CN111884757B - Message transmission method, device, computer equipment and storage medium - Google Patents
Message transmission method, device, computer equipment and storage medium Download PDFInfo
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- CN111884757B CN111884757B CN202010640145.3A CN202010640145A CN111884757B CN 111884757 B CN111884757 B CN 111884757B CN 202010640145 A CN202010640145 A CN 202010640145A CN 111884757 B CN111884757 B CN 111884757B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0056—Systems characterized by the type of code used
- H04L1/0059—Convolutional codes
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/69—Spread spectrum techniques
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0041—Arrangements at the transmitter end
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0056—Systems characterized by the type of code used
- H04L1/0071—Use of interleaving
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The application discloses a message transmission method, a message transmission device, computer equipment and a storage medium, and relates to the technical field of information processing. The message transmission method comprises the steps of obtaining a message to be transmitted, wherein the message comprises a synchronous header, a signaling and data, the data comprises a plurality of data packets, the signaling comprises the transmission rate of the message and the number of the data packets of the plurality of data packets, and known data are filled between the signaling and the data and among the plurality of data packets of the data. And sending the message to a receiving end so that the receiving end obtains a plurality of data packets in the message according to the number of the data packets and the transmission rate. The message in the embodiment of the application can carry a plurality of data packets, and the number of the data packets is not limited, so that the information quantity of the payload carried in the message is larger, and the transmission efficiency of the payload is improved.
Description
Technical Field
The present invention relates to the field of information processing technologies, and in particular, to a method and apparatus for transmitting a message, a computer device, and a storage medium.
Background
Medium wave communication means radio communication using electromagnetic waves having a wavelength of 1000 to 100m and a frequency of 300 to 3000 KHz.
At present, the modulation mode of the medium wave communication system is generally MFSK (english: more Frequency Shift Keying, chinese: multilevel digital frequency modulation) modulation, and the message structure is generally: synchronization header + waveform information + packet.
However, when transmitting data, the number of data packets carried by the message is fixed, so that the transmission efficiency of the payload is low.
Disclosure of Invention
In view of this, it is necessary to provide a message transmission method, apparatus, computer device, and storage medium for solving the problem of low payload transmission efficiency in the above method.
A method for transmitting messages, the method comprising:
obtaining a message to be sent, wherein the message comprises a synchronous header, a signaling and data, the data comprises a plurality of data packets, the signaling comprises the transmission rate of the message and the number of the data packets of the plurality of data packets, and known data are filled between the signaling and the data and among the plurality of data packets of the data;
and sending the message to the receiving end so that the receiving end obtains a plurality of data packets in the message according to the number of the data packets and the transmission rate.
In one embodiment of the present application, obtaining a message to be sent includes:
acquiring a payload of a signaling and a payload of each data packet;
respectively carrying out target preprocessing on the effective load of the signaling and the effective load of each data packet to obtain the signaling and each data packet;
and generating a message to be transmitted according to the synchronous header, the signaling, each data packet and preset known data.
In one embodiment of the present application, the target pre-processing includes:
convolutionally encoding a target payload to obtain a convolved payload, wherein the target payload is a signaling payload or a payload of each data packet;
interleaving the convolved payloads to obtain interleaved payloads;
orthogonal spreading is carried out on the interweaved effective load, and the effective load after spreading is obtained;
scrambling codes are added to the payload after the spread spectrum, and the payload after the scrambling codes is obtained;
and modulating the scrambled payload to obtain a modulated payload.
In one embodiment of the present application, performing orthogonal spreading on the interleaved payloads to obtain spread payloads, including:
determining the repetition times of the orthogonal spread spectrum according to the transmission rate;
and performing repeated frequency spreading treatment on the interleaved payload to obtain the spread payload.
In one embodiment of the present application, orthogonally spreading the interleaved payloads comprises:
the interleaved payloads are orthogonally spread based on the walsh codes.
In one embodiment of the present application, modulating the scrambled payload includes:
the scrambled payload is modulated based on a minimum frequency shift keying technique.
In one embodiment of the present application, the known data includes a pseudo random sequence corresponding to a minimum frequency shift keying technique.
In one embodiment of the present application, the length of the known data is determined based on the transmission rate.
In one embodiment of the present application, the synchronization header includes a pseudo random sequence corresponding to a minimum frequency shift keying technique.
In one embodiment of the present application, the payload of the signaling includes a cyclic redundancy check code of several bits.
A message transmission apparatus, the apparatus comprising:
the acquisition module is used for acquiring a message to be transmitted, wherein the message comprises a synchronous header, a signaling and data, the data comprises a plurality of data packets, the signaling comprises the transmission rate of the message and the number of the data packets of the plurality of data packets, and known data is filled between the signaling and the data and among the plurality of data packets included in the data;
and the sending module is used for sending the message to the receiving end so that the receiving end can acquire a plurality of data packets in the message according to the number of the data packets and the transmission rate.
A computer device comprising a memory and a processor, the memory storing a computer program which when executed by the processor performs the steps of:
obtaining a message to be sent, wherein the message comprises a synchronous header, a signaling and data, the data comprises a plurality of data packets, the signaling comprises the transmission rate of the message and the number of the data packets of the plurality of data packets, and known data are filled between the signaling and the data and among the plurality of data packets of the data;
and sending the message to the receiving end so that the receiving end obtains a plurality of data packets in the message according to the number of the data packets and the transmission rate.
A computer readable storage medium having stored thereon a computer program which when executed by a processor performs the steps of:
obtaining a message to be sent, wherein the message comprises a synchronous header, a signaling and data, the data comprises a plurality of data packets, the signaling comprises the transmission rate of the message and the number of the data packets of the plurality of data packets, and known data are filled between the signaling and the data and among the plurality of data packets of the data;
and sending the message to the receiving end so that the receiving end obtains a plurality of data packets in the message according to the number of the data packets and the transmission rate.
The beneficial effects that technical scheme that this application embodiment provided include at least:
the message transmission method, the message transmission device, the computer equipment and the storage medium can improve the effective load transmission efficiency. The message transmission method comprises the steps of obtaining a message to be transmitted, wherein the message comprises a synchronous header, a signaling and data, the data comprises a plurality of data packets, the signaling comprises the transmission rate of the message and the number of the data packets of the plurality of data packets, and known data are filled between the signaling and the data and among the plurality of data packets of the data. And sending the message to a receiving end so that the receiving end obtains a plurality of data packets in the message according to the number of the data packets and the transmission rate. Specifically, the transmission rate in the signaling is used to represent the sending rate of the message, so that the receiving end adaptively parses the message Wen Boxing according to the sending rate of the sending end, and the number of data packets in the signaling is used to represent the number of data packets carried by the message, so that the receiving end can identify the number of data packets to be received, and the omission of the data packets is avoided. The message in the embodiment of the application can carry a plurality of data packets, and the number of the data packets is not limited, so that the information quantity of the payload carried in the message is larger, and the transmission efficiency of the payload is improved.
Drawings
Fig. 1 is a schematic diagram of an implementation environment of a message transmission method according to an embodiment of the present application;
fig. 2 is a flowchart of a message transmission method provided in an embodiment of the present application;
fig. 3 is a schematic diagram of a message structure of a message provided in an embodiment of the present application;
fig. 4 is a flowchart of another method for transmitting a message according to an embodiment of the present application;
FIG. 5 is a flowchart of a target preprocessing process according to an embodiment of the present application;
FIG. 6 is a schematic diagram of another message structure according to an embodiment of the present disclosure;
fig. 7 is a block diagram of a message transmission device according to an embodiment of the present application;
fig. 8 is a block diagram of a computer device according to an embodiment of the present application.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present application more apparent, the embodiments of the present application will be described in further detail below with reference to the accompanying drawings.
Medium wave communication means radio communication using electromagnetic waves having a wavelength of 1000 to 100m and a frequency of 300 to 3000 KHz. At present, the modulation mode of the medium wave communication system is generally MFSK (english: more Frequency Shift Keying, chinese: multilevel digital frequency modulation) modulation, and the message structure is generally: synchronization header + waveform information + packet.
The message structure of this approach can only carry one packet at a time, and the length of the payload of each packet is fixed. When a plurality of data packets need to be transmitted, a synchronization header and waveform information need to be added to each data packet. However, the transmission of the synchronization header and the waveform information is required for each packet transmission, which results in waste of communication resources, and the payload length that can be carried by the waveform packet is fixed, so that the transmission efficiency of the payload is low.
Further, the message modulated by the MFSK modulation method needs to be transmitted at a typical communication rate, and the receiving end performs waveform recovery on the received message according to a communication rate preset with the sending end.
The message transmission method provided by the embodiment of the application can improve the effective load transmission efficiency. The message transmission method comprises the steps of obtaining a message to be transmitted, wherein the message comprises a synchronous header, a signaling and data, the data comprises a plurality of data packets, the signaling comprises the transmission rate of the message and the number of the data packets of the plurality of data packets, and known data are filled between the signaling and the data and among the plurality of data packets of the data. And sending the message to a receiving end so that the receiving end obtains a plurality of data packets in the message according to the number of the data packets and the transmission rate. Specifically, the transmission rate in the signaling is used to represent the sending rate of the message, so that the receiving end adaptively parses the message Wen Boxing according to the sending rate of the sending end, and the number of data packets in the signaling is used to represent the number of data packets carried by the message, so that the receiving end can identify the number of data packets to be received, and the omission of the data packets is avoided. The message in the embodiment of the application can carry a plurality of data packets, and the number of the data packets is not limited, so that the information quantity of the payload carried in the message is larger, and the transmission efficiency of the payload is improved.
The following will briefly explain an implementation environment related to the message transmission method provided in the embodiment of the present application.
Fig. 1 is a schematic diagram of an implementation environment related to a packet transmission method according to an embodiment of the present application, as shown in fig. 1, where the implementation environment may include a plurality of network devices (only two are shown in fig. 1 by way of example), where a network device 101 communicates with a network device 102 through a wireless communication link. The network device 101 and the network device 102 may be, but not limited to, various personal computers, notebook computers, smart phones, tablet computers, and portable wearable devices.
In this application, the network device 101 is referred to as a transmitting device, and the network device 102 is referred to as a receiving device.
Referring to fig. 2, a flowchart of a message transmission method provided in an embodiment of the present application is shown, where the message transmission method may be applied to the network device shown in fig. 1, and the message transmission method includes:
in step 201, the network device obtains a message to be sent.
The message includes a synchronization header, signaling and data.
In this embodiment, a message structure of a message is shown in fig. 3, where:
TLC/AGC is an automatic gain control symbol used to adjust the level output when the waveform is sent.
The symbol length of the synchronization header may be denoted as PNLEN, and optionally, the synchronization header may include a pseudorandom sequence corresponding to a modulation mode of a message, for example, the modulation mode of the message is an MSK (english: minimum Shift Keying; chinese: minimum frequency shift keying) modulation mode, and the synchronization header may include the pseudorandom sequence modulated by the MSK. The synchronization preamble may be used for signal detection, synchronization, frequency offset estimation. In addition, the synchronization header has certain random characteristics, strong autocorrelation characteristics and weak cross correlation with other sequences.
Signaling, the symbol length of which is PACKETNUM, immediately follows the synchronization header. Alternatively, the length of the signaling may range from 0 to 255 bits.
The signaling includes a transmission rate of the message and a number of packets of the plurality of packets. In particular, the transmission rate of the message and the number of packets of the plurality of packets are represented by corresponding payloads in the signaling. After the receiving end analyzes the effective load of the signaling, the transmitting rate and the data packet number of the message can be obtained, then the data packet is received in a self-adaptive mode according to the transmitting rate, and the receiving end of the data packet is judged, so that the length of the effective data load carried by the message is variable.
Optionally, the transmission rate of the messages can be set arbitrarily according to the requirement, the transmission rate of each message is fixed, and the transmission rates of different messages can be different. It should be noted that, in the embodiment of the present application, the transmission rate of the message does not need to be pre-agreed between the sending end and the receiving end, the sending end may send the message according to the preset transmission rate in the message, and the receiving end may analyze the message waveform according to the transmission rate in the message.
Optionally, the payload of the signaling includes a cyclic redundancy check code with a plurality of bits, and specifically, the source bit of the signaling is formed by adding the cyclic redundancy check code with a plurality of bits to the payload corresponding to the transmission rate and the number of data packets.
The data is composed of data information to be transmitted, and in this embodiment of the present application, the data includes a plurality of data packets, and the number of the data packets may not be limited. The length of the payload corresponding to each data packet may be fixed, and the length of the payload carried by the packet is increased by accumulating a plurality of data packets.
Optionally, known data is filled between the signaling and the data and between a plurality of data packets comprised by the data.
The symbol length of the known data may be denoted as KNOWLEN, and optionally, the symbol length of the known data may be determined according to the transmission rate of the packet. Alternatively, the known data may be a pseudorandom sequence corresponding to a modulation mode of the message, for example, the modulation mode of the message is an MSK modulation mode, and the known data may be an MSK modulated pseudorandom sequence. The known data is used for channel tracking estimation and for channel equalization. The receiving end identifies the data packet by identifying the known data.
In this embodiment, as shown in fig. 3, the data is located after the signaling, and known data is set between the data and the signaling. Optionally, the signaling and data include a first packet of the plurality of packets filled with known data.
The network device sends the message to the receiving end, the receiving end receives the message, analyzes the signaling, and obtains the data packet number and the transmission rate from the signaling. Then, the receiving end can adaptively perform waveform recovery on the received message according to the transmission rate in the message, identify the data packets in the message according to the known data, and determine the number of the data packets to be received according to the number of the data packets. When the number of the received data packets corresponds to the number of the data packets, the message receiving is ended, and the receiving end can stop receiving.
In the embodiment of the application, the receiving end can automatically adapt to the messages with various transmission rates sent by the sending end, so that the self-adaptation of the transmission rate is realized.
The message structure of the message in the message transmission method provided by the embodiment of the application is as follows: the message structure enables the message transmission process to have the transmission rate self-adaption capability and achieves the purpose of variable payload length.
Referring to fig. 4, a flowchart of another message transmission method provided in an embodiment of the present application is shown, where the message transmission method may be applied to the network device shown in fig. 1, and the message transmission method includes:
in step 401, the network device obtains a payload of a signaling and a payload of each data packet.
In step 402, the network device performs target preprocessing on the payload of the signaling and the payload of each data packet, so as to obtain the signaling and each data packet.
In this embodiment, as shown in fig. 6, the network device needs to perform target preprocessing on signaling and each data packet, specifically: the network device performs target preprocessing on the payload of the signaling to obtain the signaling. The network device performs target preprocessing on the payloads of the data packets respectively to obtain the data packets.
Optionally, in an embodiment of the present application, as shown in fig. 5, the target preprocessing may include the following:
in step 501, the network device performs convolutional encoding on the target payload to obtain a convolved payload.
Wherein the target payload is the payload of the signaling or the payload of each data packet.
For ease of description, embodiments of the present application will be described with reference to a target payload as the signaling payload.
In this embodiment of the present application, assuming that the payload of the signaling is N bits, the network device may convolutionally encode the payload of the signaling to obtain a convolved payload, for example, the convolved payload is M bits.
Interleaving refers to the process of scrambling and reorganizing the convolved payloads according to a preset rule.
In this embodiment of the present application, the network device may interleave the convolved payload, and may obtain an interleaved payload, where the interleaved payload is still M bits.
In step 503, the network device performs orthogonal spreading on the interleaved payload, to obtain a spread payload.
Optionally, in the embodiment of the present application, the interleaved payload is orthogonally spread based on the walsh code.
Optionally, in the embodiment of the present application, the process that the network device performs orthogonal spreading on the interleaved payload may include: the network device obtains a preset spreading code length, for example, the spreading code length may be 32 bits, then divides the interleaved payload into a plurality of bit groups, and spreads each bit group according to a preset spreading rule, so that the length of the bit group after spreading is 32 bits. After each bit group is spread, each bit group after spreading is obtained by recombination, and the payload after spreading is obtained.
Alternatively, in the embodiment of the present application, the network device may perform multiple orthogonal spreading on the interleaved payload.
Optionally, in the embodiment of the present application, the process that the network device performs multiple orthogonal spreading on the interleaved payload may include: the network device may obtain the number of repetitions of orthogonal spreading, alternatively the number of repetitions of orthogonal spreading may be denoted as spradnum.
Then, the payload after interleaving is subjected to repeated frequency spreading treatment, and the process of each frequency spreading treatment can be as follows: the spreading code length is obtained and may alternatively be denoted WALASHLEN.
The interleaved payload (or the spread payload) is divided into a plurality of bit groups, each bit group is spread according to the spreading code length, and then the spread bit groups are combined to obtain the spread payload. The repetition number of the orthogonal spread spectrum is determined according to the transmission rate of the message.
In step 504, the network device adds a scrambling code to the spread payload to obtain a scrambled payload.
In this embodiment of the present application, when the payload after spreading is obtained through multiple spreading, the network device adds a scrambling code to the payload after last spreading of multiple spreading processes.
Alternatively, in the embodiment of the present application, the scrambling code may refer to a pseudo random sequence corresponding to the modulation direction of the packet.
In step 505, the network device modulates the scrambled payload to obtain a modulated payload.
Optionally, in this embodiment, the network device may modulate the payload after scrambling based on a minimum shift keying (MSK modulation mode) to obtain the modulated payload, and thus obtain the signaling in the packet.
Optionally, in the embodiment of the present application, as shown in fig. 6, the network device may further modulate the payload after scrambling based on a PSK (english: phase shift keying; chinese: phase shift keying) modulation method or a GMSK (english: gaussian Filtered Minimum Shift Keying; chinese: gaussian minimum shift keying) modulation method, to obtain a modulated payload.
It should be noted that, in the embodiment, when the target payload is the payload of the packet, the packet in the packet is obtained through the preprocessing of step 501-step 505.
The embodiment of the application combines the signaling and a plurality of data packets obtained by the coding technology, the interleaving technology, the spread spectrum technology and the modulation technology, and has strong noise resistance.
In step 403, the network device generates a message to be sent according to the synchronization header, the signaling, each data packet and the preset known data.
In this embodiment of the present application, the network device may form, according to a preset synchronization header, a message to be sent from a signaling obtained by target preprocessing, each data packet, and preset known data.
In the embodiment of the application, the target preprocessing mode of step 501-step 505 is adopted, the anti-Gaussian white noise performance of the obtained message is about 10dB higher than that of the prior art, and the error rate of the message waveform under the condition of Gaussian white noise-26 dB can be realized at the information transmission rate of 12byte/min and is less than 10 -5 . Therefore, the message structure provided by the embodiment of the application can prolong the communication distance and has strong noise immunity. Furthermore, the transmission rate of the message in the message transmission method can be self-adaptive, the waveform of the multi-speed rate can be selected, and the flexibility of communication is improved.
Referring to fig. 7, a block diagram of a packet transmission device provided in an embodiment of the present application is shown, where the packet transmission device may be configured in a network device in the implementation environment shown in fig. 1. As shown in fig. 7, the packet transmission device may include an acquisition module 701 and a sending module 702, where:
the obtaining module 701 is configured to obtain a message to be sent, where the message includes a synchronization header, a signaling, and data, the data includes a plurality of data packets, the signaling includes a transmission rate of the message and a number of data packets of the plurality of data packets, and known data is filled between the signaling and the data and between the plurality of data packets included in the data;
the sending module 702 is configured to send a packet to a receiving end, so that the receiving end obtains a plurality of data packets in the packet according to the number of data packets and the transmission rate.
In one embodiment of the present application, the obtaining module 701 is further configured to obtain a payload of the signaling and a payload of each data packet; respectively carrying out target preprocessing on the effective load of the signaling and the effective load of each data packet to obtain the signaling and each data packet; and generating a message to be transmitted according to the synchronous header, the signaling, each data packet and preset known data.
In one embodiment of the present application, the obtaining module 701 is further configured to convolutionally encode a target payload, where the target payload is a signaling payload or a payload of each data packet, to obtain a convolved payload; interleaving the convolved payloads to obtain interleaved payloads; orthogonal spreading is carried out on the interweaved effective load, and the effective load after spreading is obtained; scrambling codes are added to the payload after the spread spectrum, and the payload after the scrambling codes is obtained; and modulating the scrambled payload to obtain a modulated payload.
In one embodiment of the present application, the obtaining module 701 is further configured to determine the repetition number of the orthogonal spreading according to the transmission rate; and performing repeated frequency spreading treatment on the interleaved payload to obtain the spread payload.
In one embodiment of the present application, the obtaining module 701 is further configured to perform orthogonal spreading on the interleaved payload based on the walsh code.
In one embodiment of the present application, the obtaining module 701 is further configured to modulate the scrambled payload based on a minimum frequency shift keying technique.
In one embodiment of the present application, the known data includes a pseudo random sequence corresponding to a minimum frequency shift keying technique.
In one embodiment of the present application, the length of the known data is determined based on the transmission rate.
In one embodiment of the present application, the synchronization header includes a pseudo random sequence corresponding to a minimum frequency shift keying technique.
In one embodiment of the present application, the payload of the signaling includes a cyclic redundancy check code (English, cyclic Redundancy Check; CRC).
For specific limitations of the message transmission device, reference may be made to the above limitations of the message transmission method, and no further description is given here. The modules in the message transmission device can be implemented in whole or in part by software, hardware and a combination thereof. The above modules may be embedded in hardware or may be independent of a processor in the computer device, or may be stored in software in a memory in the computer device, so that the processor may call and execute operations corresponding to the above modules.
In one embodiment of the present application, a computer device is provided, which may be a server, and an internal structure thereof may be as shown in fig. 8. The computer device includes a processor, a memory, and a database connected by a system bus. Wherein the processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage media. The database may be used for a plurality of transmission rates preset, and the computer program when executed by the processor is used for realizing a message transmission method.
It will be appreciated by those skilled in the art that the structure shown in fig. 8 is merely a block diagram of some of the structures associated with the present application and is not limiting of the computer device to which the present application may be applied, and that a particular computer device may include more or fewer components than shown, or may combine certain components, or have a different arrangement of components.
In one embodiment of the present application, there is provided a computer device comprising a memory and a processor, the memory storing a computer program, the processor when executing the computer program implementing the steps of:
obtaining a message to be sent, wherein the message comprises a synchronous header, a signaling and data, the data comprises a plurality of data packets, the signaling comprises the transmission rate of the message and the number of the data packets of the plurality of data packets, and known data are filled between the signaling and the data and among the plurality of data packets of the data; and sending the message to the receiving end so that the receiving end obtains a plurality of data packets in the message according to the number of the data packets and the transmission rate.
In one embodiment of the present application, the processor when executing the computer program further performs the steps of: acquiring a payload of a signaling and a payload of each data packet; respectively carrying out target preprocessing on the effective load of the signaling and the effective load of each data packet to obtain the signaling and each data packet; and generating a message to be transmitted according to the synchronous header, the signaling, each data packet and preset known data.
In one embodiment of the present application, the processor when executing the computer program further performs the steps of: convolutionally encoding a target payload to obtain a convolved payload, wherein the target payload is a signaling payload or a payload of each data packet; interleaving the convolved payloads to obtain interleaved payloads; orthogonal spreading is carried out on the interweaved effective load, and the effective load after spreading is obtained; scrambling codes are added to the payload after the spread spectrum, and the payload after the scrambling codes is obtained; and modulating the scrambled payload to obtain a modulated payload.
In one embodiment of the present application, the processor when executing the computer program further performs the steps of: determining the repetition times of the orthogonal spread spectrum according to the transmission rate; and performing repeated frequency spreading treatment on the interleaved payload to obtain the spread payload.
In one embodiment of the present application, the processor when executing the computer program further performs the steps of: the interleaved payloads are orthogonally spread based on the walsh codes.
In one embodiment of the present application, the processor when executing the computer program further performs the steps of: the scrambled payload is modulated based on a minimum frequency shift keying technique.
In one embodiment of the present application, the processor when executing the computer program further performs the steps of: the known data comprises a pseudo-random sequence corresponding to a minimum frequency shift keying technique.
In one embodiment of the present application, the processor when executing the computer program further performs the steps of: the length of the known data is determined based on the transmission rate.
In one embodiment of the present application, the processor when executing the computer program further performs the steps of: the synchronization header includes a pseudo-random sequence corresponding to a minimum frequency shift keying technique.
In one embodiment of the present application, the processor when executing the computer program further performs the steps of: the payload of the signaling includes a cyclic redundancy check code of several bits.
The computer device provided in the embodiments of the present application has similar implementation principles and technical effects to those of the above method embodiments, and will not be described herein.
In one embodiment of the present application, a computer readable storage medium is provided having a computer program stored thereon, which when executed by a processor, performs the steps of:
obtaining a message to be sent, wherein the message comprises a synchronous header, a signaling and data, the data comprises a plurality of data packets, the signaling comprises the transmission rate of the message and the number of the data packets of the plurality of data packets, and known data are filled between the signaling and the data and among the plurality of data packets of the data; and sending the message to the receiving end so that the receiving end obtains a plurality of data packets in the message according to the number of the data packets and the transmission rate.
In one embodiment of the present application, the computer program may further implement the following steps when executed by a processor: acquiring a payload of a signaling and a payload of each data packet; respectively carrying out target preprocessing on the effective load of the signaling and the effective load of each data packet to obtain the signaling and each data packet; and generating a message to be transmitted according to the synchronous header, the signaling, each data packet and preset known data.
In one embodiment of the present application, the computer program may further implement the following steps when executed by a processor: convolutionally encoding a target payload to obtain a convolved payload, wherein the target payload is a signaling payload or a payload of each data packet; interleaving the convolved payloads to obtain interleaved payloads; orthogonal spreading is carried out on the interweaved effective load, and the effective load after spreading is obtained; scrambling codes are added to the payload after the spread spectrum, and the payload after the scrambling codes is obtained; and modulating the scrambled payload to obtain a modulated payload.
In one embodiment of the present application, the computer program may further implement the following steps when executed by a processor: determining the repetition times of the orthogonal spread spectrum according to the transmission rate; and performing repeated frequency spreading treatment on the interleaved payload to obtain the spread payload.
In one embodiment of the present application, the computer program may further implement the following steps when executed by a processor: the interleaved payloads are orthogonally spread based on the walsh codes.
In one embodiment of the present application, the computer program may further implement the following steps when executed by a processor: the scrambled payload is modulated based on a minimum frequency shift keying technique.
In one embodiment of the present application, the computer program may further implement the following steps when executed by a processor: the known data comprises a pseudo-random sequence corresponding to a minimum frequency shift keying technique.
In one embodiment of the present application, the computer program may further implement the following steps when executed by a processor: the length of the known data is determined based on the transmission rate.
In one embodiment of the present application, the computer program may further implement the following steps when executed by a processor: the synchronization header includes a pseudo-random sequence corresponding to a minimum frequency shift keying technique.
In one embodiment of the present application, the computer program may further implement the following steps when executed by a processor: the payload of the signaling includes a cyclic redundancy check code of several bits.
The computer readable storage medium provided in the embodiments of the present application has similar principles and technical effects to those of the above method embodiments, and will not be described herein.
Those skilled in the art will appreciate that implementing all or part of the above described methods may be accomplished by way of a computer program stored on a non-transitory computer readable storage medium, which when executed, may comprise the steps of the embodiments of the methods described above. Any reference to memory, storage, database, or other medium used in the various embodiments provided herein may include non-volatile and/or volatile memory. The nonvolatile memory can include Read Only Memory (ROM), programmable ROM (PROM), electrically Programmable ROM (EPROM), electrically Erasable Programmable ROM (EEPROM), or flash memory. Volatile memory can include Random Access Memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms such as Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double Data Rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous Link DRAM (SLDRAM), memory bus direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM), among others.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples only represent a few embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the claims. It should be noted that it would be apparent to those skilled in the art that various modifications and improvements could be made without departing from the spirit of the present application, which would be within the scope of the present application. Accordingly, the scope of protection of the present application is to be determined by the claims appended hereto.
Claims (10)
1. A method for transmitting a message, the method comprising:
acquiring a message to be sent, wherein the message comprises a synchronous header, a signaling and data, the data comprises a plurality of data packets, the signaling comprises the transmission rate of the message and the number of the data packets of the plurality of data packets, and known data are filled between the signaling and the data and among the plurality of data packets included in the data;
the message is sent to a receiving end, so that the receiving end obtains the data packets in the message according to the data packet number and the transmission rate;
the obtaining the message to be sent includes:
acquiring the effective load of the signaling and the effective load of each data packet; respectively carrying out target preprocessing on the effective load of the signaling and the effective load of each data packet to obtain the signaling and each data packet; generating the message to be sent according to the synchronous header, the signaling, each data packet and the preset known data;
the target pretreatment comprises:
convolutionally encoding a target payload to obtain a convolved payload, wherein the target payload is the payload of the signaling or the payload of each data packet; interleaving the convolved payloads to obtain interleaved payloads; performing orthogonal spread spectrum on the interweaved effective load to obtain a spread effective load; scrambling codes are added to the payload after the spread spectrum, and the payload after the scrambling codes is obtained; modulating the scrambled payload to obtain a modulated payload;
the orthogonal spreading is carried out on the payload after interleaving to obtain the payload after spreading, and the method comprises the following steps:
determining the repetition number of the orthogonal spread spectrum according to the transmission rate; and performing spread spectrum processing on the interleaved payload for the repeated times to obtain the spread payload.
2. The method of claim 1, wherein said orthogonally spreading said interleaved payloads comprises:
and carrying out orthogonal spread spectrum on the payload after interleaving based on the Walsh code.
3. The method of claim 1, wherein modulating the scrambled payload comprises:
and modulating the scrambled payload based on a minimum frequency shift keying technology.
4. A method according to claim 3, wherein the known data comprises a pseudo random sequence corresponding to the minimum frequency shift keying technique.
5. The method of claim 1, wherein the length of the known data is determined based on the transmission rate.
6. A method according to claim 3, wherein the synchronization header comprises a pseudo random sequence corresponding to the minimum frequency shift keying technique.
7. The method of claim 1, wherein the payload of the signaling comprises a cyclic redundancy check code of a plurality of bits.
8. A message transmission apparatus, the apparatus comprising:
the device comprises an acquisition module, a transmission module and a transmission module, wherein the acquisition module is used for acquiring a message to be transmitted, the message comprises a synchronous header, a signaling and data, the data comprises a plurality of data packets, the signaling comprises the transmission rate of the message and the number of the data packets of the plurality of data packets, and known data is filled between the signaling and the data and between the signaling and the plurality of data packets of the data;
the sending module is used for sending the message to a receiving end so that the receiving end can acquire the data packets in the message according to the data packet number and the transmission rate;
the acquisition module is further configured to acquire a payload of the signaling and a payload of each data packet; respectively carrying out target preprocessing on the effective load of the signaling and the effective load of each data packet to obtain the signaling and each data packet; generating the message to be sent according to the synchronous header, the signaling, each data packet and the preset known data;
the acquisition module is further configured to convolutionally encode a target payload to obtain a convolved payload, where the target payload is a payload of the signaling or a payload of each data packet; interleaving the convolved payloads to obtain interleaved payloads; performing orthogonal spread spectrum on the interweaved effective load to obtain a spread effective load; scrambling codes are added to the payload after the spread spectrum, and the payload after the scrambling codes is obtained; modulating the scrambled payload to obtain a modulated payload;
the acquisition module is further used for determining the repetition times of the orthogonal spread spectrum according to the transmission rate; and performing spread spectrum processing on the interleaved payload for the repeated times to obtain the spread payload.
9. A computer device comprising a memory and a processor, the memory storing a computer program, characterized in that the processor implements the steps of the method of any of claims 1 to 7 when the computer program is executed.
10. A computer readable storage medium, on which a computer program is stored, characterized in that the computer program, when being executed by a processor, implements the steps of the method of any of claims 1 to 7.
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