CN112838906B

CN112838906B - Data processing method and related device

Info

Publication number: CN112838906B
Application number: CN201911180039.5A
Authority: CN
Inventors: 熊杰; 唐欣
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2019-11-25
Filing date: 2019-11-25
Publication date: 2022-12-02
Anticipated expiration: 2039-11-25
Also published as: CN112838906A

Abstract

A method for processing data and a related device are provided, in which a sending end first receives a notification message from a receiving end, thereby detecting whether a judgment condition is satisfied. If the judgment condition is met, the transmitting end firstly encodes and then scrambles, the receiving end firstly descrambles and then decodes, and the soft combination of the log-likelihood ratio LLR can be realized when the receiving end decodes. If the judgment condition is not met, the transmitting end scrambles and then codes, the receiving end decodes and then descrambles, and at the moment, the transmitting end and the receiving end operate under the condition of being compatible with the old WLAN protocol. In the application, the sending end and the receiving end can be compatible with the WLAN protocol, and can also realize LLR soft combination according to a new mode, so that the decoding success rate is improved, and the transmission efficiency is improved.

Description

Data processing method and related device

Technical Field

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

Background

In a Wireless Local Area Network (WLAN) system, when a transmitting end transmits data, the data is scrambled at a physical layer, and then a Code Word (CW) is obtained by encoding. And finally, the transmitting end transmits the code word to the receiving end. The scrambling process is to add the data with the scrambling sequence, and the scrambling function is to randomize the data bits and avoid the occurrence of dc component. Accordingly, the receiving end may receive the codeword of the transmitting end. Then, the receiving end can decode and descramble the received code word, thereby obtaining the data of the transmitting end. When the receiving end fails to correctly receive the data, the transmitting end may retransmit the data. However, in retransmission, if the transmitting end adds data with a scrambling code sequence different from the previous one, the code word obtained after encoding is different from the previous code word. After the receiving end receives the retransmitted code word, the retransmitted code word is different from the last received code word. Therefore, the code words received by the receiving end in the re-receiving process are different, so that the receiving end cannot implement Log Likelihood Ratio (LLR) soft combining. The LLR soft combining technology is that when a receiving end receives a code word, LLR values received every time are accumulated according to the code word to obtain an LLR value with higher reliability, so that decoding is performed according to the LLR values, the decoding success rate is improved, and the transmission efficiency is improved.

Disclosure of Invention

The application provides a data processing method and a related device, which are used for realizing LLR soft combining and WLAN protocol compatibility according to a new mode.

In a first aspect, the present application provides a data processing method, including: a sending end receives a notification message from a receiving end; when a judgment condition is met, the sending end carries out scrambling processing after coding processing on data to be sent so as to obtain a first signal to be sent, wherein the judgment condition comprises that the notification message indicates that the receiving end supports a mode of descrambling and then decoding the received signal; after a first signal to be sent is obtained, the sending end sends the obtained first signal to be sent to the receiving end; when the judgment condition is not met, the sending terminal scrambles the data to be sent and then carries out coding processing to obtain a second signal to be sent; and after a second signal to be sent is obtained, the sending end sends the obtained second signal to be sent to the receiving end.

In the application, the sending end can receive the notification message from the receiving end, select a new mode to transmit the WLAN data or transmit the WLAN data in a manner of being compatible with the traditional WLAN protocol according to the judgment condition, can realize LLR soft combining in a manner of being compatible with the traditional WLAN protocol or in the manner of being compatible with the traditional WLAN protocol through the new mode, and improve the decoding success rate, thereby improving the transmission efficiency.

In some possible implementation manners, the sending end performs rate matching after performing the coding processing on the data to be sent, and then performs the scrambling processing to obtain the first signal to be sent.

In some possible implementation manners, the sending end sequentially performs the encoding processing, the rate matching, the scrambling processing, the stream parsing processing, the permuting operation and the modulation on the data to be sent to obtain the first signal to be sent.

In some possible implementation manners, the sending end performs the coding processing on the data to be sent, then performs rate matching, stream parsing processing and permuting operation, and then performs the scrambling processing to obtain the first signal to be sent.

In some possible implementation manners, the sending end sequentially performs the encoding processing, the rate matching, the stream parsing processing, the permuting operation, the scrambling processing, and the modulating on the data to be sent, so as to obtain the first signal to be sent.

In a second aspect, the present application provides a data processing method, including: a receiving end receives a notification message from a sending end; when a judgment condition is met, the receiving end carries out descrambling processing and then carries out decoding processing on the received signal, wherein the judgment condition comprises that the notification message instructs the sending end to adopt a mode of encoding the data to be sent first and then scrambling; and when the judgment condition is not met, the receiving end carries out descrambling after carrying out decoding processing on the received signal.

In some possible implementation manners, the receiving end sequentially demodulates, de-permutes, de-streams, analyzes, descrambles, de-rate matches, and decodes the received signal to obtain the target data.

In some possible implementation manners, the receiving end sequentially performs demodulation, descrambling, deprogramming, deplowring analysis, de-rate matching, and decoding on the received signal to obtain target data.

In a third aspect, the present application provides a transmitting end, including:

a receiving unit, configured to receive a notification message from a receiving end; the first processing unit is used for carrying out scrambling processing after coding processing is carried out on data to be transmitted when a judgment condition is met to obtain a first signal to be transmitted, wherein the judgment condition comprises that the notification message is a first notification message; the second processing unit of the data to be sent is used for carrying out scrambling processing on the data to be sent and then carrying out coding processing on the data to be sent to obtain a second signal to be sent when the judgment condition is not met; a sending unit, configured to send the obtained first signal to be sent or the obtained second signal to be sent to the receiving end.

In some possible implementations, the first processing unit is further configured to: and when the judgment condition is met, sequentially carrying out the coding processing, the rate matching, the scrambling processing, the stream analysis processing, the sequence changing operation and the modulation on the data to be transmitted to obtain the first signal to be transmitted.

In some possible implementations, the first processing unit is further configured to: and when the judgment condition is met, sequentially carrying out the coding processing, the rate matching, the stream analysis processing, the sequence changing operation, the scrambling processing and the modulation on the data to be transmitted to obtain the first signal to be transmitted.

In a fourth aspect, the present application provides a receiving end, including: a receiving unit, configured to receive a notification message from a sending end; a first processing unit, configured to perform descrambling processing and then perform decoding processing on a received signal when a determination condition is met, where the determination condition includes that the notification message is a third notification message; and the second processing unit is used for carrying out descrambling processing after carrying out decoding processing on the received signal when the judgment condition is not met.

In some possible implementations, the first processing unit is specifically configured to: and when the judgment condition is met, sequentially demodulating, de-permuting, de-streaming analysis processing, descrambling processing, de-rate matching and decoding processing the received signal to obtain target data.

In some possible implementations, the first processing unit is specifically configured to: and when the judgment condition is met, sequentially demodulating, descrambling, de-permuting, de-streaming analysis, de-rate matching and decoding the received signal to obtain target data.

In a fifth aspect, the present application provides a wireless local area network WLAN device, including an antenna and a chip, wherein: the antenna is used for receiving radio waves; the chip is configured to process signals carried in radio waves according to the method of data processing of the first or second aspect.

In a sixth aspect, the present application provides a chip, comprising: the device comprises a first scrambling module, an encoding module, a second scrambling module, a modulation module and a controller; the first scrambling module is connected with the coding module; the second scrambling module is connected between the coding module and the modulation module; the controller is connected with the first scrambling module and is used for controlling a scrambling initial value of the first scrambling module according to an indication corresponding to data to be sent; the controller is connected with the second scrambling module and is used for controlling the scrambling initial value of the second scrambling module according to the indication corresponding to the data to be sent.

In one possible implementation, the chip further includes: the system comprises a rate matching module, a stream parser module and an order changing operation module; the first scrambling module, the encoding module, the rate matching module, the second scrambling module, the stream parser module, the sequence changing operation module and the modulation module are connected in sequence.

In one possible implementation, the chip further includes: the system comprises a rate matching module, a stream parser module and an order changing operation module; the first scrambling module, the encoding module, the rate matching module, the stream parser module, the sequence changing operation module, the second scrambling module and the modulation module are connected in sequence.

In a seventh aspect, the present application provides a chip, where the chip includes a first descrambling module, a decoding module, a second descrambling module, a demodulation module, and a controller; the first descrambling module is connected with the decoding module; the second descrambling module is connected between the decoding module and the demodulation module; the controller is connected with the first descrambling module and used for controlling a descrambling initial value of the first descrambling module according to an instruction in a signal received by the chip; the controller is connected with the second descrambling module and is used for controlling a descrambling initial value of the second descrambling module according to the indication in the signal received by the chip.

In a possible implementation manner, the chip further includes a de-rate matching module, a de-streaming parser module and a de-sequencing operation module; the first descrambling module, the decoding module, the de-rate matching module, the second descrambling module, the de-streaming parser module, the de-permuting operation module and the demodulation module are connected in sequence.

In a possible implementation manner, the chip further includes a de-rate matching module, a de-streaming parser module and a de-sequencing operation module; the first descrambling module, the decoding module, the de-rate matching module, the de-streaming parser module, the de-sequencing operation module, the second descrambling module and the demodulation module are connected in sequence.

In an eighth aspect, the present application provides a computer-readable storage medium comprising instructions which, when executed on a computer, cause the computer to perform the method of the first or second aspect as described above.

Drawings

Fig. 1 is an exemplary diagram illustrating a transmitting end and a receiving end communicating according to a WLAN protocol in the present application;

fig. 2 is an exemplary diagram illustrating that a transmitting end transmits data to be transmitted to a receiving end twice in the present application;

fig. 3 is an exemplary diagram illustrating a transmitting end transmitting data to be transmitted to a receiving end in the present application;

fig. 4 is an exemplary diagram illustrating data transmission between a transmitting end and a receiving end according to a WLAN protocol in the present application;

fig. 5 is an exemplary diagram illustrating data transmission between a transmitting end and a receiving end according to a new mode in the present application;

FIG. 6 is an exemplary diagram of a sequence generation circuit in the present application;

FIG. 7 is a flow chart illustrating a method of data processing provided herein;

FIG. 8 is a schematic flow chart of another data processing method provided herein;

fig. 9 is another exemplary diagram of data transmission between a transmitting end and a receiving end in the present application;

fig. 10 is a diagram illustrating another example of data transmission between a transmitting end and a receiving end according to a WLAN protocol in the present application;

fig. 11 is another exemplary diagram illustrating that a transmitting end and a receiving end transmit data according to a new mode in the present application;

fig. 12 is a schematic structural diagram of a WLAN device provided in the present application;

fig. 13 is an internal schematic diagram of a chip in the wlan device provided in the present application;

fig. 14 is an exemplary diagram of a transmitting end provided in the present application;

fig. 15 is an exemplary diagram of a receiving end according to the present application.

Detailed Description

The embodiment of the application provides a data processing method and a related device, which are used for realizing LLR soft combining and WLAN protocol compatibility according to a new mode.

The terms "first," "second," "third," "fourth," and the like in the description and in the claims of the present application and in the drawings described above, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein. Moreover, the terms "comprises," "comprising," and "corresponding" and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements explicitly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

In the embodiments of the present application, words such as "exemplary" or "for example" are used to mean serving as an example, instance, or illustration. Any embodiment or design described herein as "exemplary" or "e.g.," is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present concepts related in a concrete fashion.

For clarity and conciseness of the following descriptions of the various embodiments, a brief introduction to the related art is first given:

current WLAN communications are generally in accordance with WLAN protocols established by the Institute of Electrical and Electronics Engineers (IEEE), such as the IEEE 802.11 protocol. When the WLAN protocol specifies that a sending end sends data to be sent to a receiving end, the sending end can perform scrambling, encoding, modulating and other processing on the data, and then send a code word obtained after the processing to the receiving end, and after the receiving end receives the code word, the receiving end performs demodulation, decoding, descrambling and other processing on the code word, so as to obtain the data to be sent. As shown in fig. 1, fig. 1 is an exemplary diagram illustrating a transmitting end and a receiving end communicating according to a WLAN protocol in this embodiment. The sending end may be a base station, a router, a wireless communication node, and other devices, and the receiving end may be a mobile phone, a tablet, and other terminals, which are not limited in this application.

In fig. 1, the scrambling module 101, the pre-filling module 102, the encoding module 103, the rate matching module 104, the stream parser module 105, the permuting operation module 106, and the modulating module 107 are functional modules at a transmitting end, and the descrambling module 201, the combining module 202, the decoding module 203, the de-rate matching module 204, the de-streaming parser module 205, the de-permuting operation module 206, the demodulating module 207, the equalizer 208, and the channel estimation module 209 are functional modules at a receiving end. The respective modules are described in detail below.

The scrambling module 101 may be configured to perform scrambling (scrambling) processing on data to be sent, which is to be sent by a sending end, where the scrambling is a processing method of a digital signal, and may be addition, multiplication, or xor operation of a scrambling sequence and the data to be sent, so as to obtain a scrambling code word.

The pre-filling module 102 may be configured to pre-fill (pre-padding) the scrambling code word when the length of the scrambling code word is not sufficient, so that the scrambling code word reaches a specified length. The specific length value may be determined according to the WLAN protocol. The embodiment of the present application does not limit the specific filling manner.

The encoding module 103 may be configured to perform an encoding (encode) process to obtain a Code Word (CW). Illustratively, the encoding module 103 may perform low-density parity-check (LDPC) encoding.

The rate matching module 104 may be configured to puncture or repeat the encoded codeword to match to the specified length to obtain a matched codeword. Illustratively, the code word is only 8 bytes, and the length specified by the WLAN protocol is 16 bytes, the rate matching module 104 may repeat the code word to obtain a 16-byte matching code word. The embodiment of the present application does not limit a specific implementation manner of rate matching (rate matching).

The stream parser (stream parser) module 105 may be configured to allocate the matched code words obtained by the rate matching module 104 to multiple data streams, so as to obtain stream parsed code words. A data stream (data stream) may refer to an ordered set of data sequences of bytes having a start and an end. The specific implementation method of the flow resolver module in the embodiment of the present application is not limited.

The permuting operation module 106 may be configured to perform a tone mapping operation (tone mapping) on the stream parsing codeword obtained by the stream parser module 105 to obtain a permuted codeword. The permuting operation is a frequency domain symbol interleaving mechanism. The embodiment of the present application does not limit a specific implementation manner of the sequence changing operation.

The modulation module 107 may be configured to perform modulation processing on the permuted codewords to obtain modulated codewords. The embodiment of the present application does not limit the specific implementation manner of the modulation processing.

The transmitting end may transmit the modulated codeword to the receiving end over a channel 108. A channel (channel) may also be referred to as a wireless channel, and is a data signal transmission channel in which a wireless signal is used as a transmission medium. In the WLAN protocol, a sending end may select an appropriate channel to communicate with a receiving end, and the method for selecting a channel by the sending end is not specifically limited in this embodiment.

The channel estimation module 209 at the receiving end may be used for channel estimation (channel estimation), and the channel estimation algorithm is not specifically limited in the embodiment of the present application.

An equalizer (equalizer) module 208 may be used to equalize the modulation codewords received by the receiving end. Equalization processing in communication refers to equalization of channel characteristics, that is, an equalizer at a receiving end generates characteristics opposite to those of a channel, and is used for canceling intersymbol interference caused by time-varying multipath propagation characteristics of the channel. In some embodiments, the receiving end may set an equalizer module based on Minimum Mean Square Error (MMSE) criteria. In practical application, the receiving end may further set an equalizer module based on Zero Forcing (ZF) algorithm, or an equalizer module based on Maximum Likelihood Sequence Estimation (MLSE) algorithm, and the embodiment of the present application does not specifically limit what kind of equalizer is used.

The demodulation (de-modulation) module 207 may be configured to demodulate the modulation codeword to obtain a demodulation codeword. The demodulation process is an inverse operation of the foregoing modulation process, and the implementation manner of the demodulation process is not particularly limited in the embodiment of the present application.

The de-ordering operation module 206 may be configured to perform de-ordering operation (de-tone mapping) on the demodulated codeword to obtain a de-ordered codeword. The order reversing operation is the inverse operation of the order reversing operation, and the specific implementation manner of the order reversing operation is not limited in the embodiment of the present application.

The de-stream parser module 205 may be configured to perform de-stream parsing (de-stream parser) on the de-permuted codeword to obtain a de-stream parsed codeword. The solution stream parsing processing is the inverse operation of the stream parsing processing, and the embodiment of the present application does not limit the specific implementation manner of the solution stream parsing processing.

The de-rate matching module 204 may be configured to perform de-rate matching (de-rate matching) on the de-streaming parsing codeword to obtain a de-matched codeword. The de-rate matching process is the inverse operation of the rate matching process, and the specific implementation manner of the de-rate matching process is not limited in the embodiment of the present application.

The decoding module 203 may be configured to perform decoding (decode) on the dematching code word to obtain a decoding code word. The decoding process is the inverse operation of the encoding process, and the embodiment of the present application does not limit the specific implementation manner of the decoding process. In some embodiments, the decoding module 203 may perform low density parity check decoding.

The combining module 202 may be configured to perform a combining (combining) process on the decoded codeword to obtain a combined codeword. The merge process is the inverse operation of the pre-fill process. For example, if the 16-byte decoded codeword includes two repeated codewords, the receiving end may combine the repeated codewords in the decoded codeword through the combining module 202 to obtain an 8-byte combined codeword. In practical applications, the receiving end may also perform merging processing in other manners according to the merging module 202, which is not specifically limited in this embodiment of the present application.

The descrambling module 201 may be configured to perform descrambling (de-scrambling) on the merged codeword to obtain the target data. The target data may be the same as the data to be transmitted at the transmitting end. For example, the transmitting end processes data to be transmitted, namely 'ABC', and then transmits the processed data to the receiving end, and the receiving end processes the received signal to obtain target data, namely 'ABC'. The descrambling process is the inverse operation of the scrambling process. The embodiment of the present application does not limit the specific implementation manner of the descrambling processing.

As can be known from the introduction of the functional modules, when the transmitting end transmits data to be transmitted, the data may be processed by the scrambling module 101, the pre-filling module 102, the encoding module 103, the rate matching module 104, the stream parser module 105, the permuting operation module 106, and the modulating module 107, and the code words are transmitted to the receiving end through the channel 108. After receiving the codeword, the receiving end may process the codeword through the channel estimation module 209, the equalizer 208, the demodulation module 207, the de-permute operation module 206, the de-stream parser module 205, the de-rate matching module 204, the decoding module 203, the merging module 202, and the descrambling module 201 to obtain target data. When the sending end does not receive the acknowledgement signal fed back by the receiving end after a period of time, the sending end can consider that the receiving end fails to correctly receive the data to be sent. When the sending end considers that the receiving end cannot correctly receive the data to be sent, the processing similar to the above can be carried out on the data to be sent again, so that the data to be sent is re-processed and then is re-sent to the receiving end. As shown in fig. 2, fig. 2 is an exemplary diagram of a transmitting end sending data to be sent to a receiving end twice. In fig. 2, a first procedure is that a transmitting end transmits data to a receiving end for a first time, and a second procedure is that the transmitting end transmits the same data to the receiving end for a second time, where the pre-filling module 102, the encoding module 103, the rate matching module 104, the stream parser module 105, the permuting operation module 106, the modulating module 107, the channel 108, the channel estimation module 209, the equalizer 208, the demodulating module 207, the de-permuting operation module 206, the de-stream parser module 205, the de-rate matching module 204, the decoding module 203, and the combining module 202 are the same as those described in fig. 1, and are not described herein again.

The scrambling module 101 is used by the sending end in the process of processing data to be sent twice. However, since the WLAN protocol does not enforce that the scrambling sequence in the scrambling module used to process data to be transmitted each time is the same, in this example, the scrambling sequence used by the scrambling module 101 in the first process may be different from the scrambling sequence used by the scrambling module 101 in the second process. When the scrambling code sequence adopted by the scrambling module 101 in the first process is different from the scrambling code sequence adopted by the scrambling module 101 in the second process, the scrambling code word obtained by the scrambling module 101 in the first process is different from the scrambling code word obtained by the scrambling module 101 in the second process, so that the coding code words obtained by processing through the coding module 103 twice are different. As in the example of fig. 2, if the code word obtained by the coding module 103 in the first process is CW1, and the code word obtained by the coding module 103 in the second process is CW2, CW1 ≠ CW2. The receiving end receives the code words and then processes the code words, and the code words CW1 and CW2 obtained by the processing of the rate de-matching module 204 twice are different, so that the receiving end cannot perform LLR soft combining according to the code words CW1 and CW2.

The LLR soft combining technique is that when a receiving end receives a codeword, LLR values received each time are accumulated according to the codeword to obtain an LLR value with higher reliability, and decoding is performed according to the LLR value. The requirement of the LLR soft combining technique is that the codeword received each time is theoretically the same (which may actually be different due to signal interference). If the codewords CW1 and CW2 obtained in the two processes are different theoretically, LLR soft combining cannot be performed.

In order to solve the technical problem that LLR soft combining cannot be achieved, embodiments of the present application provide a transmitting end and a receiving end. Fig. 3 is an exemplary diagram illustrating a transmitting end transmitting data to be transmitted to a receiving end in this embodiment. The first scrambling module 301, the pre-filling module 302, the encoding module 303, the rate matching module 304, the stream parser module 305, the permuting operation module 306, the second scrambling module 307, and the modulation module 308 may be functional modules of a transmitting end, and the second descrambling module 401, the combining module 402, the decoding module 403, the de-rate matching module 404, the de-streaming parser module 405, the de-permuting operation module 406, the first descrambling module 407, the demodulation module 408, the equalizer 409, and the channel estimation module 410 may be functional modules of a receiving end.

In some embodiments, the pre-filling module 302, the encoding module 303, the rate matching module 304, the stream parser module 305, the permute operation module 306, and the modulation module 308 may be similar to the pre-filling module 102, the encoding module 103, the rate matching module 104, the stream parser module 105, the permute operation module 106, and the modulation module 107 shown in fig. 1, respectively, and are not described herein again. The scrambling principle of the first scrambling module 301 and the second scrambling module 307 may be similar to the scrambling module 101 shown in fig. 1. In some embodiments, the combining module 402, the decoding module 403, the de-rate matching module 404, the de-streaming parser module 405, the de-permuting operation module 406, the demodulation module 408, the equalizer 409, and the channel estimation module 410 may be similar to the combining module 202, the decoding module 203, the de-rate matching module 204, the de-streaming parser module 205, the de-permuting operation module 206, the demodulation module 207, the equalizer 208, and the channel estimation module 209 shown in fig. 1, and are not described herein again. The descrambling principle of the second descrambling module 401, the first descrambling module 407 may be similar to the descrambling module 201 shown in fig. 1.

In some embodiments, the sender may set the first scrambling module 301 to be active and the second scrambling module 307 to be inactive. The receiving end may set the first descrambling module 407 to be deactivated and the second descrambling module 401 to be in effect. At this time, the transmitting end and the receiving end may transmit data in the old mode, that is, according to the WLAN protocol, as shown in fig. 4. Fig. 4 is an exemplary diagram illustrating data transmission between a sending end and a receiving end according to a WLAN protocol in this embodiment of the application. In fig. 4, symbols "x" are respectively located below the second scrambling module 307 and the first descrambling module 407, which indicate that both the second scrambling module 307 and the first descrambling module 407 are disabled. The process of sending data to be sent from the sending end to the receiving end is similar to the description corresponding to fig. 1, and is not described herein again. In the embodiment of the present application, the first scrambling module 301 is enabled, that is, the first scrambling module 301 can perform scrambling processing on the signal normally, and the second scrambling module 307 is disabled, that is, the second scrambling module 307 transmits the signal as a wire and does not perform other processing. The definitions of the other modules in effect and failure are similar to those of the first scrambling module 301 in effect and the second scrambling module 307 in failure, and the description of the embodiment of the present application will not be repeated.

In some embodiments, the sender may set the first scrambling module 301 to be disabled and the second scrambling module 307 to be enabled. The receiving end may set the first descrambling module 407 to be active and the second descrambling module 401 to be inactive. At this time, the transmitting end and the receiving end may transmit data according to the new mode, and may implement LLR soft combining during data transmission, as shown in fig. 5. Fig. 7 is an exemplary diagram of data transmission by a transmitting end and a receiving end according to a new mode in the embodiment of the present application. In fig. 5, symbols "x" are respectively located below the first scrambling module 301 and the second descrambling module 401, which indicate that both the first scrambling module 301 and the second descrambling module 401 are disabled. In the process of sending the data to be sent to the receiving end by the sending end, in the process of processing the data to be sent twice by the sending end, the encoded code word obtained by processing by the encoding module 303 is not processed by the first scrambling module 301 (the first scrambling module 301 is failed), so that the encoded code word is not affected by the first scrambling module 301. Therefore, the code words obtained by the two processing at the transmitting end are the same, and CW1= CW2. Correspondingly, after the receiving end performs corresponding inverse operation processing, the obtained code words are also the same, and the LLR soft combining requirement is met, so that the LLR soft combining can be performed.

In some embodiments, the transmitting end may set all scrambling initial values in the first scrambling module 301 to 0 by the controller to disable the first scrambling module 301. The controller may be a microprocessor, an Application Specific Integrated Circuit (ASIC), or the like, and controls the first scrambling module 301 by reading and writing parameters in the first scrambling module 301.

Illustratively, the first scrambling module 301 is a scrambler based sequence generation circuit that can generate a scrambled sequence. The sending end may perform xor operation on the input code word and the scrambling code sequence through the first scrambling module 301 to obtain a scrambling code word. Fig. 6 is an exemplary diagram of a sequence generation circuit in the embodiment of the present application. In FIG. 6, r ₀ 、r ₁ 、…r ₁₄ For scrambling the initial value, MSB is the most significant bit, LSB is the least significant bit, S is the scrambling sequence, the generator polynomial may be S (x) = x ¹⁵ +x ¹¹ +1, in practical applications, the generator polynomial may be in other cases, and the generator polynomial is not specifically limited in this embodiment. When sendingWhen all the scrambling initial values are set to 0, the scrambling sequence output by the sequence generation circuit is [000 … 000%]If the code word and the scrambling code sequence are subjected to the xor operation by the sending end, since all code elements in the scrambling code sequence are 0, the scrambling code word obtained by the sending end is the same as the code word before the xor operation, and the first scrambling module 301 may be considered to be invalid. In practical applications, the sequence generating circuit may be an m-sequence generator or an n-stage linear feedback shift register, which is not limited in this embodiment of the present application. In this example, the transmitting end may implement control of the first scrambling module 301 by the controller overwriting a scrambling initial value in the sequence generating circuit.

In practical application, the sender may use other methods to disable the first scrambling module 301, and the method for disabling the first scrambling module 301 by the sender is not specifically limited in this embodiment of the application.

In this embodiment, the method for disabling the second scrambling module 307 by the transmitting end, and disabling the first descrambling module 407 and the second descrambling module 401 by the receiving end are similar to the method for disabling the first scrambling module 301 by the transmitting end, and are not described herein again.

In some embodiments, the transmitting end and the receiving end may negotiate in advance to determine whether to perform the data transmission scheme of fig. 4 or perform the data transmission scheme of fig. 5. For example, the sender may send a request message to the receiver, so that the receiver feeds back a notification message to the sender according to the request message, and the sender thus determines to set the first scrambling module 301 to be disabled or set the second scrambling module 307 to be disabled according to the fed-back notification message. Hereinafter, the detailed description will be made by way of examples.

Fig. 7 is a schematic flowchart of a data processing method provided in an embodiment of the present application, where the flowchart includes:

901. a sending end receives a notification message from a receiving end;

in the embodiment of the present application, the modules included in the transmitting end may include a first scrambling module 301, a second scrambling module 307, and an encoding module 303 as in fig. 3. Further, the transmitting end may further include a pre-filling module 302, a rate matching module 304, a stream parser module 305, an out-of-order operation module 306, and a modulation module 308 as in fig. 3. The modules included at the receiving end may include a second descrambling module 401, a first descrambling module 407 and a decoding module 403. Further, the receiving end may further include a combining module 402, a de-rate matching module 404, a de-streaming parser module 405, a de-permuting operation module 406, a demodulation module 408, an equalizer 409, and a channel estimation module 410. The function of the above modules is similar to that described in the embodiment corresponding to fig. 3, and is not described again here. In this embodiment, the sending end may first send a request message to the receiving end, so that the receiving end may feed back a notification message to the sending end. In other embodiments, the receiving end may also actively send a notification message to the sending end without waiting for the request message of the sending end. The embodiment of the present application does not limit this.

In some embodiments, the sender may perform data transmission according to a default data transmission mode when not receiving the notification message from the receiver. For example, the transmitting end may perform the data transmission method of fig. 4 or perform the data transmission method of fig. 5 before receiving the notification message from the receiving end.

In some embodiments, the sender and receiver may pre-set a specific code to represent the request message, e.g., 0101. When the receiving end receives the specific code 0101, a notification message is transmitted to the transmitting end in response to the specific code 0101.

The notification message may include a first notification message, a second notification message, or another notification message, which is not limited in this embodiment of the present application. Wherein the first notification message may be used to indicate that the receiving end is capable of processing the signal in the new mode, and the second notification message may be used to indicate that the receiving end is capable of processing the signal in the old mode. The new mode refers to a mode in which soft LLR combining can be implemented in the foregoing embodiment (a transmitting end performs scrambling after encoding when transmitting data to be transmitted, and a receiving end performs descrambling before decoding on a received signal), and the old mode refers to a mode in which the WLAN protocol is compatible in the foregoing embodiment (a transmitting end performs scrambling before encoding when transmitting data to be transmitted, and a receiving end performs decoding before descrambling on a received signal), which is not described herein again.

In some embodiments, the transmitting end and the receiving end may preset a code 0 to represent the first notification message and a code 1 to represent the second notification message. When the sending end receives the code 0 from the receiving end, the sending end receives the first notification message, and when the sending end receives the code 1 from the receiving end, the sending end receives the second notification message. In some embodiments, the first notification message indicates a data transmission mode in which the sending end and the receiving end perform soft LLR combining according to the new mode, and the second notification message indicates a data transmission mode in which the sending end and the receiving end perform data transmission according to the WLAN protocol.

In practical application, the sending end and the receiving end may also represent the request message and the notification message by other codes, which is not specifically limited in this embodiment of the present application.

In some embodiments, after receiving the notification message of the receiving end, the sending end may generate a corresponding relationship between the receiving end and its support mode. For example, the sending end may generate a configuration table of the receiving end and its supported mode, where the configuration table describes a corresponding relationship between the receiving end and its supported mode. For example, table 1 is an example of the configuration table, and it can be seen that the sending end may allocate a User Identification (UID) to each receiving end, and determine a corresponding mode for each receiving end, where in the example, 1 indicates that the receiving end supports the new mode, and 0 indicates that the receiving end supports the old mode.

TABLE 1

UID	Supported mode code
		33	1
44	0
		55	1

In practical application, the sending end may also construct a corresponding relationship between the receiving end and the support mode thereof, such as a database, by other means, which is not limited in this embodiment of the present application.

When the sending end sends data to be sent to the receiving end, the sending end can determine in what way to send the data to be sent according to a configuration table similar to table 1.

902. When the judgment condition is met, the transmitting end carries out scrambling processing after coding processing on data to be transmitted so as to obtain a first signal to be transmitted;

in this embodiment, the determining condition may include that the notification message received by the sending end is a first notification message. In practical applications, the determining condition may further include other conditions, for example, whether other receiving ends communicating with the sending end all transmit data in a new mode, or whether the load of the sending end is low, and the like. In some embodiments, the sending end may determine that the determination condition is satisfied after detecting that all the conditions in the determination condition are satisfied.

In this embodiment of the application, after the sending end determines that the determination condition is satisfied, the coding module 303 may perform coding processing on data to be sent, and then the second scrambling module 307 may perform scrambling processing on a coded codeword obtained through the coding processing. In some embodiments, the sending end employs the modules shown in fig. 5, and after the sending end determines that the judgment condition is met, the sending end may set all the scrambling initial values of the first scrambling module 301 to zero through the processor, so that the first scrambling module 301 is disabled, and "the sending end performs scrambling processing after performing encoding processing on data to be sent, so as to obtain a scrambling code word". It is understood that the second scrambling module 307 may perform scrambling processing according to a preset scrambling initial value, which is not specifically limited in this embodiment of the application. For example, as shown in fig. 5, the first scrambling module 301 is disabled, the second scrambling module 307 is enabled, and the sending end may process the data to be sent through the encoding module 303 and then perform scrambling processing through the second scrambling module 307 to obtain a scrambled codeword.

In some embodiments, the sender may also perform pre-filling processing on the data to be sent by the pre-filling module 302 before performing encoding processing on the data to be sent. In some embodiments, after the sender performs the encoding process on the data to be sent, and before performing the scrambling process, the sender may further perform a rate matching process on the encoded code word obtained by the encoding process through the rate matching module 304.

In some embodiments, the transmitting end may transmit configuration tables similar to table 1 to various functional modules, such as the first scrambling module 301 and the second scrambling module 307. When the judgment condition is met, the sending end can write the UID of the receiving end corresponding to the data to be sent in the leading part corresponding to the data to be sent. Then, when each functional module receives the data to be sent, the controller of the functional module determines the transmission mode of the data to be sent according to the UID and the configuration table, so as to perform corresponding processing. For example, when the controller of the first scrambling module 301 determines that the transmission mode of a certain data to be transmitted is a new mode, the controller of the first scrambling module 301 may control the first scrambling module 301 to be disabled. For another example, when the controller of the second scrambling module 307 determines that the transmission mode of a certain data to be transmitted is a new mode, the controller of the second scrambling module 307 may control the second scrambling module 307 to be effective.

In other embodiments, when the determination condition is satisfied, the sending end may write a specific code or a specific pattern in the preamble portion corresponding to the data to be sent, so as to indicate whether the data to be sent is transmitted in a new mode. Illustratively, a specific code 1 indicates that the data to be transmitted is transmitted in a new mode, and a specific code 0 indicates that the data to be transmitted is transmitted in an old mode. When each functional module receives the data to be transmitted, the controller of the functional module determines whether the data to be transmitted is transmitted in a new mode according to the specific code, so as to perform corresponding processing, which is similar to the processing of the first scrambling module 301 and the second scrambling module 307, and is not described herein again.

903. A sending end sends a first signal to be sent to a receiving end;

in some embodiments, the transmitting end may further process the scrambled codewords through the stream parser module 305, the permute operation module 306, and the modulation module 308, and then transmit the processed scrambled codewords to the receiving end. The processed scrambling code word may also be referred to as the first signal to be transmitted. In this embodiment, the first signal to be sent may be a signal to be sent obtained by processing, by the sending end, data to be sent in a new mode. The sending end processes the data to be sent through the new mode, which may mean that the sending end performs scrambling processing after encoding processing on the data to be sent. In practical application, the transmitting end may further perform other processing before or after or between the encoding processing and the scrambling processing, and finally obtain the first signal to be transmitted.

In some embodiments, before the sending end sends the first to-be-sent signal to the receiving end, the sending end may send a notification message to the receiving end. In some embodiments, the notification message may include a third notification message, which may indicate that the sender is ready to transmit data in the new mode, a fourth notification message, which may indicate that the sender is ready to transmit data in the old mode, and other messages. The data type and code of the notification message may be similar to those of the notification message in step 901, and are not described herein again. After receiving the notification message, the receiving end may process data in a new mode or process data in an old mode according to the notification message.

In this embodiment, after receiving the first signal to be transmitted, the receiving end may perform descrambling on the first signal to be transmitted through the first descrambling module 407, and then perform decoding through the decoding module 403. In some embodiments, the receiving end employs the modules shown in fig. 5, and the receiving end may set all descrambling initial values of the second descrambling module 401 to zero through the processor, so that the second descrambling module 401 is disabled, thereby implementing "the receiving end performs descrambling processing on a scrambled codeword before performing decoding processing". It can be understood that the first descrambling module 407 may perform descrambling processing according to a preset descrambling initial value, which is not specifically limited in this embodiment of the application. For example, as shown in fig. 5, the second descrambling module 401 is disabled, the first descrambling module 407 is enabled, and after the receiving end descrambles the scrambled code word through the first descrambling module 407, the decoding module 403 decodes the descrambled code word obtained through descrambling to obtain the target data.

904. When the judgment condition is not met, the sending end carries out scrambling processing on data to be sent and then carries out coding processing to obtain a second signal to be sent;

in this embodiment, when the notification message received by the sender is not the first notification message, for example, is the second notification message, the sender may determine that the determination condition is not satisfied. The determination condition may be similar to the determination condition in step 902, and is not described herein again. In some embodiments, when the sender does not receive the notification message from the receiver, the sender may also determine that the determination condition is not satisfied.

In this embodiment of the application, after determining that the determination condition is not satisfied, the transmitter may perform scrambling processing on data to be transmitted through the first scrambling module 301, and then perform encoding processing on a scrambled codeword obtained through the scrambling processing through the encoding module 303. In some embodiments, the sending end employs the modules shown in fig. 4, and the sending end may disable the second scrambling module 307 by setting all the scrambling initial values of the second scrambling module 307 to zero, so as to implement "the sending end performs coding processing on the data to be sent after performing scrambling processing on the data to be sent, so as to obtain the coded code word". It is understood that the first scrambling module 301 may perform scrambling processing according to a preset scrambling initial value, which is not specifically limited in this embodiment of the application. For example, as shown in fig. 4, the first scrambling module 301 is in effect, the second scrambling module 307 is disabled, and after the sending end performs scrambling processing on data to be sent through the first scrambling module 301, the coding module 303 performs coding processing on scrambling code words obtained through the scrambling processing to obtain coding code words.

In some embodiments, after scrambling the data to be transmitted, the sender may pre-fill the scrambled codeword by the pre-fill module 302 before encoding the scrambled codeword.

905. And the sending end sends a second signal to be sent to the receiving end.

In some embodiments, the transmitting end may further process the encoded codeword through the rate matching module 304, the stream parser module 305, the permuting operation module 306, and the modulation module 308, and then transmit the processed encoded codeword to the receiving end. The processed code word may also be referred to as a second signal to be transmitted. In this embodiment, the second signal to be transmitted may be a signal to be transmitted obtained by processing, by the sending end, data to be transmitted in the old mode. The sending end processes the data to be sent through the old mode, which means that the sending end performs coding processing on the data to be sent after scrambling processing. In practical applications, the sending end may perform other processing before or after the scrambling processing and the encoding processing, and this is not limited in this embodiment of the application.

In some embodiments, before the sending end sends the encoded codeword to the receiving end, the sending end may send a notification message to the receiving end. The notification message may be similar to the notification message in step 903, and is not described herein again.

In this embodiment, after receiving the encoded code word, the receiving end may decode the encoded code word through the decoding module 403, and then perform descrambling through the second descrambling module 401. In some embodiments, the receiving end employs the modules shown in fig. 4, and the receiving end may disable the first descrambling module 407 by setting all descrambling initial values of the first descrambling module 407 to zero, so as to implement "the receiving end performs decoding processing on the encoded code word before performing descrambling processing". It is understood that the second descrambling module 401 may perform descrambling processing according to a preset descrambling initial value, which is not specifically limited in this embodiment of the application. For example, as shown in fig. 4, the second descrambling module 401 is in effect, the first descrambling module 407 is disabled, and after the receiving end can decode the encoded code word through the decoding module 403, the second descrambling module 401 descrambles the decoded code word obtained through decoding, so as to obtain the target data.

Fig. 8 is a schematic flow chart of another data processing method according to an embodiment of the present application, where the flow chart includes:

1001. the receiving end receives a notification message from the sending end;

in some embodiments, the hardware structures of the receiving end and the transmitting end may be similar to the embodiment corresponding to fig. 3, and details of this embodiment are not repeated herein.

In this embodiment, the notification message from the sending end may include a third notification message, a fourth notification message, and the like, which are similar to the notification message in step 903 in the foregoing embodiment and are not described herein again.

In some embodiments, the receiving end may process the received signal in a default data transmission manner when it does not receive the notification message from the transmitting end. For example, the receiving end may process the received signal in a data transmission manner as in fig. 4 or in a data transmission manner as in fig. 5.

In some embodiments, the receiver may actively send a request message to the sender, so that the sender sends a notification message to the receiver. For example, the receiving end and the sending end may preset a code 0102 to indicate the request message, and when the receiving end sends the code 0102 to the sending end, the sending end may send a notification message to the receiving end in response to the code 0102. In other embodiments, the receiving end may also passively wait for the transmitting end to send the notification message to the receiving end.

1002. When the judgment condition is met, the receiving end performs descrambling processing on the received signal and then performs decoding processing;

in this embodiment, the determining condition may include that the notification message from the sending end is a third notification message. For example, when the notification message from the sending end is the third notification message, which indicates that the sending end can transmit data in the new mode, the receiving end can process the received signal in the new mode. In practical applications, the determination condition may further include other conditions, for example, whether the user at the receiving end sets that the new mode is allowed or not, and the embodiment of the present application does not limit this. In some embodiments, the receiving end may determine that the determination condition is satisfied after detecting that all the conditions in the determination condition are satisfied.

In this embodiment, a process of performing descrambling and then decoding on a received signal by a receiving end is similar to that described in step 903 of the foregoing embodiment, and is not described herein again. In some embodiments, before performing descrambling processing at the receiving end, the receiving end may perform corresponding processing on the signal through the channel estimation module 410, the equalizer 409 and the demodulation module 408. In some embodiments, after the descrambling processing is performed at the receiving end, the receiving end may perform corresponding processing on the signal through the descrambling operation module 406, the de-streaming parser module 405, and the de-rate matching module 404 before performing the decoding processing at the receiving end. In some embodiments, after the decoding process is performed at the receiving end, the receiving end may perform a corresponding process on the signal through the combining module 402. The corresponding processing of the modules is similar to the functions of the modules in the foregoing embodiments, and details are not repeated herein.

In some embodiments, the preamble portion of the signal received by the receiving end may be used as a notification message, and the notification message may indicate whether the signal corresponds to a new mode or not of the mode adopted by the transmitting end. For example, the receiving end may determine the UID of the device to which the signal belongs according to the preamble of the signal, and then determine the transmission mode used by the signal according to the configuration table and the UID. If the transmission mode adopted by the signal is the new mode, the receiving end may control the first descrambling module 407 to take effect, and the second descrambling module 401 fails. If the transmission mode adopted by the signal is the old mode, the receiving end may control the first descrambling module 407 to fail, and the second descrambling module 401 takes effect. Specifically, the receiving end may control the first descrambling module 407 and the second descrambling module 401 through the controller, which may refer to some embodiments of the subsequent apparatus and is not described herein again.

In some embodiments, the receiving end may read the value of a particular bit from the preamble of the signal. If the value is 1, the receiving end may determine that the signal is transmitted in a new mode, and the receiving end may control the first descrambling module 407 to take effect and the second descrambling module 401 to fail. If the value is 0, the receiving end may determine that the signal is transmitted in the old mode, and the receiving end may control the first descrambling module 407 to fail and the second descrambling module 401 to take effect. In practical applications, the value of the specific bit may also be 2, 3, 4, 5, etc., and the value of the specific bit is not specifically limited in this embodiment of the application.

1003. And when the judgment condition is not met, the receiving end carries out descrambling after carrying out decoding processing on the received signal.

In this embodiment, the determination condition of the receiving end may be the same as or similar to the determination condition in step 1002, and is not described herein again.

In this embodiment, the process of performing decoding processing and then descrambling processing on the received signal by the receiving end is similar to the description of the receiving end in step 905 in the foregoing embodiment, and is not described herein again. In some embodiments, before the decoding process is performed at the receiving end, the receiving end may further perform corresponding processing on the signal through the channel estimation module 410, the equalizer 409, the demodulation module 408, the de-permuting operation module 406, the de-stream parser module 405, and the de-rate matching module 404. In some embodiments, after the receiving end performs the decoding process and before the descrambling process, the receiving end may further perform a corresponding process on the signal through the combining module 402. The corresponding processing of the modules is similar to the functions of the modules in the foregoing embodiments, and details are not repeated herein.

Fig. 9 is a diagram illustrating another example of data transmission between a transmitting end and a receiving end in the embodiment of the present application. The functional blocks of the transmitting end may include a first scrambling module 501, a pre-filling module 502, an encoding module 503, a rate matching module 504, a stream parser module 505, an out-of-order operation module 506, a second scrambling module 507, and a modulation module 508. The functional modules of the sending end may be similar to the functional modules of the sending end in the embodiment corresponding to fig. 3, which are not described again in this embodiment of the application. The functional modules at the receiving end may include a second descrambling module 601, a combining module 602, a decoding module 603, a de-rate matching module 604, a de-streaming parser module 605, a de-permuting operation module 606, a first descrambling module 607, a demodulation module 608, an equalizer 609, and a channel estimation module 610. The functional modules of the receiving end may be similar to the functional modules of the receiving end in the embodiment corresponding to fig. 3, and are not described again in this embodiment.

In some embodiments, the sender may set the first scrambling module 501 to be effective and the second scrambling module 507 to be ineffective. The receiving end may disable the first descrambling module 607 and enable the second descrambling module 601. At this time, the transmitting end and the receiving end may transmit data in the old mode, that is, according to the WLAN protocol, as shown in fig. 10. Fig. 10 is a diagram illustrating another example of data transmission between a transmitting end and a receiving end according to a WLAN protocol in the embodiment of the present application. In fig. 10, symbols "x" are respectively located below the second scrambling module 507 and the first descrambling module 607, which indicate that both the second scrambling module 507 and the first descrambling module 607 are disabled. In the embodiment of the present application, the definition of module failure and module effectiveness is the same as that of the previous embodiment, and is not described herein again.

In this embodiment, the sending end and the receiving end may transmit data in an old mode. The transmitting end may perform scrambling processing on data to be transmitted through the first scrambling module 501, and then perform encoding processing through the encoding module 503. In some embodiments, after the scrambling process is performed by the sender, the sender may also perform a corresponding process by the pre-filling module 502 before the encoding process is performed by the sender. In some embodiments, after the encoding processing is performed at the transmitting end, the transmitting end may further perform corresponding processing on data to be transmitted through the rate matching module 504, the stream parser module 505, the permuting operation module 506, and the modulation module 508. The transmitting end may then transmit the processed signal to the receiving end through a channel 509. After receiving the signal, the receiving end may decode the signal through the decoding module 603, and then descramble the signal through the second descrambling module 601 to obtain the target data. In some embodiments, before the receiving end performs the decoding process, the receiving end may further perform corresponding processing on the received signal through the channel estimation module 610, the equalizer 609, the demodulation module 608, the de-permuting operation module 606, the de-stream parser module 605, and the de-rate matching module 604. In some embodiments, after the decoding process is performed at the receiving end, the receiving end may further perform a corresponding process on the signal through the combining module 602 before performing the descrambling process at the receiving end. The corresponding processing of the modules is similar to the functions of the modules in the foregoing embodiments, and details are not repeated herein.

In some embodiments, the sender may set the first scrambling module 501 to be disabled and the second scrambling module 507 to be enabled. The receiving end may set the first descrambling module 607 to be effective and the second descrambling module 601 to be ineffective. At this time, the transmitting end and the receiving end may transmit data in a new mode, as shown in fig. 11. Fig. 11 is a diagram illustrating another example of data transmission by a transmitting end and a receiving end according to a new mode in the embodiment of the present application. In fig. 11, symbols "x" are respectively located below the first scrambling module 501 and the second descrambling module 601, which indicate that both the first scrambling module 501 and the second descrambling module 601 are disabled. In the embodiment of the present application, the definition of module failure and module effectiveness is the same as that of the previous embodiment, and is not described herein again.

In this embodiment, the sending end and the receiving end may transmit data in a new mode. The transmitting end may perform encoding processing on data to be transmitted through the encoding module 503, and then perform scrambling processing through the second scrambling module 507. In some embodiments, before the encoding process is performed by the sender, the sender may also perform a corresponding process on the data to be sent through the pre-filling module 502. In some embodiments, after the encoding process performed by the transmitting end, the transmitting end may further perform a rate matching process on the signal through the rate matching module 504 before performing a scrambling process. In some embodiments, after the scrambling process is performed at the transmitting end, the transmitting end may further perform a corresponding process on the signal through the stream parser module 505, the permuting operation module 506, and the modulation module 508. The transmitting end may transmit the processed signal to the receiving end via channel 509. After receiving the signal, the receiving end may perform descrambling on the signal through the first descrambling module 607, and then perform decoding through the decoding module 603. In some embodiments, before performing descrambling processing at the receiving end, the receiving end may further perform corresponding processing on the signal through the channel estimation module 610, the equalizer 609, the demodulation module 608, the de-permuting operation module 606, and the de-stream parser module 605. In some embodiments, after the receiving end performs the descrambling process, the receiving end may further perform a corresponding process on the signal through the rate de-matching module 604 before performing the decoding process at the receiving end. In some embodiments, after the decoding process is performed at the receiving end, the receiving end may further perform a corresponding process on the signal through the combining module 602. The corresponding processing of the modules is similar to the functions of the modules in the foregoing embodiments, and details are not repeated herein.

In some embodiments, the transmitting end and the receiving end may negotiate in advance to determine whether to perform the data transmission scheme of fig. 10 or perform the data transmission scheme of fig. 11. The negotiation method may refer to the foregoing embodiments corresponding to fig. 7 and fig. 8, which are not described again in this embodiment of the present application.

Fig. 12 is a schematic structural diagram of a WLAN device according to an embodiment of the present application, and as shown in fig. 12, the WLAN device includes an antenna 701 and a chip 702. Wherein, the antenna 701 is used for receiving radio waves, and the chip 702 is used for processing signals carried in the radio waves according to the similar manner of the corresponding embodiments of fig. 3 and fig. 4, so as to implement LLR soft combining and WLAN protocol compatibility.

In some embodiments, chip 702 may be a WLAN chip. For example, conventional WLAN chips include a high-pass (Qualcomm) AR9344 chip, a bosom (Broadcom) BCM43684 and BCM4366 chip, a haisi (hisicon) Hi1103 chip, a Cypress (Cypress) CYW89650 chip, a marcel electronic (Marvell) 88W9064 chip, a correlation department (MediaTek) MT7621 chip, a rui (Realtek) RTL8710 chip, and the like. The chip 702 in the embodiment of the present application is similar to a conventional WLAN chip, and implements the scheme of the embodiment of the present application.

In some embodiments, the WLAN device may also include a memory 703 and a processor 704. Where memory 703 is in communication with processor 704 and chip 702 is in communication with processor 704. The memory 703 is used to store computer programs. The processor 704 is used to implement upper layer applications.

The electronic device may also include a stand-alone Radio Frequency (RF) module. A separate RF module may be located between antenna 701 and chip 702. The RF module may also be integrated in the chip 702.

The WLAN device may be a terminal device or an access point device.

In some embodiments, fig. 13 is an internal schematic diagram of a chip 702 in a WLAN device according to an embodiment of the present disclosure. A transmitter 7021 and a receiver 7022 may be included in chip 702. The transmitter 7021 may include, among other things, a first scrambling module 301, a pre-population module 302, an encoding module 303, a rate matching module 304, a stream parser module 305, an out-of-order operation module 306, a second scrambling module 307, and a modulation module 308 similar to the corresponding embodiment of fig. 3. The receiver 7022 may include a second descrambling module 401, a combining module 402, a decoding module 403, a de-rate matching module 404, a de-stream parser module 405, a de-permuting operation module 406, a first descrambling module 407, a demodulation module 408, an equalizer 409, and a channel estimation module 410 similar to the corresponding embodiment of fig. 3. In some embodiments, the transmitter and receiver may be integrated in the same chip 702. In other embodiments, the transmitter and receiver may be integrated in separate chips.

In some embodiments, the processor 704 may determine whether the receiver supports the new mode according to a notification message uploaded by the receiver. And then, according to the notification message uploaded by the receiving end, a configuration table as shown in table 1 is established. In some embodiments, processor 704 may send a configuration table to chip 702. In other embodiments, the processor 704 may store the configuration table in the memory 703 for recall.

In some embodiments, chip 702 also has a controller built in. The controller may be connected to the first scrambling module 301, and configured to control a scrambling initial value of the first scrambling module 301 according to an indication corresponding to data to be transmitted. The data to be transmitted may include a data body and a data header, and when the transmitting end transmits data, the transmitting end may perform processing such as scrambling and encoding only on the data body, and does not perform processing on the data header. The data header may include an indication that may be used to cause the controller to determine whether the corresponding data to be transmitted is transmitted in the new mode. In some embodiments, the data header may be embodied as a preamble portion of a physical layer protocol data unit (PPDU).

In an example, the processor 704 first generates data to be transmitted, and writes a receiver UID corresponding to the data to be transmitted in a preamble of the data to be transmitted. When the controller detects data to be transmitted, the controller may read the UID of the receiving end from the preamble portion in the data to be transmitted, and then may determine whether the mode corresponding to the UID is a new mode or an old mode according to the UID and the configuration table such as table 1. If in the new mode, the controller may set the scrambling initial value of the first scrambling module 301 to zero, so that the first scrambling module 301 is disabled. If the mode is the old mode, the controller may perform the scrambling initial value of the first scrambling module 301 in the conventional manner without modification.

In another example, the processor 704 may first generate data to be sent, and determine, according to the receiver UID corresponding to the data to be sent and the configuration table, a transmission mode used by the data to be sent. If the transmission mode corresponding to the data to be transmitted is the new mode, the processor 704 can set a specific bit in the preamble of the data to be transmitted to 1. If the transmission mode corresponding to the data to be transmitted is the old mode, the processor 704 may set a specific bit in the preamble of the data to be transmitted to 0. When the controller detects that a specific bit in the preamble of the data to be transmitted is 1, the controller may set the scrambling initial value of the first scrambling module 301 to zero, so that the first scrambling module 301 is disabled. When the controller detects that the specific bit in the preamble of the data to be transmitted is 0, the controller may perform the scrambling initial value of the first scrambling module 301 in the conventional manner without modification.

In practical applications, the WLAN device may also send data to be sent in a new mode or an old mode in other manners, for example, the WLAN device may indicate whether the PPDU employs a new mode transmission through a field or one or more bits in the field in the preamble of the PPDU, which is not limited in this embodiment of the present application.

In this embodiment, in the process of sending data to be sent, the WLAN device controls the scrambling initial value in the second scrambling module 307 in a similar manner to the first scrambling module 301, and details are not repeated here.

In this embodiment of the application, in the processing procedure of the WLAN device receiving signals, the manner of controlling the scrambling initial values in the first descrambling module 407 and the second descrambling module 401 is similar to the manner of controlling the first scrambling module 301 and the second scrambling module 307, and specifically, the processing procedure of the WLAN device receiving signals may be:

in one possible example, after the chip 702 receives the PPDU, the UID of the device to which the PPDU belongs may be determined according to a preamble of the PPDU, and then the controller may determine the transmission mode used by the PPDU according to the configuration table and the UID. If the transmission mode adopted by the PPDU is the new mode, the controller in the chip 702 may control the first descrambling module 407 to take effect, and the second descrambling module 401 to fail. If the transmission mode adopted by the PPDU is the old mode, the controller in the chip 702 may control the first descrambling module 407 to fail, and the second descrambling module 401 to take effect.

In another possible example, when the chip 702 receives a PPDU, the value of a particular bit may be read from the preamble of the PPDU. If the value is 1, the chip 702 may determine that the PPDU is transmitted in a new mode, and a controller inside the chip 702 may control the first descrambling module 407 to be effective and the second descrambling module 401 to be disabled. If the value is 0, the chip 702 may determine that the PPDU is transmitted in the old mode, and a controller inside the chip 702 may control the first descrambling module 407 to be disabled and the second descrambling module 401 to be enabled. In practical applications, the chip 702 may further determine whether the PPDU employs a new mode for transmission through a field or one or more bits in the field in the preamble of the PPDU, which is not limited in this embodiment.

In another possible example, when the chip 702 receives a PPDU, it may be determined whether the PPDU is transmitted in a new mode according to a specific pattern of a preamble of the PPDU. The specific pattern may be a repetition or a special collocation of fields in the preamble, or may be another pattern, and the specific pattern is not specifically limited in the embodiment of the present application.

Embodiments also provide a transmitter chip, which may include a first scrambling module 301, a pre-filling module 302, an encoding module 303, a rate matching module 304, a stream parser module 305, an out-of-order operation module 306, a second scrambling module 307, and a modulation module 308. The transmitter chip is similar to the transmitter inside the chip 702 in the corresponding embodiment of fig. 13, and is not described here again.

The embodiment of the present application further provides a receiver chip, which may include a second descrambling module 401, a combining module 402, a decoding module 403, a de-rate matching module 404, a de-streaming parser module 405, a de-permuting operation module 406, a first descrambling module 407, a demodulation module 408, an equalizer 409, and a channel estimation module 410. The transmitter chip is similar to the receiver inside the chip 702 in the corresponding embodiment of fig. 13, and is not described here again.

Fig. 14 is an exemplary diagram of a transmitting end according to an embodiment of the present application. In the embodiment of the present application, the transmitting end may include a receiving unit 1401, a first processing unit 1402, a second processing unit 1403, and a transmitting unit 1404. The receiving unit 1401 is configured to execute or support the sending end to execute step 901 in each embodiment corresponding to the foregoing fig. 7. The first processing unit 1402 is configured to execute or support the sending end to execute step 902 in each embodiment corresponding to the foregoing fig. 7. The second processing unit 1403 is configured to execute or support the sending end to execute step 904 in each embodiment corresponding to fig. 7. The sending unit 1404 is configured to perform or support the sending end to perform

steps

903 and 905 in the foregoing embodiments corresponding to fig. 7.

Fig. 15 is an exemplary diagram of a receiving end according to an embodiment of the present application. In the embodiment of the present application, the receiving end may include a receiving unit 1501, a first processing unit 1502, and a second processing unit 1503. The receiving unit 1501 is configured to execute or support the receiving end to execute the steps 1001 in each embodiment corresponding to the foregoing fig. 8. The first processing unit 1502 is configured to execute or support the receiving end to execute the step 1002 in the foregoing embodiments corresponding to fig. 8. The second processing unit 1503 is configured to execute or support the receiving end to execute step 1003 in each embodiment corresponding to the foregoing fig. 8.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

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

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

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

The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application may be substantially implemented or contributed to by the prior art, or all or part of the technical solution may be embodied in a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.

Claims

1. A method of data processing, comprising:

a sending end receives a notification message from a receiving end;

when a judgment condition is met, the sending end carries out scrambling processing after coding processing on data to be sent so as to obtain a first signal to be sent, wherein the judgment condition comprises that the notification message indicates that the receiving end supports a mode of descrambling and then decoding the received signal;

after a first signal to be sent is obtained, the sending end sends the obtained first signal to be sent to the receiving end;

when the judgment condition is not met, the sending end carries out scrambling processing on the data to be sent and then carries out coding processing to obtain a second signal to be sent;

and after a second signal to be sent is obtained, the sending end sends the obtained second signal to be sent to the receiving end.

2. The method of claim 1, wherein the sending end performs scrambling processing after encoding processing on data to be sent to obtain a first signal to be sent, and comprises:

and the sending terminal performs rate matching after performing the coding processing on the data to be sent, and then performs the scrambling processing to obtain the first signal to be sent.

3. The method of claim 2, wherein the performing, by the sending end, rate matching after performing the coding process on the data to be sent, and then performing the scrambling process to obtain the first signal to be sent specifically comprises:

and the sending end carries out the coding processing, the rate matching, the scrambling processing, the stream analysis processing, the sequence changing operation and the modulation on the data to be sent in sequence to obtain the first signal to be sent.

4. The method of claim 2, wherein the performing, by the sending end, rate matching after the coding processing on the data to be sent, and then performing the scrambling processing to obtain the first signal to be sent comprises:

and the sending terminal performs rate matching, stream analysis processing and sequence changing operation on the data to be sent after the coding processing is performed on the data to be sent, and then performs scrambling processing to obtain the first signal to be sent.

5. The method of claim 4, wherein the performing, by the sending end, rate matching, stream parsing, and permuting after the encoding processing on the data to be sent, and then performing the scrambling processing to obtain the first signal to be sent comprises:

and the sending end carries out the coding processing, the rate matching, the stream analysis processing, the sequence changing operation, the scrambling processing and the modulation on the data to be sent in sequence to obtain the first signal to be sent.

6. A method of data processing, comprising:

the receiving end receives a notification message from the sending end;

when a judgment condition is met, the receiving end carries out descrambling processing and then carries out decoding processing on the received signal, wherein the judgment condition comprises that the notification message instructs the sending end to adopt a mode of encoding the data to be sent first and then scrambling;

and when the judgment condition is not met, the receiving end carries out descrambling after carrying out decoding processing on the received signal.

7. The method according to claim 6, wherein the receiving end performing descrambling processing and then performing decoding processing on the received signal to be transmitted specifically comprises:

the receiving end sequentially demodulates the received signals, carries out the operation of de-permuting, carries out de-streaming analysis processing, descrambles, carries out de-rate matching and decoding processing to obtain target data.

8. The method of claim 6, wherein the receiving end performs descrambling on the received signal to be transmitted and then performs decoding on the signal to be transmitted specifically comprises:

and the receiving end sequentially demodulates, descrambles, de-permutes, de-streams, analyzes, de-rates and decodes the received signals to obtain target data.

9. A wireless local area network, WLAN, device comprising an antenna and a chip, wherein:

the antenna is used for receiving radio waves;

the chip is used for processing signals carried in the radio waves according to the data processing method of any one of claims 1 to 8.

10. A chip, wherein the chip comprises: the device comprises a first scrambling module, an encoding module, a second scrambling module, a modulation module and a controller;

the first scrambling module is connected with the coding module;

the second scrambling module is connected between the coding module and the modulation module;

the controller is connected with the first scrambling module and is used for controlling a scrambling initial value of the first scrambling module according to an indication corresponding to data to be sent;

the controller is connected with the second scrambling module and used for controlling the scrambling initial value of the second scrambling module according to the indication corresponding to the data to be sent.

11. The chip of claim 10, wherein the chip further comprises: the system comprises a rate matching module, a stream parser module and an order changing operation module;

the first scrambling module, the encoding module, the rate matching module, the second scrambling module, the stream parser module, the sequence changing operation module and the modulation module are connected in sequence.

12. The chip of claim 10, wherein the chip further comprises: the system comprises a rate matching module, a stream parser module and an order changing operation module;

the first scrambling module, the encoding module, the rate matching module, the stream parser module, the sequence changing operation module, the second scrambling module and the modulation module are connected in sequence.

13. The chip is characterized by comprising a first descrambling module, a decoding module, a second descrambling module, a demodulation module and a controller;

the first descrambling module is connected with the decoding module;

the second descrambling module is connected between the decoding module and the demodulation module;

the controller is connected with the first descrambling module and used for controlling a descrambling initial value of the first descrambling module according to an instruction in a signal received by the chip;

the controller is connected with the second descrambling module and is used for controlling a descrambling initial value of the second descrambling module according to the indication in the signal received by the chip.

14. The chip of claim 13, wherein the chip further comprises a de-rate matching module, a de-streaming parser module, and a permute operation module;

the first descrambling module, the decoding module, the de-rate matching module, the second descrambling module, the de-streaming parser module, the de-permuting operation module and the demodulation module are connected in sequence.

15. The chip of claim 13, wherein the chip further comprises a de-rate matching module, a de-streaming parser module, and a de-permute operation module;

the first descrambling module, the decoding module, the de-rate matching module, the de-streaming parser module, the de-permuting operation module, the second descrambling module and the demodulation module are connected in sequence.

16. A computer-readable storage medium storing instructions that, when executed on a computer, cause the computer to perform the method of any one of claims 1 to 8.