CN113660074A

CN113660074A - Reverse channel signaling coding and decoding method, device, equipment and storage medium

Info

Publication number: CN113660074A
Application number: CN202110963327.9A
Authority: CN
Inventors: 赵冬雪; 付磊; 赵蕊
Original assignee: Guangzhou Huiruisitong Technology Co Ltd
Current assignee: Guangzhou Huiruisitong Technology Co Ltd
Priority date: 2021-08-20
Filing date: 2021-08-20
Publication date: 2021-11-16

Abstract

The present disclosure relates to a method, an apparatus, a device and a storage medium for encoding and decoding a reverse channel signaling, wherein the encoding method comprises: acquiring service valid data and EMB domain parameter data to be sent; generating a multi-row and multi-column matrix based on the service effective data and the EMB domain parameter data; wherein the number of rows of the multi-row and multi-column matrix is greater than 2; coding the matrix of the plurality of rows and the plurality of columns to obtain intermediate coded data of which each row contains check bits; interleaving the intermediate coded data and configuring a preset synchronous word to obtain an information bit sequence; generating the reverse channel signaling based on the information bit sequence. The method and the device are used for solving the problems that the existing reverse channel signaling can bear fewer effective data bits and can not meet the use requirement.

Description

Reverse channel signaling coding and decoding method, device, equipment and storage medium

Technical Field

The present disclosure relates to the field of wireless communications technologies, and in particular, to a method, an apparatus, a device, and a storage medium for encoding and decoding reverse channel signaling.

Background

In the related narrow-band communication standard protocol, a double-time-slot TDMA technique is usually adopted, wherein the double-time-slot TDMA technique divides a channel into two alternate time slots, each time slot is usually 30ms and is used for carrying service data and control signaling; the related mobile station transmits voice information or data information in one time slot, and at this time, another time slot may become a signaling channel, the control signaling transmitted in this signaling channel is called reverse channel signaling, and the reverse channel signaling can realize multiple functions of priority call control, emergency call preemption, and the like.

Disclosure of Invention

The inventor finds that the reverse channel signaling in the related narrowband protocol can carry fewer effective data bits, and if more effective data needs to be transmitted, the effective data needs to be transmitted for multiple times, which results in long transmission time cost and does not meet the use requirement. Therefore, it is necessary to design a new reverse channel signaling encoding method, decoding method and device thereof, etc. to enable the reverse channel signaling to carry more effective data bits to meet the use requirement.

In order to solve the above technical problem, the present disclosure provides a reverse channel signaling encoding method, a reverse channel signaling decoding method, an apparatus, an intercom device, an electronic device, and a computer-readable storage medium.

In a first aspect, an embodiment of the present disclosure provides a reverse channel signaling coding method, including:

acquiring service valid data and EMB domain parameter data to be sent;

generating a multi-row and multi-column matrix based on the service effective data and the EMB domain parameter data; wherein the number of rows of the multi-row and multi-column matrix is greater than 2; the number of columns of the multi-row multi-column matrix is the same as the number of columns of a coding method specified in a narrow-band communication protocol;

coding the matrix of the plurality of rows and the plurality of columns to obtain intermediate coded data of which each row contains check bits;

interleaving the intermediate coded data and configuring a preset synchronous word to obtain an information bit sequence;

generating reverse channel signaling based on the information bit sequence.

Optionally, the generating a matrix with multiple rows and multiple columns based on the service valid data and the EMB domain parameter data includes:

arranging the service effective data into a first matrix;

arranging the EMB domain parameter data into a second matrix; wherein the first matrix and the second matrix have the same number of columns;

arranging the first matrix and the second matrix into a plurality of rows and columns of matrixes, wherein the number of columns of the plurality of rows and columns of matrixes is the same as that of the first matrix and the second matrix.

Optionally, the matrix with multiple rows and multiple columns includes: greater than or equal to 3N bits of data; and N is the number of columns of the multi-row and multi-column matrix.

Optionally, the EMB domain parameter data is N bits, the service valid data is 2N, 3N, or 4N bits, and N is the number of columns of the multi-row and multi-column matrix.

Optionally, the EMB domain parameter data is 7 bits, and the second matrix is 1 row and 7 columns;

the service effective data is 21 bits, and the first matrix is 3 rows and 7 columns;

the matrix of rows and columns is 4 rows and 7 columns.

Optionally, the time duration for transmitting the reverse channel signaling is 12.5 ms.

Optionally, the encoding the multiple rows and multiple columns of matrices to obtain intermediate encoded data each row of which includes a check bit includes:

and carrying out QR coding processing on the multiple rows and columns of matrixes to obtain intermediate coded data of which each row contains a QR check bit.

Optionally, the configuring, after performing interleaving processing on the intermediate encoded data, a preset sync word to obtain an information bit sequence includes:

interleaving the intermediate coded data to obtain an interleaved coding result;

dividing the interleaving coding result into a first sequence and a second sequence, wherein the bit number of the first sequence is the same as that of the second sequence;

and symmetrically configuring the first sequence and the second sequence on two sides of the preset synchronous word to obtain an information bit sequence.

Optionally, the generating a reverse channel signaling based on the information bit sequence includes:

copying the first S bit data of the information bit sequence for a first preset number of times to serve as a first additional bit; wherein S is a positive integer greater than or equal to 1;

copying the last S bit data of the information bit sequence for a first preset number of times to serve as a second additional bit;

and arranging the first additional bit, the information bit sequence and the second additional bit in sequence to obtain a sequencing result, and performing symbol mapping processing on the arrangement result to obtain the reverse channel signaling.

carrying out symbol mapping processing on the information bit sequence to obtain a symbol sequence;

copying the first M symbols of the symbol sequence for a second preset number of times to serve as first additional bits of the reverse channel signaling; wherein M is a positive integer greater than or equal to 1;

copying the last M symbols of the symbol sequence for a second preset number of times to serve as second additional bits of the reverse channel signaling;

and sequencing the first additional bit, the symbol sequence and the second additional bit to obtain the reverse channel signaling.

In a second aspect, an embodiment of the present disclosure provides a reverse channel signaling decoding method, including:

carrying out demapping processing on the demodulated reverse channel signaling to obtain an information bit sequence;

extracting the information bit sequence to obtain coded data with preset digits;

de-interleaving the encoded data to obtain intermediate encoded data with each row containing check bits; wherein the intermediate encoded data comprises a matrix of rows and columns with a row number greater than 2;

and decoding the intermediate coded data to obtain service valid data and EMB domain parameter data.

Optionally, the decoding the intermediate encoded data to obtain service valid data and EMB domain parameter data includes:

and carrying out QR decoding on the intermediate coded data to obtain service valid data and EMB domain parameter data.

In a third aspect, an embodiment of the present disclosure provides a reverse channel signaling encoding apparatus, including:

the acquisition module is used for acquiring service valid data and EMB domain parameter data to be sent;

the generating module is used for generating a multi-row and multi-column matrix based on the service effective data and the EMB domain parameter data; wherein the number of rows of the multi-row and multi-column matrix is greater than 2; the number of columns of the multi-row multi-column matrix is the same as the number of columns of a coding method specified in a narrow-band communication protocol;

the coding module is used for coding the multi-row and multi-column matrix to obtain intermediate coding data of which each row contains check bits;

the interleaving module is used for performing interleaving processing on the intermediate coded data and then configuring preset synchronous words to obtain an information bit sequence;

and the mapping module is used for generating reverse channel signaling based on the information bit sequence.

In a fourth aspect, an embodiment of the present disclosure provides a reverse channel signaling decoding apparatus, including:

the demapping module is used for demapping the demodulated reverse channel signaling to obtain an information bit sequence;

the extraction module is used for extracting the information bit sequence to obtain coded data with preset digits;

the de-interleaving module is used for de-interleaving the coded data to obtain intermediate coded data of which each row contains check bits; wherein the intermediate encoded data comprises a matrix of rows and columns with a row number greater than 2;

and the decoding module is used for decoding the intermediate coded data to obtain service effective data and EMB domain parameter data.

In a fifth aspect, an embodiment of the present disclosure provides an intercom apparatus, including an encoding device and a decoding device, where the encoding device implements the reverse channel signaling encoding method described in the first aspect, and the decoding device implements the reverse channel signaling decoding method described in the second aspect.

In a sixth aspect, an embodiment of the present disclosure provides an electronic device, including: the system comprises a processor, a memory and a communication bus, wherein the processor and the memory are communicated with each other through the communication bus;

the memory for storing a computer program;

the processor is configured to execute the program stored in the memory to implement the reverse channel signaling encoding method according to the first aspect or the reverse channel signaling decoding method according to the second aspect.

In a seventh aspect, the disclosed embodiments provide a computer-readable storage medium, which stores a computer program, and the computer program, when executed by a processor, implements the reverse channel signaling encoding method of the first aspect or the reverse channel signaling decoding method of the second aspect.

Compared with the prior art, the technical scheme provided by the embodiment of the disclosure has the following advantages: the method provided by the embodiment of the disclosure generates the service valid data and the EMB domain parameter data into a multi-row and multi-column matrix, and the row number of the multi-row and multi-column matrix is more than 2; coding the matrix of the plurality of rows and the plurality of columns to obtain intermediate coded data of which each row contains check bits; interleaving the intermediate coded data and configuring a preset synchronous word to obtain an information bit sequence; generating reverse channel signaling based on the information bit sequence; compared with the prior art, the reverse channel signaling generated by the method provided by the embodiment of the disclosure can bear more effective data bits, meets the use requirement, and has relatively short transmission time under the condition of relatively long transmitted data, thereby effectively reducing the time cost and improving the efficiency.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.

FIG. 1 is a schematic diagram illustrating a slot configuration of a direct mode in a DMR/PDT standard in the prior art;

FIG. 2 is a diagram illustrating a reverse channel burst structure in the prior art;

FIG. 3 is a diagram illustrating a two-row RC field data format in reverse channel signaling in the prior art;

fig. 4 is a flowchart illustrating a reverse channel signaling coding method according to an embodiment of the disclosure;

fig. 5a is a schematic diagram of a first matrix provided by an embodiment of the present disclosure;

fig. 5b is a schematic diagram of a second matrix provided by an embodiment of the present disclosure;

FIG. 6 is a diagram illustrating encoding of a matrix having multiple rows and multiple columns according to an embodiment of the disclosure;

fig. 7 is a schematic diagram of a structure of reverse channel signaling provided by an embodiment of the present disclosure;

fig. 8 is a flowchart illustrating a reverse channel signaling decoding method according to an embodiment of the disclosure;

fig. 9 is a schematic structural diagram of a reverse channel signaling coding apparatus according to an embodiment of the present disclosure;

fig. 10 is a schematic structural diagram of a reverse channel signaling decoding apparatus according to an embodiment of the present disclosure;

fig. 11 is a schematic structural diagram of an intercom device provided in an embodiment of the present disclosure;

fig. 12 is a schematic structural diagram of an electronic device according to an embodiment of the present disclosure.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present disclosure more clear, the technical solutions of the embodiments of the present disclosure will be described clearly and completely with reference to the drawings in the embodiments of the present disclosure, and it is obvious that the described embodiments are some embodiments of the present disclosure, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments disclosed herein without making any creative effort, shall fall within the protection scope of the present disclosure.

In the following description, the related narrowband communication protocols may include a Digital Mobile Radio standard (DMR) protocol, a Police Digital Trunking standard (PDT) protocol, a terrestrial Trunked Radio System (Trans), a dpmr (Digital Private Mobile Radio) protocol, and so on.

An Embedded information field (EMB field for short) for preventing co-channel interference, encryption indication, start or end of link control, forward error correction, etc.; the EMB field includes CC color code, PI information element, lcs information element, etc., and is usually 7 valid bits; the CC information unit is used for distinguishing signaling originated at another site and is mainly used for matching among interphones; the PI information unit is used for explaining whether a private mechanism is used or not; the lcs information element is used to illustrate the start, duration and end of signaling. The LCs field is used to indicate a single LC packet, with the remaining fields depending on the current system configuration and operating mode.

And a Reverse Channel signalling field (RC field for short) embedded in the signaling field, configured to carry Reverse Channel message data, and carry service effective data for implementing functions of priority call control, emergency call preemption, and the like according to a use requirement.

The Frame Synchronization (SYNC) is provided by a special bit sequence, marks the center position of the TDMA pulse, has an autocorrelation function with sharp unimodal characteristic, is convenient to distinguish from the information code, and can obtain Frame Synchronization information by detecting the special bit sequence.

At present, the related intercom devices mostly adopt a dual-Time-slot TDMA (Time division multiple access) technology, referring to fig. 1, the Time slot identifiers of two TDMA physical channels are 1 and 2, Time slot 1 and Time slot 2 alternate with each other, and Time slot 1 and Time slot 2 can be used as a traffic channel and/or a back channel according to the application scenario, in addition, referring to fig. 2, the existing back channel burst frame structure generally includes a 48-bit back channel synchronization word (SYNC) and a 48-bit embedded signaling field, wherein the 48-bit embedded signaling field includes a 32-bit RC field and a 16-bit EMB field, the 32-bit RC field and the 16-bit EMB field are coded lengths, the actual 32-bit RC field only carries 11-bit valid data bits, as referring to fig. 3, RC (10) -RC (0) represent the carried valid data bits, and protected by hamming, the second row includes parity bits PC (0) -check bits PC (15) of each column The number of effective data bits is small, and if more effective data need to be transmitted, the effective data need to be transmitted for multiple times, so that the cost of transmission time is long, and the use requirement is not met.

To solve the above technical problem, an embodiment of the present disclosure provides a reverse channel signaling coding method, as shown in fig. 4, the method mainly includes the following steps:

step 401, obtaining service valid data and EMB domain parameter data to be sent;

the specific implementation of the service valid data may be control instruction information sent by the intercom device to the other intercom device.

Step 402, generating a multi-row and multi-column matrix based on the service effective data and the EMB domain parameter data; the number of rows of the multi-row and multi-column matrix is more than 2;

during specific implementation, arranging the service effective data into a first matrix; arranging the EMB domain parameter data into a second matrix; the column numbers of the first matrix and the second matrix are the same; the first matrix and the second matrix are arranged into a plurality of rows and columns of matrices, and the number of columns of the plurality of rows and columns of matrices is the same as the number of columns of the first matrix and the second matrix. Namely, the matrix with multiple rows and multiple columns comprises data with more than or equal to 3N bits; wherein N is the number of columns of the matrix of rows and columns. Preferably, the EMB domain parameter data is N bits, and the service valid data is 2N, 3N, or 4N bits; preferably, the matrix with multiple rows and multiple columns adopts four rows, for example, the matrix includes 4 rows and 7 columns, wherein, the service valid data is 3 rows and 7 columns, and the EMB domain parameter data is 1 row and 7 columns, so that the transmission performance of the generated reverse channel signaling is good, and no additional hardware configuration is required.

Step 403, encoding the matrix with multiple rows and columns to obtain intermediate encoded data with check bits in each row;

preferably, the QR coding processing is carried out on the matrix with multiple rows and multiple columns to obtain intermediate coding data with QR check BITs in each row, the QR coding has good error correction capability, for example, 4 rows and 7 columns of coding data, each row adopts the QR coding to expand from 7BIT to 16BIT, 2BIT can be corrected to detect 5BIT, the performance is excellent, the check BITs are within an acceptable range, and the performance is better than that of the original reverse channel signaling.

For convenience of understanding, the process of the

above steps

402 and 403 is described by taking the example that the length of the service valid data is 21 bits and the length of the EMB field parameter data is 7 bits.

As shown in fig. 5a and 5b, the service effective data of 21 bits are arranged in a first matrix form of 3 rows and 7 columns, as shown in fig. 5 a; the 7-bit EMB domain parameter data is arranged in a second matrix form of 1 row and 7 columns as shown in fig. 5b, and then the first matrix of 3 rows and 7 columns and the second matrix of 1 row and 7 columns are arranged in a matrix of 4 rows and 7 columns.

As shown in fig. 6, QR coding is performed on the 4 rows and 7 columns of matrix after arrangement, and intermediate coded data including QR check bits in each row may be obtained by multiplying the 4 rows and 7 columns of matrix by a generator matrix QR (16,7,6), where the intermediate coded data includes 4 rows and 16 columns.

Step 404, interleaving the intermediate coded data and configuring a preset synchronous word to obtain an information bit sequence;

specifically, interleaving the intermediate coded data to obtain an interleaved coding result; dividing the interleaving coding result into a first sequence and a second sequence, wherein the bit number of the first sequence is the same as that of the second sequence; and symmetrically arranging the first sequence and the second sequence on two sides of a preset synchronous word to obtain an information bit sequence.

In the process of interleaving, intermediate coded data can be input according to rows and output according to columns, and an interleaving coding result is obtained. Alternatively, the index of the intermediate coded data may be multiplied by 33, and the remainder is 64, and the index of the intermediate coded data may be an index sorted by columns in the matrix, for example, taking a matrix with 4 rows and 16 columns as an example, the first column index bit in the first row is 1, the first column index in the second row is 2, the first column index in the third row is 3, the first column index in the fourth row is 4, the second column index bit in the first row is 5, and so on. The data processed by interleaving has better anti-interference performance to burst errors in the channel. And when the preset synchronous word is configured, the preset synchronous word is configured in the middle position of the reverse channel signaling.

Step 405, generating reverse channel signaling based on the information bit sequence.

In step 405, when generating the reverse channel signaling based on the information bit sequence, bit replication may be performed first, and then symbol mapping may be performed; or symbol mapping may be performed first and then symbol replication may be performed. The two processing methods are described below.

Optionally, the first scheme: firstly, carrying out bit copying processing and then carrying out symbol mapping processing. Specifically, the first S-bit data of the information bit sequence is copied for a first preset number of times as a first additional bit; wherein S is a positive integer greater than or equal to 1; copying the last S bit data of the information bit sequence for a first preset number of times to serve as a second additional bit; and arranging the first additional bit, the information bit sequence and the second additional bit in sequence, and performing symbol mapping processing on an arrangement result to obtain a reverse channel signaling. The first additional bit and the second additional bit are used for enhancing the transceiving stability and avoiding instability in power switching.

For more clearly explaining the above scheme, taking 64-bit intermediate encoded data and a 48-bit preset sync word as an example, after step 404, the 64-bit intermediate encoded data is symmetrically split into a 32-bit first sequence and a 32-bit second sequence, and the 48-bit preset sync word is configured between the 32-bit first sequence and the 32-bit second sequence to obtain a total 112-bit information bit sequence. In the bit copying, the first 2 bits of the 112-bit information bit sequence can be copied for 2 times, and 4 bits in total are used as first additional bits; the last 2 bits of the 112-bit information bit sequence are copied for 2 times, 4 bits are used as second additional bits, the first additional bit of 4 bits is arranged in front of the 112-bit information bit sequence, and the second additional bit of 4 bits is arranged behind the 112-bit information bit sequence, so that 120-bit data is obtained. In addition, when copying bits, the first 4 bits of the information bit sequence may be copied 1 time, and 4 bits in total may be used as the first additional bit; the last 4 bits of the 112-bit information bit sequence are copied 1 time, 4 bits in total are used as second additional bits, the first additional bit of 4 bits is arranged in front of the 112-bit information bit sequence, and the second additional bit of 4 bits is arranged behind the 112-bit information bit sequence, so that 120-bit data is obtained. And after the bits are copied, carrying out symbol mapping processing, and mapping each 2 bits into 1 symbol to obtain reverse channel signaling, wherein the reverse channel signaling comprises 60 symbols.

Optionally, in the second scheme, symbol mapping processing is performed first, and then symbol copying processing is performed. Similarly, taking 64-bit intermediate encoded data and a 48-bit preset sync word as an example, after step 404, the 64-bit intermediate encoded data is symmetrically split into a 32-bit first sequence and a 32-bit second sequence, and the 48-bit preset sync word is configured between the 32-bit first sequence and the 32-bit second sequence, so as to obtain a total 112-bit information bit sequence. After symbol mapping processing is performed on the 112-bit information bit sequence, every 2 bits are mapped into 1 symbol, and a symbol sequence containing 56 symbols is obtained.

When the symbols are copied, the 1 st symbol of the symbol sequence may be copied 2 times as a first additional bit, the last 1 symbol of the symbol sequence may be copied 2 times as a second additional bit, and the first additional bit, the symbol sequence and the second additional bit are arranged in sequence to obtain the reverse channel signaling, where the reverse channel signaling includes 60 symbols. In addition, during the copying, the first 2 symbols of the symbol sequence may be copied 1 time to serve as a first additional bit, the last 2 symbols of the symbol sequence may be copied 1 time to serve as a second additional bit, and the first additional bit, the symbol sequence and the second additional bit are arranged in sequence to obtain the reverse channel signaling, where the reverse channel signaling includes 60 symbols. The first additional bit and the second additional bit are used for enhancing the transceiving stability and avoiding instability in power switching.

After obtaining the reverse channel signaling based on any one of the above schemes, the reverse channel signaling is subjected to up-sampling processing and modulation processing to obtain a signal to be sent, and then the signal can be sent. In the specific implementation, the intercom device may process 60 symbols after symbol mapping processing by using a transmission sampling rate of 96K and 20 times of upsampling in the upsampling processing, and the like, and obtain 1200 points by using 20 times of upsampling, and transmit the 1200 points by using a sampling rate of 96K, where the time duration for transmitting the reverse channel signaling is 12.5 ms.

In the embodiment of the disclosure, the service valid data and the EMB domain parameter data are generated into a multi-row and multi-column matrix, and the number of rows of the multi-row and multi-column matrix is more than 2; coding the matrix of a plurality of rows and a plurality of columns to obtain intermediate coded data of which each row contains check bits; interleaving the intermediate coded data and configuring a preset synchronous word to obtain an information bit sequence; generating reverse channel signaling based on the information bit sequence; compared with the prior art, the reverse channel signaling generated by the method provided by the embodiment of the disclosure can bear more effective data bits, meets the use requirement, and has relatively short transmission time under the condition of relatively long transmitted data, thereby effectively reducing the time cost and improving the efficiency.

Optionally, as shown in fig. 7, the structure of the reverse channel signaling generated by using the coding method of the embodiment of the present disclosure is shown. The reverse channel signaling is sequentially a first additional bit P _4(4 bits), EMB domain data (8 bits), RC domain data (24 bits), a preset synchronization word (48 bits), RC domain data (24 bits), EMB domain data (8 bits) and a second additional bit P _4(4 bits); wherein, the left EMB domain data (8 bits) and the RC domain data (24 bits) form a first sequence; the right EMB domain data (8 bits) and the RC domain data (24 bits) form a second sequence. The RC domain data of the reverse channel signaling carries 21-bit effective data bits and 27-bit check bits; the EMB domain data comprises a 4-bit CC color code, a 1-bit PI information unit, a 2-bit LCSS information unit and a 9-bit check bit, wherein the color code in the EMB domain is used for realizing matching among the talkback devices, and is favorable for realizing intercommunication with the talkback devices of other manufacturers; the first additional bit and the second additional bit are used for enhancing the transceiving stability.

It should be noted that, as described above, taking the service valid data as 21 bits and the EMB domain parameter data as 7 bits as an example, the length of the service valid data that can be carried in one transmission can be extended from 11 bits to 21 bits by the encoding method in the embodiment of the present disclosure, so that more valid data can be carried, and after the steps of encoding, interleaving, symbol mapping, and the like, the data length is extended from 96 bits to 120 bits; because the length of one time slot is 30ms, but the length of the generated reverse channel signaling is only 12.5ms, the problem that effective data bits carried by the original reverse channel signaling are insufficient is solved, and the characteristics of the reverse channel in the field of interphone communication can be supported, so that the requirement of a receiving end on high response speed is met, additional hardware does not need to be changed, and the realization is easy; compared with the scheme of directly adding effective data bits in the original reverse channel signaling, the method can avoid the problems of poor system performance, incapability of meeting transmission requirements and the like. Meanwhile, under the condition that the transmitted data is long, the response speed is guaranteed, meanwhile, the time for completing transmission is relatively short, the time cost is effectively reduced, and the efficiency is improved.

In addition, an embodiment of the present disclosure further provides a reverse channel signaling decoding method, as shown in fig. 8, the decoding method includes:

step 801, performing demapping processing on the demodulated reverse channel signaling to obtain an information bit sequence;

after receiving the signal, firstly demodulating the signal to obtain a reverse channel signaling. The demodulation method may be predefined, and the demodulation is the inverse process of the modulation and corresponds to the modulation method.

Step 802, extracting the information bit sequence to obtain encoded data with a preset number of bits;

the preset number of bits is preset and may be 64 bits.

Step 803, deinterleave the encoded data to obtain intermediate encoded data with each row including check bits; the intermediate coded data comprises a matrix with a plurality of rows and a plurality of columns, wherein the number of rows of the matrix is more than 2;

and step 804, decoding the intermediate coded data to obtain service valid data and EMB domain parameter data.

If a QR coding mode is adopted at the sending end, QR decoding is adopted at the receiving end to obtain QR decoding data.

Based on the same concept, the present disclosure provides a reverse channel signaling encoding apparatus in an embodiment, and the specific implementation of the apparatus may refer to the description of the method embodiment, and repeated details are not repeated, as shown in fig. 9, the apparatus mainly includes:

an obtaining module 901, configured to obtain service valid data and EMB domain parameter data to be sent;

a generating module 902, configured to generate a matrix with multiple rows and multiple columns based on the service valid data and the EMB domain parameter data; the number of rows of the multi-row and multi-column matrix is more than 2; the number of columns of the multi-row multi-column matrix is the same as the number of columns of a coding method specified in the narrow-band communication protocol;

the encoding module 903 is configured to perform encoding processing on the multiple rows and multiple columns of matrices to obtain intermediate encoded data in which each row includes a check bit;

an interleaving module 904, configured to configure a preset sync word after interleaving the intermediate encoded data to obtain an information bit sequence;

a mapping module 905, configured to generate the reverse channel signaling based on the information bit sequence.

In a specific embodiment, the generating module 902 is configured to arrange the service valid data into a first matrix; arranging the EMB domain parameter data into a second matrix; the column numbers of the first matrix and the second matrix are the same; the first matrix and the second matrix are arranged into a plurality of rows and columns of matrices, and the number of columns of the plurality of rows and columns of matrices is the same as the number of columns of the first matrix and the second matrix.

Wherein, the matrix of multirow multiseriate includes: greater than or equal to 3N bits of data; wherein N is the number of columns of the matrix of rows and columns. The EMB domain parameter data is N bits, and the service effective data is 2N, 3N or 4N bits; preferably, the EMB domain parameter data is 7 bits, and the second matrix is 1 row and 7 columns; the service effective data is 21 bits, and the first matrix is 3 rows and 7 columns; the matrix of rows and columns is 4 rows and 7 columns.

In one embodiment, the duration for transmission of the reverse channel signaling is 12.5 ms.

In a specific embodiment, the encoding module 903 is configured to perform QR encoding on multiple rows and multiple columns of matrices to obtain intermediate encoded data in which each row includes a QR check bit.

In a specific embodiment, the interleaving module 904 is configured to perform interleaving processing on the intermediate encoded data to obtain an interleaving encoding result; dividing the interleaving coding result into a first sequence and a second sequence, wherein the bit number of the first sequence is the same as that of the second sequence; and symmetrically arranging the first sequence and the second sequence on two sides of a preset synchronous word to obtain an information bit sequence.

In a specific embodiment, the mapping module 905 is configured to copy the first S-bit data of the information bit sequence by a first preset number of times as a first additional bit; wherein S is a positive integer greater than or equal to 1; copying the last S bit data of the information bit sequence for a first preset number of times to serve as a second additional bit; and arranging the first additional bit, the information bit sequence and the second additional bit in sequence to obtain a sequencing result, and performing symbol mapping processing on the arrangement result to obtain a reverse channel signaling.

In a specific embodiment, the mapping module 905 is configured to perform symbol mapping processing on an information bit sequence to obtain a symbol sequence; copying the first M symbols of the symbol sequence for a second preset number of times to serve as first additional bits of reverse channel signaling; wherein M is a positive integer greater than or equal to 1; copying the last M symbols of the symbol sequence for a second preset number of times to serve as a second additional bit of the reverse channel signaling; and arranging the first additional bit, the symbol sequence and the second additional bit in sequence to obtain the reverse channel signaling.

In addition, an embodiment of the present disclosure further provides a device for decoding reverse channel signaling, where specific implementation of the device may refer to the description of the method embodiment, and repeated details are not repeated, as shown in fig. 10, the device mainly includes:

a demapping module 1001, configured to perform demapping processing on the demodulated reverse channel signaling to obtain an information bit sequence;

an extracting module 1002, configured to extract an information bit sequence to obtain encoded data with a preset number of bits;

a deinterleaving module 1003, configured to perform deinterleaving on the encoded data to obtain intermediate encoded data with each row including a check bit; the intermediate coded data comprises a matrix with a plurality of rows and a plurality of columns, wherein the number of rows of the matrix is more than 2;

and the decoding module 1004 is configured to decode the intermediate encoded data to obtain service valid data and EMB domain parameter data.

In a specific embodiment, the decoding module 1004 is configured to perform QR decoding on the intermediate encoded data to obtain the service valid data and the EMB domain parameter data.

Based on the same technical concept, an embodiment of the present disclosure further provides an intercom device, as shown in fig. 11, the intercom device includes an encoding device and a decoding device, the encoding device implements the above-mentioned reverse channel signaling encoding method, and the decoding device implements the above-mentioned reverse channel signaling decoding method. Specifically, the encoding device includes: a processing module 1101 and a sending module 1102; wherein the content of the first and second substances,

a processing module 1101, configured to obtain service valid data to be sent and EMB domain parameter data; generating a multi-row and multi-column matrix based on the service effective data and the EMB domain parameter data; the number of rows of the multi-row and multi-column matrix is more than 2; coding the matrix of a plurality of rows and a plurality of columns to obtain intermediate coded data of which each row contains check bits; interleaving the intermediate coded data and configuring a preset synchronous word to obtain an information bit sequence; and carrying out symbol copying and symbol mapping processing on the information bit sequence to obtain a reverse channel signaling.

A sending module 1102, configured to modulate the reverse channel signaling and transmit the reverse channel signaling.

A decoding apparatus, comprising: a receiving module 1103 and a processing module 1101; wherein the content of the first and second substances,

a receiving module 1103, configured to acquire a received signal and demodulate the signal;

a processing module 1101, configured to perform demapping processing on the demodulated reverse channel signaling to obtain an information bit sequence; extracting the information bit sequence to obtain coded data with preset digits; de-interleaving the encoded data to obtain intermediate encoded data with each row containing check bits; the intermediate coded data comprises a matrix with a plurality of rows and a plurality of columns, wherein the number of rows of the matrix is more than 2; and decoding the intermediate coded data to obtain service effective data and EMB domain parameter data.

Based on the same concept, an embodiment of the present disclosure further provides an electronic device, as shown in fig. 12, the electronic device mainly includes: a processor 1201, a memory 1202, and a communication bus 1203, wherein the processor 1201 and the memory 1202 communicate with each other via the communication bus 1203. The memory 1202 stores a program executable by the processor 1201, and the processor 1201 executes the program stored in the memory 1202 to implement the following steps:

acquiring service valid data and EMB domain parameter data to be sent;

generating a multi-row and multi-column matrix based on the service effective data and the EMB domain parameter data; the number of rows of the multi-row and multi-column matrix is more than 2;

coding the matrix of a plurality of rows and a plurality of columns to obtain intermediate coded data of which each row contains check bits;

carrying out symbol copying and symbol mapping processing on the information bit sequence to obtain a reverse channel signaling;

alternatively, the first and second electrodes may be,

de-interleaving the encoded data to obtain intermediate encoded data with each row containing check bits; the intermediate coded data comprises a matrix with a plurality of rows and a plurality of columns, wherein the number of rows of the matrix is more than 2;

and decoding the intermediate coded data to obtain service effective data and EMB domain parameter data.

The communication bus 1203 mentioned in the above electronic device may be a Peripheral Component Interconnect (PCI) bus, an Extended Industry Standard Architecture (EISA) bus, or the like. The communication bus 1203 may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is shown in FIG. 12, but this is not intended to represent only one bus or type of bus.

The Memory 1202 may include a Random Access Memory (RAM) or a non-volatile Memory (non-volatile Memory), such as at least one disk Memory. Alternatively, the memory may be at least one memory device located remotely from the processor 1201.

The Processor 1201 may be a general-purpose Processor, including a Central Processing Unit (CPU), a Network Processor (NP), a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other Programmable logic devices, discrete gates or transistor logic devices, and discrete hardware components.

In still another embodiment of the present disclosure, there is also provided a computer-readable storage medium having stored therein a computer program which, when run on a computer, causes the computer to execute the reverse channel signaling encoding method or the reverse channel signaling decoding method described in the above embodiments.

In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, cause the processes or functions described in accordance with the embodiments of the disclosure to occur, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored on a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, from one website site, computer, server, or data center to another website site, computer, server, or data center via wire (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wirelessly (e.g., infrared, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that includes one or more of the available media. The available media may be magnetic media (e.g., floppy disks, hard disks, tapes, etc.), optical media (e.g., DVDs), or semiconductor media (e.g., solid state drives), among others.

It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The foregoing are merely exemplary embodiments of the present invention, which enable those skilled in the art to understand or practice the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for reverse channel signaling encoding, comprising:

acquiring service valid data and EMB domain parameter data to be sent;

generating a multi-row and multi-column matrix based on the service effective data and the EMB domain parameter data; wherein the number of rows of the multi-row and multi-column matrix is greater than 2;

generating reverse channel signaling based on the information bit sequence.

2. The reverse channel signaling encoding method of claim 1, wherein said generating a matrix of rows and columns based on said traffic valid data and said EMB domain parameter data comprises:

arranging the service effective data into a first matrix;

3. The reverse channel signaling coding method according to claim 1 or 2, wherein the EMB field parameter data is N bits, the service valid data is 2N, 3N or 4N bits, and N is the number of columns of the matrix.

4. The reverse channel signaling coding method of claim 2, wherein the EMB domain parameter data is 7 bits, and the second matrix is 1 row and 7 columns;

the matrix of rows and columns is 4 rows and 7 columns.

5. The reverse channel signaling coding method according to claim 1 or 4, characterized in that the time duration for transmitting the reverse channel signaling is 12.5 ms.

6. The method of claim 1, wherein the encoding the matrix with multiple rows and multiple columns to obtain intermediate encoded data with check bits in each row comprises:

7. The method of claim 1, wherein the interleaving the intermediate encoded data and configuring a predetermined sync word to obtain an information bit sequence comprises:

8. The reverse channel signaling encoding method of claim 1, wherein generating reverse channel signaling based on the information bit sequence comprises:

9. The reverse channel signaling encoding method of claim 1, wherein generating reverse channel signaling based on the information bit sequence comprises:

10. An apparatus for encoding reverse channel signaling, comprising:

the generating module is used for generating a multi-row and multi-column matrix based on the service effective data and the EMB domain parameter data; wherein the number of rows of the multi-row and multi-column matrix is greater than 2;

and the mapping module is used for generating the reverse channel signaling based on the information bit sequence.

11. A method for decoding reverse channel signaling, comprising:

12. The reverse channel signaling decoding method of claim 11, wherein said decoding the intermediate encoded data to obtain service valid data and EMB domain parameter data comprises:

13. A reverse channel signaling decoding apparatus, comprising:

14. An intercom apparatus, comprising an encoding device implementing the reverse channel signaling encoding method of any one of claims 1 to 9 and a decoding device implementing the reverse channel signaling decoding method of claim 11 or 12.

15. An electronic device, comprising: the system comprises a processor, a memory and a communication bus, wherein the processor and the memory are communicated with each other through the communication bus;

the memory for storing a computer program;

the processor is configured to execute the program stored in the memory to implement the reverse channel signaling encoding method of any one of claims 1 to 9 or the reverse channel signaling decoding method of claim 11 or 12.

16. A computer-readable storage medium storing a computer program, wherein the computer program, when executed by a processor, implements the method for encoding reverse channel signaling according to any one of claims 1 to 9 or the method for decoding reverse channel signaling according to claim 11 or 12.