CN113518069A

CN113518069A - Data transmission method and device

Info

Publication number: CN113518069A
Application number: CN202110372530.9A
Authority: CN
Inventors: 谢喆; 杨小刚; 李沛
Original assignee: Hytera Communications Corp Ltd
Current assignee: Hytera Communications Corp Ltd
Priority date: 2021-04-07
Filing date: 2021-04-07
Publication date: 2021-10-19
Anticipated expiration: 2041-04-07
Also published as: CN113518069B

Abstract

The application discloses a data transmission method and device. The data transmission method comprises the following steps: a fast control management connection part for mapping narrowband data to a control word part of the common radio interface superframe when the common radio interface superframe is constructed; the common public radio interface superframe is transmitted over a common public radio interface. The data transmission method can utilize the quick control management connection part of the superframe of the common public radio interface to transmit the narrow-band data, thereby improving the transmission bandwidth of the data.

Description

Data transmission method and device

Technical Field

The present application relates to the field of data transmission technologies, and in particular, to a data transmission method and apparatus.

Background

In the trend of wideband and narrowband convergence, a Common Public Radio Interface (CPRI) needs to transmit wideband and narrowband data simultaneously. The conventional method is to transmit wideband Data and narrowband Data simultaneously by using IQ Data Block part in CPRI basic frame. However, the amount of wideband Data is often large, and if bandwidth Data of an 8-antenna single carrier 20M needs to be transmitted, or IQ Data cascaded by a 20M-bandwidth 4-level 2-antenna RRU, the wideband Data occupies the entire bandwidth of the IQ Data Block, and there is no other space for transmitting the narrowband Data.

Disclosure of Invention

The application provides a data transmission method and a data transmission device, which are used for solving the problem that narrow-band data cannot be transmitted by using a CPRI basic frame in the prior art.

In order to solve the above problem, the present application provides a data transmission method, including:

a fast control management connection part for mapping narrowband data to a control word part of the common radio interface superframe when the common radio interface superframe is constructed;

the common public radio interface superframe is transmitted over a common public radio interface.

When constructing the universal public radio interface superframe, the step of mapping the narrowband data to the fast control management connection part of the control word part of the universal public radio interface superframe comprises the following steps:

determining a minimum number of rows N required for transmission of narrowband data in a fast control management connection portion of a universal public radio interface superframe based on a sampling rate of the narrowband data and a chip rate of a basic frame of the universal public radio interface superframe;

a fast control management connection part for mapping narrowband data to a control word part of a universal common radio interface superframe when constructing the universal common radio interface superframe, comprising:

when constructing the universal public radio interface superframe, mapping the narrowband data into at least N rows of fast control management connections of the control word part of the universal public radio interface superframe.

When constructing the universal public radio interface superframe, mapping the narrowband data into at least N rows of fast control management connections of a control word part of the universal public radio interface superframe comprises the following steps:

when constructing the universal public radio interface superframe, mapping the narrowband data into the first N rows of the quick control management connection of the control word part of the universal public radio interface superframe, mapping the operation, management and maintenance messages into the quick control management connection of the rest part of the control word part of the universal public radio interface superframe, and changing the position of the quick control management connection starting point pointer into Q + N;

wherein Q is the default position of the fast control management connection start point pointer.

Wherein the step of determining the minimum number of rows N required to transmit the narrowband data in the fast control management connection portion of the universal public radio interface superframe based on the sampling rate of the narrowband data and the chip rate of the basic frame of the universal public radio interface superframe comprises:

calculating 1/4 a chip rate for the generic common radio interface superframe based on the chip rate of the basic frame;

calculating 1/4 a sampling rate of a control word portion of the universal public radio interface superframe based on 1/4 a chip rate of the universal public radio interface superframe and a number of bytes included in a control word of the basic frame;

the ratio of the sampling rate of the narrowband data to the sampling rate of the control word portion of the universal public radio interface superframe is calculated 1/4 and rounded up to obtain N.

Wherein the narrowband data is transmitted in a format of A × C, the step of calculating the ratio of the sampling rate of the narrowband data to the sampling rate of the control word portion of 1/4 GPRS superframe comprises:

calculating the quantity of carriers A multiplied by C of the narrow-band antenna based on the number of the antennas, the number of the carriers and the number of field intensity;

and calculating the product of the A multiplied by C number of the narrow-band antenna carriers and the sampling rate of the narrow-band single IQ data to obtain the sampling rate of the narrow-band data.

in response to the ratio not being an integer, the number Y of padding 0 needed to fit X narrowband data into the N rows of fast control management connections is calculated.

Wherein, in response to the ratio not being an integer, calculating the number Y of 0 padding required to adapt the X narrowband data to the N-row fast control management connections, comprises:

calculating minimum integers X and Y which satisfy the following formula;

X/Y＝A/[(8*N*Ny*Fc)/(64*U)-A]；

wherein, a is the narrowband data sampling rate, Ny is the number of bytes contained in the control word of the basic frame, Fc is the chip rate of the basic frame, and U is the transmission bit width.

Wherein the step of mapping the narrowband data to the fast control management connection part of the control word part of the common public radio interface superframe when constructing the common public radio interface superframe comprises:

and sequentially circulating according to the sequence of longitudinal mapping and transverse mapping, the mode of mapping X narrow-band IQ data first and filling Y0 data later until the filling of at least N rows of quick control management connections is finished.

To achieve the above object, the present application provides a communication device including a processor for executing instructions to implement the above method.

To achieve the above object, the present application provides a computer-readable storage medium for storing instructions/program data that can be executed to implement the above-described method.

According to the method, the CPRI superframe is constructed firstly, then the constructed and generated CPRI superframe is transmitted through the CPRI interface, when the superframe is constructed, the narrowband data can be mapped to the Fast control management connection part of the control word part of the CPRI superframe, so that the narrowband data can be transmitted by using the Fast control management connection part of the CPRI superframe, the transmission bandwidth of the data is improved, along with the updating of a CPRI protocol, the line rate is improved, the available bandwidth of Fast C & M parts of the control word part in the CPRI superframe is more, the CPRI superframe can bear more narrowband data, and the CPRI communication can support more flexible IQ data sampling rate.

Drawings

Fig. 1 is a schematic diagram of a CPRI basic frame of the present application;

fig. 2 is a schematic diagram illustrating the definition of each control word in the CPRI superframe according to the present application;

fig. 3 is a schematic flow chart of a first embodiment of the data transmission method of the present application;

fig. 4 is a schematic flow chart of a second embodiment of the data transmission method of the present application;

fig. 5 is a schematic diagram illustrating mapping of narrowband data in a CPRI superframe control word according to a first embodiment of the data transmission method of the present application;

FIG. 6 is an enlarged schematic view at block A of FIG. 5;

fig. 7 is a schematic mapping diagram of IQ Data Block part of wideband Data in a CPRI superframe in the first embodiment of the Data transmission method of the present application;

FIG. 8 is a schematic block diagram of an embodiment of a communication device of the present application;

FIG. 9 is a schematic structural diagram of an embodiment of a computer storage medium according to the present application.

Detailed Description

In order to make those skilled in the art better understand the technical solution of the present invention, a data transmission method and apparatus provided by the present application are described in further detail below with reference to the accompanying drawings and the detailed description.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments without conflict.

The data transmission method can be applied to the transmission method of the CPRI superframe.

The CPRI superframe may include 256 CPRI basic frames. As shown in fig. 1, the CPRI basic frame may be divided horizontally into 16 slots, where the first slot is used to transmit the CPRI control word, and the remaining 15 slots are IQ Data Block parts. As shown in fig. 2, the control word part in each CPRI basic frame in the CPRI super frame is extracted and grouped in 64 rows and 4 columns, and the control word of each row transmits specific content.

For the IQ Data Block part in the CPRI superframe, because the amount of wideband IQ Data is large, the IQ Data Block is generally used for transmitting wideband Data and cannot be used for transmitting narrowband Data.

While some fields of the control word portion of the CPRI superframe are not conveniently used for transmitting narrowband data. For example, the reserved control word part may be occupied with the update of the CPRI protocol, so that if narrowband data is transmitted using the reserved control word part, there may be a risk of loss of the narrowband data.

The inventor finds that, along with the updating of the CPRI protocol and the improvement of the line rate, the Fast C & M part of the control word part in the CPRI superframe has more available bandwidth, can be used for bearing more narrow-band data, and supports more flexible IQ data sampling rate.

Based on this, the present application proposes a data transmission method for transmitting narrowband data through the Fast C & M part of the control word part in the CPRI superframe. Referring to fig. 3, fig. 3 is a schematic flow chart of a first embodiment of the data transmission method according to the present application. The data transmission method of the present embodiment includes the following steps. It should be noted that the following numbers are only used for simplifying the description, and are not intended to limit the execution order of the steps, and the execution order of the steps in the present embodiment may be arbitrarily changed without departing from the technical idea of the present application.

S101: and when the CPRI superframe is constructed, mapping the narrowband data to a fast control management connection part of a control word part of the CPRI superframe.

The method comprises the steps of constructing a CPRI superframe, then transmitting the constructed and generated CPRI superframe through a CPRI interface, and mapping narrowband data to a Fast control management connection part of a control word part of the CPRI superframe when constructing the superframe, so that the narrowband data can be transmitted by using the Fast control management connection part of the CPRI superframe, thereby improving the transmission bandwidth of the data, and along with the updating of a CPRI protocol, the line rate is improved, the available bandwidth of Fast C & M parts of the control word part in the CPRI superframe is more, so that the CPRI superframe can bear more narrowband data, and the CPRI communication can support more flexible IQ data sampling rate.

The narrowband data may refer to data transmitted by a narrowband communication system, such as Police Digital Trunking (PDT) data.

S102: and transmitting the CPRI superframe through the CPRI interface.

In the embodiment, a CPRI superframe is constructed first, and then the constructed and generated CPRI superframe is transmitted through a CPRI interface, and when the superframe is constructed, narrowband data is mapped to a Fast control management connection part of a control word part of the CPRI superframe, so that the narrowband data can be transmitted by using the Fast control management connection part of the CPRI superframe, thereby improving the transmission bandwidth of the data, and along with the update of a CPRI protocol and the improvement of a line rate, the available bandwidth of Fast C & M parts of the control word part in the CPRI superframe is more, so that the CPRI superframe can bear more narrowband data, and the CPRI communication can support more flexible IQ data sampling rate.

Further, the transmission rate of the narrowband IQ data can be adapted to the transmission rate of the CPRI Fast C & M, so as to transmit the narrowband data according to the transmission rate of the narrowband data. The narrow-band IQ data of the present application refers to a narrow-band IQ data, such as IQ0A1C0 shown in fig. 6. The narrow-band data of the present application refers to a set of narrow-band IQ data. Each set of narrowband IQ data includes Na narrowband IQ data. In this case, Na ═ antenna count × (1+ field strength count × i) carrier count. Assuming that the number of antennas is 2, the number of carriers is 2, and there is no field strength, the narrowband data is a set of 2-antenna 2-carrier IQ data without field strength, i.e. the narrowband data includes 4 IQ data, e.g. a set of narrowband IQ data includes 4 IQ data shown in fig. 6 as IQ0A0C0, IQ0A1C0, IQ0A0C1, and IQ0A1C 1. Referring to fig. 4, fig. 4 is a flowchart illustrating a method for data transmission by using the above adaptation method according to the present application. The data transmission method of the present embodiment includes the following steps.

S201: the minimum number of rows N required to transmit narrowband data in the fast control management connection portion of the CPRI superframe is determined based on the sampling rate of the narrowband data and the chip rate of the basic frame of the CPRI superframe.

Before constructing the CPRI superframe, the minimum number of rows N required for transmitting the narrowband data in the Fast control management connection portion of the CPRI superframe may be determined based on the sampling rate of the narrowband data and the chip rate of the basic frame of the CPRI superframe, so as to adapt the transmission rate of the narrowband IQ data to the transmission rate of the CPRI Fast C & M, so as to be able to transmit the narrowband data at the predetermined transmission rate of the narrowband data.

The minimum number of fast control management connections required for transmitting narrowband data in the CPRI superframe 1 column control word may be determined first, and "the minimum number of fast control management connections required for transmitting narrowband data in the CPRI superframe 1 column control word" may be used as "the minimum number of rows N required for transmitting narrowband data in the fast control management connection portion of the CPRI superframe.

Because all control words of the CPRI superframe are grouped according to 64 rows and 4 columns, the chip rate Fc of the basic frame may be substituted into the formula K ═ Fc/64 to calculate 1/4 the chip rate K of the CPRI superframe; then 1/4 chip rate K of the CPRI superframe and number of bytes Ny contained in the control word of the basic frame are substituted into the formula T ═ 8 × Ny × K)/U to calculate the sampling rate T of the control word part of 1/4CPRI superframe; the ratio of the sampling rate a of the narrowband data to the sampling rate T of the control word portion of the 1/4CPRI superframe is calculated and rounded up to obtain N. Wherein, U is a data line bit width, which may be 32bit or 64bit, etc.

The chip rate Fc of the basic frame may be unlimited, and may be 3840Khz, for example. In the case where the chip rate Fc of the basic frame is 3840Khz, the sampling rate of the CPRI super frame is 3840Khz/256 — 15 Khz.

Alternatively, in the case where narrowband data is transmitted in the form of a × C after being subjected to sampling arrangement, the sampling rate of the narrowband data may be calculated based on parameters such as the number of antennas, the number of carriers, and the number of field strengths before the step "calculating the ratio of the sampling rate a of the narrowband data to the sampling rate T of the control word portion of 1/4CPRI superframe".

Specifically, the number of antennas, the number of carriers, and the number of field strengths may be substituted into a formula "Na ═ the number of antennas x the number of carriers x (1+ field strength i), i ═ 0 or 1", to calculate the number Na of the narrowband antenna carriers a × C; the number of narrowband antenna carriers a × C and the narrowband single IQ data sampling rate are then multiplied to obtain the sampling rate of the narrowband data.

S202: and when the CPRI superframe is constructed, mapping the narrowband data into at least N rows of quick control management connections of the control word part of the CPRI superframe.

After determining the minimum number of lines N required to transmit narrowband data in the fast control management connection portion of the CPRI superframe based on step S202, narrowband data may be mapped into at least the N lines of the fast control management connection of the control word portion of the CPRI superframe to transmit the narrowband data at a predetermined transmission rate of the narrowband data.

Optionally, in order to avoid affecting the OAM message transmission in the Fast C & M channel, when the CPRI superframe is constructed, the narrowband data may be mapped into the N-row Fast Control Management connection of the Control word part of the CPRI superframe, so as to transmit the narrowband data at the predetermined transmission rate of the narrowband data while occupying as little Fast Control & Management (Fast Control & Management) space as possible.

In addition, narrowband data can be mapped into the first N rows of the fast control management connection of the control word part of the CPRI superframe when the CPRI superframe is constructed, mapping an OAM (Operation Administration and Maintenance) message into a fast control management connection of the remaining part of the control word part of the CPRI superframe, and changing the actual position of Pointer P to Q + N, where Q is the Pointer P (fast control management connection start point Pointer) default location, N is the minimum number of lines required to transmit narrowband data in the fast control management connection portion of the CPRI superframe, so that the position between the default position and the actual position of the Pointer P is used to carry the narrowband data, therefore, the data receiver and the data sender can know the position of the narrowband data based on the default position and the actual position of the Pointer P, and the narrowband data in the CPRI superframe can not be mistakenly used as OAM information, so that the narrowband data can be stored and analyzed from the CPRI superframe.

The default position of Pointer P may be set according to actual conditions, or may be agreed by a data receiver or a data sender, for example, 20, so that after the actual position of Pointer P is changed to Q + N, (Q + N-20) × 4 control words from 20 rows to Q + N-1 row are all used to transmit narrowband data.

In addition, since the narrowband data may not fill up the N-line space occupied by the narrowband data in the Fast C & M channel, i.e., the ratio of the sampling rate of the narrowband data to the sampling rate of the control word portion of the 1/4CPRI superframe is not an integer, 0 may be filled between the narrowband data. Thus, prior to step S202, the number Y of 0S that need to be filled in to fit every X narrowband data into N rows of Fast C & M can be calculated.

According to the fact that transmission rates are equal, namely transmission time is equal, (X + Y)/[ (8 × N × Ny × Fc)/(64 × U) ], X/(Na × Fs), a proportional relation between the narrowband data filling amount and 0 filling amount can be obtained, namely, X/Y ═ Fs)/(8 × N × Ny × Fc)/(64 × U) -Na Fs ], and the minimum integers X and Y satisfying the above formula can be calculated to obtain X and Y. In addition, M may be an integer multiple of Na to facilitate data buffering.

S203: and transmitting the CPRI superframe through the CPRI interface.

Alternatively, when constructing the CPRI superframe, the control word portion of the CPRI superframe may be mapped in the order of the longitudinal mapping first and the transverse mapping second.

In addition, when mapping the narrowband data to at least N rows Fast C & M, the method may sequentially circulate according to a mode of first mapping X narrowband IQ data and then filling Y0 s until the at least N rows of Fast control management connections are filled. As shown in fig. 6, if narrowband data needs to be mapped to Fast C & M of 2 rows, the method may sequentially circulate according to a mode of first mapping X narrowband IQ data and then filling Y0 s until the Fast control management connection of 2 rows is filled. The space occupied by each filled 0 is the same as the space occupied by each narrowband IQ data, for example, in fig. 6, the space occupied by each 0 and the space occupied by each narrowband IQ data are both 32 bits.

Of course, in other embodiments, when mapping the narrowband data to at least N rows of Fast C & M, the method may sequentially loop according to a mode of mapping X narrowband data first and then filling Y0 s until the at least N rows of Fast control management connection are filled, where a space occupied by each filled 0 is the same as a space occupied by each narrowband data.

In the embodiment, a CPRI superframe is constructed first, and then the constructed and generated CPRI superframe is transmitted through a CPRI interface, and when the superframe is constructed, narrowband data is mapped to a Fast control management connection part of a control word part of the CPRI superframe, so that the narrowband data can be transmitted by using the Fast control management connection part of the CPRI superframe, thereby improving the transmission bandwidth of the data, and along with the update of a CPRI protocol and the improvement of a line rate, the available bandwidth of Fast C & M parts of the control word part in the CPRI superframe is more, so that the CPRI can bear more narrowband data, and the CPRI communication can support more flexible IQ data sampling rate; and the transmission rate of the narrow-band IQ data is adapted to the transmission rate of the CPRI Fast C & M, so that the narrow-band data can be transmitted according to the preset transmission rate of the narrow-band data.

The method and the device can be used for the broadband and narrowband fusion networking, and can be used for simultaneously transmitting broadband and narrowband IQ service data by adopting a single-path CPRI interface (optical fiber connection or on-board wiring) between a BBU (Building Base band Unit) and a RRU (Radio Remote Unit) under the condition of broadband and narrowband fusion networking, so that the bandwidth utilization rate of the CPRI interface can be maximized, the networking scale of the broadband and narrowband fusion networking is enhanced, and the networking cost is greatly reduced. The method is suitable for the macro station BBU and the RRU, and is also suitable for iBS all-in-one machine equipment.

In order to better explain the data transmission method of the present application, the following data transmission embodiments are provided for illustrative explanation:

example 1:

taking CPRI interface rate of 9.8304Gbps as an example, PDT service Data is transmitted in Fast C & M, and LTE (Long Term Evolution) Data is transmitted in IQ Data Block part.

For PDT, assume that 2-antenna, 2-carrier, IQ data without field strength needs to be transmitted:

PDT single IQ data sample rate (32 bit): fs ═ 76.8 khz;

chip rate per basic frame of CPRI: fc 3840 khz;

the control word of each basic frame of the CPRI contains the number of bytes: for example, 9.8304Gbps, Ny-128 bit/8-16;

1/4 chip rate of superframe: fc/64-60 khz;

1/4 sample rate of control word portion of superframe (32 bit): (Ny/4) × (Fc/64) ═ Ny Fc)/256 = 240 khz;

number of narrowband antenna carriers a × C: na-antenna number x-carrier number x (1+ field strength number i) -4, i-0;

narrow band a × C sampling rate (32 bit): na Fs 307.2 khz;

the number of Fast C & M needed to be used per 1/4 superframes:

N＝ceil[(Na*Fs)/(Ny*Fc/256)]＝ceil[(256Na*Fs)/(Ny*Fc)]＝2；

the remaining 44-N is 42 lines, and the transmission rate of the supported OAM message is: 0.48Ny (44-N) ═ 322.56 Mhz;

from X/Y ═ (Na × Fs)/(N × Ny × Fc/256-Na × Fs), X ═ 16 and Y ═ 9 were obtained.

Then 16 PDT IQ data are transmitted, i.e. X/Na 16/4 — 4, i.e. IQ data without field strength of 4 sets of 2-antenna 2 carriers need to be transmitted, 16 valid data fields of 32 bits in Fast C & M are needed, and 9 invalid 0 fields are needed, i.e. (X + Y)/N (X + Y)/2 1/4 superframes are needed.

In this embodiment, the mapping manner of the narrowband data in Fast C & M is specifically shown in fig. 5, and an enlarged schematic diagram at a frame a in fig. 5 is shown in fig. 6. Wherein, the longitudinal 1 lattice is 32 bit.

LTE needs to transmit 20M bandwidth, 4-level concatenation, 2-transmission, 2-reception, and Data of RRU, and mapping of IQ Data in IQ Data Block part is shown in fig. 7.

Example 2

Taking the CPRI interface rate of 9.8304Gbps as an example, TETRA service data is transmitted in Fast C & M.

For TETRA, assume that 4-antenna, 4-carrier, IQ data with field strength needs to be transmitted:

TETRA single IQ data sample rate (32 bit): fs-230.4 khz;

chip rate per basic frame of CPRI: fc 3840 khz;

the control word of each basic frame of the CPRI contains the number of bytes: ny-16;

1/4 chip rate of superframe: fc/64-60 khz;

1/4 sample rate of control word portion of superframe (32 bit): (Ny Fc)/256 ═ 240 khz;

number of narrowband antenna carriers a × C: na-antenna number x-carrier number x (1+ field strength number i) -32, i-1;

narrow band a × C sampling rate: na Fs 7372.8 khz;

the number of Fast C & M needed to be used per 1/4 superframes:

Ncm＝ceil[(Na*Fs)/(Ny*Fc/256)]＝ceil[(256Na*Fs)/(Ny*Fc)]＝31；

the remaining 44-Ncm is 13 lines, and the transmission rate of the supported OAM message is: 0.48Ny (44-Ncm) 99.84 Mhz;

from X/Y ═ (Na × Fs)/(Ncm × Ny × Fc/256-Na × Fs), X ═ 768 and Y ═ 7 were obtained.

Then, for each transmission of 768 TETRA IQ data, i.e. X/Na 768/32 24, that is, IQ data of 24 groups of 4 antennas and 4 carrier bands needs to be transmitted, 768 valid data fields of 32 bits in Fast C & M are needed, and 7 invalid 0 fields are needed, that is, (X + Y)/Ncm (768+ 7)/31-25 groups of 1/4 superframes are needed.

The application provides a communication device, which comprises an assembly module and a communication module.

The assembling module is used for mapping the narrowband data to a fast control management connection part of a control word part of the CPRI superframe when the CPRI superframe is constructed;

the communication module is used for transmitting CPRI superframes through a CPRI interface.

The communication device of the present embodiment further includes a calculating module, configured to determine, based on the sampling rate of the narrowband data and the chip rate of the basic frame of the CPRI superframe, a minimum number of rows N required for transmitting the narrowband data in the fast control management connection portion of the CPRI superframe;

and the assembling module is used for mapping the narrowband data to at least N rows of quick control management connections of the control word part of the CPRI superframe when the CPRI superframe is constructed.

When constructing a CPRI superframe, an assembly module of the communication apparatus according to this embodiment maps narrowband data into the first N-row fast control management connections of the control word portion of the CPRI superframe, maps OAM messages into the fast control management connections of the remaining portion of the control word portion of the CPRI superframe, and changes the position of the fast control management connection start point pointer to Q + N;

The communication device of the present embodiment is configured to calculate 1/4 a chip rate of a CPRI superframe based on a chip rate of a basic frame; calculating the sampling rate of the control word part of 1/4CPRI superframe based on the chip rate of 1/4CPRI superframe and the number of bytes contained in the control word of basic frame; the ratio of the sampling rate of the narrowband data to the sampling rate of the control word portion of the 1/4CPRI superframe is calculated and rounded up to obtain N.

The calculation module of the communication device of the embodiment can be used for calculating the number of carriers A × C of the narrow-band antenna based on the number of antennas, the number of carriers and the number of field strengths; and calculating the A multiplied by C number of the narrow-band antenna carriers and the sampling rate of the narrow-band single IQ data to calculate the sampling rate of the narrow-band data.

The calculating module of the communication apparatus of this embodiment may be configured to calculate the number Y of 0 padding required to fit the X narrowband data into the N rows of fast control management connections in response to the ratio not being an integer.

The calculation module of the communication device of the present embodiment may be configured to calculate minimum integers X and Y that satisfy the following formulas;

X/Y＝A/[(8*N*Ny*Fc)/(64*U)-A]；

wherein, a is the narrowband data sampling rate, Ny is the number of bytes contained in the control word of the basic frame, Fc is the chip rate of the basic frame, and U is the data line bit width.

Referring to fig. 8, fig. 8 is a schematic structural diagram of an embodiment of a communication device according to the present application. The communication device 10 includes a processor 12, and the processor 12 is configured to execute instructions to implement the data transmission method described above. For a specific implementation process, please refer to the description of the foregoing embodiment, which is not repeated herein.

The processor 12 may also be referred to as a CPU (Central Processing Unit). The processor 12 may be an integrated circuit chip having signal processing capabilities. The processor 12 may also be a general purpose processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components. A general purpose processor may be a microprocessor or the processor 12 may be any conventional processor or the like.

The communication device 10 may further include a memory 11 for storing instructions and data required for the processor 12 to operate.

Referring to fig. 9, fig. 9 is a schematic structural diagram of a computer-readable storage medium according to an embodiment of the present disclosure. The computer readable storage medium 20 of the embodiments of the present application stores instructions/program data 21, which instructions/program data 21, when executed, implement the methods provided by any of the embodiments of the data transmission methods of the present application, as well as any non-conflicting combinations. The instructions/program data 21 may form a program file stored in the storage medium 20 in the form of a software product, so as to enable a computer device (which may be a personal computer, a server, or a network device) or a processor (processor) to execute all or part of the steps of the methods according to the embodiments of the present application. And the aforementioned storage medium 20 includes: various media capable of storing program codes, such as a usb disk, a mobile hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, or terminal devices, such as a computer, a server, a mobile phone, and a tablet.

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, a division of a unit is merely a logical division, and an actual implementation may have another division, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

The above embodiments are merely examples and are not intended to limit the scope of the present disclosure, and all modifications, equivalents, and flow charts using the contents of the specification and drawings of the present disclosure or those directly or indirectly applied to other related technical fields are intended to be included in the scope of the present disclosure.

Claims

1. A method of data transmission, the method comprising:

a fast control management connection part mapping narrowband data to a control word part of a universal public radio interface superframe when constructing the universal public radio interface superframe;

transmitting the common public radio interface superframe over a common public radio interface.

2. The data transmission method according to claim 1, wherein the step of mapping narrowband data to the fast control management connection part of the control word part of the common public radio interface superframe when constructing the common public radio interface superframe comprises:

determining a minimum number of rows N required to transmit the narrowband data in a fast control management connection portion of a common public radio interface superframe based on a sampling rate of the narrowband data and a chip rate of a fundamental frame of the common public radio interface superframe;

the fast control management connection part mapping narrowband data to a control word part of a universal public radio interface superframe when constructing the universal public radio interface superframe includes:

mapping the narrowband data into at least N rows of fast control management connections of a control word portion of the universal public radio interface superframe when constructing the universal public radio interface superframe.

3. The data transmission method according to claim 2, wherein the mapping narrowband data into at least N rows of fast control management connections of the control word portion of the common public radio interface superframe when constructing the common public radio interface superframe comprises:

when constructing a universal public radio interface superframe, mapping narrowband data into the first N rows of quick control management connections of a control word part of the universal public radio interface superframe, mapping operation, management and maintenance messages into the quick control management connections of the rest part of the control word part of the universal public radio interface superframe, and changing the position of a quick control management connection starting point pointer into Q + N;

4. The data transmission method of claim 2, wherein the step of determining the minimum number of rows N required to transmit the narrowband data in the fast control management connection portion of the generic public radio interface superframe based on the sampling rate of the narrowband data and the chip rate of the basic frame of the generic public radio interface superframe comprises:

calculating 1/4 a chip rate of a common public radio interface superframe based on the chip rate of the basic frame;

calculating a sample rate of a control word portion of the 1/4 universal public radio interface superframe based on a chip rate of the 1/4 universal public radio interface superframe and a number of bytes contained in a control word of the basic frame;

calculating a ratio of the sampling rate of the narrowband data to the sampling rate of the control word portion of the 1/4 common public radio interface superframe and rounding the ratio up to obtain the N.

5. The data transmission method according to claim 4, wherein the narrowband data is transmitted in an A x C format, and the step of calculating the ratio of the sampling rate of the narrowband data to the sampling rate of the control word portion of the 1/4 GPRS superframe comprises:

and calculating the product of the A multiplied by C number of the narrow-band antenna carriers and the sampling rate of the narrow-band IQ data to obtain the sampling rate of the narrow-band data.

6. The data transmission method according to claim 4, wherein the step of mapping narrowband data to the fast control management connection part of the control word part of the common public radio interface superframe when constructing the common public radio interface superframe comprises:

and in response to the ratio not being an integer, calculating the number Y of padding 0 needed to fit X narrowband data into the N rows of fast control management connections.

7. The data transmission method according to claim 5, wherein the calculating the number Y of padding 0 needed to fit X narrowband data into N rows of fast control management connections in response to the ratio not being an integer comprises:

calculating minimum integers X and Y which satisfy the following formula;

X/Y＝A/[(8*N*Ny*Fc)/(64*U)-A]；

wherein a is the narrowband data sampling rate, Ny is the number of bytes contained in the control word of the base frame, Fc is the chip rate of the base frame, and U is the transmission bit width.

8. The data transmission method according to claim 6, wherein the step of mapping narrowband data to the fast control management connection part of the control word part of the common public radio interface superframe when constructing the common public radio interface superframe comprises:

and sequentially circulating according to the sequence of longitudinal mapping and transverse mapping, the mode of mapping X narrow-band IQ data first and filling Y0 data later until the filling of the at least N rows of quick control management connections is finished.

9. A communication device, characterized in that the communication device comprises a processor for executing instructions to implement the steps of the method according to any of claims 1-8.

10. A computer-readable storage medium, characterized in that a program file capable of implementing the method of any one of claims 1-8 is stored in the computer-readable storage medium.