CN117938578A - Signal transmission method, signal transmission device, communication equipment, electronic equipment and storage medium - Google Patents

Abstract

The disclosure relates to the technical field of communication, and in particular relates to a signal transmission method, a signal transmission device, communication equipment, electronic equipment and a storage medium. According to the technical scheme provided by the embodiment of the disclosure, a communication node in a multimode communication network determines a signal transmission mode used when the communication node transmits signals with an opposite end communication node according to a preset rule by acquiring a link type of a link between the communication node and the opposite end communication node and according to the link type and a signal transmission direction, wherein at least one of different combinations of the link type and the signal transmission direction uses a signal transmission mode different from other combinations, and finally the signal transmission mode is used to transmit signals with the opposite end communication node in the signal transmission direction of the link. Therefore, flexible waveform configuration is realized in the multimode communication network, and the power amplification efficiency of the power amplifier is maximized, so that the improvement of communication performance is realized.

Description

Signal transmission method, signal transmission device, communication equipment, electronic equipment and storage medium

Technical Field

The disclosure relates to the technical field of communication, and in particular relates to a signal transmission method, a signal transmission device, communication equipment, electronic equipment and a storage medium.

Background

Power line communication (Power Line Communication, abbreviated as PLC) technology, also known as "power line carrier communication technology", refers to, according to the definition in GB/T31983.31: the technology is used for modulating information data onto a proper carrier frequency, and carrying out data transmission by taking a power line as a physical medium, so as to realize communication or control between data terminals.

High-speed power line carrier communication (High Power Line Communication, abbreviated as HPLC) is one of power line carrier communication technologies, which is a broadband power line carrier communication technology for performing data transmission on a low-voltage power line, and is mostly used in local communication of a low-voltage power consumption collection system of a transformer area. Compared with the traditional low-speed narrow-band power line carrier technology, the HPLC technology has the advantages of large bandwidth and high transmission rate, and can meet the higher requirements of the power line carrier communication on performance. HPLC has the disadvantage of serious attenuation of the power line carrier signal, and irregular power line load and noise interference, which in some cases results in failure of networking communication.

The High-speed Radio Frequency (HRF) technology is an electromagnetic wave communication technology, is widely applied in the communication field, and has the characteristics of long communication distance, strong anti-interference capability, high communication speed and strong real-time performance. By adopting an HPLC+HRF dual-mode communication mode combining an HPLC technology and an HRF technology, advantages of the HPLC and the HRF dual-mode communication mode can be effectively complemented, signal data in a power system can be transmitted reliably at a high speed, and therefore the smart power grid construction is met. The HPLC+HRF dual-mode communication can automatically integrate networking, so that networking is more flexible. In addition, in some special application scenes with low real-time performance and low data volume, partial service equipment and sensors need to be powered by batteries and cannot adopt an HPLC communication mode, so that the method is more suitable for realizing service application by adopting an HPLC+HRF dual-mode communication mode.

In general, in order to resist signal fading in a channel transmission process in a signal transmission process of a communication system, power of a signal is amplified to a certain extent through a power amplifier, so that signal quality received by a receiving end is not too poor, correct demodulation and decoding of the received signal are realized, and stable performance of the communication system is ensured. For example: the power amplifier may be used to power amplify the transmitted signal before the uplink signal is transmitted, or may be used to suppress noise and amplify power during the downlink signal reception.

When a power amplifier is used to power amplify a signal, linear power amplification of the signal is required, i.e. the waveform of the signal is not changed, so as to avoid nonlinear distortion of the signal. For example: the time domain waveform of the signal is amplified by K times fixedly, so that the whole waveform of the signal is not changed; however, if the respective parts of the signal (which may be time domain or frequency domain) are amplified by different factors, the overall waveform after the signal is power amplified is inconsistent with the previous one (this phenomenon is called signal distortion or signal nonlinear distortion), which affects the subsequent demodulation performance and leads to demodulation errors and communication failure. Therefore, in order to ensure linear power amplification of the signal, the power of the input signal to the power amplifier is required to be in the linear power amplifier region shown in fig. 1. If the partial power of the input signal is too high, reaching the saturation region, the power amplification no longer exhibits linear amplification, and nonlinear distortion of the signal as described above occurs.

In the existing hplc+hrf dual-mode communication, only transmission and reception of data based on signal waveforms of orthogonal frequency division multiplexing (Orthogonal Frequency Division Multiplexing, abbreviated as OFDM) are supported at present, and taking signal transmission as an example, a specific OFDM processing flow is shown in fig. 2, namely: the data bits after channel coding and modulation can be regarded as frequency domain signals after serial-parallel conversion and constellation mapping. The modulation symbols are then mapped onto subcarriers and the frequency domain signals on the parallel subcarriers are converted to the time domain by an Inverse Fast Fourier Transform (IFFT). Before modulating the time domain signals to the carrier wave, a Cyclic Prefix (CP) is inserted before each OFDM signal, and finally the OFDM signals are subjected to parallel-serial conversion and carrier wave modulation, power amplification by a power amplifier and then transmitted.

When the signal is transmitted using an OFDM waveform, the time-domain aliasing signal x (t) is a superposition of a plurality of different amplitude, different sinusoidal signals, which can be expressed as follows:

......（1）

Where N represents the number of subcarriers, k represents the kth subcarrier, Representing the modulation symbol carried on the kth subcarrier, j representing the imaginary number (/ >)），/>Representing subcarrier spacing, for example: 15KHz.

As can be seen from the combination of equation (1), the time-domain aliasing combined signalsWhen the ratio PAPR of peak power to average power is too large, the power fluctuation is too large, and the ratio PAPR exceeds the linear power amplification area of the power amplifier, so that the signal distortion after the power amplification is caused, and the communication performance of the system is further affected.

From this, the current hplc+hrf dual-mode communication does not fully consider the influence on PA efficiency and communication performance when the PAPR of the OFDM waveform is high, and thus cannot maximize the power amplification efficiency of the power amplifier and avoid the distortion of the nonlinear power amplifier of the signal.

Disclosure of Invention

In order to solve the problems in the related art, embodiments of the present disclosure provide a signal transmission method, apparatus, communication device, electronic device, and storage medium.

In a first aspect, an embodiment of the present disclosure provides a signal transmission method, which is applied to communication nodes in a multimode communication network, where the communication nodes in the multimode communication network use at least two links and at least two signal transmission modes for communication, and the method includes:

Acquiring the link type of a link between the communication node and the opposite-end communication node;

Determining a signal transmission mode used when the communication node and the opposite-end communication node transmit signals according to the link type and the signal transmission direction according to a preset rule, wherein at least one of different combinations of the link type and the signal transmission direction uses a signal transmission mode different from other combinations;

and transmitting signals with the opposite-end communication node in the signal transmission direction of the link by using the signal transmission mode.

According to an embodiment of the disclosure, the determining, according to the link type and the signal transmission direction, a signal transmission manner used when the communication node and the peer communication node transmit signals includes:

Among the at least two signal transmission modes, a signal transmission mode is selected which enables a lower ratio of peak power to average power of a transmission signal when transmitting signals in the signal transmission direction of the link, so that signal nonlinear distortion introduced when power increases is smaller.

According to embodiments of the present disclosure: the link types comprise a high-speed power line carrier communication (HPLC) link and a high-speed wireless communication (HRF) link;

The signal transmission direction comprises uplink and downlink;

the signal transmission mode comprises Orthogonal Frequency Division Multiplexing (OFDM) and spread spectrum orthogonal frequency division multiplexing (DFT-S-OFDM) based on discrete Fourier transform.

According to an embodiment of the present disclosure, the preset rule includes:

When the link type is an HRF link and the signal transmission direction is uplink, DFT-S-OFDM is used; and/or

When the link type is HPLC link and the signal transmission direction is uplink, DFT-S-OFDM is used.

According to an embodiment of the present disclosure, the preset rule includes:

when the link type is an HPLC link and the signal transmission direction is uplink or downlink, OFDM is used;

When the link type is an HRF link and the signal transmission direction is uplink or downlink, DFT-S-OFDM is used.

According to an embodiment of the present disclosure, the preset rule includes:

when the link type is an HPLC link and the signal transmission direction is uplink or downlink, OFDM is used;

when the link type is an HRF link and the signal transmission direction is uplink, DFT-S-OFDM is used;

when the link type is an HRF link and the signal transmission direction is downlink, OFDM is used.

According to an embodiment of the present disclosure, the preset rule includes:

when the link type is an HPLC link and the signal transmission direction is up, DFT-S-OFDM is used;

When the link type is an HPLC link and the signal transmission direction is downlink, OFDM is used;

when the link type is an HRF link and the signal transmission direction is uplink, DFT-S-OFDM is used;

when the link type is an HRF link and the signal transmission direction is downlink, OFDM is used.

According to an embodiment of the present disclosure, the preset rules are known to the communication node and the peer communication node.

According to an embodiment of the disclosure, the communication node is a master node and the peer communication node is a slave node.

According to an embodiment of the present disclosure, the method further comprises:

And sending a first indication signaling to the opposite-end communication node, wherein the first indication signaling comprises a first preset field for indicating the preset rule.

According to an embodiment of the present disclosure, the first preset field is 1 bit, when the first preset field is empty, the preset rule is a first preset rule, when the first preset field is 0, the preset rule is a second preset rule, and when the first preset field is 1, the preset rule is a third preset rule.

According to an embodiment of the present disclosure, the number of bits of the first preset field is,/>And the representation is rounded upwards, and N is the number of preset rules.

According to an embodiment of the present disclosure, the first indication signaling is transmitted in a broadcast channel or carried through a synchronization signal sequence.

According to an embodiment of the present disclosure, the method further comprises:

And sending a second indication signaling to the opposite-end communication node, wherein the second indication signaling comprises a second preset field for indicating the signal transmission mode.

According to an embodiment of the present disclosure, the method further comprises:

acquiring channel quality parameters of a designated signal transmission direction on a link between the opposite-end communication node and the opposite-end communication node;

And when the channel quality parameter meets a preset condition, changing a signal transmission mode in the signal transmission direction of the link.

According to an embodiment of the present disclosure, the channel quality parameter comprises a combination of any one or more of the following: the transmission accuracy, the retransmission times, the ratio PAPR of the peak power to the average power of the signals in the signal transmission direction of the link, and the transmission delay.

According to an embodiment of the present disclosure, when the signal transmission mode is OFDM and the channel quality parameter indicates that the channel quality is lower than a preset channel quality, the signal transmission mode is changed to DFT-S-OFDM;

and when the signal transmission mode is DFT-S-OFDM and the channel quality parameter indicates that the channel quality is higher than the preset channel quality, changing the signal transmission mode into OFDM.

According to an embodiment of the present disclosure, wherein:

Preset conditions corresponding to different link types are different; or alternatively

The preset conditions corresponding to the combination of different link types and signal transmission directions are different.

According to an embodiment of the disclosure, the communication node is a slave node, and the peer communication node is a master node.

According to an embodiment of the present disclosure, the method further comprises:

Receiving a first indication signaling or a second indication signaling sent by the opposite-end communication node, wherein the first indication signaling comprises a first preset field for indicating the preset rule, and the second indication signaling comprises a second preset field for indicating the signal transmission mode;

and transmitting signals with the opposite communication node in the signal transmission direction of the link by using a signal transmission mode corresponding to the preset rule in the first preset field or using a signal transmission mode indicated by the second preset field.

According to an embodiment of the present disclosure, the signal transmission manner indicated by the second preset field is determined by the peer communication node according to a channel quality parameter in the signal transmission direction of the link, where when the channel quality parameter meets a preset condition, a current signal transmission manner in the signal transmission direction of the link is changed.

In a second aspect, in an embodiment of the present disclosure, a signal transmission method is provided, which is applied to a communication node in a multimode communication network, where communication is performed between communication nodes in the multimode communication network by using at least two links and at least two signal transmission modes, and the method includes:

Acquiring channel quality parameters of a designated signal transmission direction on a link between the opposite-end communication node and the opposite-end communication node;

When the channel quality parameter meets a preset condition, changing a signal transmission mode in the signal transmission direction of the link;

And sending a second indication signaling to the opposite-end communication node, wherein the second indication signaling comprises a second preset field, and the second preset field is used for indicating a signal transmission mode in a designated signal transmission direction of a link between the second preset field and the opposite-end communication node.

According to an embodiment of the present disclosure, the channel quality parameter comprises a combination of any one or more of the following: the transmission accuracy, the retransmission times, the ratio PAPR of the peak power to the average power of the signals in the signal transmission direction of the link, and the transmission delay.

According to embodiments of the present disclosure:

When the signal transmission mode is OFDM and the channel quality parameter indicates that the channel quality is lower than the preset channel quality, changing the signal transmission mode into DFT-S-OFDM;

and when the signal transmission mode is DFT-S-OFDM and the channel quality parameter indicates that the channel quality is higher than the preset channel quality, changing the signal transmission mode into OFDM.

According to an embodiment of the present disclosure, wherein:

Preset conditions corresponding to different link types are different; or alternatively

The preset conditions corresponding to the combination of different link types and signal transmission directions are different.

According to an embodiment of the present disclosure, the signal transmission manner indicated by the second preset field is determined by the peer communication node according to a channel quality parameter in the signal transmission direction of the link, where when the channel quality parameter meets a preset condition, a current signal transmission manner in the signal transmission direction of the link is changed.

According to an embodiment of the disclosure, the communication node is a master node, and the peer communication node is a slave node; or the communication node is a slave node, and the opposite end node is a master node.

In a third aspect, an embodiment of the present disclosure provides a signal transmission method, which is applied to a communication node in a multimode communication network, where communication is performed between communication nodes in the multimode communication network by using at least two links and at least two signal transmission modes, and the method includes:

Receiving a second indication signaling sent by an opposite-end communication node, wherein the second indication signaling comprises a second preset field, and the second preset field is used for indicating a signal transmission mode in a designated signal transmission direction of a link between the second preset field and the opposite-end communication node;

And the signal transmission mode indicated by the second indication signaling is used in the designated signal transmission direction of the link between the opposite-end communication node.

According to an embodiment of the disclosure, the communication node is a slave node, and the opposite-end communication node is a master node; or the communication node is a slave node, and the opposite end node is a master node.

In a fourth aspect, in an embodiment of the present disclosure, there is provided a signal transmission device, which is disposed in a communication node in a multimode communication network, where the communication nodes in the multimode communication network communicate by using at least two links and at least two signal transmission modes, and the device at least includes:

A link type acquisition module configured to acquire a link type of a link between the communication node and a peer communication node;

The signal transmission mode determining module is configured to determine a signal transmission mode used when the communication node and the opposite-end communication node transmit signals according to the link type and the signal transmission direction according to a preset rule, wherein at least one of different combinations of the link type and the signal transmission direction uses a signal transmission mode different from other combinations;

and the communication execution module is configured to transmit signals with the opposite-end communication node in the signal transmission direction of the link by using the signal transmission mode.

According to an embodiment of the present disclosure, the apparatus further comprises:

The signal transmission mode changing module is configured to acquire channel quality parameters of a designated signal transmission direction on a link between the signal transmission mode changing module and the opposite-end communication node; and when the channel quality parameter meets a preset condition, changing a signal transmission mode in the signal transmission direction of the link.

According to an embodiment of the present disclosure, the apparatus further comprises:

A first indication signaling sending module configured to send a first indication signaling to the peer communication node, where the first indication signaling includes a first preset field for indicating the preset rule;

And/or the number of the groups of groups,

And the second instruction signaling sending module is configured to send a second instruction signaling to the opposite-end communication node, wherein the second instruction signaling comprises a second preset field for indicating the signal transmission mode.

According to an embodiment of the present disclosure, the apparatus further comprises:

The first indication signaling receiving module is configured to receive a first indication signaling sent by the opposite-end communication node, wherein the first indication signaling comprises a first preset field for indicating the preset rule; transmitting signals with the opposite-end communication node in the signal transmission direction of the link by using a signal transmission mode corresponding to the preset rule in the first preset field;

And/or the number of the groups of groups,

The second instruction signaling receiving module is configured to receive a second instruction signaling sent by the opposite-end communication node, wherein the second instruction signaling comprises a second preset field for indicating the signal transmission mode; and transmitting signals with the opposite-end communication node in the signal transmission direction of the link by using the signal transmission mode indicated by the second preset field.

According to an embodiment of the present disclosure, when the signal transmission mode is OFDM and the channel quality parameter indicates that the channel quality is lower than a preset channel quality, the signal transmission mode is changed to DFT-S-OFDM;

and when the signal transmission mode is DFT-S-OFDM and the channel quality parameter indicates that the channel quality is higher than the preset channel quality, changing the signal transmission mode into OFDM.

In a fifth aspect, in an embodiment of the present disclosure, there is provided a signal transmission apparatus, which is disposed in a communication node in a multimode communication network, where the communication nodes in the multimode communication network communicate using at least two links and at least two signal transmission modes, and the apparatus at least includes:

The system comprises a channel quality parameter acquisition module, a channel quality parameter acquisition module and a communication module, wherein the channel quality parameter acquisition module is configured to acquire channel quality parameters of a designated signal transmission direction on a link between the channel quality parameter acquisition module and an opposite-end communication node;

A signal transmission mode changing module configured to change a signal transmission mode in the signal transmission direction of the link when the channel quality parameter satisfies a preset condition;

The second instruction signaling sending module is configured to send a second instruction signaling to the opposite-end communication node, wherein the second instruction signaling comprises a second preset field, and the second preset field is used for indicating a signal transmission mode in a designated signal transmission direction of a link between the second instruction signaling and the opposite-end communication node.

According to an embodiment of the present disclosure, when the signal transmission mode is OFDM and the channel quality parameter indicates that the channel quality is lower than a preset channel quality, the signal transmission mode is changed to DFT-S-OFDM;

and when the signal transmission mode is DFT-S-OFDM and the channel quality parameter indicates that the channel quality is higher than the preset channel quality, changing the signal transmission mode into OFDM.

In a sixth aspect, in an embodiment of the present disclosure, there is provided a signal transmission apparatus, which is disposed in a communication node in a multimode communication network, where the communication nodes in the multimode communication network communicate using at least two links and at least two signal transmission modes, and the apparatus at least includes:

The second instruction signaling receiving module is configured to receive a second instruction signaling sent by the opposite-end communication node, wherein the second instruction signaling comprises a second preset field, and the second preset field is used for indicating a signal transmission mode in a designated signal transmission direction of a link between the second instruction signaling and the opposite-end communication node; and the signal transmission mode indicated by the second indication signaling is used in the designated signal transmission direction of the link between the opposite-end communication node.

In a seventh aspect, embodiments of the present disclosure provide a communication apparatus, where the communication apparatus includes at least the signal processing device of the fourth aspect, the fifth aspect, or the sixth aspect.

In an eighth aspect, an electronic device is provided in an embodiment of the disclosure, including a memory and a processor; wherein the memory is for storing one or more computer instructions, wherein the one or more computer instructions are executed by the processor to implement the method steps of the first, second or third aspects.

In a ninth aspect, embodiments of the present disclosure provide a computer readable storage medium having stored thereon computer instructions which, when executed by a processor, implement the method steps of the first, second or third aspects.

According to the technical scheme provided by the embodiment of the disclosure, a communication node in a multimode communication network determines a signal transmission mode used when the communication node transmits signals with an opposite end communication node according to a preset rule by acquiring a link type of a link between the communication node and the opposite end communication node and according to the link type and a signal transmission direction, wherein at least one of different combinations of the link type and the signal transmission direction uses a signal transmission mode different from other combinations, and finally the signal transmission mode is used to transmit signals with the opposite end communication node in the signal transmission direction of the link. On the one hand, the signal transmission mode used when the communication node communicates with the opposite-end communication node is determined based on a preset rule, the link type and the signal transmission direction, and the signal transmission modes used by the signal transmission directions of the links are not completely the same, so that the signal transmission modes suitable for the signal transmission directions of the links can be selected by combining the requirements and the characteristics of signals under different link types and different signal transmission directions in a multimode communication network (such as an HPLC (high performance liquid chromatography) and HRF (high performance liquid chromatography) dual-mode communication network) and the functional characteristics of different communication nodes, and flexible waveform configuration is realized in the multimode communication network; on the other hand, when a signal transmission mode (such as DFT-S-OFDM) with lower peak power and average power ratio of a transmitted signal and smaller signal nonlinear distortion introduced when power is increased is selected from the at least two signal transmission modes to transmit signals in the signal transmission direction of the link, the power amplification efficiency of the power amplifier is maximized, and further the improvement of communication performance is realized.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

Other features, objects and advantages of the present disclosure will become more apparent from the following detailed description of non-limiting embodiments, taken in conjunction with the accompanying drawings. In the drawings:

FIG. 1 shows a schematic diagram of a prior art linear transformation using a power amplifier for power amplification;

FIG. 2 is a schematic diagram of an OFDM processing flow during signal transmission in the prior art;

FIG. 3 is a schematic diagram of a DFT-S-OFDM processing flow during signal transmission in the prior art;

Fig. 4 shows a flowchart of a signal processing method according to embodiment 1 of the present disclosure;

fig. 5 shows a flowchart of a signal processing method according to embodiment 2 of the present disclosure;

fig. 6 shows a flowchart of a signal processing method according to embodiment 3 of the present disclosure;

fig. 7 shows a flowchart of a signal processing method according to embodiment 4 of the present disclosure;

fig. 8 shows a flowchart of a signal processing method according to embodiment 5 of the present disclosure;

fig. 9 shows a block diagram of a signal transmission device according to an embodiment of the present disclosure;

fig. 10 is a schematic structural connection diagram of a signal transmission device in embodiment 1;

Fig. 11 is a schematic structural connection diagram of a signal transmission device in embodiment 2;

fig. 12 is a schematic structural connection diagram of a signal transmission device in embodiment 3;

Fig. 13 is a schematic structural connection diagram of a signal transmission device in embodiment 4;

fig. 14 shows a block diagram of another signal transmission device according to an embodiment of the present disclosure;

fig. 15 shows a block diagram of a further signal transmission device according to an embodiment of the present disclosure;

Fig. 16 shows a block diagram of an electronic device according to an embodiment of the disclosure.

Detailed Description

Hereinafter, exemplary embodiments of the present disclosure will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily implement them. In addition, for the sake of clarity, portions irrelevant to description of the exemplary embodiments are omitted in the drawings.

In this disclosure, it should be understood that terms such as "comprises" or "comprising," etc., are intended to indicate the presence of features, numbers, steps, acts, components, portions, or combinations thereof disclosed in this specification, and are not intended to exclude the possibility that one or more other features, numbers, steps, acts, components, portions, or combinations thereof are present or added.

In addition, it should be noted that, without conflict, the embodiments of the present disclosure and features of the embodiments may be combined with each other. The present disclosure will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

In an HPLC and HRF dual-mode communication network, a multi-level association tree network is typically formed in which a Central Controller (CCO) is used as a central node, a Proxy Controller (PCO) is used as a proxy node, and All Stations (STAs) are connected. For the concepts of uplink and downlink transmission, it is generally considered that transmission from a station STA to CCO or PCO, transmission from PCO to CCO is uplink, transmission from CCO or PCO to station STA, and transmission from CCO to PCO is downlink.

As described above, in the HPLC and HRF dual-mode communication network of the related art, only transmission and reception of data based on OFDM waveforms are supported. OFDM technology has many advantages, such as: the OFDM signal is formed by adding a plurality of independent modulated subcarrier signals, and the synthesized signal can generate relatively large peak power, namely, the peak-to-average power ratio (PAPR) is very high, so that the efficiency of the power amplifier is reduced, and meanwhile, the signal after the power amplifier is distorted.

The inventors of the present disclosure noted during the project development process: in order to reduce the effect of high PAPR, OFDM with PAPR reduction (e.g., subcarrier reservation, clipping) is generally used in the existing OFDM communication system to improve the efficiency of power amplification. But the PAPR is reduced while introducing an error vector magnitude (Error Vector Magnitude, EVM). The larger the threshold T used in reducing the PAPR, the smaller the EVM and vice versa. The smaller the EVM, the better the performance. The larger the threshold T used in the PAPR reduction is, the better the PAPR reduction effect is. Therefore, in the prior art, there is a contradiction between the PAPR reduction and the EVM reduction when the signal quality control is performed, so the signal quality control effect is not good.

In addition, the inventors of the present disclosure also noted: there is currently an improved OFDM technique, namely: spread spectrum orthogonal frequency division multiplexing (Discrete Fourier Transform-Spread-Orthogonal Frequency Division Multiplexing, DFT-S-OFDM) based on a discrete fourier transform. Unlike the above-described processing flow of OFDM on signals, DFT-S-OFDM first uses DFT transformation on signals to obtain frequency domain signals before performing IFFT modulation, and then converts the frequency domain signals into time domain signals through IFFT, or takes signal transmission as an example, and a specific DFT-S-OFDM processing flow is shown in fig. 3. DFT-S-OFDM may improve PAPR values enabling the power amplifier to operate more efficiently.

In order to solve the problem that the high PAPR in the HPLC and HRF dual-mode communication network reduces the power amplification efficiency and causes signal distortion after power amplification, the present disclosure provides a signal processing scheme, specifically, a communication node in the multi-mode communication network obtains a link type of a link between the communication node and an opposite communication node, and then determines a signal transmission mode used when the communication node transmits signals with the opposite communication node according to a preset rule and according to the link type and the signal transmission direction, wherein at least one of different combinations of the link type and the signal transmission direction uses a signal transmission mode different from other combinations, and finally uses the signal transmission mode to transmit signals with the opposite communication node in the signal transmission direction of the link. On the one hand, the signal transmission mode used when the communication node communicates with the opposite-end communication node is determined based on a preset rule, the link type and the signal transmission direction, and the signal transmission modes used by the signal transmission directions of the links are not completely the same, so that the signal transmission modes suitable for the signal transmission directions of the links can be selected by combining the requirements and the characteristics of signals under different link types and different signal transmission directions in a multimode communication network (such as an HPLC (high performance liquid chromatography) and HRF (high performance liquid chromatography) dual-mode communication network) and the functional characteristics of different communication nodes, and flexible waveform configuration is realized in the multimode communication network; on the other hand, when a signal transmission mode (such as DFT-S-OFDM) with lower peak power and average power ratio of a transmitted signal and smaller signal nonlinear distortion introduced when power is increased is selected from the at least two signal transmission modes to transmit signals in the signal transmission direction of the link, the power amplification efficiency of the power amplifier is maximized, and further the improvement of communication performance is realized.

Fig. 4 shows a flowchart of a signal processing method according to embodiment 1 of the present disclosure. The signal transmission method is applied to communication nodes in the multimode communication network, wherein the communication nodes of the multimode communication network communicate by using at least two links and at least two signal transmission modes. As shown in fig. 4, the signal processing method includes the following steps S410 to S430:

in step S410, a link type of a link between the communication node and a counterpart communication node is acquired.

According to embodiments of the present disclosure, when the multimode communication network includes a tree network of master and slave nodes, the multimode communication network may be an HPLC and HRF dual mode communication network, may be a 5G NR network or a 4G LTE network, or may be other multimode communication networks. When the multimode communication network is an HPLC and HRF dual mode communication network, the link types include a high speed power line carrier communication HPLC link and a high speed wireless communication HRF link.

According to an embodiment of the present disclosure, the communication node may be a master node or a slave node. When the communication node is a master node, the opposite-end communication node is a slave node; when the communication node is a slave node, the opposite-end communication node is a master node.

When a communication node communicates with a peer communication node, it is necessary to first determine which link type the communication is based on, for example: for an HPLC and HRF dual mode communication network, it is necessary to determine whether the communication is based on an HPLC link or an HRF link.

In step S420, according to a preset rule, a signal transmission manner used when the communication node and the peer communication node transmit signals is determined according to the link type and the signal transmission direction, where at least one of different combinations of the link type and the signal transmission direction uses a signal transmission manner different from other combinations.

This step S420 is used to determine a signal transmission mode used when the communication node and the peer communication node transmit signals. In a specific implementation, the determination criteria integrates three factors of a preset rule, a link type, and a signal transmission direction, and it is necessary to satisfy a condition that at least one of different combinations of the link type and the signal transmission direction uses a signal transmission manner different from other combinations. The signal transmission direction includes uplink and downlink, and the signal transmission mode includes but is not limited to Orthogonal Frequency Division Multiplexing (OFDM) and spread spectrum orthogonal frequency division multiplexing (DFT-S-OFDM) based on discrete Fourier transform.

According to an embodiment of the present disclosure, among the at least two signal transmission modes, a signal transmission mode is selected that makes a ratio of peak power to average power of a transmission signal lower when a signal is transmitted in the signal transmission direction of the link, so that signal nonlinear distortion introduced when power increases is smaller, such as: DFT-S-OFDM.

According to an embodiment of the present disclosure, for an HPLC and HRF dual mode communication network, the "preset rule" referred to in this step S420 may be defined as: in the uplink direction of at least one link type, DFT-S-OFDM is used. For example: it may be provided that DFT-S-OFDM is used on the HRF link, DFT-S-OFDM is used on the HPLC link, and DFT-S-OFDM is used on both the HRF link and the HPLC link. Regarding the downlink of the HRF link and the downlink of the HPLC link, the DFT-S-OFDM or other signal transmission modes may be determined according to specific practical situations, for example: OFDM.

According to an embodiment of the present disclosure, for the HPLC and HRF dual-mode communication network, the "preset rule" related to this step S420 may be further defined as the following three types, respectively:

A first preset rule: when the link type is an HPLC link and the signal transmission direction is uplink or downlink, OFDM is used; when the link type is an HRF link and the signal transmission direction is uplink or downlink, DFT-S-OFDM is used.

A second preset rule: when the link type is an HPLC link and the signal transmission direction is uplink or downlink, OFDM is used; when the link type is an HRF link and the signal transmission direction is uplink, DFT-S-OFDM is used; when the link type is an HRF link and the signal transmission direction is downlink, OFDM is used.

Third preset rule: when the link type is an HPLC link and the signal transmission direction is up, DFT-S-OFDM is used; when the link type is an HPLC link and the signal transmission direction is downlink, OFDM is used; when the link type is an HRF link and the signal transmission direction is uplink, DFT-S-OFDM is used;

when the link type is an HRF link and the signal transmission direction is downlink, OFDM is used.

For the first preset rule, the design concept is as follows: considering that under normal conditions, communication under an HPLC link is used for transmitting large data blocks, and communication under an HRF link is often used for covering blind supplement or carrying out emergency communication through the HRF when the HPLC wired transmission is interrupted (due to the reason of aging, damage or cutting off of a power line and the like), and the requirements of the emergency communication on the coverage area and the transmission power are higher, the DFT-S-OFDM is adopted under the HRF link, so that lower PAPR can be realized, the power of a time domain transmission signal can be ensured to obtain maximum power amplification efficiency in a linear power amplification area of a power amplifier PA, the maximum power is transmitted, and the coverage area of signal transmission is further improved.

For the second preset rule, the design concept is as follows: considering that in general, the HRF link is used as a complementary emergency communication mode when the HPLC link cannot communicate, the HRF link has a higher requirement on coverage, so a low-PAPR time domain signal waveform is required to ensure sufficient power amplification efficiency to obtain a larger transmission power. Compared with the uplink and downlink transmission of the HRF link in the first preset rule, DFT-S-OFDM is adopted, and the DFT-S-OFDM is only adopted in the uplink transmission of the HRF link in the second preset rule, because the transmitting equipment is an STA station in the uplink transmission, the power amplifier of the STA is generally low in cost, so that the power amplification factor is insufficient, the power amplification capability of the STA is weaker, and therefore, a lower PAPR waveform is required to ensure enough power amplification efficiency and transmission power; in downlink transmission, the transmitting device is CCO (or PCO), which has relatively strong processing capability in terms of hardware, for example, the PA capability of the power amplifier is stronger, and even if the PAPR of the time domain signal is high, the efficiency of the power amplifier is reduced, enough transmission power can be ensured, so that the station STA can receive the signal.

For the third preset rule, the design concept is as follows: considering that, in general, when DFT-S-OFDM is used for signal transmission, a receiving end receiving DFT-S-OFDM signals needs to have a certain capability to ensure accurate channel equalization to avoid inter-symbol interference, and the receiving processing capability of STA stations in this respect is relatively weak, so that the processing capability requirement for STAs serving as receiving ends of stations is reduced by using OFDM instead of DFT-S-OFDM for downlink signal transmission. When uplink signals are transmitted, station STA is used as a transmitting end to transmit by DFT-S-OFDM, a receiving end is CCO or PCO, and the processing capacity of the CCO or PCO is generally stronger, so that accurate channel equalization of the received DFT-S-OFDM signals can be met to ensure accurate information reception.

In addition to the specific content of the preset rule described in the embodiments of the present disclosure, a preset rule including other specific content, such as a fourth preset rule, a fifth preset rule, and the like, may be defined according to actual needs.

In step S430, using the signal transmission method, a signal is transmitted with the peer communication node in the signal transmission direction of the link.

This step S430 communicates with the correspondent node in the current signal transmission direction of the current link based on the signal transmission manner determined in step S420. For example: when the communication node is a master node CCO and the opposite communication node is a station STA, when the CCO and the STA communicate in the downlink transmission direction of the HRF link, if both the master node and the slave node adopt the first preset rule as described above, as known from the description of the first preset rule above, when the link type is the HRF link and the signal transmission direction is downlink, DFT-S-OFDM is used. Then DFT-S-OFDM is employed when the CCO communicates with the STA in the downstream transmission direction of the HRF link according to the first preset rule. Specifically, the CCO modulates the downlink signal using DFT-S-OFDM, and, corresponding to the STA, demodulates the DFT-S-OFDM signal transmitted by the CCO in a manner corresponding to DFT-S-OFDM after receiving the DFT-S-OFDM signal.

With respect to how to determine a signal transmission manner used when a communication node transmits signals with a peer communication node according to a preset rule as described above and according to a link type and a signal transmission direction, the embodiments of the present disclosure provide the following two manners:

The first way is: the preset rules according to which are known to the communication node and the correspondent node do not require any signalling for notification. For example, the communication node and the peer communication node determine the preset rules used by predefined means at factory shipment or at deployment into the network, such as: and a first preset rule, wherein when the communication is carried out by respective power-on, a signal transmission mode adopted by signals of each transmission direction of each link is determined by default according to a scheme defined by the first preset rule.

The second way is: when the communication nodes in the multimode communication network all support a plurality of preset rules, the communication nodes in the multimode communication network can instruct the opposite-end communication node to specifically adopt which preset rule through additional signaling. For example: for an HPLC and HRF dual-mode communication network, CCO or PCO may instruct the STA station specifically what preset rules are adopted by the signaling, such as: a first preset rule. According to embodiments of the present disclosure, the signaling may be sent by broadcast, or may be carried by a synchronization sequence. The communication node may instruct different peer communication nodes to employ different preset rules, e.g., instruct peer communication node a to employ a first preset rule, instruct peer communication node B to employ a second preset rule, etc. When the instruction signaling is sent by adopting broadcasting, the broadcasted instruction can contain the identification information of the opposite-end communication node and the preset rule which should be adopted by the opposite-end communication node, so that the opposite-end communication node can conveniently extract the preset rule which should be adopted by itself from the instruction.

According to embodiments of the present disclosure, in a tree network scenario, a master node may inform a slave node which preset rule is employed for application. This second approach may be performed separately, namely: after the master-slave node is powered on, the second mode is directly adopted to carry out the assignment of the preset rule, and the second mode can also be executed based on the first mode, namely: after the master node and the slave node are powered on, the preset rules are determined in a first mode, and then the preset rules used by the communication of the two parties are redetermined in a second mode. The embodiments of the present disclosure include a case where a master node decides what kind of preset rule to use and signals the decided preset rule to a slave node, and a case where a slave node decides what kind of preset rule to use and signals its decision to a master node.

The present disclosure provides another signal processing method in combination with the specific implementation of the second mode as above, and the specific steps of the signal processing method provided in embodiment 1 of the present disclosure as above. Fig. 5 shows a flowchart of a signal processing method according to embodiment 2 of the present disclosure. As shown in FIG. 5, the signal processing method comprises the following steps S510 to S560:

In step S510, the master node acquires the link type of the link with the slave node.

In step S520, the master node determines, according to a preset rule, a signal transmission manner used when transmitting signals from the slave node according to the link type and the signal transmission direction, where at least one of different combinations of the link type and the signal transmission direction uses a signal transmission manner different from other combinations.

In step S530, the master node uses the signal transmission method to transmit a signal with the slave node in the signal transmission direction of the link.

Steps S510 to S530 are specific operations of the master node when the communication node is the master node and the peer communication node is the slave node.

In step S540, the master node sends a first indication signaling to the slave node, where the first indication signaling includes a first preset field for indicating the preset rule.

The preset rule refers to a preset rule selected after the decision of the master node, and may be any one of the above three preset rules or other preset rules. As to what algorithm is chosen based on the decision, it may be case-specific.

According to the embodiment of the disclosure, the first indication signaling may be sent in a broadcast channel, or may be carried by a synchronization signal sequence, or may be sent in other manners according to actual situations. The specific manner of use may be case-specific.

According to an embodiment of the present disclosure, the number of bits of the first preset field for indicating the preset rule may be,/>And the representation is rounded upwards, and N is the number of preset rules. For example: if three preset rules need to be indicated through signaling, the number of bits of the first preset field can be 2; if two preset rules need to be indicated through signaling, the number of bits of the first preset field is 1. Which number of bits is used in particular may be case-specific.

In step S550, the slave node receives a first indication signaling sent by the master node, where the first indication signaling includes a first preset field for indicating the preset rule.

As mentioned above, the first preset field may be 1 bit, or may be 2 bits, or may be a number greater than 2 bits. When the first preset field is 1 bit, the following two cases can be classified according to the value and presence of the first preset field:

case 1: when the first preset field is empty, namely: there is no 1 bit indication, a default preset rule known to both the master and slave nodes is adopted, such as: may be, but is not limited to, a first preset rule.

Case 2: the preset rule may be, but is not limited to, a second preset rule when the first preset field is 0, and a third preset rule when the first preset field is 1.

In step S560, the slave node uses a signal transmission manner corresponding to the preset rule in the first preset field to transmit a signal with the master node in the signal transmission direction of the link.

According to the embodiment of the disclosure, when the master node and the slave node leave the factory, both sides can store the comparison table of the preset rule and the scheme corresponding to the preset rule, so that the slave node can acquire the scheme corresponding to the preset rule according to the comparison table, can determine the signal transmission mode in the signal transmission direction of the link according to the specific content defined by the scheme, and then uses the signal transmission mode to transmit signals with the master node in the signal transmission direction of the link.

For example: if the preset rule indicated to the slave node by the master node through the first indication signaling is a second preset rule, when the slave node and the master node communicate in the uplink transmission direction of the HPLC link, according to the description of the second preset rule, as known above, when the link type is the HPLC link and the signal transmission direction is uplink, OFDM is used. Then OFDM is used when the slave node communicates with the master node in the upstream direction of the HPLC link according to a second preset rule. Specifically, the slave node modulates the uplink signal by using OFDM, and, corresponding to the master node, demodulates the OFDM signal transmitted by the slave node in a manner corresponding to OFDM.

In addition, when the communication node and the opposite communication node communicate, in addition to the signal transmission method used for determining the signal in the current transmission direction of the current link according to the preset rule determined according to the two modes, the signal transmission method to be used may be determined based on the following third method, which is specifically as follows:

Third mode: a communication node in a multimode communication network (e.g., an HPLC and HRF dual-mode communication network) determines whether a current signal transmission direction (e.g., uplink and downlink) of a current link type (e.g., HPLC wired or HRF wireless) uses DFT-S-OFDM or OFDM based on a preset trigger condition or conditions, and notifies a peer communication node by means of a signaling indication. The application scene is not only suitable for the HPLC and HRF dual-mode communication network, but also suitable for the 5G NR network, the 4G LTE network and other multi-mode communication networks.

The present disclosure provides yet another signal processing method in combination with the above specific implementation of the third mode. Fig. 6 shows a flowchart of a signal processing method according to embodiment 3 of the present disclosure. The signal processing method is applied to communication nodes in a multimode communication network, and the communication nodes in the multimode communication network communicate by using at least two links and at least two signal transmission modes, as shown in fig. 6, and the signal processing method comprises the following steps S610 to S630:

In step S610, a channel quality parameter specifying a signal transmission direction on a link with the opposite-end communication node is acquired.

According to embodiments of the present disclosure, the channel quality parameters include, but are not limited to, any one or a combination of the following: the transmission accuracy, the retransmission times, the ratio PAPR of the peak power to the average power of the signals in the signal transmission direction of the link, and the transmission delay.

Wherein the transmission accuracy includes, but is not limited to: the block error rate BLER, which is the probability of a bit being transmitted error during data transmission, or the bit error rate BER, which is the error probability of a transport block after CRC check. In a specific implementation, one or several of the above parameters may be set for use in a predefined manner according to the specific situation.

In step S620, when the channel quality parameter satisfies a preset condition, a signal transmission manner in the signal transmission direction of the link is changed.

According to an embodiment of the present disclosure, when the signal transmission mode is OFDM and the channel quality parameter indicates that the channel quality is lower than a preset channel quality, the signal transmission mode is changed to DFT-S-OFDM; and when the signal transmission mode is DFT-S-OFDM and the channel quality parameter indicates that the channel quality is higher than the preset channel quality, changing the signal transmission mode into OFDM.

For example: assuming that OFDM is used in the uplink direction of the HPLC link, when the channel quality parameter is the transmission accuracy, if the transmission accuracy in the uplink direction of the HPLC link is lower than a preset threshold value within a preset time, for example, the block error rate BLER >10%, which indicates that the channel quality is lower than the preset channel quality, the modulation mode in the uplink direction of the HPLC link may be changed from OFDM to DFT-S-OFDM, so as to ensure low PAPR and higher efficiency of power amplification of the transmission signal. Then, if the transmission accuracy rate in the uplink direction of the HPLC link is higher than a preset threshold value within a preset time, for example, the block error rate BLER is less than 10%, which indicates that the channel quality is higher than the preset channel quality, the modulation mode in the uplink direction of the HPLC link may be changed from DFT-S-OFDM to OFDM. The threshold value of the transmission accuracy may also be different, for example: the commonly used BLER threshold may be 10%,1%,0.1%, etc., and the BER threshold may be 10%,1%,0.1%,0.01%, etc.

According to the embodiments of the present disclosure, when judging whether the channel quality parameter satisfies the preset condition, the judgment may be performed based on one channel quality parameter only by the transmission accuracy as shown in the above example, or may be performed based on a plurality of channel quality parameters. For example: the operation of changing the signal transmission mode in the signal transmission direction of the link may be triggered when the retransmission number exceeds a preset threshold set for the retransmission number and the PAPR of the signal exceeds a preset threshold set for the PAPR, based on both the retransmission number and the ratio PAPR of the peak power to the average power of the signal in the signal transmission direction of the link.

According to the embodiment of the disclosure, preset conditions corresponding to different link types are different; or the preset conditions corresponding to the combination of different link types and signal transmission directions are different. Namely: for a certain channel quality parameter, when determining the channel quality in the uplink and downlink directions of the HPLC link, a preset condition different from the preset condition for determining the channel quality in the uplink and downlink directions of the HRF link may be used. For example: also for the transmission accuracy, the preset condition used in determining the channel quality in the uplink and downlink directions of the HPLC link may be BLER <10%, and the preset condition used in determining the channel quality in the uplink and downlink directions of the HRF link may be BLER <1%. Or, for a certain channel quality parameter, a preset condition different from the condition for judging the channel quality of the downlink of the HPLC link may be used when judging the channel quality of the uplink of the HPLC link. For example: also for the transmission accuracy, the preset condition used in determining the channel quality in the uplink direction of the HPLC link may be BLER <5%, and the preset condition used in determining the channel quality in the downlink direction of the HPLC link may be BLER <2%.

In step S630, a second indication signaling is sent to the peer communication node, where the second indication signaling includes a second preset field, where the second preset field is used to indicate a signal transmission manner in a specified signal transmission direction of a link between the second preset field and the peer communication node.

According to an embodiment of the present disclosure, the signal transmission manner indicated by the second preset field is determined by the peer communication node according to a channel quality parameter in the signal transmission direction of the link, where when the channel quality parameter meets a preset condition, a current signal transmission manner in the signal transmission direction of the link is changed. That is, the signal transmission mode indicated by the second preset field is a changed signal transmission mode, and the current signal transmission mode is a signal transmission mode before being changed.

Corresponding to the signal processing method for describing the second indication signaling transmitting end provided in embodiment 3 of the present disclosure, embodiment 4 of the present disclosure provides a signal processing method for describing the second indication signaling receiving end. As shown in fig. 7, the signal processing method includes the following steps S710 to S720:

In step S710, a second indication signaling sent by the peer communication node is received, where the second indication signaling includes a second preset field, where the second preset field is used to indicate a signal transmission manner in a specified signal transmission direction of a link between the second preset field and the peer communication node;

In step S720, the signal transmission method indicated by the second indication signaling is used in the designated signal transmission direction of the link with the opposite communication node.

In embodiments 3 and 4 of the present disclosure, the communication node may be a master node, the peer communication node may be a slave node, or the communication node may be a slave node, and the peer communication node may be a master node.

The present disclosure provides yet another signal processing method in combination with the specific implementation of the above third mode, and the specific steps of the signal processing method provided in embodiments 1,3, and 4 of the present disclosure. Fig. 8 shows a flowchart of a signal processing method according to embodiment 5 of the present disclosure. As shown in fig. 8, the signal processing method includes the following steps S810 to S860:

in step S810, the master node acquires a link type of a link with the slave node.

In step S820, the master node determines, according to a preset rule and according to the link type and the signal transmission direction, a signal transmission mode used when transmitting signals with the slave node, where at least one of different combinations of the link type and the signal transmission direction uses a signal transmission mode different from other combinations.

In step S830, the master node uses the signal transmission method to transmit a signal with the slave node in the signal transmission direction of the link.

Steps S810 to S830 are specific operations of the master node when the communication node is the master node and the peer communication node is the slave node.

In step S840, the master node acquires a channel quality parameter specifying a signal transmission direction on a link with the slave node.

In step S850, when the channel quality parameter satisfies a preset condition, the master node changes a signal transmission manner in the signal transmission direction of the link.

In step S860, the master node sends a second indication signaling to the slave node, where the second indication signaling includes a second preset field, and the second preset field is used to indicate a signal transmission manner in a specified signal transmission direction of a link with the slave node.

Steps S840 to S860 are specific operations of the master node as the transmitting end of the second indication signaling when the communication node is the master node and the opposite communication node is the slave node.

In step S870, the slave node receives a second indication signaling sent by the master node, where the second indication signaling includes a second preset field, and the second preset field is used to indicate a signal transmission manner in a designated signal transmission direction of a link between the slave node and the master node;

in step S880, the slave node uses the signal transmission method indicated by the second indication signaling in the designated signal transmission direction of the link with the master node.

Steps S870 to S880 are specific operations of the slave node as the receiving end of the second indication signaling when the communication node is the slave node and the opposite communication node is the master node.

According to the technical scheme provided by the embodiment of the disclosure, a communication node in a multimode communication network determines a signal transmission mode used when the communication node transmits signals with an opposite end communication node according to a preset rule by acquiring a link type of a link between the communication node and the opposite end communication node and according to the link type and a signal transmission direction, wherein at least one of different combinations of the link type and the signal transmission direction uses a signal transmission mode different from other combinations, and finally the signal transmission mode is used to transmit signals with the opposite end communication node in the signal transmission direction of the link. On the one hand, the signal transmission mode used when the communication node communicates with the opposite-end communication node is determined based on a preset rule, the link type and the signal transmission direction, and the signal transmission modes used by the signal transmission directions of the links are not completely the same, so that the signal transmission modes suitable for the signal transmission directions of the links can be selected by combining the requirements and the characteristics of signals under different link types and different signal transmission directions in a multimode communication network (such as an HPLC (high performance liquid chromatography) and HRF (high performance liquid chromatography) dual-mode communication network) and the functional characteristics of different communication nodes, and flexible waveform configuration is realized in the multimode communication network; on the other hand, when a signal transmission mode (such as DFT-S-OFDM) with lower peak power and average power ratio of a transmitted signal and smaller signal nonlinear distortion introduced when power is increased is selected from the at least two signal transmission modes to transmit signals in the signal transmission direction of the link, the power amplification efficiency of the power amplifier is maximized, and further the improvement of communication performance is realized.

Fig. 9 shows a block diagram of a signal transmission device according to an embodiment of the present disclosure. The signal transmission device is arranged at a communication node in the multimode communication network, wherein the communication nodes of the multimode communication network communicate by using at least two links and at least two signal transmission modes, and the signal transmission device can be realized into part or all of the electronic equipment through software, hardware or a combination of the two. As shown in fig. 9, the signal transmission device 900 at least includes: a link type acquisition module 910 configured to acquire a link type of a link between the communication node and a peer communication node; a signal transmission mode determining module 920, configured to determine, according to a preset rule, a signal transmission mode used when the communication node and the peer communication node transmit signals according to the link type and the signal transmission direction, where at least one of different combinations of the link type and the signal transmission direction uses a signal transmission mode different from other combinations; a communication execution module 930 configured to transmit signals with the peer communication node in the signal transmission direction of the link using the signal transmission manner.

In a specific embodiment 1, as shown in fig. 10, the signal transmission device 900 further includes: a first indication signaling sending module 940 configured to send a first indication signaling to the peer communication node, where the first indication signaling includes a first preset field for indicating the preset rule.

In a specific embodiment 2, as shown in fig. 11, the signal transmission device 900 further includes: a first indication signaling receiving module 950 configured to receive a first indication signaling sent by the peer communication node, where the first indication signaling includes a first preset field for indicating the preset rule; and transmitting signals with the opposite-end communication node in the signal transmission direction of the link by using a signal transmission mode corresponding to the preset rule in the first preset field.

In a specific embodiment 3, as shown in fig. 12, the signal transmission device 900 further includes: a channel quality parameter acquisition module 960 configured to acquire a channel quality parameter specifying a signal transmission direction on a link with the peer communication node; a signal transmission mode changing module 970 configured to change a signal transmission mode in the signal transmission direction of the link when the channel quality parameter satisfies a preset condition; a second instruction signaling sending module 980 configured to send a second instruction signaling to the peer communication node, where the second instruction signaling includes a second preset field for indicating the signal transmission mode.

In a specific embodiment 4, as shown in fig. 13, the signal transmission device 900 further includes: a second instruction signaling receiving module 990 configured to receive a second instruction signaling sent by the peer communication node, where the second instruction signaling includes a second preset field for indicating the signal transmission mode; and transmitting signals with the opposite-end communication node in the signal transmission direction of the link by using the signal transmission mode indicated by the second preset field.

Fig. 14 shows a block diagram of another signal transmission device according to an embodiment of the present disclosure. The signal transmission device is disposed at a communication node in a multimode communication network, wherein the communication nodes in the multimode communication network communicate by using at least two links and at least two signal transmission modes, and the signal transmission device 1000 at least comprises: a channel quality parameter acquisition module 960 configured to acquire a channel quality parameter specifying a signal transmission direction on a link with the correspondent node; a signal transmission mode changing module 970 configured to change a signal transmission mode in the signal transmission direction of the link when the channel quality parameter satisfies a preset condition; the second instruction signaling sending module 980 is configured to send a second instruction signaling to the peer communication node, where the second instruction signaling includes a second preset field, and the second preset field is used to indicate a signal transmission manner in a specified signal transmission direction of a link between the second instruction signaling and the peer communication node.

Specifically, when the signal transmission mode is OFDM and the channel quality parameter indicates that the channel quality is lower than a preset channel quality, changing the signal transmission mode to DFT-S-OFDM; and when the signal transmission mode is DFT-S-OFDM and the channel quality parameter indicates that the channel quality is higher than the preset channel quality, changing the signal transmission mode into OFDM.

Fig. 15 shows a block diagram of a further signal transmission device according to an embodiment of the present disclosure. The signal transmission device is disposed at a communication node in a multimode communication network, wherein the communication nodes in the multimode communication network communicate by using at least two links and at least two signal transmission modes, and the signal transmission device 1100 at least comprises: a second instruction signaling receiving module 990 configured to receive a second instruction signaling sent by an opposite end communication node, where the second instruction signaling includes a second preset field, and the second preset field is used to indicate a signal transmission manner in a specified signal transmission direction of a link between the second instruction signaling and the opposite end communication node; and the signal transmission mode indicated by the second indication signaling is used in the designated signal transmission direction of the link between the opposite-end communication node.

When applied to a tree network, the signal transmission device according to the embodiment of the present disclosure may be implemented in a master node or a slave node.

The present disclosure also provides a communication device. The communication device comprises at least a signal processing apparatus as in any one of the above apparatus embodiments. In a specific embodiment, the communication device is a CCO or PCO or STA; in another specific embodiment, the communication device is a base station or a communication terminal.

Fig. 16 shows a block diagram of an electronic device according to an embodiment of the disclosure. As shown in fig. 16, the electronic device includes a memory and a processor; wherein the memory is for storing one or more computer instructions, wherein the one or more computer instructions are executed by the processor to implement the method steps of any of the above method embodiments.

The present disclosure also provides a computer-readable storage medium, which may be a computer-readable storage medium included in the electronic device or the computer system in the above-described embodiments; or may be a computer-readable storage medium, alone, that is not assembled into a device. The computer-readable storage medium stores one or more programs for use by one or more processors in performing the methods described in the present disclosure.

The foregoing description is only of the preferred embodiments of the present disclosure and description of the principles of the technology being employed. It will be appreciated by those skilled in the art that the scope of the invention referred to in this disclosure is not limited to the specific combination of features described above, but encompasses other embodiments in which any combination of features described above or their equivalents is contemplated without departing from the inventive concepts described. Such as those described above, are mutually substituted with the technical features having similar functions disclosed in the present disclosure (but not limited thereto).

Claims (40)

1. A signal transmission method applied to communication nodes in a multimode communication network, wherein the communication nodes in the multimode communication network communicate by using at least two links and at least two signal transmission modes, the method comprising:

Acquiring the link type of a link between the communication node and the opposite-end communication node;

Determining a signal transmission mode used when the communication node and the opposite-end communication node transmit signals according to the link type and the signal transmission direction according to a preset rule, wherein at least one of different combinations of the link type and the signal transmission direction uses a signal transmission mode different from other combinations;

and transmitting signals with the opposite-end communication node in the signal transmission direction of the link by using the signal transmission mode.

2. The method according to claim 1, wherein determining a signal transmission manner used when the communication node and the peer communication node transmit signals according to the link type and the signal transmission direction includes:

Among the at least two signal transmission modes, a signal transmission mode is selected which enables a lower ratio of peak power to average power of a transmission signal when transmitting signals in the signal transmission direction of the link, so that signal nonlinear distortion introduced when power increases is smaller.

3. The method according to claim 1, characterized in that:

The link types comprise a high-speed power line carrier communication (HPLC) link and a high-speed wireless communication (HRF) link;

The signal transmission direction comprises uplink and downlink;

the signal transmission mode comprises Orthogonal Frequency Division Multiplexing (OFDM) and spread spectrum orthogonal frequency division multiplexing (DFT-S-OFDM) based on discrete Fourier transform.

4. A method according to claim 3, wherein the preset rules comprise:

When the link type is an HRF link and the signal transmission direction is uplink, DFT-S-OFDM is used; and/or

When the link type is HPLC link and the signal transmission direction is uplink, DFT-S-OFDM is used.

5. A method according to claim 3, wherein the preset rules comprise:

when the link type is an HPLC link and the signal transmission direction is uplink or downlink, OFDM is used;

When the link type is an HRF link and the signal transmission direction is uplink or downlink, DFT-S-OFDM is used.

6. A method according to claim 3, wherein the preset rules comprise:

when the link type is an HPLC link and the signal transmission direction is uplink or downlink, OFDM is used;

when the link type is an HRF link and the signal transmission direction is uplink, DFT-S-OFDM is used;

when the link type is an HRF link and the signal transmission direction is downlink, OFDM is used.

7. A method according to claim 3, wherein the preset rules comprise:

when the link type is an HPLC link and the signal transmission direction is up, DFT-S-OFDM is used;

When the link type is an HPLC link and the signal transmission direction is downlink, OFDM is used;

when the link type is an HRF link and the signal transmission direction is uplink, DFT-S-OFDM is used;

when the link type is an HRF link and the signal transmission direction is downlink, OFDM is used.

8. The method of claim 1, wherein the preset rule is known to the communication node and the peer communication node.

9. The method of claim 1, wherein the communication node is a master node and the peer communication node is a slave node.

10. The method according to claim 1, wherein the method further comprises:

And sending a first indication signaling to the opposite-end communication node, wherein the first indication signaling comprises a first preset field for indicating the preset rule.

11. The method of claim 10, wherein the first preset field is 1 bit, wherein the preset rule is a first preset rule when the first preset field is empty, wherein the preset rule is a second preset rule when the first preset field is 0, and wherein the preset rule is a third preset rule when the first preset field is 1.

12. The method of claim 10, wherein the number of bits of the first predetermined field is, />And the representation is rounded upwards, and N is the number of preset rules.

13. The method according to claim 10, characterized in that the first indication signaling is sent in a broadcast channel or carried by a synchronization signal sequence.

14. The method according to claim 1, wherein the method further comprises:

And sending a second indication signaling to the opposite-end communication node, wherein the second indication signaling comprises a second preset field for indicating the signal transmission mode.

15. The method according to claim 1, wherein the method further comprises:

acquiring channel quality parameters of a designated signal transmission direction on a link between the opposite-end communication node and the opposite-end communication node;

And when the channel quality parameter meets a preset condition, changing a signal transmission mode in the signal transmission direction of the link.

16. The method of claim 15, wherein the channel quality parameters comprise a combination of any one or more of: the transmission accuracy, the retransmission times, the ratio PAPR of the peak power to the average power of the signals in the signal transmission direction of the link, and the transmission delay.

17. The method of claim 15, wherein when the signal transmission mode is OFDM and the channel quality parameter indicates that the channel quality is lower than a preset channel quality, changing the signal transmission mode to DFT-S-OFDM;

and when the signal transmission mode is DFT-S-OFDM and the channel quality parameter indicates that the channel quality is higher than the preset channel quality, changing the signal transmission mode into OFDM.

18. The method according to claim 15, wherein:

Preset conditions corresponding to different link types are different; or alternatively

The preset conditions corresponding to the combination of different link types and signal transmission directions are different.

19. The method of claim 1, wherein the communication node is a slave node and the peer communication node is a master node.

20. The method according to claim 1, wherein the method further comprises:

Receiving a first indication signaling or a second indication signaling sent by the opposite-end communication node, wherein the first indication signaling comprises a first preset field for indicating the preset rule, and the second indication signaling comprises a second preset field for indicating the signal transmission mode;

and transmitting signals with the opposite communication node in the signal transmission direction of the link by using a signal transmission mode corresponding to the preset rule in the first preset field or using a signal transmission mode indicated by the second preset field.

21. The method of claim 20, wherein the signal transmission manner indicated by the second preset field is determined by the peer communication node according to a channel quality parameter in the signal transmission direction of the link, and wherein the current signal transmission manner in the signal transmission direction of the link is changed when the channel quality parameter satisfies a preset condition.

22. A signal transmission method applied to communication nodes in a multimode communication network, wherein the communication nodes in the multimode communication network communicate by using at least two links and at least two signal transmission modes, the method comprising:

Acquiring channel quality parameters of a designated signal transmission direction on a link between the opposite-end communication node and the opposite-end communication node;

When the channel quality parameter meets a preset condition, changing a signal transmission mode in the signal transmission direction of the link;

And sending a second indication signaling to the opposite-end communication node, wherein the second indication signaling comprises a second preset field, and the second preset field is used for indicating a signal transmission mode in a designated signal transmission direction of a link between the second preset field and the opposite-end communication node.

23. The method of claim 22, wherein the channel quality parameters comprise a combination of any one or more of: the transmission accuracy, the retransmission times, the ratio PAPR of the peak power to the average power of the signals in the signal transmission direction of the link, and the transmission delay.

24. The method as claimed in claim 22, wherein:

When the signal transmission mode is OFDM and the channel quality parameter indicates that the channel quality is lower than the preset channel quality, changing the signal transmission mode into DFT-S-OFDM;

and when the signal transmission mode is DFT-S-OFDM and the channel quality parameter indicates that the channel quality is higher than the preset channel quality, changing the signal transmission mode into OFDM.

25. The method as recited in claim 22, wherein:

Preset conditions corresponding to different link types are different; or alternatively

The preset conditions corresponding to the combination of different link types and signal transmission directions are different.

26. The method of claim 22, wherein the signal transmission manner indicated by the second preset field is determined by the peer communication node according to a channel quality parameter in the signal transmission direction of the link, and wherein the current signal transmission manner in the signal transmission direction of the link is changed when the channel quality parameter satisfies a preset condition.

27. The method as claimed in claim 22, wherein:

the communication node is a master node, and the opposite-end communication node is a slave node; or alternatively

The communication node is a slave node, and the opposite end node is a master node.

28. A signal transmission method applied to communication nodes in a multimode communication network, wherein the communication nodes in the multimode communication network communicate by using at least two links and at least two signal transmission modes, the method comprising:

Receiving a second indication signaling sent by an opposite-end communication node, wherein the second indication signaling comprises a second preset field, and the second preset field is used for indicating a signal transmission mode in a designated signal transmission direction of a link between the second preset field and the opposite-end communication node;

And the signal transmission mode indicated by the second indication signaling is used in the designated signal transmission direction of the link between the opposite-end communication node.

29. The method according to claim 28, wherein:

the communication node is a slave node, and the opposite-end communication node is a master node; or alternatively

The communication node is a master node, and the opposite end node is a slave node.

30. A signal transmission device, provided in a communication node of a multimode communication network, wherein the communication nodes of the multimode communication network communicate using at least two links and at least two signal transmission modes, the device comprising at least:

A link type acquisition module configured to acquire a link type of a link between the communication node and a peer communication node;

The signal transmission mode determining module is configured to determine a signal transmission mode used when the communication node and the opposite-end communication node transmit signals according to the link type and the signal transmission direction according to a preset rule, wherein at least one of different combinations of the link type and the signal transmission direction uses a signal transmission mode different from other combinations;

and the communication execution module is configured to transmit signals with the opposite-end communication node in the signal transmission direction of the link by using the signal transmission mode.

31. The apparatus of claim 30, wherein the apparatus further comprises:

The signal transmission mode changing module is configured to acquire channel quality parameters of a designated signal transmission direction on a link between the signal transmission mode changing module and the opposite-end communication node; and when the channel quality parameter meets a preset condition, changing a signal transmission mode in the signal transmission direction of the link.

32. The apparatus of claim 30, wherein the apparatus further comprises:

A first indication signaling sending module configured to send a first indication signaling to the peer communication node, where the first indication signaling includes a first preset field for indicating the preset rule;

And/or the number of the groups of groups,

And the second instruction signaling sending module is configured to send a second instruction signaling to the opposite-end communication node, wherein the second instruction signaling comprises a second preset field for indicating the signal transmission mode.

33. The apparatus of claim 30, wherein the apparatus further comprises:

The first indication signaling receiving module is configured to receive a first indication signaling sent by the opposite-end communication node, wherein the first indication signaling comprises a first preset field for indicating the preset rule; transmitting signals with the opposite-end communication node in the signal transmission direction of the link by using a signal transmission mode corresponding to the preset rule in the first preset field;

And/or the number of the groups of groups,

The second instruction signaling receiving module is configured to receive a second instruction signaling sent by the opposite-end communication node, wherein the second instruction signaling comprises a second preset field for indicating the signal transmission mode; and transmitting signals with the opposite-end communication node in the signal transmission direction of the link by using the signal transmission mode indicated by the second preset field.

34. The apparatus of claim 30, wherein the device comprises a plurality of sensors,

When the signal transmission mode is OFDM and the channel quality parameter indicates that the channel quality is lower than the preset channel quality, changing the signal transmission mode into DFT-S-OFDM;

and when the signal transmission mode is DFT-S-OFDM and the channel quality parameter indicates that the channel quality is higher than the preset channel quality, changing the signal transmission mode into OFDM.

35. A signal transmission device, provided in a communication node of a multimode communication network, wherein the communication nodes of the multimode communication network communicate using at least two links and at least two signal transmission modes, the device comprising at least:

The system comprises a channel quality parameter acquisition module, a channel quality parameter acquisition module and a communication module, wherein the channel quality parameter acquisition module is configured to acquire channel quality parameters of a designated signal transmission direction on a link between the channel quality parameter acquisition module and an opposite-end communication node;

A signal transmission mode changing module configured to change a signal transmission mode in the signal transmission direction of the link when the channel quality parameter satisfies a preset condition;

The second instruction signaling sending module is configured to send a second instruction signaling to the opposite-end communication node, wherein the second instruction signaling comprises a second preset field, and the second preset field is used for indicating a signal transmission mode in a designated signal transmission direction of a link between the second instruction signaling and the opposite-end communication node.

36. The apparatus according to claim 35, wherein:

When the signal transmission mode is OFDM and the channel quality parameter indicates that the channel quality is lower than the preset channel quality, changing the signal transmission mode into DFT-S-OFDM;

and when the signal transmission mode is DFT-S-OFDM and the channel quality parameter indicates that the channel quality is higher than the preset channel quality, changing the signal transmission mode into OFDM.

37. A signal transmission device, provided in a communication node of a multimode communication network, wherein the communication nodes of the multimode communication network communicate using at least two links and at least two signal transmission modes, the device comprising at least:

The second instruction signaling receiving module is configured to receive a second instruction signaling sent by the opposite-end communication node, wherein the second instruction signaling comprises a second preset field, and the second preset field is used for indicating a signal transmission mode in a designated signal transmission direction of a link between the second instruction signaling and the opposite-end communication node; and the signal transmission mode indicated by the second indication signaling is used in the designated signal transmission direction of the link between the opposite-end communication node.

38. A communication device comprising at least a signal processing apparatus according to any one of claims 30 to 37.

39. An electronic device comprising a memory and a processor; wherein the memory is for storing one or more computer instructions, wherein the one or more computer instructions are executed by the processor to implement the method steps of any one of claims 1-29.

40. A computer readable storage medium having stored thereon computer instructions, which when executed by a processor, implement the method steps of any of claims 1 to 29.