion of the signal data of the second interface in data to be subjected to uplink combined processing and the estimated bandwidth of the signal data of the second interface, and determines a part of signal data of the third interface from the signal data of the second interface after decoding processing is completed according to the proportion of the signal data of the third interface in the data to be subjected to uplink combined processing and the estimated bandwidth of the signal data of the third interface. After the pre-processing by the baseband processing unit 101, the signal data of the first interface accounts for 50%, the signal data of the second interface accounts for 10%, and the signal data of the third interface accounts for 40% of the data to be subjected to uplink joint processing.

For more clearly explaining the above processing process, it is assumed that the first processing module performs radio frame decoding on uplink signal data received from at least one RRU to obtain a bandwidth of first interface data of 2M bits per second (bps), a transmission bandwidth of a hybrid interface between the baseband processing unit 101 and the baseband combining unit 102 is 1.5Mbps, a bandwidth of signal data of a second interface obtained by demodulating signal data of the first interface is 0.6 times a bandwidth of signal data of the first interface, a bandwidth of signal data of a third interface obtained by decoding signal data of the second interface is 0.5 times a bandwidth of signal data of the second interface, the first determining module determines that a proportion of the signal data of the first interface in the uplink combined processing data to be processed is 50% and a proportion of the signal data of the second interface in the uplink combined processing data to be processed is 10% according to a preset rule, the ratio of the signal data of the third interface in the to-be-uplink joint processing data is 40%, the first processing module divides 0.5Mbps from the signal data of the first interface as a part of the to-be-uplink joint processing data, and the other 1.5Mbps is used for obtaining the signal data of the second interface through demodulation processing, at this time, the bandwidth of the signal data of the second interface is 1.5 mx 0.6=0.9Mbps, the first processing module determines 0.1Mbps from the signal data of the second interface as a part of the to-be-uplink joint processing data, and the other 0.8Mbps is used for obtaining the signal data of the third interface through decoding processing, and the bandwidth of the signal data of the third interface is 0.8 mx 0.5=0.4Mbps, so that the first processing module finishes processing the received uplink wireless signal data of at least one RRU to obtain the signal data of the first interface in the to-be-uplink joint processing data, and the signal data of the second interface is 0.5Mbps, the signal data of the third interface is 0.4Mbps, and the bandwidth of the data to be subjected to uplink joint processing is 1 Mbps. It should be noted that the above description is only exemplary, and the embodiments of the present invention are not limited thereto.

In another embodiment of the present invention, when a bandwidth of a hybrid interface between the baseband processing unit 101 and the baseband combining unit 102 is limited and cannot satisfy a requirement that a transmission bandwidth of a first interface obtained when the baseband processing unit 101 performs pre-processing on uplink wireless signal data received from at least one RRU, that is, a transmission bandwidth of the hybrid interface between the baseband processing unit 101 and the baseband combining unit 102 is lower than or equal to a data bandwidth of the first interface, the first determining module is specifically configured to obtain a joint processing scheme of currently received uplink wireless signal data, that is, a joint processing scheme of multiple sites or multiple cells corresponding to the baseband processing system, and determine, according to a ratio of signal data of different interfaces in the data to be processed and a corresponding relationship of performance gains of different joint processing schemes, and a joint processing scheme of currently received uplink wireless signal data, that signal data of different interfaces is in the data to be processed and uplink combined with the data to be processed The ratio of (a) to (b). For example, the joint processing scheme may be a combining processing scheme with the maximum signal-to-noise ratio output by the receiving antenna, which is referred to as a Maximum Ratio Combining (MRC) scheme, or may be a combining processing scheme with the maximum signal-to-interference ratio output by the receiving antenna, which is referred to as an Interference Rejection Combining (IRC) scheme, or may be an Interference Cancellation (IC) combining processing scheme, and it is to be noted that this is only an example, and other schemes may also be used for the joint processing scheme, and the embodiment of the present invention is not limited thereto.

For example, the corresponding relationship between the ratio of the signal data of different interfaces in the to-be-uplink joint processing data and the performance gains of different joint processing schemes is shown in the following table:

it should be noted that the ratio of the signal data of different interfaces in the data to be subjected to uplink joint processing and the corresponding relationship between the performance gains of different joint processing schemes may be estimated by the first determining module according to the corresponding model, or may be obtained in advance according to multiple times of test data, which is not limited in this embodiment of the present invention.

The first determining module is used for obtaining that the joint processing scheme of the currently received uplink wireless signal data is MRC, and determining that the proportion of the signal data of the first interface in the data to be subjected to uplink joint processing is 70%, the proportion of the signal data of the second interface is 10%, and the proportion of the signal data of the third interface is 20% according to the corresponding relation, wherein the MRC performance benefit is optimal; if the first determining module obtains that the joint processing scheme of the currently received uplink wireless signal data is IRC, according to the corresponding relation, the proportion of the signal data of the first interface in the data to be subjected to uplink joint processing is determined to be 60%, the proportion of the signal data of the second interface is determined to be 20%, and the proportion of the signal data of the third interface is determined to be 20%, and at the moment, the IRC performance benefit is optimal; by analogy, the description is omitted. It should be noted that the above is only an example, and the embodiments of the present invention are not limited thereto. The first processing module completes processing on the uplink wireless signal data currently received from the at least one RRU according to the ratio of the signal data of each interface in the data to be uplink jointly processed determined by the first determining module to obtain the data to be uplink jointly processed, which can refer to the foregoing embodiments and is not described herein again.

In another embodiment of the invention, a baseband processing system is used to process downstream upper layer protocol data. The baseband combining unit 102 may process the received downlink upper layer protocol data at least through the upper layer protocol in the downlink direction to obtain downlink combined processing data, and of course, the downlink combined processing of the baseband combining unit 102 may further include coding processing and modulation processing.

The downlink joint processing data transmitted on the hybrid interface between the baseband processing unit 101 and the baseband joint unit 102 includes signal data of at least one interface, where the interface may be the aforementioned fourth interface, fifth interface, and sixth interface, or may be more other interfaces divided between different processes, for example, the downlink joint processing data includes signal data of the fourth interface and signal data of the sixth interface, and for example, the downlink joint processing data includes only signal data of the fourth interface, which is only an example, and the embodiments of the present invention are not limited thereto.

The baseband processing unit 101, if the downlink joint processing data received from the baseband joint unit 102 includes data of the fourth interface, performs radio frame framing processing and processing steps after the radio frame framing processing on the data of the fourth interface to obtain downlink radio signal data that can be sent to the RRU; or,

if the downlink joint processing data received from the baseband joint unit 102 includes data of a fifth interface, the data of the fifth interface is subjected to modulation processing, radio frame framing processing and processing steps after the radio frame framing processing to obtain downlink radio signal data which can be sent to the RRU; or,

if the downlink joint processing data received from the baseband joint unit 102 includes data of a sixth interface, the data of the sixth interface is subjected to encoding processing, modulation processing, radio frame framing processing and processing steps after the radio frame framing processing to obtain downlink radio signal data capable of being sent to the RRU.

It should be noted that, the above is only an example, if the downlink joint processing data includes signal data of other interfaces divided between different processing steps in the baseband signal processing in the downlink direction, the baseband processing unit 101 may complete subsequent processing steps corresponding to the interfaces on the signal data of the interfaces, and details are not described herein again.

When the processing steps of the baseband signal processing are sequentially completed by the downlink upper layer protocol data received from the base station control node, the bandwidth of the data obtained after each step of processing is sequentially increased, for example, the bandwidth of the data obtained after the downlink upper layer protocol data is processed by the downlink upper layer protocol is smaller than the bandwidth of the data obtained after the encoding processing, the bandwidth of the data obtained after the downlink upper layer protocol data is processed by the encoding processing is smaller than the bandwidth of the data obtained after the modulation processing, and so on. That is, for the same input, that is, the downlink upper layer protocol data received from the base station control node is processed by the baseband processing system, the bandwidth of the data of the fourth interface is greater than that of the data of the fifth interface, and the bandwidth of the data of the fifth interface is greater than that of the data of the sixth interface.

On the other hand, similar to the uplink direction, when the processing steps are sequentially completed by the downlink upper layer protocol data received from the base station control node, the performance gains are different when the downlink joint processing is performed on the data obtained after each step of processing and the data obtained after the corresponding step processing is performed on the downlink upper layer protocol data of other sites or cells according to different joint processing schemes.

In order to ensure that the downlink and upper layer protocol data received from the base station control node at present can be completely sent to the baseband processing unit 101 after being processed by the baseband combining unit 102, the baseband combining unit 102 may be specifically configured to obtain the downlink combined processing data by processing the downlink and upper layer protocol data received from the base station control node at least by an upper layer protocol in a downlink direction according to a transmission bandwidth of a hybrid interface, and transmit the downlink combined processing data to the baseband processing unit 101 through the hybrid interface.

The baseband combining unit 102 may comprise a second determining module and a second processing module, wherein,

the second determining module is specifically configured to determine, according to a transmission bandwidth of a hybrid interface between the baseband processing unit 101 and each interface, a ratio of signal data of each interface in the downlink joint processing data, where the interface may be the aforementioned fourth interface, or the fifth interface, or the sixth interface, and the baseband joint unit 102 may divide more other interfaces between different processes.

And the second processing module is specifically configured to complete processing on the downlink and upper layer protocol data received from the base station control node according to the ratio of the signal data of each interface determined by the second determining module in the downlink combined processing data to obtain the downlink combined processing data.

In another embodiment of the present invention, the second determining module is specifically configured to, when a bandwidth of a hybrid interface between the baseband processing unit 101 and the baseband combining unit 102 is sufficient and transmission of data of a fourth interface obtained when the baseband combining unit 102 performs downlink combining processing on downlink upper layer protocol data received from the base station control node is satisfied, that is, when a transmission bandwidth of the hybrid interface between the baseband processing unit 101 and the baseband combining unit 102 is higher than a data bandwidth of the fourth interface, determine that all of the downlink combined processing data is data of the fourth interface, that is, a proportion of signal data of the fourth interface in the downlink combined processing data is 100%.

In another embodiment of the present invention, the second determining module is specifically configured to, when a bandwidth of a hybrid interface between the baseband processing unit 101 and the baseband combining unit 102 is limited and cannot meet a requirement for transmission of data of a fourth interface obtained when the baseband processing unit 101 performs downlink combining processing on downlink upper layer protocol data received from the base station control node, that is, a transmission bandwidth of the hybrid interface between the baseband processing unit 101 and the baseband combining unit 102 is lower than or equal to a data bandwidth of the fourth interface, in order to ensure that the downlink upper layer protocol data currently received from the base station control node is all transmitted to the baseband processing unit 101 after the downlink combining processing by the baseband combining unit 102, a ratio of signal data of different interfaces in the downlink combined processing data may be determined according to a preset rule. For example, the preset rule defines that the proportion of the signal data of the fourth interface in the downlink joint processing data is 50%, the proportion of the signal data of the fifth interface in the downlink joint processing data is 10%, and the proportion of the signal data of the sixth interface in the downlink joint processing data is 40%; the second processing module obtains signal data of a sixth interface after finishing upper layer protocol processing in a downlink direction on downlink upper layer protocol data received from the base station control node, determines a part of signal data of the fifth interface obtained after completing coding processing from the signal data of the sixth interface according to the proportion of the signal data of the fifth interface in the downlink combined processing data and the estimated bandwidth of the signal data of the fifth interface, and determines a part of signal data of the fourth interface obtained after completing modulation processing from the signal data of the fifth interface according to the proportion of the signal data of the fourth interface in the downlink combined processing data and the estimated bandwidth of the signal data of the fourth interface. After being processed by the baseband combination unit 102, the downlink combination processing data includes 50% of signal data of the fourth interface, 10% of signal data of the fifth interface, and 40% of signal data of the sixth interface.

To more clearly describe the above processing process, it is assumed that the bandwidth of the sixth interface data obtained by the second processing module after the downlink upper layer protocol data received from the base station control node is subjected to the upper layer protocol processing in the downlink direction is 0.6M bits per second (bps), the transmission bandwidth of the hybrid interface between the baseband processing unit 101 and the baseband combining unit 102 is 1.5Mbps, the bandwidth of the signal data of the fifth interface is 0.6 times of the bandwidth of the signal data of the fourth interface, and the bandwidth of the signal data of the sixth interface is 0.5 times of the bandwidth of the signal data of the fifth interface, so that it can be estimated that the bandwidth of the fourth interface data obtained by subjecting all the downlink upper layer protocol data received from the base station control node to the upper layer protocol processing, the encoding processing, and the modulation processing in the downlink direction is 2Mbps, the second determining module determines the proportion of the signal data of the fourth interface in the downlink combined processing data according to the preset rule to be 50 Mbps, the ratio of the signal data of the fifth interface in the downlink combined processing data is 10%, the ratio of the signal data of the sixth interface in the downlink combined processing data is 40%, the second processing module divides 0.4Mbps from the signal data of the sixth interface as a part of the downlink combined processing data, and 0.2Mbps is used for obtaining the signal data of the fifth interface through encoding processing, at this time, the bandwidth of the signal data of the fifth interface is 0.2M/0.5=0.4Mbps, the second processing module determines 0.1Mbps from the signal data of the fifth interface as a part of the downlink combined processing data, and 0.3Mbps is used for obtaining the signal data of the fourth interface through modulation processing, and the bandwidth of the signal data of the fourth interface is 0.3M/0.6=0.5Mbps, so that the second processing module has 0.5Mbps for the signal data of the fourth interface in the downlink combined processing data obtained by completing processing on the downlink upper layer protocol data received from the base station control node, the signal data of the fifth interface is 0.1Mbps, the signal data of the sixth interface is 0.4Mbps, and the bandwidth of the downlink joint processing data is 1 Mbps. It should be noted that the above values are merely exemplary, and the embodiments of the present invention are not limited thereto.

In another embodiment of the present invention, when the bandwidth of the hybrid interface between the baseband processing unit 101 and the baseband combining unit 102 is limited, which cannot satisfy the transmission of the data of the fourth interface obtained when the baseband combining unit 102 performs downlink combining processing on the downlink upper layer protocol data received from the base station control node, that is, the transmission bandwidth of the hybrid interface between the baseband processing unit 101 and the baseband combining unit 102 is lower than or equal to the data bandwidth of the fourth interface, the second determining module is specifically configured to obtain a combined processing scheme of multiple sites or multiple cells corresponding to the current baseband processing system, and determining the proportions of the signal data of different interfaces in the downlink combined processing data according to the corresponding relation between the proportions of the signal data of different interfaces in the downlink combined processing data and the performance benefits of different combined processing methods and the obtained combined processing scheme. Similar to the uplink direction, it is not described here.

It should be noted that the ratio of the signal data of different interfaces in the downlink joint processing data and the corresponding relationship between the performance gains of different joint processing methods may be estimated by the second determining module according to the corresponding model, or may be obtained in advance according to multiple times of test data, which is not limited in this embodiment of the present invention.

The second processing module completes processing on the downlink upper layer protocol data currently received from the base station control node according to the proportion of the signal data of each interface in the downlink joint processing data determined by the second determining module to obtain the downlink joint processing data, which may refer to the foregoing embodiments and is not described herein again.

When the baseband processing system of the embodiment of the invention is used for processing the baseband signals in the uplink direction, the baseband processing unit is arranged near the RRU at the far end to complete the pre-processing of the uplink wireless signal data, so that the bandwidth of the data to be subjected to uplink combined processing transmitted to a plurality of sites or a plurality of cells of the near-end baseband combined unit is reduced, and the data transmission bandwidth between the near-end equipment and the far-end equipment is effectively reduced. For example, in a 20MHz bandwidth system, there are 3 sectors, each RRU is configured with 4 antennas, and the data transmission rate between the BBU at the near end and the RRU at the far end in the prior art will be as high as 11.8Gbps, whereas with the baseband processing system of the embodiment of the present invention, since the pre-processing is completed in the baseband processing unit, for example, after the CP header removal, FFT, frame decoding processing are completed in the baseband processing unit, and then the pre-processing is sent to the baseband combining unit, the data bandwidth of the hybrid interface between the baseband processing unit at the far end and the baseband combining unit at the near end can be reduced to 6.5Gbps, that is, with the new configuration, the bandwidth required for transmitting the time-domain baseband digital signal is compressed by about 45%. And because the mixed interface between the baseband processing unit and the baseband combination unit can transmit data of various interfaces, the transmission bandwidth and the performance benefit of the combined processing of a plurality of sites or a plurality of cells can be flexibly controlled. The baseband processing system of the embodiment of the invention can also be used for processing the baseband signals in the downlink direction, and the effects are similar and are not described again.

Fig. 3 is a schematic structural diagram of a baseband processing system according to another embodiment of the present invention, and as shown in the figure, the baseband processing system may include a baseband combining unit 302 and at least one baseband processing unit 301, and each baseband processing unit 301 is connected to the baseband combining unit 302 through a hybrid transmission interface.

The baseband processing unit 301 may be disposed near the RRU at the far end, and connected to at least one RRU, for example, the baseband processing unit 301 may be connected to multiple RRUs at the far end and at the same site or in the same cell, and the baseband combining unit 302 may be disposed at the near end, and connected to at least one baseband processing unit 301, and configured to process combined processing of signal data between multiple sites or multiple cells. The far end is the position adjacent to the antenna, the far end is far relative to the machine room, and the near end is the position deployed in the machine room. Wherein,

the baseband processing unit 301 includes a first memory 3011 and a first processor 3012, and the first memory 3011 is connected to the first processor 3012, where the first memory 3011 stores a set of program codes, and the first memory 3011 may include a non-volatile memory. The first processor 3012 may be a CPU, or ASIC, or one or more integrated circuits configured to implement embodiments of the present invention. The first processor 3012 is configured to call the program code stored in the first memory 3011, and is configured to perform:

pre-processing uplink wireless signal data received by at least one RRU connected with the baseband processing unit to obtain data to be subjected to uplink joint processing, and transmitting the data to be subjected to uplink joint processing to the baseband joint unit 302 through a hybrid interface, wherein the pre-processing at least comprises each processing step before wireless frame de-framing processing and wireless frame de-framing processing;

the baseband combining unit 302 includes a second memory 3021 and a second processor 3022, and the second memory 3021 is connected to the second processor 3022, wherein the second memory 3021 stores a set of program codes therein, and the second memory 3021 may include a nonvolatile memory. The second processor 3022 may be a CPU, or an ASIC, or one or more integrated circuits configured to implement embodiments of the present invention. The second processor 3022 is configured to call the program code stored in the second memory 3021 to perform:

after the uplink joint processing is completed on the data to be subjected to uplink joint processing received from the at least one baseband processing unit 301, upper layer protocol data that can occur to the base station control node is obtained, where the uplink joint processing at least includes uplink direction upper layer protocol processing.

Each component in the baseband processing system according to the embodiment of the present invention may be configured to implement the function of the corresponding component in the foregoing embodiment, and the implementation principle and the technical effect are similar to each other, which may be referred to the relevant description in the foregoing embodiment and are not described herein again.

Fig. 4 is a schematic structural diagram of a baseband processing system according to another embodiment of the present invention, and as shown in the figure, the baseband processing system may include a baseband combining unit 402 and at least one baseband processing unit 401, and each baseband processing unit 401 is connected to the baseband combining unit 402 through a hybrid transmission interface.

The baseband processing unit 401 may be disposed near an RRU at a far end, and connected to at least one RRU, for example, the baseband processing unit 401 may be connected to multiple RRUs at the far end and at the same site or in the same cell, and the baseband combining unit 402 may be disposed at the near end, and connected to at least one baseband processing unit 401, and configured to process combined processing of signal data between multiple sites or multiple cells. The far end is the position adjacent to the antenna, the far end is far relative to the machine room, and the near end is the position deployed in the machine room. Wherein,

the baseband processing unit 401 includes a first memory 4011 and a first processor 4012, and the first memory 4011 is connected to the first processor 4012, wherein the first memory 4011 stores a set of program codes therein, and the first memory 4011 may include a nonvolatile memory. The first processor 4012 may be a CPU, or ASIC, or one or more integrated circuits configured to implement embodiments of the present invention. The first processor 4012 is configured to call the program code stored in the first memory 4011, and is configured to perform:

the downlink joint processing data received from the baseband joint unit 402 is post-processed to obtain downlink radio signal data that can be sent to at least one RRU, where the post-processing at least includes each processing step after radio frame framing processing and radio frame framing processing.

The baseband combining unit 402 includes a second memory 4021 and a second processor 4022, and the second memory 4021 is connected to the second processor 4022, wherein the second memory 4021 stores a set of program codes, and the second memory 4021 may include a non-volatile memory. The second processor 4022 may be a CPU, or an ASIC, or one or more integrated circuits configured to implement embodiments of the present invention. The second processor 4022 is configured to call the program code stored in the second memory 4021, and to execute:

downlink joint processing is performed on downlink upper layer protocol data received from a base station control node to obtain downlink joint processing data, and the downlink joint processing data is transmitted to a baseband processing unit 401 through a hybrid interface, wherein the downlink joint processing at least includes downlink upper layer protocol processing.

Fig. 5 is a flowchart of a baseband signal processing method according to another embodiment of the present invention, for a baseband processing system to process uplink wireless signal data, where as shown in the figure, the method may include:

step 501, a baseband processing unit in the baseband processing system performs pre-processing on uplink radio signal data received by at least one RRU connected to the baseband processing unit to obtain data to be processed by uplink joint processing, and transmits the data to be processed by uplink joint processing to the baseband joint unit through a hybrid interface, where the pre-processing at least includes processing steps before radio frame de-framing processing and radio frame de-framing processing.

Step 502, a baseband combination unit in the baseband processing system completes uplink combination processing on data to be subjected to uplink combination processing received from at least one baseband processing unit to obtain upper layer protocol data which can be generated to a base station control node, wherein the uplink combination processing at least comprises upper layer protocol processing.

The baseband signal processing method provided by the embodiment of the present invention may be executed by the baseband processing system provided in fig. 1 or fig. 3, and for a detailed description of each step, reference may be made to the description of the embodiment shown in fig. 1 or fig. 3, which is not described herein again.

The baseband signal information processing method provided by the embodiment of the invention is executed by a baseband processing system, and the baseband processing unit is arranged near an RRU at a far end to complete the pre-processing of uplink wireless signal data, so that the bandwidth of data to be subjected to uplink joint processing transmitted to a plurality of sites or a plurality of cells of a near-end baseband joint unit is reduced, the data transmission bandwidth between near-end equipment and far-end equipment is effectively reduced, and a mixed interface between the baseband processing unit and the baseband joint unit can transmit data of a plurality of interfaces, and the transmission bandwidth and the performance benefit of joint processing of the sites or the cells can be flexibly controlled.

Fig. 6 is a flowchart of a baseband signal processing method according to another embodiment of the present invention, where the baseband processing system processes downlink upper layer protocol data, and as shown in the figure, the method may include:

step 601, a baseband combination unit in the baseband processing system performs downlink combination processing on downlink upper layer protocol data received from a base station control node to obtain downlink combination processing data, and transmits the downlink combination processing data to the baseband processing unit through a hybrid interface between the baseband combination unit and the baseband processing unit, wherein the downlink combination processing at least includes downlink upper layer protocol processing.

Step 602, the baseband processing unit in the baseband processing system performs post-processing on the downlink joint processing data received from the baseband joint unit to obtain downlink radio signal data that can be sent to at least one RRU, where the post-processing at least includes each processing step after radio frame framing processing and radio frame framing processing.

The baseband signal processing method provided by the embodiment of the present invention may be executed by the baseband processing system provided in fig. 1 or fig. 4, and for a detailed description of each step, reference may be made to the description of the embodiment shown in fig. 1 or fig. 4, which is not described herein again.

The baseband signal information processing method provided by the embodiment of the invention is executed by a baseband processing system, because the downlink joint processing is completed in a near-end baseband joint unit, and the baseband processing unit arranged near an RRU at a far end completes the post processing, the joint processing data bandwidth of a plurality of sites or a plurality of cells transmitted between near-end equipment and far-end equipment is reduced, the data transmission bandwidth between the near-end equipment and the far-end equipment is effectively reduced, and because a mixed interface between the baseband processing unit and the baseband joint unit can transmit data of a plurality of interfaces, the transmission bandwidth and the performance benefit of the joint processing of the plurality of sites or the plurality of cells can be flexibly controlled.

Fig. 7 is a schematic structural diagram of a base station according to another embodiment of the present invention, and as shown in the drawing, the base station may include:

at least one RRU701 and a baseband processing system 702, wherein each baseband processing unit in the baseband processing system 702 is connected to at least one RRU701 at a far end, and a baseband combining unit in the baseband processing system 702 is deployed at a near end.

The RRUs 701 connected to each baseband processing unit may be RRUs of the same site or the same cell.

The baseband processing system 702 may be the baseband processing system shown in fig. 1, fig. 3, or fig. 4, and since the baseband processing system has already been described in the foregoing embodiment, no further description is provided here.

In the base station provided by the embodiment of the invention, the baseband processing unit is deployed on the RRU close to the same site or the same cell at the far end to complete the pre-processing of the uplink wireless signal data or the post-processing of the downlink data, so that the bandwidth of the joint processing data transmitted to a plurality of sites or a plurality of cells of the near-end baseband joint unit is reduced, the data transmission bandwidth between the near-end equipment and the far-end equipment is effectively reduced, and the mixed interface between the baseband processing unit and the baseband joint unit can transmit data of a plurality of interfaces, so that the transmission bandwidth and the performance benefit of the joint processing of the plurality of sites or the plurality of cells can be flexibly controlled.

From the above description of the embodiments, it is clear to those skilled in the art that the present invention can be implemented by hardware, firmware, or a combination thereof. When implemented in software, the functions described above may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage media may be any available media that can be accessed by a computer. Taking this as an example but not limiting: computer-readable media can include RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer. Furthermore, the method is simple. Any connection is properly termed a computer-readable medium. For example, if software is transmitted from a website, a server, or other remote source using a coaxial cable, a fiber optic cable, a twisted pair, a Digital Subscriber Line (DSL), or a wireless technology such as infrared, radio, and microwave, the coaxial cable, the fiber optic cable, the twisted pair, the DSL, or the wireless technology such as infrared, radio, and microwave are included in the fixation of the medium. Disk and disc, as used herein, includes Compact Disc (CD), laser disc, optical disc, Digital Versatile Disc (DVD), floppy Disk and blu-ray disc where disks usually reproduce data magnetically, while discs reproduce data optically with lasers. Combinations of the above should also be included within the scope of computer-readable media.

In short, the above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A baseband processing system comprising a baseband combining unit and at least one baseband processing unit, wherein,

each base band processing unit is connected with at least one remote radio frequency unit RRU at a remote end,

the baseband combination unit is positioned at the near end and is connected with at least one baseband processing unit through a hybrid interface;

when the baseband processing system processes the uplink wireless signal data,

the baseband processing unit is configured to perform pre-processing on uplink radio signal data received from at least one RRU to obtain data to be subjected to uplink joint processing, and transmit the data to be subjected to uplink joint processing to the baseband joint unit through the hybrid interface, where the pre-processing at least includes processing steps before radio frame decoding processing and radio frame decoding processing, and the baseband processing unit includes a first determining module and a first processing module:

the first determining module is configured to determine, according to the transmission bandwidth of the hybrid interface, a proportion of signal data of different interfaces in the to-be-uplink joint processing data, where the different interfaces at least include one of: a first interface, a second interface and a third interface,

the first processing module is configured to perform pre-processing on the uplink radio signal data received from the at least one RRU according to the ratio of the signal data of each interface determined by the first determining module in the data to be jointly processed for uplink to obtain data to be jointly processed for uplink,

the different interfaces include at least one of: the wireless communication device comprises a first interface, a second interface and a third interface, wherein the first interface is an interface between radio frame decoding processing and demodulation processing, the second interface is an interface between demodulation processing and decoding processing, and the third interface is an interface between decoding processing and upper layer protocol processing;

the baseband combination unit is configured to complete uplink combination processing on the data to be subjected to uplink combination processing received from the at least one baseband processing unit to obtain upper layer protocol data that can be sent to a base station control node, where the uplink combination processing at least includes uplink upper layer protocol processing; or,

the baseband combination unit is configured to complete downlink combination processing on downlink upper layer protocol data received from the base station control node to obtain downlink combination processing data, and transmit the downlink combination processing data to the baseband processing unit through the hybrid interface, where the downlink combination processing at least includes downlink upper layer protocol processing, and the baseband combination unit includes a second determining module and a second processing module,

the second determining module is configured to determine, according to the transmission bandwidth of the hybrid interface, a proportion of signal data of different interfaces in the downlink joint processing data, where the different interfaces at least include one of: a fourth interface, a fifth interface and a sixth interface,

the second processing module is configured to complete downlink joint processing on the downlink upper layer protocol data received from the base station control node according to the ratio of the signal data of each interface determined by the second determining module in the downlink joint processing data, and obtain the downlink joint processing data, where the different interfaces at least include one of: the wireless network device comprises a fourth interface, a fifth interface and a sixth interface, wherein the fourth interface is an interface between wireless frame framing processing and modulation processing, the fifth interface is an interface between modulation processing and coding processing, and the sixth interface is an interface between coding processing and upper layer protocol processing;

the baseband processing unit is configured to perform post-processing on the downlink joint processing data received from the baseband joint unit to obtain downlink radio signal data that can be sent to at least one RRU, where the post-processing at least includes processing steps after radio frame framing processing and radio frame framing processing.

2. The baseband processing system according to claim 1, wherein the data to be processed by uplink joint processing at least comprises signal data of one of the following interfaces: a first interface, a second interface, and a third interface.

3. The baseband processing system according to claim 1, wherein said first determining module, in particular,

if the transmission bandwidth of the hybrid interface is lower than or equal to the data bandwidth of the first interface, determining the proportion of signal data of different interfaces in the data to be subjected to uplink joint processing according to a preset rule; or,

wherein,

4. The baseband processing system according to any of claims 1 to 3, wherein the baseband combining unit is specifically configured to:

if the data to be subjected to uplink joint processing comprises data of a first interface, performing joint demodulation processing, joint decoding processing and uplink upper-layer protocol processing on the data of the first interface to obtain upper-layer protocol data which can be sent to a base station control node; or,

if the data to be subjected to uplink joint processing comprises data of a second interface, performing joint decoding processing and uplink upper layer protocol processing on the data of the second interface to obtain upper layer protocol data which can be sent to a base station control node; or,

and if the data to be subjected to uplink joint processing comprises data of a third interface, processing the data of the third interface by an upper layer protocol in an uplink direction to obtain upper layer protocol data which can be sent to a base station control node.

5. The baseband processing system according to claim 1, wherein said downlink joint processing data comprises at least one of signal data of the following interfaces: a fourth interface, a fifth interface and a sixth interface.

6. The baseband processing system according to claim 5, wherein said second determining module is specifically configured to,

wherein,

7. The baseband processing system according to any one of claims 1, 5 or 6, wherein the baseband processing unit is specifically configured to:

8. The baseband processing system according to any of claims 1 to 3, wherein said base station control node is a base station controller or a core network.

9. A method of baseband signal processing, the method comprising:

a baseband processing unit in the baseband processing system determines, according to a transmission bandwidth of a hybrid interface, a proportion of signal data of different interfaces in joint processing data to be uplink processed, performs pre-processing on uplink radio signal data received by at least one RRU connected to the baseband processing unit according to the proportion of the signal data of the different interfaces in the joint processing data to be uplink processed to obtain the joint processing data to be uplink processed, and transmits the joint processing data to be uplink processed to the baseband processing unit through the hybrid interface, where the pre-processing at least includes processing steps before radio frame de-framing processing and radio frame de-framing processing, and the different interfaces at least include one of: the wireless communication device comprises a first interface, a second interface and a third interface, wherein the first interface is an interface between wireless frame decoding processing and demodulation processing, the second interface is an interface between demodulation processing and decoding processing, and the third interface is an interface between decoding processing and upper layer protocol processing;

a baseband combination unit in the baseband processing system completes uplink combination processing on the data to be subjected to uplink combination processing received from at least one baseband processing unit to obtain upper layer protocol data which can be generated to a base station control node, wherein the uplink combination processing at least comprises uplink upper layer protocol processing; or,

a baseband combination unit in the baseband processing system determines, according to a transmission bandwidth of the hybrid interface, a proportion of signal data of different interfaces in downlink combined processing data, and according to the proportion of the signal data of different interfaces in the downlink combined processing data, performs downlink combined processing on downlink upper layer protocol data received from the base station control node to obtain the downlink combined processing data, and transmits the downlink combined processing data to the baseband processing unit through the hybrid interface, where the downlink combined processing at least includes downlink upper layer protocol processing, and the different interfaces at least include one of: the wireless network device comprises a fourth interface, a fifth interface and a sixth interface, wherein the fourth interface is an interface between wireless frame framing processing and modulation processing, the fifth interface is an interface between modulation processing and coding processing, and the sixth interface is an interface between coding processing and upper layer protocol processing;

10. The method of claim 9, wherein the uplink joint processing data comprises at least one of the following interface signal data: a first interface, a second interface, and a third interface.

11. The method according to claim 9, wherein the determining, according to the transmission bandwidth of the hybrid interface, the proportion of the signal data of different interfaces in the data to be processed jointly upstream includes:

wherein,

12. The method according to any one of claims 9 to 11, wherein a baseband combining unit in the baseband processing system obtains upper layer protocol data that can be generated to a base station control node after uplink combining processing is completed on the data to be uplink combined and processed received from at least one baseband processing unit, and includes:

13. The method of claim 9, wherein the downlink joint processing data comprises at least one of signal data of the following interfaces: a fourth interface, a fifth interface and a sixth interface.

14. The method of claim 9, wherein the determining the ratio of the signal data of different interfaces in the downlink joint processing data according to the transmission bandwidth of the hybrid interface comprises:

wherein,

15. The method of any one of claims 9,13 or 14, wherein a baseband processing unit in the baseband processing system performs post-processing on the downlink joint processing data received from the baseband joint unit to obtain downlink radio signal data that can be sent to at least one RRU, and the method includes:

16. The method according to any of claims 9 to 11, wherein the base station control node is a base station controller or a core network.

17. A base station, characterized in that the base station comprises:

at least one remote radio unit, RRU, the baseband processing system according to any of claims 1 to 8, wherein each baseband processing unit in the baseband processing system is connected to at least one RRU at a remote end, and a baseband combining unit in the baseband processing system is deployed at a near end.

18. The base station of claim 17, wherein the RRUs connected to each baseband processing unit are RRUs of the same site or the same cell.