WO2018103605A1

WO2018103605A1 - Data transmission method and device

Info

Publication number: WO2018103605A1
Application number: PCT/CN2017/114453
Authority: WO
Inventors: 王红展; 王帆; 刘祝垣; 皮强; 卢伟
Original assignee: 中兴通讯股份有限公司
Priority date: 2016-12-08
Filing date: 2017-12-04
Publication date: 2018-06-14
Also published as: CN108184238B; CN108184238A

Abstract

A data transmission method comprises: in a sending direction, each base band unit of a plurality of the base band units processing data of a pre-set number of virtual cells, and sending the processed data to an interface unit, wherein the virtual cells are cells divided by high-frequency cells according to the number of sub-frames comprised by a super sub-frame in a communication system, and the interface unit caches the received data of the base band unit, and within a frame period of the super sub-frame, sends the data of the plurality of the base band units to a radio frequency unit within a frame period of one super sub-frame; alternatively in a receiving direction, the interface unit receiving and caching data sent by the radio frequency unit, and within a frame period of the super sub-frame, distributing the cached data to each of the base band unit according to a predetermined sequence, and each base band unit receiving the data sent by the interface unit, and distributing the data to each virtual cell of the pre-set number of the virtual cells.

Description

Data transmission method and device

Technical field

The present disclosure relates to, but is not limited to, the field of communication technologies, and in particular, to a data transmission method and apparatus.

Background technique

In the third-generation UTRAN (UMTS Terrestrial Radio Access Network) and the fourth-generation LTE (Long Term Evolution) mobile communication system, the frequency band used is generally not more than 4 GHz. Most are below 3 GHz, and most of the frequency bands in this band are already occupied, and the utilization rate for the high frequency band is very low.

Summary of the invention

The following is an overview of the topics detailed in this document. This Summary is not intended to limit the scope of the claims.

The embodiments of the present disclosure provide a data transmission method and apparatus, which can avoid single-baseband board processing when using ultra-high frequency band for communication, resulting in high hardware cost.

The frequency band of mobile communication is mentioned above 10G, even above 20G, and the available bandwidth can also be allocated in advance, the bandwidth can reach 500MHz, and even exceed 1GHz, which has high requirements for the processing capability of the baseband and the storage of the radio frequency. However, in general, it will be solved by multiplying the baseband processing capability of the single baseband board, which will affect the hardware structure of the system and the hardware cost is high.

An embodiment of the present disclosure provides a data transmission method, including:

In the sending direction, each of the plurality of baseband units processes data of a preset number of virtual cells, and sends the processed data to the interface unit; wherein the virtual cell is a high frequency cell according to the super system a cell divided by the number of subframes included in the subframe; the interface unit buffers data of the received baseband unit, and transmits data of the multiple baseband units to the radio frequency unit in a frame period of one super subframe ;or,

In the receiving direction, the interface unit receives and buffers data sent by the radio frequency unit, and distributes the buffered data to each of the baseband units in a predetermined order in a frame period of one super subframe; Each baseband unit receives data sent by the interface unit and the data is Distributing to each virtual cell in the preset number of virtual cells; or

In the sending direction, each of the plurality of baseband units processes data of a preset number of virtual cells, and sends the processed data to the interface unit; wherein the virtual cell is a high frequency cell according to the super system a cell divided by the number of subframes included in the subframe; the interface unit buffers data of the received baseband unit, and transmits data of the multiple baseband units to the radio frequency unit in a frame period of one super subframe And, in the receiving direction, the interface unit receives and buffers data sent by the radio frequency unit, and distributes the buffered data to each of the baseband units in a predetermined order in a frame period of one super subframe. Each of the baseband units receives data sent by the interface unit, and distributes the data to each of the preset number of virtual cells.

In an exemplary embodiment, when the baseband unit sends data to the interface unit or the interface unit sends data to the baseband unit, time-sharing is performed according to a preset segmentation time; wherein the pre-preparation The segmentation timing is determined based on the frame period and the number of baseband units.

In an exemplary embodiment, the number of baseband units is determined according to the number of virtual cells and the number of virtual cells processed by each baseband unit.

In an exemplary embodiment, the interface unit uses a set of data buffers for buffering in the sending direction and the receiving direction when buffering the received data.

In an exemplary embodiment, the data buffer includes two storage modules, and each storage module has a storage space of at least k*s symbols; wherein k is a preset of the virtual cell processed by the baseband unit Number; s is the number of symbols included in the super subframe.

The embodiment of the present disclosure further provides a data transmission apparatus, including a plurality of baseband units, an interface unit, and a radio frequency unit, where:

Each of the baseband units is configured to: process a preset number of virtual cell data, and send the processed data to the interface unit, where the virtual cell is a high frequency cell according to the communication. a cell divided by the number of subframes included in the super subframe in the system; or each of the baseband units, in the receiving direction, configured to: receive data sent by the interface unit, and distribute the received data to the pre- Or each of the baseband units is configured to: process a preset number of virtual cell data, and send the processed data to the interface in a sending direction. a unit, where the virtual cell is a cell divided by a number of subframes included in a super subframe of a communication system in a high frequency cell; in the receiving direction, it is set to: receive the interface Data sent by the unit, and the received data is distributed to each virtual cell in the preset number of virtual cells;

The interface unit is configured to: buffer the received data of the baseband unit, and send data of the multiple baseband units to the radio frequency unit in a frame period of one super subframe; Or the interface unit is configured to receive and buffer data sent by the radio frequency unit in a receiving direction, and distribute the buffered data to each of the cached data in a predetermined sequence in a frame period of a super subframe. In the baseband unit, or in the sending direction, the interface unit is configured to: buffer the received data of the baseband unit, and send data of the multiple baseband units in a frame period of one super subframe To the radio frequency unit; in the receiving direction, configured to: receive and buffer data sent by the radio frequency unit, and distribute the buffered data to each of the basebands in a predetermined order in a frame period of a super subframe In the unit;

The radio frequency unit is configured to transmit the super subframe sent by the interface unit in the sending direction, or the radio frequency unit is configured to: send the received data to the interface unit in the receiving direction; Or, the radio frequency unit is configured to: transmit a super subframe sent by the interface unit in a sending direction; and set, in a receiving direction, to send the received data to the interface unit.

In an exemplary embodiment, the baseband unit, in the sending direction, is configured to: perform time-sharing according to a preset segmentation time when transmitting data to the interface unit; wherein the preset The segmentation time is determined based on the frame period and the number of baseband units.

In an exemplary embodiment, the interface unit is configured to: when the data is sent to the baseband unit, perform time-sharing according to the preset segmentation time; The segmentation timing is determined based on the frame period and the number of baseband units.

In an exemplary embodiment, the interface unit is configured to use a set of data buffers for buffering in the sending direction and the receiving direction when buffering the received data.

Embodiments of the present disclosure also provide a computer readable storage medium storing computer executable instructions that, when executed, implement the data transfer method described above.

The beneficial effects of the disclosure are as follows:

The data transmission method and device provided by the present disclosure divides a large-bandwidth cell into a plurality of small-bandwidth virtual cells, and processes the virtual cells in parallel using multiple baseband boards, thereby reducing the baseband processing capability requirement for each baseband board. At the same time, reduce the hardware cost of the system. In addition, data of multiple groups of virtual cells are segmentally transmitted on the link, and two independent storage modules respectively store data of the virtual cell in the receiving direction and the sending direction, so that data transmission of multiple groups of virtual cells can be completed, to a large extent. The buffering requirement on the radio side is reduced, and it is easy to expand into a mobile communication system with high frequency and large bandwidth.

Other aspects will be apparent upon reading and understanding the drawings and detailed description.

BRIEF abstract

1 is a flowchart of a data transmission method in a sending direction provided in an embodiment of the present disclosure;

2 is a flowchart of a data transmission method in a receiving direction provided in an embodiment of the present disclosure;

3 is a data format sent by a baseband unit to an interface unit in an embodiment of the present disclosure;

4 is a data format sent by an interface unit to a baseband unit in an embodiment of the present disclosure;

FIG. 5 is a schematic block diagram of a data transmission apparatus provided in an embodiment of the present disclosure.

Preferred embodiment of the present disclosure

Embodiments of the present disclosure will be described below with reference to the accompanying drawings.

Embodiments of the present disclosure provide a data transmission method. The method can be applied to a high frequency and large bandwidth communication system. The method can be used in a communication system including a plurality of baseband units, interface units, and radio frequency units. As shown in FIG. 1, the data transmission method in the transmission direction may include:

Step 101: Each of the plurality of baseband units processes data of a preset number of virtual cells, and sends the processed data to the interface unit. The virtual cell is a high frequency cell according to the communication system. The cell divided by the number of subframes included in the super subframe. The high frequency cell refers to a physical cell using a high frequency signal greater than 10 Ghz.

Step 102: The interface unit buffers data of the received baseband unit, and sends data of the plurality of baseband units to the radio frequency unit in a frame period of one super subframe.

As shown in FIG. 2, the data transmission method in the receiving direction may include:

Step 201: The interface unit receives and buffers data sent by the radio unit, and distributes the buffered data to each baseband unit in a predetermined order in a frame period of a super subframe.

Step 202: Each baseband unit receives data sent by the interface unit, and distributes the data to each virtual cell in a preset number of virtual cells.

It can be seen that, in the embodiment of the present disclosure, the high frequency cell is divided into multiple virtual cells according to the number of subframes included in the super subframe in the communication system, and the communication is in the high frequency and large bandwidth (frequency is greater than 10 Ghz, bandwidth is greater than 100 Mhz). In the system, a high-bandwidth high-frequency cell can be divided into multiple small-bandwidth virtual cells; and these virtual cells can be processed in parallel by multiple baseband units, which can effectively reduce the processing requirements of each baseband unit and reduce the hardware cost of the system. .

Embodiments of the present disclosure can avoid the high cost of hardware by increasing the capability of the baseband board when using the high frequency band mentioned above.

Optionally, when the baseband unit sends data to the interface unit or the interface unit sends data to the baseband unit, the baseband unit performs time-division transmission according to the preset segmentation time. By transmitting data in a time-sharing manner, it is possible to effectively avoid link delay caused by the interface unit transmitting or receiving data of all baseband units at the same time.

The preset segmentation time may be determined according to a frame period and a number of baseband units. The number of baseband units may be determined according to the number of virtual cells and the number of virtual cells that each baseband unit can handle. The number of virtual cells processed by each baseband unit can be set according to actual conditions. Of course, the baseband unit and the interface unit can be sent according to the preset segmentation time, and the processing manner of simultaneous transmission can also be adopted, which is not limited in the disclosure.

For example, the processing capability of each baseband unit is 2 virtual cells. The current number of virtual cells divided by the high frequency cell is 10, and then there may be 5 baseband units. The frame period of the current super subframe is 1 ms, so five segment timings can be set for the five baseband units. Each of the five baseband units is preset with an order of transmitting data, and each of the baseband units transmits data at a specified segmentation time.

Optionally, in order to reduce the buffer space of the interface unit and speed up the processing capability of the interface unit, in an embodiment of the disclosure, two sets of data buffer areas may be set in the interface unit. In the sending direction, when the interface unit buffers the received data, the received data may be buffered by one of the data buffers; and in the receiving direction, when the received data is buffered, another set of data buffers may be used. Cache the received data.

Each set of data buffers can be in the form of a ping-pong cache, including two storage modules. When buffering the received data, the two storage modules can switch the data received by the cache in a time-sharing manner. The storage space of each storage module may be at least k*s symbols; wherein k is each baseband unit The number of processed virtual cells; s is the number of symbols included in each super subframe.

Of course, the interface unit can also cache all the received data, but relatively increases the hardware cost of the interface unit, and the complexity of processing the data by the interface unit is also improved. Therefore, each data buffer area of the present disclosure uses two storage modules to switch caches in a time-sharing manner, which can effectively reduce the buffering requirement on the radio frequency side, and is convenient to be extended to high-frequency and large-bandwidth mobile communication.

The technical content of the present disclosure will be described in detail below with reference to the accompanying drawings and an alternative embodiment.

In this alternative embodiment, the frame period of the UHF large bandwidth communication system may be 10 ms, and the maximum may be divided into 10 super subframes. Each super subframe is 1 ms, and there may be n subframes in each super subframe, and the number of n is usually greater than 1. There may be 14 OFDM (Orthogonal Frequency Division Multiplexing) symbols in each super subframe.

One high frequency cell can be divided into n virtual cells. Each baseband unit can process k virtual cells. Therefore, n virtual cells can be processed by i(i=n/k) baseband units. The baseband unit can process k virtual cells, and the number of processed antennas can be j _i . The data of 14 symbols of k virtual cells j _i antennas can be transmitted on the link of each baseband unit and the interface unit in a time of 1 ms, and at the same time, the time of 1 ms can be divided into i parts, i pieces of time. Thus, at each segmentation time, one baseband unit can transmit data of k virtual cells and j antennas. The time at which the i baseband units initiate transmission and reception of valid data is different.

Optionally, in the sending direction, each baseband unit sends a timing advance segmentation timing 1/i ms, according to a preset fragmentation time of the baseband unit, may be sent by the first baseband unit, and the tail baseband unit is finally sent, optionally For the transmission of the baseband unit, see Figure 3. Optionally, after the baseband unit sends the data to the interface unit, the interface unit uses only two buffer spaces of at least k*s symbols to receive data of the i baseband units, and extracts the data according to the antenna to form (j ₁ + j ₂ ... j _n ) n virtual cells (represented as v_cell) The data stream of a single antenna is sent to the radio frequency unit, and the radio frequency unit performs the radio frequency processing, and then sends it to the air interface for transmission.

In the receiving direction, optionally, after receiving the data from the air interface, the radio frequency unit sends the data to the interface unit after being processed by the radio frequency intermediate frequency. The interface unit receives (j ₁ +j ₂ ... j _i ) separate n virtual cell single antenna data from the radio frequency unit, and divides the data into j antenna data of i k virtual cells, using two at least k* The cache space of s symbols is cached. The j _i antenna data of i k virtual cells are time-divisionally transmitted within 1 ms. Optionally, as shown in FIG. 4, the transmission is performed at a time delay of 1/i ms at each segmentation time, and the data is distributed to the link of the corresponding baseband unit, and the data required for the first baseband unit is transmitted first, and the tail baseband unit is transmitted. The required data is sent last. Each baseband unit can distribute the received data to k virtual cells (which can be represented as v_cells) after receiving the required data.

Embodiments of the present disclosure also provide a data transmission device that is applicable to a high frequency large bandwidth communication system. As shown in FIG. 5, the device may include a plurality of baseband units 51, an interface unit 52, and a radio frequency unit 53;

Each baseband unit 51 is configured to process, in the sending direction, data of a preset number of virtual cells, and send the processed data to the interface unit 52, wherein the virtual cell is a high frequency cell according to the super subsystem in the communication system. a cell divided by the number of subframes included in the frame; or, each baseband unit 51, in the receiving direction, is set to receive data transmitted by the interface unit 52, and distribute the received data to a preset number of virtual cells. Or, each baseband unit 51, in the sending direction, is configured to: process data of a preset number of virtual cells, and send the processed data to the interface unit 52, where the virtual cell is a high frequency cell a cell divided according to the number of subframes included in the super subframe in the communication system; in the receiving direction, set to: receive data sent by the interface unit 52, and distribute the received data to each virtual virtual cell in a preset number of virtual cells. Community

The interface unit 52, in the sending direction, is configured to: buffer the data of the received baseband unit 51, and send data of the plurality of baseband units 51 to the radio frequency unit in a frame period of one super subframe; or, the interface unit 52 In the receiving direction, set to: receive and buffer data sent by the radio unit, and distribute the buffered data to each baseband unit 51 in a predetermined order in a frame period of a super subframe; the interface unit 52, The sending direction is set to: buffer the data of the received baseband unit 51, and send data of the plurality of baseband units 51 to the radio frequency unit in a frame period of one super subframe; in the receiving direction, set to: receive and cache Data transmitted by the radio unit, and distributed to each baseband unit 51 in a predetermined order in a frame period of a super subframe;

The radio frequency unit 53 is configured to: transmit the super subframe sent by the interface unit 52 in the sending direction; or, the radio frequency unit 53 is configured to: send the received data to the interface unit 52 in the receiving direction; the radio frequency unit 53, In the sending direction, it is set to: transmit the super subframe transmitted by the interface unit 52; in the receiving direction, it is set to: send the received data to the interface unit 52.

Optionally, the baseband unit 51 is substantially configured to exchange data with the interface unit. In the sending direction, the baseband unit 51 may be configured to read data from the data buffer of the baseband unit and transmit it to the interface unit 52 in a transmission format; the receiving direction, the interface unit 52 may be configured to The data is transmitted to the baseband unit 51 in accordance with the transmission format, and the baseband unit 51 performs buffering. The interface unit 52 can be configured to provide a data transfer function between the plurality of baseband units and the radio frequency unit. In the sending direction, the interface unit 52 may be configured to receive data from the baseband unit, convert the received data into a format required for the radio frequency, and transmit the data converted to the format required by the radio frequency to the radio frequency unit 53; the receiving direction, the interface Unit 52 may be configured to receive data from radio frequency unit 53, convert the received data to a format required for baseband, and transmit the data after conversion to the baseband format to baseband unit 51. The radio frequency unit 53 can be configured to exchange data with the interface unit 53. In the sending direction, the radio frequency unit 53 can be configured to receive the input data of the interface unit 52, perform the radio frequency processing, and then send the data to the air interface; In the receiving direction, the radio frequency unit 53 may be configured to receive data from the air interface, and after being processed by the radio frequency intermediate frequency, is sent to the interface unit 52.

The baseband unit 51 may be configured to perform time-division transmission according to a preset segmentation time when the data is sent to the interface unit 52. The interface unit 52 may be configured to send data to the baseband unit 51 according to a preset score. The segment time is transmitted in time division; wherein the preset segmentation time is determined according to the frame period and the number of baseband units 51. The number of baseband units 51 can be determined according to the number of virtual cells and the number of virtual cells processed by each baseband unit 51.

The interface unit 52 may be configured to buffer the received data, and use a set of data buffers for buffering in the sending direction and the receiving direction, respectively. In the two sets of data buffers in the interface unit 52, each set of data buffers may include two storage modules, and the storage space of each storage module may be at least k*s symbols; wherein k is a processing virtual cell of the baseband unit The preset number; s is the number of symbols included in the super subframe.

In summary, the data transmission method and apparatus provided by the embodiments of the present disclosure can be used to divide a large bandwidth cell into multiple small bandwidth virtual cells when used in a high frequency and large bandwidth communication system. The baseband boards process these virtual cells in parallel, which reduces the baseband processing capability requirement for each baseband board. Moreover, the data of multiple sets of virtual cells are segmentally transmitted on the link, and the sending and receiving directions are respectively stored by using two storage modules. The data of the virtual cell can complete the dual-direction data transmission of multiple groups of virtual cells, which greatly reduces the buffering requirement of the radio frequency side, and is convenient to be extended to the high-frequency and large-bandwidth mobile communication.

Each embodiment in this specification is described in a progressive manner, with each embodiment focusing on The differences from the other embodiments are the same, and the same similar parts between different embodiments can be referred to each other. For the system embodiment, since it is basically similar to the method embodiment, the relevant parts of the method embodiment can be referred to. Also, the term "comprises", "comprising", or any other variants thereof, is intended to encompass a non-exclusive inclusion, such that a process, method, article, or device comprising a series of elements includes not only those elements but also Other elements not explicitly listed, or elements that are inherent to such a process, method, item, or device. An element that is defined by the phrase "comprising a ..." does not exclude the presence of additional equivalent elements in the process, method, item, or device that comprises the element.

In addition, those skilled in the art can understand that all or part of the steps of implementing the above embodiments may be completed by hardware, or may be instructed by a program to execute related hardware, and the program may be stored in a computer readable storage medium. The storage medium mentioned above may be a read only memory, a magnetic disk or an optical disk or the like.

Those of ordinary skill in the art will appreciate that all or some of the steps, systems, and functional blocks/units of the methods disclosed above may be implemented as software, firmware, hardware, and suitable combinations thereof. In a hardware implementation, the division between functional modules/units mentioned in the above description does not necessarily correspond to the division of physical components; for example, one physical component may have multiple functions, or one function or step may be composed of several physical The components work together. Some or all of the components may be implemented as software executed by a processor, such as a digital signal processor or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit. Such software may be distributed on a computer readable medium, which may include computer storage media (or non-transitory media) and communication media (or transitory media). As is well known to those of ordinary skill in the art, the term computer storage medium includes volatile and nonvolatile, implemented in any method or technology for storing information, such as computer readable instructions, data structures, program modules or other data. Sex, removable and non-removable media. Computer storage media include, but are not limited to, Random Access Memory (RAM), Read-Only Memory (ROM), and Electrically Erasable Programmable Read-only Memory (EEPROM). Flash memory or other memory technology, compact disc read-only memory (CD-ROM), digital versatile disc (DVD) or other optical disc storage, magnetic cassette, magnetic tape, disk storage or other magnetic storage device, or Any other medium used to store the desired information and that can be accessed by the computer. Moreover, it is well known to those skilled in the art that The letter medium typically includes computer readable instructions, data structures, program modules or other data in a modulated data signal, such as a carrier wave or other transport mechanism, and can include any information delivery media.

A person skilled in the art can understand that the technical solutions of the present disclosure may be modified or equivalent, without departing from the spirit and scope of the present disclosure, and should be included in the scope of the claims of the present disclosure.

Industrial applicability

Claims

A data transmission method includes:

In the sending direction, each of the plurality of baseband units processes data of a preset number of virtual cells, and sends the processed data to the interface unit; wherein the virtual cell is a high frequency cell according to the super system a cell divided by the number of subframes included in the subframe; the interface unit buffers data of the received baseband unit, and transmits data of the multiple baseband units to the radio frequency unit in a frame period of one super subframe ;or,

In the receiving direction, the interface unit receives and buffers data sent by the radio frequency unit, and distributes the buffered data to each of the baseband units in a predetermined order in a frame period of one super subframe; Each baseband unit receives data sent by the interface unit, and distributes the data to each of the preset number of virtual cells; or

In the sending direction, each of the plurality of baseband units processes data of a preset number of virtual cells, and sends the processed data to the interface unit; wherein the virtual cell is a high frequency cell according to the super system a cell divided by the number of subframes included in the subframe; the interface unit buffers data of the received baseband unit, and transmits data of the multiple baseband units to the radio frequency unit in a frame period of one super subframe And, in the receiving direction, the interface unit receives and buffers data sent by the radio frequency unit, and distributes the buffered data to each of the baseband units in a predetermined order in a frame period of one super subframe. Each of the baseband units receives data sent by the interface unit, and distributes the data to each of the preset number of virtual cells.
The method according to claim 1, wherein when the baseband unit transmits data to the interface unit or the interface unit transmits data to the baseband unit, time-sharing is performed according to a preset segmentation time; The preset segmentation time is determined according to the frame period and the number of baseband units.
The method of claim 2, wherein the number of baseband units is determined according to the number of virtual cells and the number of virtual cells processed by each baseband unit.
The method of claim 1, wherein the interface unit caches the received data using a set of data buffers in the transmit direction and the receive direction, respectively.
The method of claim 4 wherein said data buffer comprises two memory modules. The storage space of each storage module is at least k*s symbols; wherein k is a preset number of virtual cells processed by the baseband unit; s is the number of symbols included in the super subframe.
A data transmission device includes a plurality of baseband units, an interface unit, and a radio frequency unit, wherein:

Each of the baseband units is configured to: process a preset number of virtual cell data, and send the processed data to the interface unit, where the virtual cell is a high frequency cell according to the communication. a cell divided by the number of subframes included in the super subframe in the system; or each of the baseband units, in the receiving direction, configured to: receive data sent by the interface unit, and distribute the received data to the pre- Or each of the baseband units is configured to: process a preset number of virtual cell data, and send the processed data to the interface in a sending direction. a unit, where the virtual cell is a cell divided by the number of subframes included in the super subframe of the communication system; in the receiving direction, the data is sent by the interface unit, and the received data is received. Distributing to each of the preset number of virtual cells;

The interface unit is configured to: buffer the received data of the baseband unit, and send data of the multiple baseband units to the radio frequency unit in a frame period of one super subframe; Or the interface unit is configured to receive and buffer data sent by the radio frequency unit in a receiving direction, and distribute the buffered data to each of the cached data in a predetermined sequence in a frame period of a super subframe. In the baseband unit, or in the sending direction, the interface unit is configured to: buffer the received data of the baseband unit, and send data of the multiple baseband units in a frame period of one super subframe To the radio frequency unit; in the receiving direction, configured to: receive and buffer data sent by the radio frequency unit, and distribute the buffered data to each of the basebands in a predetermined order in a frame period of a super subframe In the unit;

The radio frequency unit is configured to transmit the super subframe sent by the interface unit in the sending direction, or the radio frequency unit is configured to: send the received data to the interface unit in the receiving direction; Or, the radio frequency unit is configured to: transmit a super subframe sent by the interface unit in a sending direction; and set, in a receiving direction, to send the received data to the interface unit.
The device according to claim 6, wherein the baseband unit, in the sending direction, is configured to: perform time-sharing according to a preset segmentation time when transmitting data to the interface unit; wherein the pre-transmission The segmentation timing is determined based on the frame period and the number of baseband units.
The device according to claim 6, wherein the interface unit is configured to: when transmitting data to the baseband unit, perform time-sharing according to the preset segmentation time; The preset segmentation time is determined according to the frame period and the number of baseband units.
The apparatus according to claim 6, wherein said interface unit is configured to cache a set of data buffers in a transmitting direction and a receiving direction, respectively, when buffering the received data.
The apparatus of claim 9, wherein the data buffer comprises two storage modules, each storage module having a storage space of at least k*s symbols; wherein k is a virtual cell processed by the baseband unit The preset number; s is the number of symbols included in the super subframe.