CN117728917A

CN117728917A - Semantic information transmission method, semantic information transmission device, node equipment and medium

Info

Publication number: CN117728917A
Application number: CN202211082973.5A
Authority: CN
Inventors: 冯震; 王森; 王启星; 刘光毅
Original assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Current assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Priority date: 2022-09-06
Filing date: 2022-09-06
Publication date: 2024-03-19

Abstract

The invention provides a semantic information transmission method, a semantic information transmission device, node equipment and a semantic information transmission medium, and relates to the technical field of communication. The method comprises the following steps: acquiring first information sent by second node equipment; the first information comprises semantic feature information and check information, and the check information is generated according to the semantic feature information; and carrying out semantic retransmission analysis on the first information according to the semantic feature information and the verification information. By adopting the method, the first node equipment can carry out semantic retransmission analysis according to the semantic feature information and the check information of the received first information, and the evaluation analysis on whether the transmission is successful or whether retransmission is needed is carried out based on the semantic information when the semantic communication is realized.

Description

Semantic information transmission method, semantic information transmission device, node equipment and medium

Technical Field

The present invention relates to the field of wireless technologies, and in particular, to a semantic information transmission method, apparatus, node device, and medium.

Background

Semantic communication (Semantic Communications) refers to a communication scheme in which semantic information is extracted from a source, encoded, and transmitted in a noisy channel. The most significant features of semantic communication compared to classical communication are: communication is no longer limited to transmitting bit data without errors, but rather "darling" is achieved by means of the meaning of the information carried by the signal.

Since the semantic communication no longer requires the bit data of the receiving end and the sending end to be strictly consistent, the bit-level transmission error will not necessarily affect the semantic reconstruction of the receiving end. The existing protocol mainly checks the result of CRC after channel decoding to judge whether transmission is successful or not and whether retransmission is needed, and the retransmission mechanism based on channel coding is not applicable to future semantic communication. Therefore, the prior art still lacks corresponding processing flow for whether the semantic information is successfully transmitted or not and the processing mode after the semantic transmission fails.

Disclosure of Invention

The invention aims to provide a semantic information transmission method, a semantic information transmission device, node equipment and a semantic information transmission medium, which are used for realizing analysis and evaluation of successful semantic information transmission.

An embodiment of the present invention provides a semantic information transmission method, where the semantic information transmission method is performed by a first node device, and the method includes:

acquiring first information sent by second node equipment; the first information comprises semantic feature information and check information, and the check information is generated according to the semantic feature information;

and carrying out semantic retransmission analysis on the first information according to the semantic feature information and the verification information.

Optionally, the semantic information transmission method, wherein performing semantic retransmission analysis on the first information according to the semantic feature information and the verification information includes:

according to the semantic feature information and the verification information, analyzing the semantic similarity of the first information relative to the second information to obtain a transmission evaluation result of carrying out semantic retransmission analysis on the first information;

the second information is information corresponding to the first information, which is obtained from a cloud server.

Optionally, the semantic information transmission method, wherein the method further includes:

and when the transmission evaluation result indicates that the semantic similarity does not reach a preset condition, sending first feedback information to the second node equipment, wherein the first feedback information is used for indicating the semantic transmission non-acknowledgement NACK of the first information.

Optionally, the semantic information transmission method, wherein analyzing the semantic similarity of the first information relative to the second information according to the semantic feature information and the verification information includes:

comparing the semantic feature information with the reference semantic information corresponding to the semantic feature information to obtain a first difference measurement parameter; comparing the verification information with reference verification information corresponding to the verification information to obtain a second difference measurement parameter; the second information comprises the reference semantic information and the reference check information;

And obtaining the semantic similarity of the first information relative to the second information according to the first difference measurement parameter and the second difference measurement parameter.

Optionally, the semantic information transmission method, wherein obtaining the semantic similarity of the first information relative to the second information according to the first difference metric parameter and the second difference metric parameter includes:

obtaining a semantic difference degree value through weighted calculation according to the first difference measurement parameter and the second difference measurement parameter;

according to the semantic difference degree value, the first information and the second information, obtaining the semantic similarity of the first information relative to the second information; wherein the second information includes the reference semantic information and the reference check information.

Optionally, the semantic information transmission method, wherein the preset condition includes a preset threshold, and the method further includes:

under the condition that the semantic similarity is smaller than the preset threshold value, determining that the semantic similarity does not reach a preset condition;

and under the condition that the semantic similarity is larger than or equal to the preset threshold value, determining that the semantic similarity reaches the preset condition.

and when the transmission evaluation result shows that the semantic similarity reaches the preset condition, sending second feedback information to the second node equipment, wherein the second feedback information is used for indicating semantic transmission Acknowledgement (ACK) of the first information.

Optionally, in the semantic information transmission method, in a case of sending first feedback information to the second node device, the method further includes:

transmitting a semantic code retransmission request to the second node device if at least one of the following conditions is met:

checking the channel decoding Cyclic Redundancy Check (CRC) of the first information;

checking the channel coding CRC of the first information is not passed, and the channel coding retransmission times of the first information are larger than a first preset times;

the semantic code retransmission times of the first information are smaller than or equal to the second preset times.

transmitting a channel code retransmission request to the second node device if:

And checking the channel coding CRC of the first information is not passed, and the channel coding retransmission times of the first information are smaller than or equal to a first preset times.

Optionally, the semantic information transmission method, wherein the obtaining the first information sent by the second node device includes:

performing semantic decoding on the first information to obtain the semantic feature information; performing channel decoding on the first information to obtain the check information; or alternatively

And carrying out channel and semantic joint decoding on the first information to obtain the semantic feature information and the verification information.

An embodiment of the present invention further provides a semantic information transmission method, where the semantic information transmission method is performed by a second node device, and the method includes:

acquiring information to be transmitted;

extracting semantic feature information in the information to be sent, and generating check information according to the semantic feature information;

generating first information according to the semantic feature information and the verification information;

the first information is sent to a first node device.

Optionally, the semantic information transmission method, wherein generating the verification information according to the semantic feature information includes:

Generating the check information according to the semantic feature information and Cyclic Redundancy Check (CRC) check; or alternatively

And carrying out nonlinear transformation processing on the semantic feature information to obtain the verification information.

Optionally, the semantic information transmission method, wherein generating the first information according to the semantic feature information and the verification information includes: respectively carrying out semantic coding and channel coding on a transmission sequence comprising the semantic feature information and the verification information to generate the first information; or alternatively

And carrying out channel and semantic joint coding on a transmission sequence comprising the semantic feature information and the verification information to generate the first information.

receiving first feedback information sent by the first node equipment; the first feedback information is used for indicating semantic transmission non-acknowledgement NACK of the first information;

under the condition that the channel coding retransmission times of the first information are larger than a first preset times, carrying out semantic coding on the first information, and retransmitting the first information subjected to semantic coding to the first node equipment;

And carrying out channel coding on the first information and retransmitting the first information subjected to channel coding to the first node equipment under the condition that the channel coding retransmission times of the first information are smaller than or equal to the first preset times.

An embodiment of the present invention further provides a node device, where the node device is a first node device, and includes a transceiver and a processor, where:

the transceiver is used for acquiring first information sent by the second node equipment; the first information comprises semantic feature information and check information, and the check information is generated according to the semantic feature information;

the processor is used for carrying out semantic retransmission analysis on the first information according to the semantic feature information and the verification information.

An embodiment of the present invention further provides a node device, where the node device is a second node device, and includes a transceiver and a processor, where:

the transceiver is used for acquiring information to be transmitted;

the processor is used for extracting semantic feature information in the information to be sent and generating check information according to the semantic feature information; generating first information according to the semantic feature information and the verification information;

The transceiver is also configured to send the first information to a first node device.

The embodiment of the invention also provides a semantic information transmission device, which is applied to the first node equipment and comprises the following components:

the first acquisition module is used for acquiring first information sent by the second node equipment; the first information comprises semantic feature information and check information, and the check information is generated according to the semantic feature information;

and the analysis module is used for carrying out semantic retransmission analysis on the first information according to the semantic feature information and the verification information.

The embodiment of the invention also provides a semantic information transmission device, which is applied to the second node equipment and comprises:

the second acquisition module is used for acquiring information to be transmitted;

the first information generation module is used for extracting semantic feature information in the information to be sent and generating verification information according to the semantic feature information;

the second information generation module is used for generating first information according to the semantic feature information and the verification information;

and a fifth sending module, configured to send the first information to the first node device.

One embodiment of the present invention further provides a node device, including: a transceiver, a processor, a memory, and a program or instructions stored on the memory and executable on the processor; the method for transmitting semantic information according to any one of the above claims is realized when the processor executes the program or the instruction.

An embodiment of the present invention further provides a readable storage medium having a program or instructions stored thereon, where the program or instructions, when executed by a processor, implement the steps in the semantic information transmission method described in any one of the above.

At least one of the above technical solutions of the embodiments of the present invention has the following beneficial effects:

according to the semantic information transmission method, the first node equipment can conduct semantic retransmission analysis according to the semantic feature information and the check information of the received first information, and evaluation analysis on whether the semantic information is successfully transmitted or whether retransmission is needed is achieved based on semantic information in semantic communication.

Drawings

FIG. 1 is a schematic diagram of a system architecture employing a method according to an embodiment of the present invention;

FIG. 2 is a flow chart illustrating a semantic information transmission method according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of a method according to an embodiment of the present invention;

FIG. 4 is a schematic flow chart of one embodiment of a method according to an embodiment of the present invention;

FIG. 5 is a flowchart of a semantic information transmission method according to another embodiment of the present invention;

fig. 6 is a schematic structural diagram of a node device according to an embodiment of the present invention;

Fig. 7 is a schematic structural diagram of a node device according to another embodiment of the present invention;

fig. 8 is a schematic structural diagram of a semantic information transmission apparatus according to an embodiment of the present invention;

fig. 9 is a schematic structural diagram of a semantic information transmission apparatus according to another embodiment of the present invention.

Detailed Description

In order to make the technical problems, technical solutions and advantages to be solved more apparent, the following detailed description will be given with reference to the accompanying drawings and specific embodiments.

It should be appreciated that reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present invention. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

In various embodiments of the present invention, it should be understood that the sequence numbers of the following processes do not mean the order of execution, and the order of execution of the processes should be determined by the functions and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention.

In the examples provided herein, it should be understood that "B corresponding to a" means that B is associated with a from which B may be determined. It should also be understood that determining B from a does not mean determining B from a alone, but may also determine B from a and/or other information.

Semantic communication is a communication mode of extracting semantic information from a source and encoding and transmitting in a noisy channel. Specifically, the sender utilizes the deep learning network to extract semantic information from the knowledge base and provides strong prior information for transmission signals (bits, symbols and the like); the receiving end rebuilds the received semantic information based on the knowledge base and the deep learning network.

As shown in fig. 1, which is a schematic diagram of a semantic-based communication system, the semantic-based communication system mainly comprises a semantic information acquisition module, a semantic encoding module, a channel encoding module, a wireless channel, a channel decoding module, a semantic information recovery module, a sender local semantic knowledge base, a cloud shared knowledge base and a receiver local semantic knowledge base.

The sending end sends the information source information to the semantic information acquisition module, extracts the semantic feature sequence by means of the local semantic knowledge base of the sending end, sends the semantic feature sequence to the semantic coding module, carries out information source compression coding on the semantic feature sequence information, and then sends the semantic feature sequence information to the channel coding module to generate a channel coding sequence, and transmits the channel coding sequence to the receiving end through a wireless channel. At the receiving end, the channel decoding module firstly decodes the received signal, then the obtained decoding sequence is transmitted to the semantic decoding module, the decoded semantic feature sequence is obtained according to the local semantic knowledge base of the receiving end and is transmitted to the semantic information recovery module, and the recovery of the information source data is finally completed at the semantic information recovery module.

In order to realize analysis and evaluation of successful transmission of semantic information, the embodiment of the invention provides a semantic information transmission method, and a first node device can perform semantic retransmission analysis according to semantic feature information and check information of received first information, so that evaluation analysis on whether the semantic information is successfully transmitted or needs to be retransmitted or not based on semantic communication is realized.

One embodiment of the present invention provides a semantic information transmission method, which is executed by a first node device, as shown in fig. 2, and includes:

s201, acquiring first information sent by second node equipment; the first information comprises semantic feature information and check information, and the check information is generated according to the semantic feature information;

s202, carrying out semantic retransmission analysis on the first information according to the semantic feature information and the verification information.

Alternatively, performing the semantic retransmission analysis on the first information may also be referred to as performing a semantic retransmission evaluation analysis on the first information.

In the embodiment of the present invention, the first node device is a receiving end of the first information, for example, is one of a terminal and a base station; the second node device is a transmitting end of the first information, such as the other one of the base station and the terminal.

In the embodiment of the present invention, optionally, in step S202, according to the semantic feature information and the verification information, performing semantic retransmission analysis on the first information includes:

By adopting the embodiment, the first node equipment determines the semantic similarity of the first information relative to the second information by utilizing the semantic feature information and the check information, and judges whether the first information is successfully transmitted according to the semantic similarity, so that the accuracy of the semantic information transmission is evaluated by utilizing the semantic similarity, whether the semantic information is successfully transmitted can be accurately judged, and the evaluation analysis mode of semantic communication transmission is met.

In step S201, the process of the first node device acquiring the first information by the second node device, as shown in fig. 3, includes:

s2011, the second node equipment acquires information to be transmitted from information source content, optionally, the information to be transmitted comprises at least one of text, video and voice;

Extracting semantic features of the acquired information to be transmitted and segmenting the semantic features to acquire a plurality of information sequences S of the information to be transmitted _i ，i＝1,˙˙˙N,

S2012, the second node apparatus for each information sequence S _i Extracting semantic feature information c and adding check bits to the semantic feature information c to generate check information p; wherein, optionally, a plurality of information sequences S corresponding to the information to be transmitted _i Semantic feature sequences c for respectively obtaining semantic feature information c _i And a check sequence p for checking the information p _i Semantic feature sequence c _i And a check sequence p _i The transmission sequence (c, p) is constituted.

In the embodiment of the present invention, optionally, in the check information p, each check sequence p _i From corresponding semantic feature sequences c _i Generated by cyclic redundancy check (Cyclic Redundancy Check, CRC) check, or by a sequence c of semantic features _i Nonlinear transformation processing is carried out to obtain a corresponding check sequence p _i 。

S2013, the second node equipment respectively performs semantic coding and channel coding on a transmission sequence (c, p) comprising semantic feature information and check information to generate first information; or alternatively

Carrying out channel and semantic joint coding on a transmission sequence (c, p) comprising the semantic feature information and the verification information to generate first information;

S2014, the second node equipment sends the first information to the first node equipment through a channel;

s2015, the first node equipment performs signal detection, performs semantic decoding on the received first information, and obtains the semantic feature information; performing channel decoding on the first information to obtain the check information; or decoding the first information by a channel and semantics to obtain the semantic feature information and the verification information;

optionally, the received sequence of the first information is obtained after semantic decoding and channel decodingComprising a semantically decoded semantic feature sequence +.>Check sequence after channel decoding ++>

S202, receiving the sequenceCarrying out semantic retransmission analysis, namely carrying out semantic similarity calculation to obtain a transmission evaluation result of the semantic retransmission analysis;

and S203, when the transmission evaluation result shows that the evaluated semantic similarity reaches a preset condition, performing feature combination and semantic recovery to obtain first information transmitted to the first node equipment by the second node equipment.

In an embodiment of the present invention, optionally, according to the semantic feature information and the verification information, analyzing the semantic similarity of the first information with respect to the second information includes:

In the embodiment of the invention, the second information can be acquired by utilizing the shared knowledge base in the cloud server, and the accuracy of semantic transmission of the first information is evaluated by analyzing the semantic similarity of the second information and the first information.

Optionally, by comparing the semantic feature information with the reference semantic information corresponding to the semantic feature information, obtaining a first difference metric parameter, where the first difference metric parameter is formed as a subjective difference metric value of semantic similarity; and comparing the verification information with the reference verification information corresponding to the verification information to obtain a second difference measurement parameter, wherein the second difference measurement parameter is formed into an objective difference measurement value of semantic similarity, and the subjective difference measurement value and the objective difference measurement value are integrated to accurately evaluate the accuracy of semantic transmission of the first information.

Optionally, obtaining the semantic similarity of the first information relative to the second information according to the first difference metric parameter and the second difference metric parameter includes:

In the semantic information transmission method according to the embodiment of the present invention, according to the first difference measurement parameter and the second difference measurement parameter, a semantic difference degree value is obtained through weighted calculation, and the semantic difference degree value can be represented by the following formula one:

equation one:

wherein,for the second difference measure parameter, i.e. p and +.>An objective difference measure for comparing the check information obtained after channel decoding based on the first information>A difference between a check sequence p (reference check information) obtained from second information corresponding to the first information obtained from a cloud server; the check sequence p obtained by the second information corresponding to the first information obtained by the cloud server may be considered as the check sequence p equivalent to the transmission sequence of the first information. Thus through- >The Euclidean distance (l) between the transmission sequence and the reception sequence of the first information can be evaluated ₂ Norms). Typical computation metrics include one or more of MSE (text), PSNR (image), and Multi-scale structural similarity Index MS-SSIM (image). Taking MSE as an example, one canThe mathematical expression is:

where N is the length of the check sequence, p _i For the i-th reference check sequence,i=1, 2, and N for the i-th check sequence.

In addition, in the case of the optical fiber,for the first difference measure parameter, i.e. c and +.>Main part betweenA metric of visual difference for comparing semantic feature information +.>A difference between a semantic sequence c (reference semantic information) obtained from second information corresponding to the first information obtained from a cloud server; the semantic sequence c obtained by the second information corresponding to the first information obtained by the cloud server can be considered to be identical to the semantic feature sequence c of the transmission sequence of the first information. Thus, by->The user perceived differences between the sequences of messages received and transmitted can be evaluated, typically as calculated metrics such as (Learned perceptual image patch similarity) LPIPS (images).

Further, a first difference metric parameter determined from the above calculationAnd a second difference metric parameterObtaining a semantic difference degree value by weighting calculation>Referring to the formula I, the weighting calculation is performed>The coefficients of (a) are alpha, (-)>Wherein α is a constant between 0 and 1.

Semantic difference degree value obtained by using the formula IThe semantic similarity η of the first information with respect to the second information may be calculated using the following equation two:

formula II:

wherein, s is a norm of a transmission sequence corresponding to the first information when the second node device transmits, taking 2 norms as an example, the method can be expressed mathematically as:

the sending sequence of the corresponding first information when the second node equipment sends the first information can be determined according to second information corresponding to the first information, which is obtained from a cloud server;a norm of a received sequence of first information received for the first node device.

With this embodiment, the degree of difference value is determined based on the semanticsThe first information and the second information can obtain semantic similarity of the first information received by the first node device relative to the second information, and the semantic similarity is used as a basis for carrying out semantic retransmission evaluation to judge whether the received first information needs to be subjected to semantic retransmission.

In an embodiment of the present invention, optionally, the method further includes:

By using the semantic similarity eta calculated by the formula II, whether the semantic feature information of the received first information needs to be retransmitted or not can be evaluated, and whether the semantic transmission is successful or not can be judged.

In one embodiment, the preset condition optionally includes a preset threshold η _th The preset threshold is a judgment basis for carrying out semantic retransmission analysis in advance.

Wherein the method further comprises:

when the semantic similarity eta is smaller than a preset threshold eta _th Under the condition of (1), determining that the semantic similarity does not reach a preset condition, and carrying out semantic transmission retransmission on the semantic transmission corresponding to the first information;

when the semantic similarity eta is greater than or equal to the preset threshold eta _th Under the condition of (1), determining that the semantic similarity reaches the preset condition, and transmitting the corresponding semantic of the first information successfully without retransmitting the semantic transmission.

In one embodiment, optionally, the method further includes:

By adopting the embodiment, when the transmission evaluation result indicates that the semantic similarity is greater than or equal to the preset threshold, second feedback information for indicating the semantic transmission acknowledgement ACK of the first information is sent to the second node device, that is, the semantic transmission corresponding to the first information is successful.

As shown in fig. 1 and fig. 3, the first information received by the first node device is sent after the second node device performs semantic coding and channel coding processing on the information to be sent, and after receiving the first information, the first node device sequentially completes channel decoding and semantic decoding, and obtains CRC through channel decoding.

Checking CRC obtained through channel decoding;

and judging whether retransmission is needed by the second node equipment according to a check result of checking CRC obtained by channel decoding and a transmission evaluation result of carrying out semantic retransmission analysis on the first information.

With this embodiment, for semantic communications, a CRC check of a pure channel decoding fails to cause retransmission.

In particular, when the semantic transmission fails, in order to increase the retransmission efficiency, the first node device may further locate the position of the transmission failure, i.e. determine whether the transmission failure is due to an error in the semantic coding or the channel coding, or both. When the channel coding is wrong and the semantic verification is correct, retransmission is not needed.

Optionally, in the case of sending the first feedback information to the second node device, the method further comprises:

checking the channel coding CRC of the first information;

Specifically, with this embodiment, upon determining that the semantic similarity η is smaller than the preset threshold η _th Under the condition of (1) determining that the semantic similarity does not reach a preset condition, when semantic transmission corresponding to the first information is unsuccessful and semantic transmission retransmission is needed, after sending first feedback information indicating that the semantic transmission of the first information is not confirmed NACK to the second node equipment, further judging the check of channel decoding CRC:

If the channel coding retransmission times do not reach the upper limit (the first preset times), the first node equipment also feeds back channel coding NACK to the second node equipment to request channel coding retransmission; if the channel coding retransmission times reach the upper limit (first preset times), the first node equipment also sends a semantic coding retransmission request to the second node equipment;

in another embodiment, the first node device further sends a semantic code retransmission request to the second node device in case the channel coding CRC passes.

With this embodiment, upon determining that the semantic similarity η is smaller than the preset threshold η _th If the check of the channel coding CRC of the first information is not passed and the number of channel coding retransmissions of the first information is less than or equal to the first preset number of times, the second node device is requested to perform channel coding retransmission, or alternatively, the second node device is requested to perform channel coding retransmission by feeding back channel coding NACK to the second node device.

In the semantic information transmission method according to the embodiment of the invention, when the semantic similarity eta is determined to be larger than the preset threshold eta _th And (3) if the semantic similarity reaches the preset condition, sending second feedback information for indicating the semantic transmission Acknowledgement (ACK) of the first information to the second node equipment no matter whether the channel decoding (CRC) of the first information passes or not when the semantic transmission of the first information is successful.

By adopting the semantic information transmission method provided by the embodiment of the invention, based on the semantic retransmission mode, the CRC (cyclic redundancy check) can not request retransmission when failing to pass after channel decoding, and whether the semantic similarity meets the requirement of a threshold value is further judged. Compared with the existing protocol, the method is beneficial to reducing retransmission caused by physical layer channel coding error and improving the transmission efficiency of a communication system.

Fig. 4 is a schematic flow chart of a semantic information transmission method according to an embodiment of the present invention, and a specific flow for semantic information transmission with reference to fig. 3 includes the following steps:

s401, a second node device acquires information to be transmitted, performs semantic extraction on the information to be transmitted, and acquires a transmission sequence (c, p) comprising semantic feature information and verification information;

S402, carrying out semantic coding on a transmission sequence (c, p);

s403, performing channel coding on the transmission sequence (c, p);

s404, the second node device sends the first information to the first node device through a channel;

s405, the first node equipment performs channel decoding on the received first information to obtain verification information of the first information;

s406, the first node device performs semantic decoding on the received first information to obtain a receiving sequence of the first informationCarrying out semantic similarity calculation and determining semantic similarity eta;

s407, the first node device judges whether the semantic similarity eta is greater than or equal to a preset threshold eta _th If yes, go to step S408; if the judgment result is negative, executing step S409;

s408, determining that the semantic transmission of the first information is successful;

s409, judging whether the channel decoding CRC passes or not; if the verification is passed, step S410 is executed; if the verification is not passed, step S413 is performed;

s410, the first node equipment sends first feedback information indicating the semantic transmission non-acknowledgement NACK of the first information to the second node equipment;

s411, judging whether the semantic code retransmission times of the first information are larger than a second preset times; if the determination result is no, step S412 is performed;

S412, the first node device sends a semantic code retransmission request to the second node device, so that the second node device returns to execute the step S402;

s413, the first node device sends third feedback information of the channel coding NACK to the second node device;

s414, the first node device judges whether the channel coding retransmission times are larger than a first preset times; if yes, go to step S411; if the judgment result is no, executing step S415;

s415, the first node device sends a channel coding retransmission request to the second node device, so that the second node device returns to execute step S403.

By adopting the semantic information transmission method, whether retransmission needs to be initiated or not is judged by calculating the semantic similarity, the problem of how to judge whether retransmission is needed or not and how to execute a retransmission flow in semantic communication is solved by adopting the semantic-based retransmission mode, and channel coding retransmission caused by physical layer transmission errors can be reduced, so that the transmission efficiency of a communication system is improved.

The embodiment of the invention also provides a semantic information transmission method, which is executed by the second node device, as shown in fig. 5, and comprises the following steps:

s510, obtaining information to be transmitted;

S520, extracting semantic feature information in the information to be sent, and generating check information according to the semantic feature information;

s530, generating first information according to the semantic feature information and the verification information;

and S540, the first information is sent to the first node equipment.

By adopting the semantic information transmission method provided by the embodiment of the invention, the second node equipment generates the check information according to the semantic feature information of the information to be transmitted, and transmits the first information generated by the semantic feature information and the check information to the first node equipment, so that the first node equipment can carry out semantic retransmission analysis according to the semantic feature information and the check information of the received first information, and the evaluation analysis on whether the semantic information is successfully transmitted or needs retransmission is realized when the semantic communication is realized.

generating the check information according to the semantic feature information and CRC check; or alternatively

It should be noted that, the description of the specific implementation manner when the semantic information transmission method according to the embodiment of the present invention is applied to the first node device is also applicable to the second node device, so that the specific implementation manner when the method according to the embodiment of the present invention is executed by the second node device will not be described in detail herein, and specific reference may be made to the description about the first node device when the method is executed.

An embodiment of the present invention further provides a node device, which is a first node device, as shown in fig. 6, where the node device 600 includes a transceiver 610 and a processor 620, where:

the transceiver 610 is configured to obtain first information sent by the second node device; the first information comprises semantic feature information and check information, and the check information is generated according to the semantic feature information;

the processor 620 is configured to perform semantic retransmission analysis on the first information according to the semantic feature information and the verification information.

Optionally, the node device, wherein the processor 620 performs semantic retransmission analysis on the first information according to the semantic feature information and the verification information, including:

Optionally, the node device, wherein the transceiver 610 is further configured to:

Optionally, the node device, wherein the processor 620 analyzes the semantic similarity of the first information with respect to the second information according to the semantic feature information and the verification information, including:

Optionally, the node device, wherein the processor 620 obtains the semantic similarity of the first information with respect to the second information according to the first difference metric parameter and the second difference metric parameter, including:

Optionally, the node device, wherein the preset condition includes a preset threshold, and wherein the processor 620 is further configured to:

Optionally, the node device, wherein the processor 620 is further configured to:

Optionally, the node device, where, in a case of sending the first feedback information to the second node device, the transceiver 610 is further configured to:

checking the channel coding CRC of the first information;

Optionally, the node device, wherein the transceiver 610 obtains the first information sent by the second node device, including:

An embodiment of the present invention further provides a node device, which is a second node device, as shown in fig. 7, where the node device 700 includes a transceiver 710 and a processor 720, where:

the transceiver 710 is configured to obtain information to be sent;

the processor 720 is configured to extract semantic feature information in the information to be sent, and generate verification information according to the semantic feature information; generating first information according to the semantic feature information and the verification information;

the transceiver 710 is further configured to send the first information to a first node device.

Optionally, the node device, wherein the processor 720 generates verification information according to the semantic feature information, including:

Optionally, the node device, wherein the processor 720 generates the first information according to the semantic feature information and the verification information, including: respectively carrying out semantic coding and channel coding on a transmission sequence comprising the semantic feature information and the verification information to generate the first information; or alternatively

Optionally, the node device, wherein the processor 720 is further configured to:

The embodiment of the invention also provides a semantic information transmission device, which is applied to the first node equipment, as shown in fig. 8, and comprises:

a first obtaining module 810, configured to obtain first information sent by the second node device; the first information comprises semantic feature information and check information, and the check information is generated according to the semantic feature information;

And the analysis module 820 is configured to perform semantic retransmission analysis on the first information according to the semantic feature information and the verification information.

Optionally, the semantic information transmission apparatus, wherein the analyzing module 820 performs semantic retransmission analysis on the first information according to the semantic feature information and the verification information, and includes:

Optionally, the semantic information transmission device, wherein the device further includes:

a first sending module 830, configured to send first feedback information to the second node device when the transmission evaluation result indicates that the semantic similarity does not reach a preset condition, where the first feedback information is used to indicate a semantic transmission non-acknowledgement NACK of the first information.

Optionally, the semantic information transmission apparatus, wherein the analyzing module 820 analyzes the semantic similarity of the first information with respect to the second information according to the semantic feature information and the verification information, and includes:

Optionally, the semantic information transmission apparatus, wherein the analyzing module 820 obtains the semantic similarity of the first information relative to the second information according to the first difference metric parameter and the second difference metric parameter, including:

Optionally, the semantic information transmitting apparatus, wherein the preset condition includes a preset threshold, wherein the analysis module 820 is further configured to:

and a second sending module 840, configured to send second feedback information to the second node device when the transmission evaluation result indicates that the semantic similarity reaches the preset condition, where the second feedback information is used to indicate a semantic transmission acknowledgement ACK of the first information.

Optionally, the semantic information transmitting apparatus, where in a case of sending first feedback information to the second node device, the apparatus further includes:

a third sending module 850, configured to send a semantic code retransmission request to the second node device if at least one of the following conditions is satisfied:

checking the channel coding CRC of the first information;

a fourth sending module 860, configured to send a channel coding retransmission request to the second node device if the following condition is satisfied:

Optionally, the semantic information transmitting apparatus, where the first obtaining module 810 obtains first information sent by the second node device, includes:

The embodiment of the invention also provides a semantic information transmission device, which is applied to the second node equipment, as shown in fig. 9, and the device comprises:

A second obtaining module 910, configured to obtain information to be sent;

the first information generating module 920 is configured to extract semantic feature information in the information to be sent, and generate verification information according to the semantic feature information;

a second information generating module 930, configured to generate first information according to the semantic feature information and the verification information;

a fifth sending module 940 is configured to send the first information to the first node device.

Optionally, the semantic information transmitting apparatus, wherein the first information generating module 920 generates verification information according to the semantic feature information, includes:

Optionally, the semantic information transmitting apparatus, wherein the second information generating module 930 generates the first information according to the semantic feature information and the verification information, includes:

respectively carrying out semantic coding and channel coding on a transmission sequence comprising the semantic feature information and the verification information to generate the first information; or alternatively

Optionally, the semantic information transmitting apparatus further includes a processing module 950 configured to:

The embodiment of the invention also provides node equipment, which comprises: a transceiver, a processor, a memory, and a program or instructions stored on the memory and executable on the processor; the method is characterized in that the processor executes the program or the instruction to realize the semantic information transmission method according to any one of the above.

Alternatively, the node device may be the first node device or the second node device described above.

The specific implementation manner of implementing the semantic information transmission method according to any one of the foregoing embodiments of the first node device or the second node device may be combined with fig. 1 to fig. 7, and refer to the detailed description when the foregoing semantic information transmission method is applied to the first node device or the second node device, which is not described herein again.

The readable storage medium of the embodiment of the present invention stores a program or an instruction, where the program or the instruction realizes the steps in the semantic information transmission method as described above when being executed by a processor, and can achieve the same technical effects, and for avoiding repetition, a detailed description is omitted herein.

Wherein the processor is a processor in the first node device or the second node device described in the above embodiment. The readable storage medium includes a computer readable storage medium such as a Read-Only Memory (ROM), a random access Memory (Random Access Memory RAM), a magnetic disk or an optical disk.

It is further noted that the terminals described in this specification include, but are not limited to, smartphones, tablets, etc., and that many of the functional components described are referred to as modules in order to more particularly emphasize their implementation independence.

In embodiments of the invention, the modules may be implemented in software for execution by various types of analyzers. An identified module of executable code may, for instance, comprise one or more physical or logical blocks of computer instructions which may, for instance, be organized as an object, procedure, or function. Nevertheless, the executables of an identified module need not be physically located together, but may comprise disparate instructions stored in different bits which, when joined logically together, comprise the module and achieve the stated purpose for the module.

Indeed, a module of executable code may be a single instruction, or many instructions, and may even be distributed over several different code segments, among different programs, and across several memory devices. Likewise, operational data may be identified within modules and may be embodied in any suitable form and organized within any suitable type of data structure. The operational data may be collected as a single data set, or may be distributed over different locations including over different storage devices.

Where a module may be implemented in software, taking into account the level of existing hardware technology, a module may be implemented in software, and one skilled in the art may, without regard to cost, build corresponding hardware circuitry, including conventional Very Large Scale Integration (VLSI) circuits or gate arrays, and existing semiconductors such as logic chips, transistors, or other discrete components, to achieve the corresponding functions. A module may also be implemented in programmable hardware devices such as field programmable gate arrays, programmable array logic, programmable logic devices or the like.

The exemplary embodiments described above are described with reference to the drawings, many different forms and embodiments are possible without departing from the spirit and teachings of the present invention, and therefore, the present invention should not be construed as limited to the exemplary embodiments set forth herein. Rather, these exemplary embodiments are provided so that this disclosure will be thorough and complete, and will convey the scope of the invention to those skilled in the art. In the drawings, the size of the elements and relative sizes may be exaggerated for clarity. The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. Unless otherwise indicated, a range of values includes the upper and lower limits of the range and any subranges therebetween.

While the foregoing is directed to the preferred embodiments of the present invention, it will be appreciated by those skilled in the art that various modifications and adaptations can be made without departing from the principles of the present invention, and such modifications and adaptations are intended to be comprehended within the scope of the present invention.

Claims

1. A method of semantic information transfer, performed by a first node device, the method comprising:

2. The semantic information transmission method according to claim 1, wherein performing semantic retransmission analysis on the first information based on the semantic feature information and the verification information comprises:

3. The semantic information transmission method according to claim 2, wherein the method further comprises:

4. The semantic information transmission method according to claim 2, wherein analyzing the semantic similarity of the first information with respect to the second information based on the semantic feature information and the verification information comprises:

5. The semantic information transmission method according to claim 4, wherein obtaining the semantic similarity of the first information with respect to the second information according to the first difference metric parameter and the second difference metric parameter comprises:

6. A semantic information transfer method according to claim 3 wherein the preset conditions comprise a preset threshold, wherein the method further comprises:

7. The semantic information transmission method according to claim 3 or 6, characterized in that the method further comprises:

8. A semantic information transmission method according to claim 3, wherein in case the first feedback information is sent to the second node device, the method further comprises:

9. A semantic information transmission method according to claim 3, wherein in case the first feedback information is sent to the second node device, the method further comprises:

10. The semantic information transmission method according to claim 1, wherein the acquiring the first information sent by the second node apparatus includes:

11. A semantic information transmission method performed by a second node apparatus, the method comprising:

acquiring information to be transmitted;

the first information is sent to a first node device.

12. The semantic information transmission method according to claim 11, wherein generating verification information from the semantic feature information comprises:

13. The semantic information transmission method according to claim 11, wherein generating first information from the semantic feature information and the verification information comprises: respectively carrying out semantic coding and channel coding on a transmission sequence comprising the semantic feature information and the verification information to generate the first information; or alternatively

14. The semantic information transfer method of claim 11, wherein the method further comprises:

15. A node device, the node device being a first node device comprising a transceiver and a processor, characterized by:

16. A node device, the node device being a second node device comprising a transceiver and a processor, characterized in that:

the transceiver is used for acquiring information to be transmitted;

17. A semantic information transmission apparatus, applied to a first node device, the apparatus comprising:

18. A semantic information transmission apparatus, characterized by being applied to a second node device, the apparatus comprising:

19. A node device, comprising: a transceiver, a processor, a memory, and a program or instructions stored on the memory and executable on the processor; -wherein the processor, when executing the program or instructions, implements the semantic information transmission method according to any one of claims 1 to 10 or implements the semantic information transmission method according to any one of claims 11 to 14.

20. A readable storage medium having stored thereon a program or instructions, which when executed by a processor, realizes the steps in the semantic information transmission method according to any one of claims 1 to 10 or the steps in the semantic information transmission method according to any one of claims 11 to 14.