CN117498984A - Wireless communication decoding method, device, equipment and storage medium - Google Patents
Wireless communication decoding method, device, equipment and storage medium Download PDFInfo
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- H—ELECTRICITY
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- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0056—Systems characterized by the type of code used
- H04L1/0057—Block codes
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/16—Threshold monitoring
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- H—ELECTRICITY
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Abstract
The invention provides a wireless communication decoding method, a device, equipment and a storage medium, belonging to the field of wireless communication, wherein the method comprises the following steps: receiving first compressed data sent by a first channel; if the receiving is successful, L2 decoding is carried out on the first compressed data, and a first decoding error level is determined; if the first decoding error level is greater than or equal to a first error level threshold, receiving second compressed data sent by a second channel; if the receiving is successful, L2 decoding is carried out on the second compressed data, and a second decoding error level is determined; if the second decoding error level is smaller than the first error level threshold, performing L1 decoding on the second compressed data after L2 decoding; if the second decoding error level is greater than or equal to the first error level threshold and smaller than the second error level threshold, acquiring a physical signal according to a preset method; if the second decoding error level is greater than or equal to the second error level threshold, the L3 packet is complemented according to the past cache data, and the invention can improve the communication reliability.
Description
Technical Field
The present invention relates to the field of wireless communications technologies, and in particular, to a wireless communication decoding method, device, apparatus, and storage medium.
Background
In the wireless signal transmission process, because of reasons such as channel noise, multipath interference, other radio frequency interference and the like, error codes appear in transmission information, meanwhile, wireless transmission is generally carried out in a mode of adding load to a packet header or a synchronous header, the packet header can carry out protection transmission under general conditions, such as BCH (broadcast channel), polar coding and the like, the load is generally subjected to CRC (cyclic redundancy check), if a receiving end does not receive the packet or detects that the load is wrong through CRC after receiving the packet, the receiving end can inform a transmitting end to carry out retransmission, or a multiple-receiving method is adopted, and the receiving end selects the packet with the packet header and the load which are both in error to decode to obtain signals; however, when the bit error rate is high, both methods are not effective in solving the problem.
Disclosure of Invention
The invention provides a wireless communication decoding method, a device, equipment and a storage medium, which improve wireless communication by adding redundancy and introducing a cooperation and multistage decoding mode, so that the reliability of the wireless communication can be improved.
In a first aspect, an embodiment of the present invention provides a wireless communication decoding method, including:
receiving first compressed data sent by a first channel;
if the first compressed data is successfully received, L2 decoding is carried out on the first compressed data, and a first decoding error level is determined according to a decoding result;
if the first decoding error level is greater than or equal to a first error level threshold, receiving second compressed data sent by a second channel;
if the second compressed data is successfully received, L2 decoding is carried out on the second compressed data, and a second decoding error level is determined according to a decoding result;
if the second decoding error level is smaller than the first error level threshold, performing L1 decoding on the second compressed data after L2 decoding to obtain a physical signal in the second compressed data;
if the second decoding error level is greater than or equal to the first error level threshold and smaller than the second error level threshold, acquiring a physical signal in the first compressed data or the second compressed data according to a preset method;
and if the second decoding error level is greater than or equal to a second error level threshold, performing L3 packet padding according to the past cache data to acquire a physical signal corresponding to the second compressed data.
Optionally, the method further comprises:
if the first compressed data is failed to be received, the second compressed data sent by the second channel is directly received.
Optionally, the method further comprises:
and if the first decoding error level is smaller than the first error level threshold, performing L1 decoding on the first compressed data after L2 decoding to obtain a physical signal in the first compressed data.
Optionally, the method further comprises:
if the second compressed data fails to be received and the first decoding error level is greater than or equal to the first error level threshold and smaller than the second error level threshold, performing L1 decoding on the first compressed data after L2 decoding to obtain a physical signal in the first compressed data;
if the second compressed data fails to be received and the first decoding error level is greater than or equal to the second error level threshold, performing L3 packet padding according to the past cache data to obtain a physical signal corresponding to the first compressed data.
Optionally, acquiring the physical signal in the first compressed data or the second compressed data according to a preset method includes:
if the first decoding error level is greater than or equal to the first error level threshold and smaller than the second error level threshold, judging the levels of the first decoding error level and the second decoding error level;
if the first decoding error level is greater than the second decoding error level, performing L1 decoding on the second compressed data after L2 decoding to obtain a physical signal in the second compressed data;
if the first decoding error level is smaller than the second decoding error level, performing L1 decoding on the first compressed data after L2 decoding to obtain a physical signal in the first compressed data;
and if the first decoding error level is equal to the second decoding error level, performing L1 decoding on the second compressed data or the first compressed data after L2 decoding to obtain a physical signal in the second compressed data or the first compressed data.
Optionally, acquiring the physical signal in the first compressed data or the second compressed data according to a preset method, further includes:
and if the first decoding error level is greater than or equal to the second error level threshold, performing L1 decoding on the second compressed data after L2 decoding to obtain a physical signal in the second compressed data.
Optionally, the first compressed data and the second compressed data are the same compressed data sent by the sending end in different channels;
the compressed data is divided into important data and secondary data according to the coding model;
important data includes, but is not limited to: linear prediction coefficients and/or band energy coefficients; secondary data includes, but is not limited to: residual signals of linear prediction and/or frequency point data with smaller amplitude in transform coding;
the first error level threshold and the second error level threshold are determined according to decoding quality of the important data and the secondary data after L2 decoding.
In a second aspect, an embodiment of the present invention provides a wireless communication decoding apparatus, including:
the receiving module is used for receiving the first compressed data sent by the first channel;
the decoding module is used for carrying out L2 decoding on the first compressed data and determining a first decoding error level according to a decoding result if the first compressed data is successfully received;
the receiving module is further configured to receive second compressed data sent by the second channel if the first decoding error level is greater than or equal to the first error level threshold;
the decoding module is further used for performing L2 decoding on the second compressed data and determining a second decoding error level according to a decoding result if the second compressed data is successfully received;
the decoding module is further configured to perform L1 decoding on the second compressed data after L2 decoding to obtain a physical signal in the second compressed data if the second decoding error level is less than the first error level threshold;
the decoding module is further configured to obtain the physical signal in the first compressed data or the second compressed data according to a preset method if the second decoding error level is greater than or equal to the first error level threshold and less than the second error level threshold;
and the decoding module is further used for carrying out L3 packet filling according to the past cache data to obtain a physical signal corresponding to the second compressed data if the second decoding error level is greater than or equal to a second error level threshold.
In a third aspect, an embodiment of the present invention provides an electronic device, including a memory and a processor, where the memory stores a computer program, and the processor implements the method according to any implementation manner of the first aspect when executing the program.
In a fourth aspect, embodiments of the present invention provide a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements a method according to any of the implementations of the first aspect.
The invention provides a wireless communication decoding method, a device, equipment and a storage medium, wherein the method comprises the following steps: receiving first compressed data sent by a first channel; if the first compressed data is successfully received, L2 decoding is carried out on the compressed data, and a first decoding error level is determined according to a decoding result; if the first decoding error level is greater than or equal to a first error level threshold, receiving second compressed data sent by a second channel; if the second compressed data is successfully received, L2 decoding is carried out on the second compressed data, and a second decoding error level is determined according to a decoding result; if the second decoding error level is smaller than the first error level threshold, performing L1 decoding on the second compressed data after L2 decoding to obtain a physical signal in the second compressed data; if the second decoding error level is greater than or equal to the first error level threshold and smaller than the second error level threshold, acquiring a physical signal in the first compressed data or the second compressed data according to a preset method; and if the second decoding error level is greater than or equal to a second error level threshold, performing L3 packet padding according to the past cache data to acquire a physical signal corresponding to the second compressed data. The invention can improve the reliability of wireless communication data transmission.
It should be understood that the description in this summary is not intended to limit the critical or essential features of the embodiments of the invention, nor is it intended to limit the scope of the invention. Other features of the present invention will become apparent from the description that follows.
Drawings
The above and other features, advantages and aspects of embodiments of the present invention will become more apparent by reference to the following detailed description when taken in conjunction with the accompanying drawings. In the drawings, the same or similar reference numerals denote the same or similar elements.
Fig. 1 is a flowchart of a wireless communication decoding method according to an embodiment of the present invention;
FIG. 2 is a flow chart of another wireless communication decoding method according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a wireless communication decoding device according to an embodiment of the present invention;
fig. 4 is a block diagram of an electronic device according to an embodiment of the present invention.
Detailed Description
In order to enable a person skilled in the art to better understand the technical solutions in one or more embodiments of the present specification, the technical solutions in one or more embodiments of the present specification will be clearly and completely described below with reference to the drawings in one or more embodiments of the present specification, and it is obvious that the described embodiments are only some embodiments of the present specification, not all embodiments. All other embodiments, which can be made by one or more embodiments of the present disclosure without inventive faculty, are intended to be within the scope of the present disclosure.
It should be noted that, the description of the embodiment of the present invention is only for the purpose of more clearly describing the technical solution of the embodiment of the present invention, and does not constitute a limitation on the technical solution provided by the embodiment of the present invention.
The decoding process adopted in the invention comprises the following steps: l0, L1, L2 and L3 are complemented.
Specifically: the L0 of the invention refers in particular to whether a wireless data packet is received or not, whether the data packet is received or not can be defined in different grades according to the system design, the strict limit can be set to be that the packet head is completely correct, the data reception is complete, and the requirement can be properly relaxed; and L0 indicates that the received packet is not meant to be correct when received.
Further, after the data packet is received, L0 indicates that decoding of L2 can be performed, decoding of L2 can find and attempt to correct errors of the data packet, if the errors are out of the error correction range, L3 is started to perform regeneration of a physical signal, namely packet supplementing processing, and if the errors are slight, the data packet enters an L1 decoder to achieve decoding of the physical signal.
Optionally, L1 is typically a physical signal codec, also called a source codec, and in the present invention, L1 source decoding may be also specifically used.
Alternatively, L3 is a physical signal regeneration or a packet-filling process, which is error correction in a broad sense.
Fig. 1 is a flowchart of a wireless communication decoding method according to an embodiment of the present invention. As shown in fig. 1, includes:
it should be noted that, the technical scheme of the invention is based on the multiple-input multiple-output technology for data transmission; for example: the transmitting terminal transmits the i-frame compressed data and the i-1 frame compressed data to the receiving terminal through a first channel at the moment i, and the two frames of data can be respectively transmitted or packaged into a packet for one-time transmission;
the ith frame data is sent to the receiving end at the ith moment and the i+1 moment through the jth channel and the k channel respectively.
Alternatively, by transmitting data over channels j and k at times i and i+1, respectively, redundancy and reliability of transmission is increased. And when the transmission of the channel j fails, the channel k can be quickly switched to, so that the success rate of data transmission is improved; meanwhile, in the transmission process, the optimal transmission channel can be selected according to the real-time channel quality, so that the stability and the robustness of data transmission are further improved.
The number of times of transmitting and receiving data is not limited to two, but may be three or four.
S101, receiving first compressed data sent by a first channel.
Optionally, the compressed data is separated into important data and secondary data according to the coding model; different levels of error correction protection are performed on data of different importance, and algorithms used include, but are not limited to, hamming codes, LDPC codes, and Turbo codes.
Optionally, the important data includes, but is not limited to: linear prediction coefficients and/or band energy coefficients; secondary data includes, but is not limited to: residual signals of linear prediction and/or frequency point data with smaller amplitude in transform coding.
Optionally, by introducing a plurality of error correction code schemes such as hamming codes, LDPC codes, turbo codes and the like, the data are divided into important data and secondary data according to the importance of the data, and proper error correction codes are adopted for the data with different levels, so that the important data is more strongly error correction protected, the reliability of the transmitted data is improved, and more excellent error correction capability can be shown in a severe transmission environment.
S102, if the first compressed data is successfully received, L2 decoding is carried out on the first compressed data, and a first decoding error level is determined according to a decoding result.
Optionally, if the first compressed data fails to be received, directly receiving the second compressed data sent by the second channel; after the second compressed data is received successfully, the subsequent decoding operation is performed according to steps S104 to S107.
Optionally, the first decoding error level is determined according to decoding quality of the important data and the secondary data after L2 decoding.
S103, if the first decoding error level is greater than or equal to a first error level threshold, receiving second compressed data sent by a second channel.
Optionally, if the first decoding error level is smaller than the first error level threshold, performing L1 decoding on the L2 decoded first compressed data to obtain a physical signal in the first compressed data.
Optionally, the first error level threshold is determined by setting a decoding accuracy threshold for the important data and a decoding accuracy threshold for the secondary data.
Illustratively, if the important data is completely correct, the secondary data is also completely correct or is corrupted by a small amount, i.e., the accuracy of the decoding is greater than the first accuracy threshold, then it is determined that the decoding error level is less than the first error level threshold.
It should be noted that, the decoding accuracy threshold of the important data and the decoding accuracy threshold of the secondary data are determined according to the actual condition analysis of the compressed data.
And S104, if the second compressed data is successfully received, L2 decoding is carried out on the second compressed data, and a second decoding error level is determined according to a decoding result.
Optionally, if the second compressed data fails to be received and the first decoding error level is greater than or equal to the first error level threshold and less than the second error level threshold, performing L1 decoding on the first compressed data after L2 decoding to obtain a physical signal in the first compressed data;
if the second compressed data fails to be received and the first decoding error level is greater than or equal to a second error level threshold, carrying out L3 packet padding according to the past cache data to obtain a physical signal corresponding to the first compressed data; or selecting to receive the third compressed data and performing decoding operation on the third compressed data again, the specific decoding method may refer to steps S104-S107, which are not described herein again, and if decoding still fails, the next compressed data may be continuously received, in this embodiment, the number of times of receiving the data is not limited, and the nth data may be always received until the compressed data is successfully decoded, where N is a positive integer.
Optionally, the second decoding error level is determined according to the number of decoding error terms of the important data and the secondary data after L2 decoding.
Optionally, the second error level threshold is determined by setting a decoding accuracy threshold for the important data and a decoding accuracy threshold for the secondary data.
Illustratively, if there is any corruption of the important data or a substantial corruption of the secondary data, i.e., the decoding accuracy is less than the second accuracy threshold, then it is determined that the decoding error level is greater than the second error level threshold.
S105, if the second decoding error level is smaller than the first error level threshold, performing L1 decoding on the second compressed data after L2 decoding to obtain a physical signal in the second compressed data.
S106, if the second decoding error level is greater than or equal to the first error level threshold and smaller than the second error level threshold, acquiring the physical signal in the first compressed data or the second compressed data according to a preset method.
Optionally, acquiring the physical signal in the first compressed data or the second compressed data according to a preset method includes:
if the first decoding error level is greater than or equal to the first error level threshold and smaller than the second error level threshold, judging the levels of the first decoding error level and the second decoding error level;
if the first decoding error level is greater than the second decoding error level, performing L1 decoding on the second compressed data after L2 decoding to obtain a physical signal in the second compressed data;
if the first decoding error level is smaller than the second decoding error level, performing L1 decoding on the first compressed data after L2 decoding to obtain a physical signal in the first compressed data;
and if the first decoding error level is equal to the second decoding error level, performing L1 decoding on the second compressed data or the first compressed data after L2 decoding to obtain a physical signal in the second compressed data or the first compressed data.
Optionally, acquiring the physical signal in the first compressed data or the second compressed data according to a preset method, further includes:
and if the first decoding error level is greater than or equal to the second error level threshold, performing L1 decoding on the second compressed data after L2 decoding to obtain a physical signal in the second compressed data.
And S107, if the second decoding error level is greater than or equal to a second error level threshold, performing L3 packet padding according to the past cache data to acquire a physical signal corresponding to the second compressed data.
Optionally, when a serious error occurs, the data can be recovered by the L3 packet filling mode, so that the success rate of data recovery is greatly improved, and the reliability of data transmission is improved.
Optionally, according to different L2 decoding states, the L1 decoding mode is flexibly selected, so that decoding complexity and error correction efficiency can be effectively balanced, and flexibility and efficiency of data transmission are improved.
Fig. 2 is a flowchart illustrating another wireless communication decoding method according to an embodiment of the present invention, as shown in fig. 2:
tx is a transmitting end, and the encoding rule of the transmitting end is as follows:
Frame i is frequency j The method comprises the following steps: frame i-1 And Frame i ，Frame i-1 By code i-1 And code i Composition is prepared.
Frame i+1 Is frequency k The method comprises the following steps: frame i And Frame i+1 ，Frame i+1 By code i And code i+1 Is combined.
Specifically, the transmitting end divides the original data into a plurality of groups, and independently codes each group, and specifically adopts a double-group data combination mode to code so as to increase the redundancy of the data and improve the error correction capability; and by dispersing information on a plurality of frequencies or subcarriers, the information is encoded by a plurality of encoding nodes, thereby increasing the anti-interference capability and reliability.
Rx is a receiving end, and the decoding rule of the receiving end is as follows:
Decode1 i the process comprises the following steps:
to the Frame i Proceeding with L0 check, if the return value is bfi=0, executing L2Decode1 i Decoding.
If L0 or L2decode1 i And if the decoding is successful, executing an L1 decoding process.
If the return value of L0 check is 1 or L2decode1 i Failure to execute Decode2 i Decoding.
Decode2 i The process comprises the following steps:
to the Frame i+1 Proceeding with L0 check, if the return value is bfi=0, executing L2Decode2 i Decoding.
If L0 or L2decode2 i Decoding is successful, then L1 decoding is performed i And (3) a decoding process.
If the return value of L0 check is 1 or L2decode2 i Failure then execute L3Decode i Decoding.
The beneficial effects of the invention are illustrated by way of example in a preferred embodiment:
the transmitting end transmits the i-frame compressed data code (i) and the i-1-frame compressed data code (i-1) to the receiving end at the moment i.
Alternatively, the two frames of data may be transmitted separately or may be packaged into one package for transmission at a time.
Optionally, the ith frame data code (i) may be sent out at the ith time and the i+1 time through the jth channel and the k channel respectively, the compressed data code (i) may include data dat (i) to be transmitted, and the dat (i) may be divided into important bits and general bits according to a coding model, and data chk (i) performing different levels of error correction protection on information with different importance may be used, where the adopted algorithms include, but are not limited to, hamming codes, LDPC codes, turbo codes, and the like.
Alternatively, the receiving end first receives code (i) at time j channel, and if the data is not received (i.e., bfi=1), the receiving end goes to k channel to try to receive code (i). If code (i) is received in j channel, meaning bfi=0, then L2 decoding is performed on code (i), if L2 decoding is successful, then L1 decoding is performed to obtain physical signal of i frame.
Optionally, different criteria may be set for success or failure of L2 decoding, for example, a strict criteria is that all errors can be corrected by L2 decoding, where the decoding status is marked as Tp0 (j), but the criteria may be relaxed, that is, if important data (such as linear prediction coefficients, such as band energy coefficients, etc.) in dat (i) can be normally solved, and minor data (such as residual signals of linear prediction, frequency point data of smaller amplitude in transform coding, etc.) has a small number (i.e. error level < Thresh 1) which cannot be corrected, then L1 decoding may be directly performed to obtain physical signals of the i-th frame, and re-receiving or decoding of code (i) may be omitted when receiving data in k channels. When error level > =thresh 1, the flow is directly entered into receiving code (i) from k channel and performing subsequent decoding; at this time, the state may be divided into two cases, one is an error level < Thresh2, labeled Tp1 (j), and the other error level > =thresh2, labeled Tp2 (j). When the k channel receives code (i), bfi=1, if the j channel L2 state is in Tp1 (j) state, L1 decoding is carried out along Tp1 (j), and if the j channel L2 state is in Tp2 (j) state, L3 packet padding processing is directly carried out on i frame data; if bfi=0 when code (i) is received on k channels, L2 decoding is performed on code (i) received on k channels.
Optionally, similar to the j-channel receiving code (i), L2 decoding of the code (i) data of the k-channel may enter three states according to different error levels, that is Tp0 (k), tp1 (k), tp2 (k), if Tp0 (k) is the state of Tp1, L1 decoding is performed to obtain an i-frame physical signal, if Tp1 (k) is the state of Tp1, it needs to be compared with the state of j-channel L2 decoding, if j-channel is also the level of Tp1 (j) error, one L1 decoding is performed with a lower error level from Tp1 (j) and Tp1 (k) to obtain an i-frame physical signal, if j-channel L2 decoding is Tp2 (j), L1 decoding is performed with Tp1 (k) to obtain an i-frame physical signal, and if k-channel L2 decoding is the state of Tp2 (k), finally, an L3 packet supplementing mode is adopted to recover the i-frame physical signal.
Optionally, by adopting the technical scheme, the reliability and flexibility of the transmitted data can be improved, and the more excellent error correction capability can be shown in a severe transmission environment; and the stability and the robustness of data transmission are further improved by adopting a multi-channel transmission mode.
The embodiment of the invention provides a wireless communication decoding method, which comprises the following steps: receiving first compressed data sent by a first channel; if the first compressed data is successfully received, L2 decoding is carried out on the compressed data, and a first decoding error level is determined according to a decoding result; if the first decoding error level is greater than or equal to a first error level threshold, receiving second compressed data sent by a second channel; if the second compressed data is successfully received, L2 decoding is carried out on the second compressed data, and a second decoding error level is determined according to a decoding result; if the second decoding error level is smaller than the first error level threshold, performing L1 decoding on the second compressed data after L2 decoding to obtain a physical signal in the second compressed data; if the second decoding error level is greater than or equal to the first error level threshold and smaller than the second error level threshold, acquiring a physical signal in the first compressed data or the second compressed data according to a preset method; and if the second decoding error level is greater than or equal to a second error level threshold, performing L3 packet padding according to the past cache data to acquire a physical signal corresponding to the second compressed data. The invention can improve the reliability of wireless communication data transmission.
The following describes in detail an apparatus capable of performing the above-described wireless communication decoding method according to an embodiment of the present invention with reference to fig. 3.
Fig. 3 is a schematic structural diagram of a wireless communication decoding device according to an embodiment of the present invention; as shown in fig. 3, the decoding apparatus 30 includes:
a receiving module 301, configured to receive first compressed data sent by a first channel;
the decoding module 302 is configured to, if the first compressed data is received successfully, perform L2 decoding on the first compressed data and determine a first decoding error level according to a decoding result;
the receiving module 301 is further configured to receive second compressed data sent by the second channel if the first decoding error level is greater than or equal to the first error level threshold;
the decoding module 302 is further configured to, if the second compressed data is received successfully, perform L2 decoding on the second compressed data and determine a second decoding error level according to a decoding result;
the decoding module 302 is further configured to, if the second decoding error level is smaller than the first error level threshold, perform L1 decoding on the second compressed data after L2 decoding to obtain a physical signal in the second compressed data;
the decoding module 302 is further configured to obtain the physical signal in the first compressed data or the second compressed data according to a preset method if the second decoding error level is greater than or equal to the first error level threshold and less than the second error level threshold;
the decoding module 302 is further configured to perform L3 padding according to the past buffered data to obtain a physical signal corresponding to the second compressed data if the second decoding error level is greater than or equal to the second error level threshold.
Optionally, the receiving module 301 is further configured to directly receive the second compressed data sent by the second channel if the first compressed data fails to be received.
Optionally, the decoding module 302 is further configured to perform L1 decoding on the L2 decoded first compressed data to obtain a physical signal in the first compressed data if the first decoding error level is less than the first error level threshold.
Optionally, the decoding module 302 is further configured to, if the second compressed data fails to be received and the first decoding error level is greater than or equal to the first error level threshold and less than the second error level threshold, perform L1 decoding on the first compressed data after L2 decoding to obtain a physical signal in the first compressed data; if the second compressed data fails to be received and the first decoding error level is greater than or equal to the second error level threshold, performing L3 packet padding according to the past cache data to obtain a physical signal corresponding to the first compressed data.
Optionally, the decoding module 302 is further configured to determine whether the first decoding error level is greater than or equal to the first error level threshold and less than the second error level threshold, and whether the first decoding error level is greater than or equal to the second error level threshold; if the first decoding error level is greater than the second decoding error level, performing L1 decoding on the second compressed data after L2 decoding to obtain a physical signal in the second compressed data; if the first decoding error level is smaller than the second decoding error level, performing L1 decoding on the first compressed data after L2 decoding to obtain a physical signal in the first compressed data; and if the first decoding error level is equal to the second decoding error level, performing L1 decoding on the second compressed data or the first compressed data after L2 decoding to obtain a physical signal in the second compressed data or the first compressed data.
Optionally, the decoding module 302 is further configured to perform L1 decoding on the L2 decoded second compressed data to obtain a physical signal in the second compressed data if the first decoding error level is greater than or equal to the second error level threshold.
Optionally, the first compressed data and the second compressed data are the same compressed data sent by the sending end in different channels; the compressed data is divided into important data and secondary data according to the coding model; important data includes, but is not limited to: linear prediction coefficients and/or band energy coefficients; secondary data includes, but is not limited to: residual signals of linear prediction and/or frequency point data with smaller amplitude in transform coding; the first error level threshold and the second error level threshold are determined according to decoding quality of the important data and the secondary data after L2 decoding.
The embodiment of the present invention also provides a computer electronic device, fig. 4 shows a schematic diagram of the structure of an electronic device to which the embodiment of the present invention can be applied, and as shown in fig. 4, the computer electronic device includes a central processing module (CPU) 401 that can perform various appropriate actions and processes according to a program stored in a Read Only Memory (ROM) 402 or a program loaded from a storage section 408 into a Random Access Memory (RAM) 403. In the RAM 403, various programs and data required for the system operation are also stored. The CPU 401, ROM 402, and RAM 403 are connected to each other by a bus 404. An input/output (I/O) interface 405 is also connected to bus 404.
The following components are connected to the I/O interface 405: an input section 406 including a keyboard, a mouse, and the like; an output portion 407 including a Cathode Ray Tube (CRT), a Liquid Crystal Display (LCD), and the like, and a speaker, and the like; a storage section 408 including a hard disk or the like; and a communication section 409 including a network interface card such as a LAN card, a modem, or the like. The communication section 409 performs communication processing via a network such as the internet. The drive 410 is also connected to the I/O interface 405 as needed. A removable medium 411 such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, or the like is installed on the drive 410 as needed, so that a computer program read out therefrom is installed into the storage section 408 as needed.
The flowcharts and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present invention. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
The modules or modules involved in the embodiments of the present invention may be implemented in software or in hardware. The described modules or modules may also be provided in a processor, for example, as: a processor comprises a receiving module 301 and a decoding module 302, wherein the names of these modules do not in some way constitute a limitation of the module itself, e.g. the receiving module 301 may also be described as "receiving module 301 for receiving first compressed data transmitted by a first channel".
As another aspect, the present invention also provides a computer-readable storage medium, which may be a computer-readable storage medium contained in a wireless communication decoding apparatus as described in the above embodiment; or may be a computer-readable storage medium, alone, that is not incorporated into an electronic device. The computer-readable storage medium stores one or more programs for use by one or more processors to perform a wireless communication decoding method described in the present invention.
The above description is only illustrative of the preferred embodiments of the present invention and of the principles of the technology employed. It will be appreciated by persons skilled in the art that the scope of the invention referred to in the present invention is not limited to the specific combinations of the technical features described above, but also covers other technical features formed by any combination of the technical features described above or their equivalents without departing from the inventive concept. Such as the above-mentioned features and the technical features disclosed in the present invention (but not limited to) having similar functions are replaced with each other.
Claims (10)
1. A method of wireless communication decoding, the method comprising:
receiving first compressed data sent by a first channel;
if the first compressed data is successfully received, L2 decoding is carried out on the first compressed data, and a first decoding error level is determined according to a decoding result;
if the first decoding error level is greater than or equal to a first error level threshold, receiving second compressed data sent by a second channel;
if the second compressed data is successfully received, L2 decoding is carried out on the second compressed data, and a second decoding error level is determined according to a decoding result;
if the second decoding error level is smaller than the first error level threshold, performing L1 decoding on the second compressed data after L2 decoding to obtain a physical signal in the second compressed data;
if the second decoding error level is greater than or equal to the first error level threshold and less than the second error level threshold, acquiring a physical signal in the first compressed data or the second compressed data according to a preset method;
and if the second decoding error level is greater than or equal to a second error level threshold, performing L3 packet padding according to the past cache data to acquire a physical signal corresponding to the second compressed data.
2. The wireless communication decoding method according to claim 1, further comprising:
and if the first compressed data is failed to be received, directly receiving the second compressed data sent by the second channel.
3. The wireless communication decoding method according to claim 1, further comprising:
and if the first decoding error level is smaller than a first error level threshold, performing L1 decoding on the first compressed data after L2 decoding to obtain a physical signal in the first compressed data.
4. The wireless communication decoding method according to claim 1, further comprising:
if the second compressed data fails to be received and the first decoding error level is greater than or equal to the first error level threshold and smaller than the second error level threshold, performing L1 decoding on the first compressed data after L2 decoding to obtain a physical signal in the first compressed data;
and if the second compressed data fails to be received and the first decoding error level is greater than or equal to a second error level threshold, performing L3 packet padding according to the past cache data to acquire a physical signal corresponding to the first compressed data.
5. The wireless communication decoding method according to claim 1, wherein the acquiring the physical signal in the first compressed data or the second compressed data according to the preset method comprises:
if the first decoding error level is greater than or equal to the first error level threshold and smaller than a second error level threshold, judging the levels of the first decoding error level and the second decoding error level;
if the first decoding error level is greater than the second decoding error level, performing L1 decoding on the second compressed data after L2 decoding to obtain a physical signal in the second compressed data;
if the first decoding error level is smaller than the second decoding error level, performing L1 decoding on the first compressed data after L2 decoding to obtain a physical signal in the first compressed data;
and if the first decoding error level is equal to the second decoding error level, performing L1 decoding on the second compressed data or the first compressed data after L2 decoding to obtain a physical signal in the second compressed data or the first compressed data.
6. The method according to claim 5, wherein the acquiring the physical signal in the first compressed data or the second compressed data according to the preset method further comprises:
and if the first decoding error level is greater than or equal to a second error level threshold, performing L1 decoding on the second compressed data after L2 decoding to obtain a physical signal in the second compressed data.
7. The wireless communication decoding method according to claim 1, wherein the first compressed data and the second compressed data are the same compressed data transmitted by a transmitting end in different channels;
the compressed data is divided into important data and secondary data according to a coding model;
the important data includes, but is not limited to: linear prediction coefficients and/or band energy coefficients; the secondary data includes, but is not limited to: residual signals of linear prediction and/or frequency point data with smaller amplitude in transform coding;
the first error level threshold and the second error level threshold are determined according to decoding quality of the important data and the secondary data after L2 decoding.
8. A wireless communication decoding apparatus, the apparatus comprising:
the receiving module is used for receiving the first compressed data sent by the first channel;
the decoding module is used for carrying out L2 decoding on the first compressed data and determining a first decoding error level according to a decoding result if the first compressed data is successfully received;
the receiving module is further configured to receive second compressed data sent by a second channel if the first decoding error level is greater than or equal to a first error level threshold;
the decoding module is further configured to perform L2 decoding on the second compressed data and determine a second decoding error level according to a decoding result if the second compressed data is received successfully;
the decoding module is further configured to perform L1 decoding on the second compressed data after L2 decoding to obtain a physical signal in the second compressed data if the second decoding error level is less than the first error level threshold;
the decoding module is further configured to obtain a physical signal in the first compressed data or the second compressed data according to a preset method if the second decoding error level is greater than or equal to the first error level threshold and less than a second error level threshold;
and the decoding module is further configured to perform L3 packet padding according to the past buffered data to obtain a physical signal corresponding to the second compressed data if the second decoding error level is greater than or equal to a second error level threshold.
9. An electronic device comprising a memory and a processor, the memory having stored thereon a computer program, the processor implementing the method according to any of claims 1 to 7 when the computer program is executed.
10. A computer readable storage medium, characterized in that a computer program is stored, which computer program, when being executed by a processor, implements the method according to any of claims 1 to 7.
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