CN118214504B

CN118214504B - Signal transmission method and device and electronic equipment

Info

Publication number: CN118214504B
Application number: CN202410629191.1A
Authority: CN
Inventors: 代洪光; 余雅威; 陈金雷; 王贤辉; 倪媛媛; 徐鲲鹏; 冀笑伟; 吴磊
Original assignee: Beijing Smartchip Microelectronics Technology Co Ltd; Beijing Smartchip Semiconductor Technology Co Ltd
Current assignee: Beijing Smartchip Microelectronics Technology Co Ltd; Beijing Smartchip Semiconductor Technology Co Ltd
Priority date: 2024-05-21
Filing date: 2024-05-21
Publication date: 2024-08-02
Anticipated expiration: 2044-05-21
Also published as: CN118214504A

Abstract

The embodiment of the invention provides a signal transmission method, a signal transmission device and electronic equipment, and belongs to the technical field of communication. The method comprises the following steps: receiving a channel measurement reference signal transmitted by the slave station in a set frequency domain range or receiving a channel measurement result of the channel measurement reference signal by the slave station in the set frequency domain range when the set condition is satisfied; determining a target communication frequency band with optimal channel quality in a set frequency domain range based on a channel measurement reference signal or a channel measurement result; generating frequency band indication information based on the target communication frequency band, and sending the frequency band indication information to the slave station to indicate the slave station to perform signal transmission through the target communication frequency band. Therefore, when the embodiment of the invention meets the set condition, the target communication frequency band with the optimal channel quality in the set frequency domain range can be indicated to carry out signal transmission for the slave station, so that the power line carrier communication can realize more flexible and wider frequency band transmission.

Description

Signal transmission method and device and electronic equipment

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a signal transmission method, a signal transmission device, and an electronic device.

Background

At present, in the scenes of real-time video backhaul, massive data connection, intelligent Power grid management and electric vehicle charging management, real-time acquisition, reliable transmission and stable connection of massive data are realized by means of an High-speed Power line carrier (HPLC) LINE CARRIER communication technology.

The HPLC supported by the current protocol uses frequency ranges of 0.7MHz-12MHz, and specific frequency range numbers are as follows: frequency band number 0: [1.95, 11.96], band number 1: [2.44,5.62], band number 2: [0.78,2.93], band number 3: [1.76,2.93]. Wherein, frequency band number 0 to frequency band number 3 are typical communication frequency bands. In practical application, the method is limited by the line loss of a higher frequency band in PLC transmission, and the most widely used frequency band is frequency band number 2 or frequency band number 3, and other frequency bands are very limited in use. Generally, a certain frequency band in the frequency band list is designated for communication, and after the current frequency band is designated for communication, the frequency band configuration is rarely changed.

Disclosure of Invention

An object of an embodiment of the present invention is to provide a signal transmission method, a signal transmission device, and an electronic apparatus, which are used for solving the problem of how to enable power line carrier communication to achieve more flexible and wider frequency band transmission.

In order to achieve the above object, an embodiment of the present invention provides a signal transmission method, applied to a master station, including:

receiving a channel measurement reference signal transmitted by a slave station in a set frequency domain range or receiving a channel measurement result of the channel measurement reference signal by the slave station in the set frequency domain range under the condition that a set condition is met;

Determining a target communication frequency band with optimal channel quality in the set frequency domain range based on the channel measurement reference signal or the channel measurement result;

Generating frequency band indication information based on the target communication frequency band, and sending the frequency band indication information to the slave station to indicate the slave station to perform signal transmission through the target communication frequency band.

Optionally, the determining, based on the channel measurement reference signal, the target communication frequency band with the optimal channel quality in the set frequency domain range includes:

Channel measurement is carried out on a channel measurement reference signal in a set frequency domain range, so that channel quality parameters of all communication frequency bands in the set frequency domain range are obtained;

And determining the communication frequency band with the optimal channel quality parameter in all the communication frequency bands as the target communication frequency band with the optimal channel quality in the set frequency domain range.

Optionally, the determining, based on the channel measurement result, the target communication frequency band with the optimal channel quality in the set frequency domain range includes:

and determining a communication frequency band with optimal channel quality parameters in all communication frequency bands in the set frequency domain range as a target communication frequency band with optimal channel quality in the set frequency domain range based on a channel measurement result of the secondary station on the channel measurement reference signal in the set frequency domain range.

The preset conditions include:

optionally, the set condition is that a preset time period is reached.

Optionally, the set condition is that a preset time period is reached, and a channel measurement request sent by the slave station is received.

Optionally, the setting condition is that the communication failure rate parameter of the current communication frequency band detected in the preset time period does not meet the setting requirement.

The setting condition is that the communication failure rate parameter of the current communication frequency band is detected to not meet the setting requirement in a preset time period, and a channel measurement request sent by a slave station is received.

The target communication frequency band includes:

Optionally, the target communication frequency band includes a plurality of target communication frequency bands, the frequency band indication information indicates the plurality of target communication frequency bands in the set frequency domain range through bit mapping, the set frequency domain range is 0.7-12MHz, and the set frequency domain range includes a plurality of original communication frequency bands.

Optionally, the set frequency domain range is 0.7-12MHz, the set frequency domain range includes a plurality of original communication frequency bands and a plurality of extended communication frequency bands, and the plurality of extended communication frequency bands are obtained by frequency band division based on a specified original communication frequency band.

Optionally, the target communication frequency bands include 1, and the frequency band indication information indicates the target communication frequency band in the set frequency domain range through numerical mapping.

Optionally, the target communication frequency bands include 1, and the frequency band indication information indicates the target communication frequency band in the plurality of extended communication frequency bands through numerical mapping.

Optionally, the target communication frequency band includes 1, the frequency band indication information includes an original communication frequency band indication bit for indicating any one of the plurality of original communication frequency bands, and an extended communication frequency band indication bit for indicating any one of the plurality of extended communication frequency bands, where the original communication frequency band indication bit and the extended communication frequency band indication bit indicate the target communication frequency band in the set frequency domain range through bit value mapping respectively.

Optionally, the target communication frequency band includes 1, the frequency band indication information includes an extended communication frequency band indication bit for indicating any one of the plurality of extended communication frequency bands, and the extended communication frequency band indication bit indicates the target communication frequency band of the plurality of extended communication frequency bands through bit value mapping.

Optionally, the target communication frequency band includes a plurality of frequency band indication information, where the frequency band indication information includes an original communication frequency band indication bit for indicating any one of a plurality of original communication frequency bands and an extended communication frequency band indication bit for indicating any one of a plurality of extended communication frequency bands, where the original communication frequency band indication bit indicates the target communication frequency band of the plurality of original communication frequency bands through bit value mapping, and the extended communication frequency band indication bit indicates the target communication frequency band of the plurality of extended communication frequency bands through bit mapping.

Optionally, the target communication frequency band includes 1 or more frequency band indication information indicates the target communication frequency band in the set frequency domain range through bit mapping;

Under the condition that the designated original communication frequency band and the expanded communication frequency band are both indicated as target communication frequency bands, the designated original communication frequency band is abandoned, and the expanded communication frequency band is indicated as the target communication frequency band in the set frequency domain range.

Optionally, the target communication frequency band includes 1 or more, and the frequency band indication information indicates the target communication frequency band in the plurality of extended communication frequency bands through bit mapping.

Optionally, the set frequency domain range includes a plurality of original communication frequency bands in a [0.7,12] MHz range and a plurality of extended communication frequency bands in a [ N, M ] MHz range, where N > 12 and M > N.

Optionally, the target communication frequency band includes 1 or more, and the frequency band indication information indicates the target communication frequency band in the set frequency domain range through bit mapping.

Optionally, the modulation order of the extended communication frequency band is smaller than the modulation order of the original communication frequency band, and the coding rate of the extended communication frequency band is smaller than the coding rate of the original communication frequency band.

Optionally, the multiple target communication frequency bands indicated by the frequency band indication information adopt the same modulation order and coding rate.

Optionally, the multiple target communication frequency bands indicated by the frequency band indication information adopt modulation orders and coding rates which are independent and different from each other.

Optionally, the modulation order of the extended communication frequency band indicated by the frequency band indication information is different from the modulation order of the original communication frequency band, and the coding rate of the extended communication frequency band indicated by the frequency band indication information is different from the coding rate of the original communication frequency band.

Optionally, after the step of generating the frequency band indication information based on the target communication frequency band and sending the frequency band indication information to the secondary station, the method further includes:

the following steps are repeatedly executed until the communication failure rate parameter of the current communication frequency band is detected to meet the set requirement in the preset time period:

receiving a supplementary channel measurement reference signal sent by a slave station in a set frequency domain range or receiving a supplementary channel measurement result of the supplementary channel measurement reference signal by the slave station in the set frequency domain range when the communication failure rate parameter of the current communication frequency band is detected to not meet the set requirement in a preset time period;

determining a supplementary communication frequency band with optimal channel quality except the target communication frequency band in the set frequency domain range based on the supplementary channel measurement reference signal or the supplementary channel measurement result;

Generating supplementary frequency band indication information based on the target communication frequency band and the supplementary communication frequency band, and sending the supplementary frequency band indication information to the secondary station to indicate the secondary station to perform signal transmission through the target communication frequency band and the supplementary communication frequency band.

Optionally, the determining, based on the supplemental channel measurement reference signal, a supplemental communication band with optimal channel quality in the set frequency domain range except the target communication band includes:

Channel measurement is carried out on the supplementary channel measurement reference signals in the set frequency domain range, so that channel quality parameters of all communication frequency bands except the target communication frequency band in the set frequency domain range are obtained;

and determining the communication frequency band with the optimal channel quality parameter in all the communication frequency bands except the target communication frequency band in the set frequency domain range as the supplementary communication frequency band.

Optionally, the determining, based on the measurement result of the supplemental channel, a supplemental communication band with optimal channel quality except the target communication band in the set frequency domain range includes:

determining channel quality parameters of all communication frequency bands except the target communication frequency band in the set frequency domain range based on a supplementary channel measurement result of the receiving slave station on the supplementary channel measurement reference signal in the set frequency domain range;

Optionally, the signal transmission method further includes:

the following steps are repeatedly executed until the communication failure rate parameter still meets the setting requirement when the communication frequency band is 1:

Under the condition that the communication failure rate parameter of the current communication frequency band meets the set requirement in the preset time period, determining the communication frequency band to be improved, wherein the channel quality of the communication frequency band to be improved is the worst in the target communication frequency band and the supplementary communication frequency band;

removing the communication frequency band to be improved from the target communication frequency band and the supplementary communication frequency band to obtain an updated communication frequency band;

Generating updated frequency band indication information based on the updated communication frequency band, and sending the updated frequency band indication information to the secondary station so as to indicate the secondary station to perform signal transmission through the updated communication frequency band.

Optionally, the determining the communication band to be improved with the worst channel quality in the target communication band and the supplementary communication band includes:

And determining the communication frequency band with the worst channel quality parameter in the target communication frequency band and the supplementary communication frequency band as the communication frequency band to be improved.

Optionally, the channel quality parameter includes at least one of signal-to-noise ratio, received signal strength, time delay, and reference signal received power.

Optionally, detecting that the communication failure rate parameter of the current communication frequency band does not meet the setting requirement in the preset time period includes: the block error rate of the current communication frequency band detected in the preset time period is larger than a set threshold value; detecting that the bit error rate of the current communication frequency band is larger than a set threshold value in a preset time period; detecting that the communication delay of the current communication frequency band is larger than a set threshold value in a preset time period; and detecting that the reference signal received power of the current communication frequency band is smaller than any one of the set thresholds in a preset time period.

On the other hand, the embodiment of the invention also provides a signal transmission method, which is applied to the secondary station, and comprises the following steps:

Under the condition that the set condition is met, transmitting a channel measurement reference signal to a master station in a set frequency domain range, or transmitting a channel measurement result of the channel measurement reference signal in the set frequency domain range to the master station;

receiving frequency band indication information sent by the master station, and carrying out signal transmission based on a target communication frequency band indicated by the frequency band indication information;

The target communication frequency band is obtained by the master station determining the communication frequency band with the optimal channel quality in the set frequency domain range based on the channel measurement reference signal or the channel measurement result.

In another aspect, an embodiment of the present invention further provides a signal transmission device, including:

The data receiving module is used for receiving a channel measurement reference signal transmitted by the slave station in a set frequency domain range or receiving a channel measurement result of the channel measurement reference signal by the slave station in the set frequency domain range under the condition that the set condition is met;

The target communication frequency band determining module is used for determining a target communication frequency band with optimal channel quality in the set frequency domain range based on the channel measurement reference signal or the channel measurement result;

And the frequency band indication information sending module is used for generating frequency band indication information based on the target communication frequency band and sending the frequency band indication information to the secondary station so as to indicate the secondary station to perform signal transmission through the target communication frequency band.

Optionally, the target communication frequency band includes 1, the set frequency domain range is 0.7-12MHz, the set frequency domain range includes a plurality of original communication frequency bands and a plurality of extended communication frequency bands, the plurality of extended communication frequency bands are obtained by frequency band division based on a designated original communication frequency band, and the frequency band indication information indicates the target communication frequency band in the set frequency domain range through numerical mapping.

Optionally, the target communication frequency bands include 1, the set frequency domain range includes a plurality of original communication frequency bands in a [0.7,12] MHz range and a plurality of extended communication frequency bands in a [ N, M ] MHz range, and the frequency band indication information indicates the target communication frequency band in the set frequency domain range through numerical mapping; wherein N is more than 12, and M is more than N.

The data transmission module is used for transmitting a channel measurement reference signal to the master station in a set frequency domain range or transmitting a channel measurement result of the channel measurement reference signal to the master station in the set frequency domain range under the condition that the set condition is met;

the frequency band indication information receiving module is used for receiving the frequency band indication information sent by the master station and transmitting signals based on the target communication frequency band indicated by the frequency band indication information;

In another aspect, an embodiment of the present invention further provides a signal transmission system, including: a master station and a slave station;

The master station is used for receiving a channel measurement reference signal sent by the slave station in a set frequency domain range or receiving a channel measurement result of the channel measurement reference signal by the slave station in the set frequency domain range under the condition that a set condition is met; determining a target communication frequency band with optimal channel quality in the set frequency domain range based on the channel measurement reference signal or the channel measurement result; generating frequency band indication information based on the target communication frequency band, and sending the frequency band indication information to the slave station so as to indicate the slave station to perform signal transmission through the target communication frequency band;

the secondary station is used for sending a channel measurement reference signal to the primary station in a set frequency domain range or sending a channel measurement result of the channel measurement reference signal to the primary station in the set frequency domain range under the condition that the set condition is met; receiving frequency band indication information sent by the master station, and carrying out signal transmission based on a target communication frequency band indicated by the frequency band indication information; the target communication frequency band is obtained by the master station determining the communication frequency band with the optimal channel quality in the set frequency domain range based on the channel measurement reference signal or the channel measurement result.

In another aspect, the present invention further provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, where the processor implements the signal transmission method described above when executing the program.

In another aspect, the present invention also provides a machine-readable storage medium, on which a computer program is stored, which when executed by a processor implements the above-mentioned signal transmission method.

In another aspect, the present invention also provides a computer program product comprising a computer program which, when executed by a processor, implements the above-mentioned signal transmission method.

Through the above technical scheme, the embodiment of the invention determines the target communication frequency band with optimal channel quality in the set frequency domain range based on the channel measurement reference signal or the channel measurement result, and indicates the target communication frequency band to the slave station for signal transmission through the frequency band indication information. Compared with the prior art, the method has the advantages that a certain frequency band in the set frequency domain range is designated for communication, and after the current frequency band is designated for communication, the frequency band configuration is rarely changed. Therefore, when the embodiment of the invention meets the set condition, the target communication frequency band with the optimal channel quality in the set frequency domain range can be indicated to carry out signal transmission for the slave station, so that the power line carrier communication can realize more flexible and wider frequency band transmission.

Additional features and advantages of embodiments of the invention will be set forth in the detailed description which follows.

Drawings

The accompanying drawings are included to provide a further understanding of embodiments of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain, without limitation, the embodiments of the invention. In the drawings:

fig. 1 is a schematic flow chart of a signal transmission method provided by the invention;

FIG. 2 is a second flow chart of the signal transmission method according to the present invention;

FIG. 3 is a third flow chart of the signal transmission method according to the present invention;

FIG. 4 is a flow chart of a signal transmission method according to the present invention;

FIG. 5 is a flowchart of a signal transmission method according to the present invention;

FIG. 6 is a schematic diagram of a signal transmission method according to the present invention;

FIG. 7 is a schematic diagram of a signal transmission method according to the present invention;

FIG. 8 is a schematic diagram of a signal transmission method according to the present invention;

FIG. 9 is a diagram illustrating a signal transmission method according to the present invention;

FIG. 10 is a schematic diagram of a signal transmission method according to the present invention;

FIG. 11 is a schematic diagram of a signal transmission device according to the present invention;

FIG. 12 is a second schematic diagram of a signal transmission device according to the present invention;

Fig. 13 is a schematic structural diagram of an electronic device provided by the present invention.

Detailed Description

The following describes the detailed implementation of the embodiments of the present invention with reference to the drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the invention, are not intended to limit the invention.

Method embodiment

Referring to fig. 1, an embodiment of the present invention provides a signal transmission method, applied to a master station, including:

Step 101, when the set condition is satisfied, receiving a channel measurement reference signal transmitted by the slave station in the set frequency domain range, or receiving a channel measurement result of the channel measurement reference signal by the slave station in the set frequency domain range.

The master Station may be any one of CCO (Central Controller, central coordinator), PCO (Proxy Coordinator ) and STA (Station, station), or may be a base Station, a terminal, or the like in 4G/5G communication. The secondary station may be any one of CCO, PCO and STA, or may be a base station, a terminal, or the like in 4G/5G communication. That is, in the embodiment of the present invention, the communication between the master station and the slave station may be communication between CCO and STA, or communication between CCO and PCO, or communication between CCO and CCO, or communication between PCO and PCO, or communication between PCO and STA, or communication between STA and STA, or communication between base station and terminal, etc. In one embodiment, the master station of the embodiment of the present invention is illustrated by way of CCO and the slave station is illustrated by way of STA.

The set frequency range may be the existing HPLC use frequency range, i.e. 0.7MHz-12MHz. In an embodiment of the invention, the secondary station supports transmission of channel measurement reference signals across the full frequency band (0.7 MHz-12 MHz), or channel measurement of channel measurement reference signals across the full frequency band (0.7 MHz-12 MHz). The master station (Central Controller, CCO) receives the channel measurement reference signal transmitted by the slave station in the set frequency domain range, or receives the channel measurement result of the channel measurement reference signal by the slave station in the set frequency domain range, so as to obtain the fading characteristic of the channel in the current actual scene, and make full use of the optimal frequency band in the set frequency domain range for signal transmission.

It should be noted that, referring to fig. 2, 3 and 4, in the uplink channel measurement, the CCO sends an uplink channel measurement request to the STA, and the STA receives the uplink channel measurement request of the CCO and sends a full-band (0.7 MHz-12 MHz) channel measurement reference signal (i.e., the wideband reference signal of fig. 2 to 4) to the CCO. In some embodiments, the step of the CCO sending the uplink channel measurement request to the STA may also be omitted, and the STA directly sends the channel measurement reference signal to the CCO.

Referring to fig. 5, 6 and 7, in downlink channel measurement, the STA transmits a downlink channel measurement request to the CCO, the CCO receives a full-band (0.7 MHz-12 MHz) channel measurement reference signal transmitted by the STA and transmits the downlink channel measurement request to the STA, and the STA performs channel measurement on the full-band (0.7 MHz-12 MHz) channel measurement reference signal (i.e., the wideband reference signal of fig. 5 to 7) and transmits the channel measurement result of the channel measurement reference signal to the CCO. In some embodiments, the step of the STA sending a downlink channel measurement request to the CCO may also be omitted, and the CCO directly sends a channel measurement reference signal to the STA. Wherein the dashed steps of fig. 5 and 6 represent possible unnecessary steps, i.e. no such action, and have little impact on the overall process flow.

Step 102, determining a target communication frequency band with optimal channel quality in a set frequency domain range based on the channel measurement reference signal or the channel measurement result.

The master station may determine a channel quality parameter for each communication band in the set frequency domain based on the channel measurement reference signal or the channel measurement result, and determine a target communication band with optimal channel quality in the set frequency domain from the channel quality parameters for each communication band in the set frequency domain.

In one embodiment, determining a target communication band with optimal channel quality in a set frequency domain range based on a channel measurement reference signal includes:

And 1021, performing channel measurement on the channel measurement reference signals in the set frequency domain range to obtain channel quality parameters of all communication frequency bands in the set frequency domain range.

For example, in uplink channel measurement, the master station CCO performs channel measurement on a channel measurement reference signal in a frequency band of 0.7MHz to 12MHz to obtain channel quality parameters of 4 communication frequency bands (frequency band number 0: [1.95, 11.96], frequency band number 1: [2.44,5.62], frequency band number 2: [0.78,2.93], frequency band number 3: [1.76,2.93 ]) of 0.7MHz to 12 MHz.

Step 1022, determining the communication frequency band with the optimal channel quality parameter among all the communication frequency bands, as the target communication frequency band with the optimal channel quality in the set frequency domain range.

For example, the master station CCO determines that the communication band with the optimal channel quality parameter among band number 0, band number 1, band number 2, and band number 3 is band number 1, and takes band number 1 as the target communication band with the optimal channel quality parameter in the set frequency domain. According to the embodiment of the invention, the fading characteristics of the channel in the current actual scene are obtained through channel measurement, and the optimal frequency band in the set frequency domain range is utilized for signal transmission.

The channel quality parameter may be selected from various parameters describing channel quality, for example, the channel quality parameter includes at least one of signal-to-noise ratio, received signal strength, time delay, and reference signal received power. I.e. the channel quality parameter may be one of the signal-to-noise ratio, the received signal strength, the time delay and the reference signal received power, or may be a plurality of the signal-to-noise ratio, the received signal strength, the time delay and the reference signal received power.

In another embodiment, determining a target communication band with optimal channel quality in a set frequency domain range based on a channel measurement result includes: and determining a communication frequency band with optimal channel quality parameters in all communication frequency bands in the set frequency domain range as a target communication frequency band with optimal channel quality in the set frequency domain range based on a channel measurement result of the secondary station on the channel measurement reference signal in the set frequency domain range.

In downlink channel measurement, a secondary station STA performs channel measurement on a channel measurement reference signal on a frequency band of 0.7MHz-12MHz to obtain channel quality parameters of 4 communication frequency bands (frequency band number 0: [1.95, 11.96], frequency band number 1: [2.44,5.62], frequency band number 2: [0.78,2.93], frequency band number 3: [1.76,2.93 ]) of 0.7MHz-12MHz, and a primary station CCO determines the channel quality parameters in the frequency band number 0, the frequency band number 1, the frequency band number 2 and the frequency band number 3. For example, the master station CCO determines that the communication band with the optimal channel quality parameter among band number 0, band number 1, band number 2, and band number 3 is band number 1, and takes band number 1 as the target communication band with the optimal channel quality parameter in the set frequency domain. According to the embodiment of the invention, the fading characteristics of the channel in the current actual scene are obtained through channel measurement, and the optimal frequency band in the set frequency domain range is utilized for signal transmission.

Also, the channel quality parameter includes at least one of a signal-to-noise ratio, a received signal strength, a time delay, and a reference signal received power.

Step 103, generating frequency band indication information based on the target communication frequency band, and sending the frequency band indication information to the slave station to indicate the slave station to perform signal transmission through the target communication frequency band.

The master station CCO generates frequency band indication information based on the frequency band number 1 (target communication frequency band), and transmits the frequency band indication information to the slave station, and the slave station STA receives the target communication frequency band and performs signal transmission through the frequency band number 1, that is, receives a downlink signal transmitted by the master station CCO on the frequency band number 1. The frequency band indication information may be used to indicate a frequency band number of the target communication frequency band, for example, the frequency band indication information corresponding to the frequency band number 1 may be 01, the frequency band indication information corresponding to the frequency band number 0 may be 00, the frequency band indication information corresponding to the frequency band number 2 may be 10, and the frequency band indication information corresponding to the frequency band number 3 may be 11.

The embodiment of the invention realizes more flexible and more effective bandwidth configuration by indicating the better-quality frequency band in 0.7-12MHz to the secondary station for subsequent signal transmission. The embodiment of the invention determines the target communication frequency band with optimal channel quality in the set frequency domain range based on the channel measurement reference signal or the channel measurement result, and indicates the target communication frequency band to the slave station for signal transmission through the frequency band indication information. Compared with the prior art, the method has the advantages that a certain frequency band in the set frequency domain range is designated for communication, and after the current frequency band is designated for communication, the frequency band configuration is rarely changed. Therefore, when the embodiment of the invention meets the set condition, the target communication frequency band with the optimal channel quality in the set frequency domain range can be indicated to carry out signal transmission for the slave station, so that the power line carrier communication can realize more flexible and wider frequency band transmission.

Since the channel fading is constantly changing, the more frequent the channel measurement is, the more timely the channel fading change can be tracked, the better the frequency selection is preferable for communication. However, frequent channel measurement requires frequent configuration/transmission of wideband channel measurement reference signals, which results in a certain waste of reference resources, and additional computation and resources for channel measurement and feedback.

In other aspects of embodiments of the invention, the set condition is that a preset time period is reached.

In the embodiment of the invention, the setting condition is that a preset time period is reached. And under the condition that the preset time period is reached, the master station CCO receives the channel measurement reference signal transmitted by the slave station STA in the set frequency domain range, or receives the channel measurement result of the slave station STA on the channel measurement reference signal in the set frequency domain range.

For example, the secondary station STA may transmit the channel measurement reference signal in the set frequency domain range, or may transmit the channel measurement result for the channel measurement reference signal according to a predetermined time period. The value of the preset time period may be preset, for example, the preset time period may be 2 hours, or may be separately configured through signaling. The values of the preset time periods of the uplink transmission and the downlink transmission for data transmission and reception can be the same (same set) or different.

According to the embodiment of the invention, under the condition that the preset time period is reached, the master station CCO receives the channel measurement reference signal transmitted by the slave station STA in the set frequency domain range or receives the channel measurement result of the channel measurement reference signal so as to determine the target communication frequency band with optimal channel quality, so that the embodiment of the invention realizes more flexible and wider frequency band transmission of the power line carrier communication through periodical channel measurement, reduces the waste of channel measurement reference signal resources, and saves the computational power and resources of a computer.

In other embodiments, the setting condition may be that the preset time period is reached, and the channel measurement request sent by the slave station is received. When the preset time period is reached and the channel measurement request sent by the secondary station is received, the primary station CCO receives the channel measurement reference signal sent by the secondary station STA in the set frequency domain range, or receives the channel measurement result of the secondary station STA on the channel measurement reference signal in the set frequency domain range. Therefore, the embodiment of the invention realizes more flexible and wider frequency band transmission of the power line carrier communication through periodical channel measurement, reduces the waste of channel measurement reference signal resources and saves the computational power and the resources of a computer.

In other aspects of the embodiments of the present invention, the setting condition is that the communication failure rate parameter of the current communication frequency band detected in the preset time period does not meet the setting requirement.

In the embodiment of the invention, the setting condition is that the communication failure rate parameter of the current communication frequency band detected in the preset time period does not meet the setting requirement. And when the condition that the communication failure rate parameter of the current communication frequency band does not meet the set requirement is detected in the preset time period, the master station CCO receives the channel measurement reference signal sent by the slave station STA in the set frequency domain range, or receives the channel measurement result of the slave station STA on the channel measurement reference signal in the set frequency domain range. When the communication failure rate parameter in the preset time period is higher, the current channel fading is larger, and the channel measurement of the broadband in the set frequency domain range needs to be triggered to reselect the communication frequency band with optimal channel quality, so that the power line carrier communication is realized to be more flexible and wider in frequency band transmission.

The detecting that the communication failure rate parameter of the current communication frequency band does not meet the setting requirement in the preset time period comprises the following steps: the block error rate of the current communication frequency band detected in the preset time period is larger than a set threshold value; detecting that the bit error rate of the current communication frequency band is larger than a set threshold value in a preset time period; detecting that the communication delay of the current communication frequency band is larger than a set threshold value in a preset time period; and detecting that the reference signal received power of the current communication frequency band is smaller than any one of the set thresholds in a preset time period. The block error rate of the current communication frequency band detected in the preset time period is larger than a set threshold, or the bit error rate is larger than the set threshold, or the communication delay is larger than the set threshold, or the reference signal receiving power is smaller than the set threshold, which indicates that the current channel fades greatly, and the wideband channel measurement in the set frequency domain range needs to be triggered to reselect the communication frequency band with optimal channel quality.

According to the embodiment of the invention, under the condition that the communication failure rate parameter of the current communication frequency band does not meet the set requirement in the preset time period, the master station CCO receives the channel measurement reference signal transmitted by the slave station STA in the set frequency domain range or receives the channel measurement result of the channel measurement reference signal so as to determine the target communication frequency band with optimal channel quality, so that the embodiment of the invention realizes more flexible and wider frequency band transmission of the power line carrier communication through periodical channel measurement, reduces the waste of channel measurement reference signal resources and saves computer calculation power and resources.

In other embodiments, the setting condition is that the communication failure rate parameter of the current communication frequency band detected in the preset time period does not meet the setting requirement, and a channel measurement request sent by the slave station is received. When the communication failure rate parameter of the current communication frequency band is detected to not meet the setting requirement in the preset time period and the channel measurement request sent by the secondary station is received, the primary station CCO receives the channel measurement reference signal sent by the secondary station STA in the set frequency domain range or receives the channel measurement result of the secondary station STA on the channel measurement reference signal in the set frequency domain range. When the communication failure rate parameter in the preset time period is higher, the current channel fading is larger, and the channel measurement of the broadband in the set frequency domain range needs to be triggered to reselect the communication frequency band with optimal channel quality, so that the power line carrier communication is realized to be more flexible and wider in frequency band transmission.

According to the embodiment of the invention, the communication failure rate parameter of the current communication frequency band is detected to not meet the set requirement in the preset time period, and the master station CCO receives the channel measurement reference signal transmitted by the slave station STA in the set frequency domain range or the channel measurement result of the channel measurement reference signal under the condition that the channel measurement request transmitted by the slave station is received, so that the determination of the target communication frequency band with optimal channel quality is carried out.

In other aspects of embodiments of the invention, more flexible and wider band transmission for power line carrier communications is further achieved. In the embodiment of the invention, the target communication frequency band comprises a plurality of communication frequency bands, namely a plurality of communication frequency bands for signal transmission can be indicated at one time. Referring to table 1, table 1 shows the communication band definition of the conventional HPLC.

TABLE 1

As can be seen from table 1, the frequency domain range of the embodiment of the present invention is set to 0.7-12MHz, and the frequency domain range includes 4 original communication frequency bands. When the target communication frequency band includes a plurality of target communication frequency bands, the frequency band indication information indicates the plurality of target communication frequency bands in the set frequency domain range through the bitmap. For example: and determining which communication frequency bands are adopted in the frequency band numbers 0-3 for signal transmission in a 4-bit bitmap mode. For example, when the 4 bits are 0110, it means that communication can be performed using both band number 1 ([ 2.44MHz,5.62MHz ] communication band) and band number 2 ([ 0.78MHz,2.93MHz ] communication band). After receiving the 0110 frequency band indication information, the secondary station STA performs signal transmission with the primary station CCO through the communication frequency bands of the frequency band number 1 and the frequency band number 2.

Compared with the prior art, the frequency band indication information provided by the embodiment of the invention can designate a certain frequency band in the set frequency domain range for communication, and the embodiment of the invention realizes that a plurality of target communication frequency bands are selected to indicate the secondary station to perform signal transmission in the set frequency domain range of 0.7-12MH, thereby further improving the flexibility and the frequency band width of power line carrier communication.

In other aspects of the embodiments of the present invention, the target communication frequency band includes 1, the set frequency domain range is 0.7-12MHz, the set frequency domain range includes a plurality of original communication frequency bands and a plurality of extended communication frequency bands, the plurality of extended communication frequency bands are obtained by frequency band division based on one designated original communication frequency band, and the frequency band indication information indicates the target communication frequency band in the set frequency domain range through numerical mapping.

In the embodiment of the invention, the flexibility and the frequency band bandwidth of the power line carrier communication are further improved. And on the basis of the definition of the original communication frequency band of the HPLC, the definition of the extended communication frequency band is carried out. Referring to table 2, table 2 shows the communication band definition of HPLC extended in the embodiment of the present invention.

TABLE 2

Wherein, the frequency band numbers 0-3 represent 4 original communication frequency bands, and the frequency band numbers 4-7 represent 4 extended communication frequency bands in the embodiment of the invention. The 4 extended communication frequency bands of the frequency band numbers 4-7 are obtained by equally dividing the frequency band of 4 equal division based on the communication frequency band of the frequency band number 0, and the frequency band indication information indicates one target communication frequency band in the set frequency domain range through numerical mapping. For example, the band indication information is 000, i.e., the communication band indicating the band number 0 is the target communication band, the band indication information is 001, i.e., the communication band indicating the band number 1 is the target communication band, the band indication information is 010, i.e., the communication band indicating the band number 2 is the target communication band, the band indication information is 011, i.e., the communication band indicating the band number 3 is the target communication band, the band indication information is 100, i.e., the communication band indicating the band number 4 is the target communication band, the band indication information is 101, i.e., the communication band indicating the band number 5 is the target communication band, the band indication information is 110, i.e., the communication band indicating the band number 6 is the target communication band, and the band indication information is 111, i.e., the communication band indicating the band number 7 is the target communication band. For the old slave TSA (communication band of index band number 4-7 is not supported), the slave TSA uniformly interprets the bit values (100-111) of band number 4-7 as band number 0.

It should be noted that, in the embodiment of the present invention, the communication frequency band based on the frequency band number 0 may be unevenly divided into 4 communication frequency bands, or other number of frequency band divisions may be performed based on the communication frequency band of the frequency band number 0.

Compared with the prior art, the method and the device can specify a certain frequency band in the set frequency domain range for communication, and the embodiment of the invention obtains a plurality of expanded communication frequency bands by expanding the frequency band on the basis of a plurality of original communication frequency bands, and indicates a target communication frequency band for signal transmission of a secondary station STA in the frequency band ranges of the plurality of original communication frequency bands and the plurality of expanded communication frequency bands, so that the flexibility and the frequency band bandwidth of power line carrier communication are further improved.

In other aspects of the embodiments of the present invention, the target communication frequency band includes 1, the set frequency domain range is 0.7-12MHz, the set frequency domain range includes a plurality of original communication frequency bands and a plurality of extended communication frequency bands, the plurality of extended communication frequency bands are obtained by frequency band division based on one designated original communication frequency band, and the frequency band indication information indicates the target communication frequency band in the plurality of extended communication frequency bands through numerical mapping.

In the embodiment of the invention, the communication frequency band expansion shown in the table 2 is also carried out, and 4 expansion communication frequency bands with frequency band numbers 4-7 are obtained. The 4 extended communication frequency bands of the frequency band numbers 4-7 are obtained by equally dividing the frequency band of 4 equal division based on the communication frequency band of the frequency band number 0, and the frequency band indication information indicates one target communication frequency band in the plurality of extended communication frequency bands through numerical mapping. For example, the band indication information is 100, i.e., the communication band indicating the band number 4 is the target communication band, the band indication information is 101, i.e., the communication band indicating the band number 5 is the target communication band, the band indication information is 110, i.e., the communication band indicating the band number 6 is the target communication band, and the band indication information is 111, i.e., the communication band indicating the band number 7 is the target communication band.

Compared with the prior art, the method and the device can specify a certain frequency band in the set frequency domain range for communication, the embodiment of the invention obtains a plurality of expanded communication frequency bands by expanding the frequency band on the basis of a plurality of original communication frequency bands, and indicates a target communication frequency band for signal transmission of a secondary station STA in the frequency band range of the plurality of finer expanded communication frequency bands on the basis of the original communication frequency band, thereby further improving the flexibility and the frequency band bandwidth of power line carrier communication.

In other aspects of the embodiments of the present invention, the target communication frequency band includes 1, the set frequency domain range is 0.7-12MHz, the set frequency domain range includes a plurality of original communication frequency bands and a plurality of extended communication frequency bands, the plurality of extended communication frequency bands are obtained by frequency band division based on one designated original communication frequency band, the frequency band indication information includes an original communication frequency band indication bit for indicating any one of the plurality of original communication frequency bands, and an extended communication frequency band indication bit for indicating any one of the plurality of extended communication frequency bands, the original communication frequency band indication bit and the extended communication frequency band indication bit respectively indicate the target communication frequency band in the set frequency domain range through bit value mapping.

In the embodiment of the invention, the communication frequency band expansion shown in the table 2 is also carried out, and 4 expansion communication frequency bands with frequency band numbers 4-7 are obtained. The 4 extended communication frequency bands of the frequency band numbers 4-7 are obtained by equally dividing 4 equal frequency bands based on the communication frequency band of the frequency band number 0. The frequency band indication information comprises an original communication frequency band indication bit and an expanded communication frequency band indication bit, and the original communication frequency band indication bit and the expanded communication frequency band indication bit respectively indicate and set a target communication frequency band in the frequency domain range through bit value mapping. For example, the band indication information is 0000 (the first two bits are original communication band indication bits, the second two bits are extended communication band indication bits, the same applies hereinafter), that is, the communication band indicating the band number 0 is the target communication band, the band indication information is 0100, that is, the communication band indicating the band number 1 is the target communication band, the band indication information is 1000, that is, the communication band indicating the band number 2 is the target communication band, the band indication information is 1100, that is, the communication band indicating the band number 3 is the target communication band, the band indication information is 0000, that is, the communication band indicating the band number 4 is the target communication band, the band indication information is 0001, that is, the communication band indicating the band number 5 is the target communication band, the band indication information is 0010, that is, that indicates the communication band number 6 is the target communication band, and the band indication information is 0011, that indicates the communication band number 7 is the target communication band. Particularly, if the frequency band number indicated by the first 2 bits is 0, the frequency band number 0 is not effective, and only the frequency band indicated by the second two expansion communication frequency band indication bits is adopted for communication. The method can also be compatible with the old secondary station STA, namely the old secondary station STA only interprets the frequency band resource indication information of the first 2 bits.

In other aspects of the embodiments of the present invention, the target communication frequency band includes 1, the set frequency domain range is 0.7-12MHz, the set frequency domain range includes a plurality of original communication frequency bands and a plurality of extended communication frequency bands, the plurality of extended communication frequency bands are obtained by frequency band division based on one designated original communication frequency band, the frequency band indication information includes an extended communication frequency band indication bit for indicating any one of the plurality of extended communication frequency bands, and the extended communication frequency band indication bit indicates the target communication frequency band of the plurality of extended communication frequency bands by bit value mapping.

In the embodiment of the invention, the communication frequency band expansion shown in the table 2 is also carried out, and 4 expansion communication frequency bands with frequency band numbers 4-7 are obtained. The 4 extended communication frequency bands of the frequency band numbers 4-7 are obtained by equally dividing 4 equal frequency bands based on the communication frequency band of the frequency band number 0. The frequency band indication information comprises extended communication frequency band indication bits, and the extended communication frequency band indication bits respectively indicate and set a target communication frequency band in the frequency domain range through bit value mapping. For example, the band indication information is 00, that is, the communication band indicated by the band number 4 is the target communication band, the band indication information is 01, that is, the communication band indicated by the band number 5 is the target communication band, the band indication information is 10, that is, the communication band indicated by the band number 6 is the target communication band, and the band indication information is 11, that is, the communication band indicated by the band number 7 is the target communication band.

Compared with the prior art, the method and the device can specify a certain frequency band in the set frequency domain range for communication, and the embodiment of the invention obtains a plurality of expanded communication frequency bands by expanding the frequency band on the basis of a plurality of original communication frequency bands, and indicates a target communication frequency band for signal transmission of the secondary station STA in the frequency band range of the plurality of expanded communication frequency bands, so that the flexibility and the frequency band bandwidth of power line carrier communication are further improved.

In other aspects of the embodiments of the present invention, the target communication band includes a plurality of, the set frequency domain range is 0.7-12MHz, the set frequency domain range includes a plurality of original communication bands and a plurality of extended communication bands, the plurality of extended communication bands are obtained by band division based on one designated original communication band, the band indication information includes an original communication band indication bit for indicating any one of the plurality of original communication bands, and an extended communication band indication bit for indicating any one of the plurality of extended communication bands, the original communication band indication bit indicates the target communication band of the plurality of original communication bands by bit value mapping, and the extended communication band indication bit indicates the target communication band of the plurality of extended communication bands by bit mapping.

In the embodiment of the invention, the communication frequency band expansion shown in the table 2 is also carried out, and 4 expansion communication frequency bands with frequency band numbers 4-7 are obtained. The 4 extended communication frequency bands of the frequency band numbers 4-7 are obtained by equally dividing 4 equal frequency bands based on the communication frequency band of the frequency band number 0. The frequency band indication information comprises an original communication frequency band indication bit and an extended communication frequency band indication bit. The original communication frequency band indication bit indicates a target communication frequency band in the plurality of original communication frequency bands through bit value mapping, and the expanded communication frequency band indication bit indicates the target communication frequency band in the plurality of expanded communication frequency bands through bit mapping. For example, the band indication information is 010001, that is, indicates that the communication band of band numbers 1 and 7 is the target communication band. The band indication information is 000101, that is, indicates that the communication band of band numbers 5 and 7 is the target communication band. Particularly, if the frequency band number indicated by the first 2 bits is 0, the frequency band number 0 is not effective, and only the frequency band indicated by the communication frequency band indication bit is expanded by the last four bits for communication. The method can also be compatible with the old secondary station STA, namely the old secondary station STA only interprets the frequency band resource indication information of the first 2 bits.

Compared with the prior art, the method and the device can specify a certain frequency band in the set frequency domain range for communication, and the embodiment of the invention obtains a plurality of expanded communication frequency bands by expanding the frequency band on the basis of a plurality of original communication frequency bands, and indicates a plurality of target communication frequency bands to be used for signal transmission of the secondary station STA in the frequency band ranges of the plurality of original communication frequency bands and the plurality of expanded communication frequency bands, so that the flexibility and the frequency band bandwidth of power line carrier communication are further improved.

In other aspects of the embodiments of the present invention, the target communication frequency band includes 1 or more, the set frequency domain range is 0.7-12MHz, the set frequency domain range includes a plurality of original communication frequency bands and a plurality of extended communication frequency bands, the plurality of extended communication frequency bands are obtained by frequency band division based on a specified original communication frequency band, and the frequency band indication information indicates the target communication frequency band in the set frequency domain range through bit mapping; under the condition that the designated original communication frequency band and the expanded communication frequency band are both indicated as target communication frequency bands, the designated original communication frequency band is abandoned, and the expanded communication frequency band is indicated as the target communication frequency band in the set frequency domain range.

In the embodiment of the invention, the communication frequency band expansion shown in the table 2 is also carried out, and 4 expansion communication frequency bands with frequency band numbers 4-7 are obtained. The 4 extended communication frequency bands of the frequency band numbers 4-7 are obtained by equally dividing 4 equal frequency bands based on the communication frequency band of the frequency band number 0. The set frequency domain range includes a plurality of original communication frequency bands and a plurality of extended communication frequency bands. The band indication information indicates a target communication band in the set frequency domain range through bit mapping. For example, the band indication information is 10000000, that is, the communication band indicating the band number 0 is the target communication band, the band indication information is 01000000, that is, the communication band indicating the band number 1 is the target communication band, the band indication information is 00100000, that is, the communication band indicating the band number 2 is the target communication band, the band indication information is 00010000, that is, the communication band indicating the band number 3 is the target communication band, the band indication information is 00001000, that is, the communication band indicating the band number 4 is the target communication band, the band indication information is 00000100, that is, the communication band indicating the band number 5 is the target communication band, the band indication information is 00000010, that is, the communication band indicating the band number 6 is the target communication band, and the band indication information is 00000001, that is, that indicates the communication band number 7 is the target communication band. If the frequency band number 0 and the frequency band numbers 4 to (M-1) which are subjected to subdivision and expansion based on the frequency band number 0 are indicated as used frequency bands, the frequency band number 0 is not used, and only the extended communication frequency band which is subjected to subdivision and expansion based on the frequency band number 0 is used, for example: m=8, indicated by 8-bit signaling as 10100100, and indicated band number 0, band number 2, band number 5 are available bands, but because band numbers 2, 5 are subdivided extended bands of band number 0, band number 0 is not used, and indicated available band is band number 2, band number 5.

Compared with the prior art, the method and the device can specify a certain frequency band in the set frequency domain range for communication, and the embodiment of the invention obtains a plurality of expanded communication frequency bands by expanding the frequency band on the basis of a plurality of original communication frequency bands, and indicates one or a plurality of target communication frequency bands to be used for signal transmission of the secondary station STA in the frequency band ranges of the plurality of original communication frequency bands and the plurality of expanded communication frequency bands, so that the flexibility and the frequency band bandwidth of power line carrier communication are further improved.

In other aspects of the embodiments of the present invention, the target communication frequency band includes 1 or more, the set frequency domain range is 0.7-12MHz, the set frequency domain range includes a plurality of original communication frequency bands and a plurality of extended communication frequency bands, the plurality of extended communication frequency bands are obtained by frequency band division based on one designated original communication frequency band, and the frequency band indication information indicates the target communication frequency band in the plurality of extended communication frequency bands through bit mapping.

In the embodiment of the invention, the communication frequency band expansion shown in the table 2 is also carried out, and 4 expansion communication frequency bands with frequency band numbers 4-7 are obtained. The 4 extended communication frequency bands of the frequency band numbers 4-7 are obtained by equally dividing 4 equal frequency bands based on the communication frequency band of the frequency band number 0. The band indication information indicates a target communication band of the plurality of extended communication bands through bit mapping. For example, the band indication information is 1000, that is, the communication band indicating the band number 4 is the target communication band, the band indication information is 0100, that is, the communication band indicating the band number 5 is the target communication band, the band indication information is 0010, that is, the communication band indicating the band number 6 is the target communication band, and the band indication information is 0001, that is, the communication band indicating the band number 7 is the target communication band. The band indication information is 0101, that is, the communication band indicated by band numbers 5 and 7 is the target communication band.

Compared with the prior art, the method and the device can specify a certain frequency band in the set frequency domain range for communication, and the embodiment of the invention obtains a plurality of expanded communication frequency bands by expanding the frequency band on the basis of a plurality of original communication frequency bands, and indicates 1 or more target communication frequency bands to be used for signal transmission of the secondary station STA in the frequency band range of the plurality of expanded communication frequency bands, thereby further improving the flexibility and the frequency band bandwidth of the power line carrier communication.

In other aspects of the embodiments of the present invention, the target communication frequency band includes 1, the set frequency domain range includes a plurality of original communication frequency bands within a [0.7,12] MHz range and a plurality of extended communication frequency bands within a [ N, M ] MHz range, and the frequency band indication information indicates the target communication frequency band in the set frequency domain range through numerical mapping; wherein N is more than 12, and M is more than N.

In the embodiment of the invention, the flexibility and the frequency band bandwidth of the power line carrier communication are further improved. And on the basis of the definition of the original communication frequency band of the HPLC, the definition of the extended communication frequency band is carried out. Referring to table 3, table 3 shows another communication band definition of HPLC extended in the embodiment of the present invention.

TABLE 3 Table 3

As can be seen from Table 3, the frequency range of the embodiment of the present invention is extended from the frequency range of 0.7-12MHz in Table 1 to a larger bandwidth, i.e., [0.7, M ] MHz, which may be, for example, 0.7-30 MHz or others. The parameters in table 3 satisfy: (E1-L1) ×0.0245=a1-A0, (E2-L2) ×0.0245=a2-A1, and m=30 in the above table 3 is a typical current value, and may be other values. Where a0=n=13 is a typical value, but other values are also possible. The extended frequency band numbers 4 to … in the above table 3 may be equally divided from A0 to 30, or may be irregularly defined values according to actual measurement conditions.

The band indication information indicates the target communication band in the set frequency domain range through the numerical mapping. For example, when the channel number is 0-7, the communication band of band number 4 is [13.96, 15.12] MHz, the communication band of band number 5 is [13.96, 18.12] MHz, the communication band of band number 6 is [18.96, 25.84] MHz, and the communication band of band number 7 is [25.84, 30.00] MHz.

For example, the band indication information is 000, i.e., the communication band indicating the band number 0 is the target communication band, the band indication information is 001, i.e., the communication band indicating the band number 1 is the target communication band, the band indication information is 010, i.e., the communication band indicating the band number 2 is the target communication band, the band indication information is 011, i.e., the communication band indicating the band number 3 is the target communication band, the band indication information is 100, i.e., the communication band indicating the band number 4 is the target communication band, the band indication information is 101, i.e., the communication band indicating the band number 5 is the target communication band, the band indication information is 110, i.e., the communication band indicating the band number 6 is the target communication band, and the band indication information is 111, i.e., the communication band indicating the band number 7 is the target communication band. For the old slave TSA (communication band of index band number 4-7 is not supported), the slave TSA uniformly interprets the bit values (100-111) of band number 4-7 as band number 0.

Compared with the prior art, the method and the device can assign a certain frequency band in the set frequency domain range for communication, and the embodiment of the invention can obtain a plurality of expanded communication frequency bands by expanding the frequency band range from 0.7 MHz to 12MHz to a larger bandwidth, and indicate a target communication frequency band in the frequency band ranges of a plurality of original communication frequency bands and a plurality of expanded communication frequency bands for signal transmission of the secondary station STA, thereby further improving the flexibility and the frequency band bandwidth of power line carrier communication.

In other aspects of the embodiments of the present invention, the target communication frequency band includes 1, the set frequency domain range includes a plurality of original communication frequency bands within a [0.7,12] MHz range and a plurality of extended communication frequency bands within a [ N, M ] MHz range, and the frequency band indication information indicates the target communication frequency band of the plurality of extended communication frequency bands through numerical mapping; wherein N is more than 12, and M is more than N.

In the embodiment of the invention, the communication frequency band expansion shown in the table 3 is also carried out, and 4 expansion communication frequency bands with frequency band numbers 4-7 are obtained. Wherein, 4 extended communication frequency bands of the frequency band numbers 4-7 are obtained by frequency band division of the frequency band range [ N, M ] MHz. The set frequency domain range comprises a plurality of original communication frequency bands in a [0.7,12] MHz range and a plurality of extended communication frequency bands in a [ N, M ] MHz range, and the frequency band indication information indicates a target communication frequency band in the extended communication frequency bands through numerical mapping. For example, the band indication information is 100, i.e., the communication band indicating the band number 4 is the target communication band, the band indication information is 101, i.e., the communication band indicating the band number 5 is the target communication band, the band indication information is 110, i.e., the communication band indicating the band number 6 is the target communication band, and the band indication information is 111, i.e., the communication band indicating the band number 7 is the target communication band.

Compared with the prior art, the method and the device can assign a certain frequency band in the set frequency domain range for communication, and the embodiment of the invention can obtain a plurality of expanded communication frequency bands by expanding the frequency band range from 0.7 MHz to 12MHz to a larger bandwidth, and instruct a target communication frequency band to be used for signal transmission of the secondary station STA in the frequency band range of the plurality of expanded communication frequency bands, thereby further improving the flexibility and the frequency band bandwidth of the power line carrier communication.

In other aspects of the embodiments of the present invention, the target communication frequency band includes 1, the set frequency domain range includes a plurality of original communication frequency bands within a [0.7,12] MHz range and a plurality of extended communication frequency bands within a [ N, M ] MHz range, the frequency band indication information includes an original communication frequency band indication bit for indicating any one of the plurality of original communication frequency bands and an extended communication frequency band indication bit for indicating any one of the plurality of extended communication frequency bands, and the original communication frequency band indication bit and the extended communication frequency band indication bit indicate the target communication frequency band in the set frequency domain range through bit value mapping, respectively; wherein N is more than 12, and M is more than N.

In the embodiment of the invention, the communication frequency band expansion shown in the table 3 is also carried out, and 4 expansion communication frequency bands with frequency band numbers 4-7 are obtained. Wherein, 4 extended communication frequency bands of the frequency band numbers 4-7 are obtained by frequency band division of the frequency band range [ N, M ] MHz. The set frequency domain range comprises a plurality of original communication frequency bands in a [0.7,12] MHz range and a plurality of extended communication frequency bands in a [ N, M ] MHz range, the frequency band indication information comprises an original communication frequency band indication bit and an extended communication frequency band indication bit, and the original communication frequency band indication bit and the extended communication frequency band indication bit respectively indicate a target communication frequency band in the set frequency domain range through bit value mapping. For example, the band indication information is 0000 (the first two bits are original communication band indication bits, the second two bits are extended communication band indication bits, the same applies hereinafter), that is, the communication band indicating the band number 0 is the target communication band, the band indication information is 0100, that is, the communication band indicating the band number 1 is the target communication band, the band indication information is 1000, that is, the communication band indicating the band number 2 is the target communication band, the band indication information is 1100, that is, the communication band indicating the band number 3 is the target communication band, the band indication information is 0000, that is, the communication band indicating the band number 4 is the target communication band, the band indication information is 0001, that is, the communication band indicating the band number 5 is the target communication band, the band indication information is 0010, that is, that indicates the communication band number 6 is the target communication band, and the band indication information is 0011, that indicates the communication band number 7 is the target communication band. Particularly, if the frequency band number indicated by the first 2 bits is 0, the frequency band number 0 is not effective, and only the frequency band indicated by the second two expansion communication frequency band indication bits is adopted for communication. The method can also be compatible with the old secondary station STA, namely the old secondary station STA only interprets the frequency band resource indication information of the first 2 bits.

In other aspects of the embodiments of the present invention, the target communication frequency band includes a plurality of, the set frequency domain range includes a plurality of original communication frequency bands within a [0.7,12] MHz range and a plurality of extended communication frequency bands within a [ N, M ] MHz range, the frequency band indication information includes an original communication frequency band indication bit for indicating any one of the plurality of original communication frequency bands and an extended communication frequency band indication bit for indicating any one of the plurality of extended communication frequency bands, the original communication frequency band indication bit indicates the target communication frequency band of the plurality of original communication frequency bands by bit value mapping, and the extended communication frequency band indication bit indicates the target communication frequency band of the plurality of extended communication frequency bands by bit mapping; wherein N is more than 12, and M is more than N.

In the embodiment of the invention, the communication frequency band expansion shown in the table 3 is also carried out, and 4 expansion communication frequency bands with frequency band numbers 4-7 are obtained. Wherein, 4 extended communication frequency bands of the frequency band numbers 4-7 are obtained by frequency band division of the frequency band range [ N, M ] MHz. The frequency band indication information comprises original communication frequency band indication bits and expanded communication frequency band indication bits, wherein the original communication frequency band indication bits indicate target communication frequency bands in the plurality of original communication frequency bands through bit value mapping, and the expanded communication frequency band indication bits indicate target communication frequency bands in the plurality of expanded communication frequency bands through bit mapping. For example, the band indication information is 000000 (the first two bits are original communication band indication bits, the second four bits are extended communication band indication bits, and the same applies below), that is, the communication band indicated by the band number 0 is the target communication band, the band indication information is 010000, that is, the communication band indicated by the band number 1 is the target communication band, the band indication information is 100000, that is, the communication band indicated by the band number 2 is the target communication band, the band indication information is 110000, that is, the communication band indicated by the band number 3 is the target communication band, the band indication information is 001000 (the first two bits are original communication band indication bits, the second four bits are extended communication band indication bits, and the same applies below), that is, the communication band indicated by the band number 4 is the target communication band, the band indication information is 000100, that is the target communication band indicated by the band number 5, the band indication information is 000010, that is the communication band indicated by the band number 6 is the target communication band, and the band indication information is 000001, that is the communication band indicated by the band number 7 is the target communication band. The band indication information is 000101, that is, indicates that the communication band of band numbers 5 and 7 is the target communication band. Particularly, if the frequency band number indicated by the first 2 bits is 0, the frequency band number 0 is not effective, and only the frequency band indicated by the communication frequency band indication bit is expanded by the last four bits for communication. The method can also be compatible with the old secondary station STA, namely the old secondary station STA only interprets the frequency band resource indication information of the first 2 bits.

Compared with the prior art, the method and the device can assign a certain frequency band in the set frequency domain range for communication, and the embodiment of the invention can obtain a plurality of expanded communication frequency bands by expanding the frequency band range from 0.7 MHz to 12MHz to a larger bandwidth, and instruct a plurality of target communication frequency bands to be used for signal transmission of the secondary station STA in the frequency band ranges of a plurality of original communication frequency bands and a plurality of expanded communication frequency bands, thereby further improving the flexibility and the frequency band bandwidth of power line carrier communication.

In other aspects of the embodiments of the present invention, the target communication frequency band includes a plurality of, the set frequency domain range includes a plurality of original communication frequency bands within a [0.7,12] MHz range and a plurality of extended communication frequency bands within a [ N, M ] MHz range, the frequency band indication information includes an extended communication frequency band indication bit for indicating any one of the plurality of extended communication frequency bands, and the extended communication frequency band indication indicates the target communication frequency band of the plurality of extended communication frequency bands by bit mapping; wherein N is more than 12, and M is more than N.

In the embodiment of the invention, the communication frequency band expansion shown in the table 3 is also carried out, and 4 expansion communication frequency bands with frequency band numbers 4-7 are obtained. Wherein, 4 extended communication frequency bands of the frequency band numbers 4-7 are obtained by frequency band division of the frequency band range [ N, M ] MHz. The set frequency domain range comprises a plurality of original communication frequency bands in a [0.7,12] MHz range and a plurality of extended communication frequency bands in a [ N, M ] MHz range, the frequency band indication information comprises an extended communication frequency band indication bit for indicating any one of the plurality of extended communication frequency bands, and the extended communication frequency band indication indicates a target communication frequency band in the plurality of extended communication frequency bands through bit mapping. For example, the band indication information is 0101, that is, the communication band indicated by band numbers 5 and 7 is the target communication band.

Compared with the prior art, the method and the device can assign a certain frequency band in the set frequency domain range for communication, and the embodiment of the invention can obtain a plurality of expanded communication frequency bands by expanding the frequency band range from 0.7 MHz to 12MHz to a larger bandwidth, and instruct a plurality of target communication frequency bands to be used for signal transmission of the secondary station STA in the frequency band range of the plurality of expanded communication frequency bands, thereby further improving the flexibility and the frequency band bandwidth of the power line carrier communication.

In other aspects of embodiments of the present invention, the target communication frequency band includes 1 or more, the set frequency domain range includes a plurality of original communication frequency bands within a [0.7,12] MHz range and a plurality of extended communication frequency bands within a [ N, M ] MHz range, and the frequency band indication information indicates the target communication frequency band in the set frequency domain range through bit mapping; wherein N is more than 12, and M is more than N.

In the embodiment of the invention, the communication frequency band expansion shown in the table 3 is also carried out, and 4 expansion communication frequency bands with frequency band numbers 4-7 are obtained. Wherein, 4 extended communication frequency bands of the frequency band numbers 4-7 are obtained by frequency band division of the frequency band range [ N, M ] MHz. The set frequency domain range comprises a plurality of original communication frequency bands in a [0.7,12] MHz range and a plurality of expanded communication frequency bands in a [ N, M ] MHz range, and the frequency band indication information indicates a target communication frequency band in the set frequency domain range through bit mapping. For example, the band indication information is 10000000, that is, the communication band indicating the band number 0 is the target communication band, the band indication information is 01000000, that is, the communication band indicating the band number 1 is the target communication band, the band indication information is 00100000, that is, the communication band indicating the band number 2 is the target communication band, the band indication information is 00010000, that is, the communication band indicating the band number 3 is the target communication band, the band indication information is 00001000, that is, the communication band indicating the band number 4 is the target communication band, the band indication information is 00000100, that is, the communication band indicating the band number 5 is the target communication band, the band indication information is 00000010, that is, the communication band indicating the band number 6 is the target communication band, and the band indication information is 00000001, that is, that indicates the communication band number 7 is the target communication band. The frequency band indication information is 10100100, and the indicated frequency band number 0, frequency band number 2 and frequency band number 5 are target communication frequency bands.

In other aspects of embodiments of the present invention, the target communication frequency band includes 1 or more, the set frequency domain range includes a plurality of original communication frequency bands within a [0.7,12] MHz range and a plurality of extended communication frequency bands within a [ N, M ] MHz range, and the frequency band indication information indicates the target communication frequency band of the plurality of extended communication frequency bands through bit mapping; wherein N is more than 12, and M is more than N.

In the embodiment of the invention, the communication frequency band expansion shown in the table 3 is also carried out, and 4 expansion communication frequency bands with frequency band numbers 4-7 are obtained. Wherein, 4 extended communication frequency bands of the frequency band numbers 4-7 are obtained by frequency band division of the frequency band range [ N, M ] MHz. The set frequency domain range comprises a plurality of original communication frequency bands in a [0.7,12] MHz range and a plurality of extended communication frequency bands in a [ N, M ] MHz range, and the frequency band indication information indicates a target communication frequency band in the plurality of extended communication frequency bands through bit mapping. For example, the band indication information is 1000, that is, the communication band indicating the band number 4 is the target communication band, the band indication information is 0100, that is, the communication band indicating the band number 5 is the target communication band, the band indication information is 0010, that is, the communication band indicating the band number 6 is the target communication band, and the band indication information is 0001, that is, the communication band indicating the band number 7 is the target communication band. The frequency band indication information is 1100, and the indicated frequency band number 4 and frequency band number 5 are target communication frequency bands.

Compared with the prior art, the method and the device can specify a certain frequency band in the set frequency domain range for communication, and the embodiment of the invention obtains a plurality of expanded communication frequency bands by expanding the frequency band on the basis of a plurality of original communication frequency bands, and indicates one or a plurality of target communication frequency bands to be used for signal transmission of the secondary station STA in the frequency band range of the plurality of expanded communication frequency bands, so that the flexibility and the frequency band bandwidth of the power line carrier communication are further improved.

It should be noted that, in the embodiment of the present invention, when finer frequency bands are adopted and transmission with more frequency bands is supported, the modulation mode and the coding mode may be limited.

In one embodiment, the modulation order of the extended communication band is less than the modulation order of the original communication band, and the coding rate of the extended communication band is less than the coding rate of the original communication band. Wherein, expanding the communication frequency band can refer to

Specifically, the extended communication frequency band can be obtained by equally dividing the frequency band based on the frequency band number 0 by 4 equal frequency bands, or can be a plurality of extended communication frequency bands in the [ N, M ] MHz range, wherein N is more than 12, and M is more than N. The embodiment of the invention can limit the modulation order rollback of the new selected expanded communication frequency band to BPSK or QPSK, and the coding rate is reduced to 1/3 or 1/2 of the original communication frequency band so as to ensure the basic modulation-demodulation performance. The specific values of the modulation order and the coding rate of the rollback are just reference values, and can be other modulation orders and code rates, but the modulation mode and the coding rate which cannot exceed the original communication frequency band are satisfied.

In another embodiment, the plurality of target communication bands indicated by the band indication information employ the same modulation order and coding rate as each other. That is, the same modulation order and coding rate are adopted regardless of whether the frequency band indication information indicates the original communication frequency band or the expanded communication frequency band. In other embodiments, the multiple target communication frequency bands indicated by the frequency band indication information adopt modulation orders and coding rates which are independent and different from each other, that is, data transmission in one or more supported frequency bands can adopt independent modulation modes and coding rates. In other embodiments, the modulation order of the extended communication band indicated by the band indication information is different from the modulation order of the original communication band, and the coding rate of the extended communication band indicated by the band indication information is different from the coding rate of the original communication band, that is, in the supported data transmission of one or more bands, only the modulation mode and the coding rate of the newly added extended communication band are changed.

Referring to fig. 8, in another aspect of the embodiment of the present invention, after step 103 of generating the frequency band indication information based on the target communication frequency band and the step of transmitting the frequency band indication information to the secondary station, the method further includes:

And 104, receiving a supplemental channel measurement reference signal transmitted by the slave station in a set frequency domain range or receiving a supplemental channel measurement result of the supplemental channel measurement reference signal by the slave station in the set frequency domain range when the communication failure rate parameter of the current communication frequency band is detected to not meet the set requirement in a preset time period.

The master station CCO detects that the current communication frequency band block error rate is greater than a set threshold value or the bit error rate is greater than the set threshold value or the communication delay is greater than the set threshold value or the reference signal received power is smaller than the set threshold value in a preset time period, at this time, the current channel fading is larger, and the channel measurement of the broadband in the set frequency domain range needs to be triggered, so that a supplementary communication frequency band is additionally added for data transmission on the basis of the original communication frequency band.

And 105, determining the complementary communication frequency band with optimal channel quality except the target communication frequency band in the set frequency domain range based on the complementary channel measurement reference signal or the complementary channel measurement result.

The master station may determine a channel quality parameter of each communication band except the target communication band in the set frequency domain range based on the supplemental channel measurement reference signal or the supplemental channel measurement result, and determine a supplemental communication band with optimal channel quality except the target communication band in the set frequency domain range.

In one embodiment, step 105 of determining, based on the supplemental channel measurement reference signal, a supplemental communication band in the set frequency domain range with optimal channel quality except for the target communication band includes:

And determining the communication frequency band with the optimal channel quality parameter in all the communication frequency bands except the target communication frequency band in the set frequency domain range as a supplementary communication frequency band.

For example, the original communication frequency band is frequency band number 0, and the master station CCO determines that the communication frequency band with the optimal channel quality parameters among frequency band number 1, frequency band number 2 and frequency band number 3 is frequency band number 1, and at this time, frequency band number 0 and frequency band number 1 are used as the target communication frequency band with the optimal channel quality parameters in the set frequency domain range. According to the embodiment of the invention, the fading characteristic of the channel in the current actual scene is obtained through channel measurement, and a frequency band is additionally added for data transmission on the basis of the original frequency band.

In another embodiment, step 105 of determining, based on the measurement result of the supplemental channel, a supplemental communication band with optimal channel quality in the set frequency domain range except for the target communication band includes:

In downlink channel measurement, a secondary station STA performs channel measurement on a channel measurement reference signal on a frequency band of 0.7MHz-12MHz to obtain channel quality parameters of 4 communication frequency bands (frequency band number 0: [1.95, 11.96], frequency band number 1: [2.44,5.62], frequency band number 2: [0.78,2.93], frequency band number 3: [1.76,2.93 ]) of 0.7MHz-12MHz, and a primary station CCO determines the channel quality parameters in the frequency band number 0, the frequency band number 1, the frequency band number 2 and the frequency band number 3.

And 106, generating supplementary frequency band indication information based on the target communication frequency band and the supplementary communication frequency band, and sending the supplementary frequency band indication information to the secondary station so as to instruct the secondary station to perform signal transmission through the target communication frequency band and the supplementary communication frequency band.

The master station CCO generates frequency band indication information based on the frequency band number 0 and the frequency band number 1 (target communication frequency band), and transmits the frequency band indication information to the slave station, and the slave station STA receives the target communication frequency band and performs signal transmission through the frequency band number 0 and the frequency band number 1, that is, receives downlink signals transmitted by the master station CCO on the frequency band number 0 and the frequency band number 1. The invention realizes effective signal transmission by means of triggering type and gradually increasing the number of transmission communication frequency bands.

In other aspects of the embodiments of the present invention, when it is detected in a preset time period that the communication failure rate parameter of the current communication frequency band meets the set requirement, the reception of the supplemental channel measurement reference signal transmitted by the slave station in the set frequency domain range is refused, or the reception of the channel measurement result of the supplemental channel measurement reference signal by the slave station in the set frequency domain range is refused.

In the embodiment of the invention, the master station CCO detects that the current communication frequency band block error rate is smaller than or equal to the set threshold value or the bit error rate is smaller than or equal to the set threshold value or the communication delay is smaller than or equal to the set threshold value or the reference signal receiving power is larger than or equal to the set threshold value in the preset time period, and at the moment, the current channel fading is normal, and the broadband channel measurement in the set frequency domain range is not required to be triggered, namely the transmission of the supplementary channel measurement reference signal or the channel quality feedback of each frequency band is not required to be triggered.

Referring to fig. 9, in other aspects of the embodiment of the present invention, the signal transmission method further includes:

And 107, under the condition that the communication failure rate parameter of the current communication frequency band meets the set requirement in the preset time period, determining the communication frequency band to be improved with the worst channel quality in the target communication frequency band and the supplementary communication frequency band.

In the embodiment of the invention, the master station CCO detects that the current communication frequency band block error rate is smaller than or equal to the set threshold value in the preset time period, or the bit error rate is smaller than or equal to the set threshold value, or the communication delay is smaller than or equal to the set threshold value, or the reference signal received power is larger than or equal to the set threshold value, which indicates that the current channel fading is normal, so that the communication frequency band can be gradually reduced, and the resource expenditure is reduced.

The method for determining the communication frequency band to be improved with the worst channel quality in the target communication frequency band and the supplementary communication frequency band comprises the following steps: and determining the communication frequency band with the worst channel quality parameter in the target communication frequency band and the supplementary communication frequency band as the communication frequency band to be improved.

And 108, removing the communication frequency band to be improved from the target communication frequency band and the supplementary communication frequency band to obtain an updated communication frequency band.

Step 109, generating updated frequency band indication information based on the updated communication frequency band, and transmitting the updated frequency band indication information to the secondary station to instruct the secondary station to perform signal transmission through the updated communication frequency band.

For example, the original communication frequency band is frequency band number 0, frequency band number 1 and frequency band number 5. The channel quality parameter packet of the frequency band number 1 is worst, so that the frequency band number 1 is removed from the frequency band number 0, the frequency band number 1 and the frequency band number 5, and an updated communication frequency band, namely the frequency band number 0 and the frequency band number 5, is obtained.

The master station CCO generates updated frequency band indication information based on the frequency band number 0 and the frequency band number 5, and transmits the updated frequency band indication information to the slave station, and the slave station STA receives the updated communication frequency band and performs signal transmission through the frequency band number 0 and the frequency band number 5, that is, receives downlink signals transmitted by the master station CCO on the frequency band number 0 and the frequency band number 5. The invention realizes the dynamic change and balance of the number of the used communication frequency bands and saves the computing power and resources of the computer by means of triggering and gradually reducing the number of the transmission communication frequency bands.

On the other hand, referring to fig. 10, an embodiment of the present invention further provides a signal transmission method, which is applied to a slave station, and the method includes:

Step 201, when the set condition is satisfied, transmitting a channel measurement reference signal to the master station in the set frequency domain range, or transmitting a channel measurement result of the channel measurement reference signal to the master station in the set frequency domain range.

Step 202, receiving the frequency band indication information sent by the master station, and transmitting signals based on the target communication frequency band indicated by the frequency band indication information.

The secondary station may be any one of CCO, PCO and STA, or may be a base station, a terminal, or the like in 4G/5G communication. The secondary station STA reaches a preset time period, or reaches the preset time period and receives a channel measurement request (or called measurement indication) sent by the primary station, or detects that the communication failure rate parameter of the current communication frequency band does not meet the set requirement in the preset time period (for example, the error bit rate of the current communication frequency band detected in the preset time period is larger than a set threshold value, the communication delay of the current communication frequency band detected in the preset time period is larger than the set threshold value, the reference signal receiving power of the current communication frequency band detected in the preset time period is smaller than the set threshold value, and the like), or detects that the communication failure rate parameter of the current communication frequency band detected in the preset time period does not meet the set requirement, and receives the channel measurement request (or called measurement indication) sent by the secondary station; when uplink channel measurement is carried out, a channel measurement reference signal is sent to a master station in a set frequency domain range; in downlink channel measurement, a channel measurement result of a channel measurement reference signal in a set frequency domain is transmitted to a master station CCO. The secondary station STA receives the frequency band indication information sent by the primary station CCO, and performs signal transmission based on the target communication frequency band indicated by the frequency band indication information. The manner of the target communication frequency band indicated by the frequency band indication information may be referred to various embodiments of the signal transmission methods applied to the master station, which are not described herein. The target communication band is obtained by the master station determining a communication band with optimal channel quality in the set frequency domain based on the channel measurement reference signal or the channel measurement result. The determination manner of the target communication frequency band can be referred to each embodiment of the above-mentioned signal transmission methods applied to the master station, and is not described herein.

Compared with the prior art, the method has the advantages that a certain frequency band in the set frequency domain range is designated for communication, and after the current frequency band is designated for communication, the frequency band configuration is rarely changed. Therefore, when the embodiment of the invention meets the set condition, the target communication frequency band with optimal channel quality in the set frequency domain range sent by the master station can be received, so that signal transmission is performed, and the power line carrier communication realizes more flexible and wider frequency band transmission.

Device embodiment

Referring to fig. 11, in another aspect, an embodiment of the present invention further provides a signal transmission device, including:

A data receiving module 1101, configured to receive a channel measurement reference signal transmitted by a slave station in a set frequency domain range, or receive a channel measurement result of the channel measurement reference signal by the slave station in the set frequency domain range, when a set condition is satisfied;

The target communication frequency band determining module 1102 is configured to determine a target communication frequency band with optimal channel quality in a set frequency domain range based on a channel measurement reference signal or a channel measurement result;

The frequency band indication information sending module 1103 is configured to generate frequency band indication information based on the target communication frequency band, and send the frequency band indication information to the secondary station, so as to instruct the secondary station to perform signal transmission through the target communication frequency band.

Optionally, determining, based on the channel measurement reference signal, a target communication frequency band with optimal channel quality in the set frequency domain range includes:

Channel measurement is carried out on the channel measurement reference signals of the set frequency domain range, and channel quality parameters of all communication frequency bands in the set frequency domain range are obtained;

Optionally, determining, based on the channel measurement result, a target communication frequency band with optimal channel quality in the set frequency domain range includes:

Optionally, the setting condition is that a preset time period is reached.

Optionally, the setting condition is that the communication failure rate parameter of the current communication frequency band detected in the preset time period does not meet the setting requirement, and a channel measurement request sent by the slave station is received.

Optionally, the target communication frequency band includes a plurality of target communication frequency bands, the frequency band indication information indicates to set the plurality of target communication frequency bands in a frequency domain range through bit mapping, the frequency domain range is set to be 0.7-12MHz, and the frequency domain range includes a plurality of original communication frequency bands.

Optionally, determining, based on the supplemental channel measurement reference signal, a supplemental communication band with optimal channel quality in the set frequency domain range except for the target communication band includes:

Optionally, determining, based on the measurement result of the supplemental channel, a supplemental communication band with optimal channel quality in the set frequency domain range except for the target communication band includes:

Optionally, the signal transmission method further includes:

under the condition that the communication failure rate parameter of the current communication frequency band meets the set requirement in the preset time period, determining the communication frequency band to be improved with the worst channel quality in the target communication frequency band and the supplementary communication frequency band;

generating updated frequency band indication information based on the updated communication frequency band, and transmitting the updated frequency band indication information to the secondary station to indicate the secondary station to perform signal transmission through the updated communication frequency band.

Optionally, determining the communication frequency band to be improved with the worst channel quality in the target communication frequency band and the supplementary communication frequency band includes:

The signal transmission device includes a processor and a memory, the data receiving module 1101, the target communication band determining module 1102, the band indication information transmitting module 1103, and the like are stored in the memory as program units, and the processor executes the program units stored in the memory to realize corresponding functions.

The processor includes a kernel, and the kernel fetches the corresponding program unit from the memory. The kernel may be provided with one or more.

The memory may include volatile memory, random Access Memory (RAM), and/or nonvolatile memory, such as Read Only Memory (ROM) or flash memory (flash RAM), among other forms in computer readable media, the memory including at least one memory chip.

On the other hand, referring to fig. 12, an embodiment of the present invention further provides a signal transmission device, including:

A data transmitting module 1201, configured to transmit a channel measurement reference signal to the master station in a set frequency domain range or transmit a channel measurement result of the channel measurement reference signal to the master station in the set frequency domain range when the set condition is satisfied;

a frequency band indication information receiving module 1202, configured to receive frequency band indication information sent by a master station, and perform signal transmission based on a target communication frequency band indicated by the frequency band indication information;

The signal transmission device includes a processor and a memory, the data transmission module 1201 and the frequency band instruction information reception module 1202 are stored in the memory as program units, and the processor executes the program units stored in the memory to realize the corresponding functions.

In another aspect, an embodiment of the present invention further provides a signal transmission system (not shown), including: a master station and a slave station;

The master station is used for receiving channel measurement reference signals sent by the slave station in a set frequency domain range or receiving channel measurement results of the channel measurement reference signals by the slave station in the set frequency domain range under the condition that the set condition is met; determining a target communication frequency band with optimal channel quality in a set frequency domain range based on a channel measurement reference signal or a channel measurement result; generating frequency band indication information based on the target communication frequency band, and sending the frequency band indication information to the slave station so as to indicate the slave station to perform signal transmission through the target communication frequency band;

the secondary station is used for transmitting channel measurement reference signals to the primary station in a set frequency domain range or transmitting channel measurement results of the channel measurement reference signals to the primary station in the set frequency domain range under the condition that the set condition is met; receiving frequency band indication information sent by a main station, and transmitting signals based on a target communication frequency band indicated by the frequency band indication information; the target communication frequency band is obtained by the master station determining the communication frequency band with the optimal channel quality in the set frequency domain range based on the channel measurement reference signal or the channel measurement result.

Fig. 13 illustrates a physical structure diagram of an electronic device, as shown in fig. 13, which may include: processor 1310, communication interface Communications Interface 1320, memory 1330 and communication bus 1340, wherein processor 1310, communication interface 1320, memory 1330 communicate with each other via communication bus 1340. Processor 1310 may invoke logic instructions in memory 1330 to perform a signaling method comprising: receiving a channel measurement reference signal transmitted by the slave station in a set frequency domain range or receiving a channel measurement result of the channel measurement reference signal by the slave station in the set frequency domain range when the set condition is satisfied; determining a target communication frequency band with optimal channel quality in a set frequency domain range based on a channel measurement reference signal or a channel measurement result; generating frequency band indication information based on the target communication frequency band, and sending the frequency band indication information to the slave station to indicate the slave station to perform signal transmission through the target communication frequency band. Or alternatively

Under the condition that the set condition is met, transmitting a channel measurement reference signal to the master station in a set frequency domain range, or transmitting a channel measurement result of the channel measurement reference signal in the set frequency domain range to the master station; receiving frequency band indication information sent by a main station, and transmitting signals based on a target communication frequency band indicated by the frequency band indication information; the target communication frequency band is obtained by the master station determining the communication frequency band with the optimal channel quality in the set frequency domain range based on the channel measurement reference signal or the channel measurement result.

Further, the logic instructions in the memory 1330 can be implemented in the form of software functional units and can be stored in a computer readable storage medium when sold or used as a stand alone product. Based on this understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server, a network device, etc.) to perform all or part of the steps of the method of the embodiments of the present invention. And the aforementioned storage medium includes: a usb disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a magnetic disk, or an optical disk, or other various media capable of storing program codes.

In another aspect, the present invention also provides a computer program product comprising a computer program storable on a machine-readable storage medium, the computer program, when executed by a processor, being capable of performing a signal transmission method, the method comprising: receiving a channel measurement reference signal transmitted by the slave station in a set frequency domain range or receiving a channel measurement result of the channel measurement reference signal by the slave station in the set frequency domain range when the set condition is satisfied; determining a target communication frequency band with optimal channel quality in a set frequency domain range based on a channel measurement reference signal or a channel measurement result; generating frequency band indication information based on the target communication frequency band, and sending the frequency band indication information to the slave station to indicate the slave station to perform signal transmission through the target communication frequency band. Or alternatively

In yet another aspect, the present invention also provides a machine-readable storage medium having stored thereon a computer program which when executed by a processor is implemented to perform a signal transmission method, the method comprising: receiving a channel measurement reference signal transmitted by the slave station in a set frequency domain range or receiving a channel measurement result of the channel measurement reference signal by the slave station in the set frequency domain range when the set condition is satisfied; determining a target communication frequency band with optimal channel quality in a set frequency domain range based on a channel measurement reference signal or a channel measurement result; generating frequency band indication information based on the target communication frequency band, and sending the frequency band indication information to the slave station to indicate the slave station to perform signal transmission through the target communication frequency band. Or alternatively

The apparatus embodiments described above are merely illustrative, wherein elements illustrated as separate elements may or may not be physically separate, and elements shown as elements may or may not be physical elements, may be located in one place, or may be distributed over a plurality of network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art will understand and implement the present invention without undue burden.

From the above description of the embodiments, it will be apparent to those skilled in the art that the embodiments may be implemented by means of software plus necessary general hardware platforms, or of course may be implemented by means of hardware. Based on such understanding, the foregoing technical solutions may be embodied essentially or in part in the form of a software product, which may be stored in a computer-readable storage medium, such as a ROM/RAM, a magnetic disk, an optical disk, etc., including several instructions to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to perform the various embodiments or methods of some parts of the embodiments.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method of signal transmission for use in a primary station, the method comprising:

generating frequency band indication information based on the target communication frequency band, and sending the frequency band indication information to the slave station so as to indicate the slave station to perform signal transmission through the target communication frequency band;

The set frequency domain range is 0.7-12MHz, and the set frequency domain range comprises a plurality of original communication frequency bands; or alternatively

The set frequency domain range is 0.7-12MHz, and comprises a plurality of original communication frequency bands and a plurality of expanded communication frequency bands, wherein the plurality of expanded communication frequency bands are obtained by frequency band division based on a designated original communication frequency band; or alternatively

The set frequency domain range comprises a plurality of original communication frequency bands in a [0.7,12] MHz range and a plurality of expanded communication frequency bands in a [ N, M ] MHz range, wherein N is more than 12, and M is more than N.

2. The signal transmission method according to claim 1, wherein the determining the target communication band with the optimal channel quality in the set frequency domain based on the channel measurement reference signal includes:

3. The signal transmission method according to claim 1, wherein the determining, based on the channel measurement result, a target communication band in which the channel quality in the set frequency domain is optimal, comprises:

4. The signal transmission method according to claim 1, wherein the set condition is that a preset time period is reached.

5. The signal transmission method according to claim 1, wherein the set condition is that a preset time period is reached and a channel measurement request transmitted from the secondary station is received.

6. The signal transmission method according to claim 1, wherein the setting condition is that a communication failure rate parameter of the current communication band detected in the preset time period does not satisfy the setting requirement.

7. The signal transmission method according to claim 1, wherein the setting condition is that a communication failure rate parameter of the current communication band detected in a preset period of time does not satisfy the setting requirement, and a channel measurement request transmitted from the secondary station is received.

8. The signal transmission method according to claim 1, wherein the target communication frequency band includes 1, and the frequency band indication information indicates the target communication frequency band in the set frequency domain range by numerical mapping.

9. The signal transmission method according to claim 1, wherein the target communication frequency band includes 1, and the frequency band indication information indicates the target communication frequency band of the plurality of extended communication frequency bands by numerical mapping.

10. The signal transmission method according to claim 1, wherein the target communication band includes 1, the band indication information includes an original communication band indication bit for indicating any one of a plurality of original communication bands, and an extended communication band indication bit for indicating any one of a plurality of extended communication bands, the original communication band indication bit and the extended communication band indication bit respectively indicate the target communication band in the set frequency domain range by bit value mapping.

11. The signal transmission method according to claim 1, wherein the target communication frequency band includes 1, the frequency band indication information includes an extended communication frequency band indication bit for indicating any one of a plurality of extended communication frequency bands, and the extended communication frequency band indication bit indicates the target communication frequency band of the plurality of extended communication frequency bands through bit value mapping.

12. The signal transmission method according to claim 1, wherein the target communication band includes a plurality of the band indication information including an original communication band indication bit for indicating any one of a plurality of original communication bands and an extended communication band indication bit for indicating any one of a plurality of extended communication bands, the original communication band indication bit indicating the target communication band of the plurality of original communication bands by bit value mapping, the extended communication band indication bit indicating the target communication band of the plurality of extended communication bands by bit mapping.

13. The signal transmission method according to claim 1, wherein the target communication band includes 1 or more, and the band indication information indicates the target communication band in the set frequency domain range by bit mapping;

14. The signal transmission method according to claim 1, wherein the target communication band includes 1 or more, and the band indication information indicates the target communication band of the plurality of extended communication bands by bit mapping.

15. The signal transmission method according to any one of claims 1 to 14, wherein a modulation order of the extended communication band is smaller than a modulation order of the original communication band, and a coding rate of the extended communication band is smaller than a coding rate of the original communication band.

16. The signal transmission method according to any one of claims 1 to 14, wherein the plurality of target communication bands indicated by the band indication information employ modulation orders and coding rates identical to each other.

17. The signal transmission method according to any one of claims 1 to 14, wherein the plurality of target communication bands indicated by the band indication information employ modulation orders and coding rates that are different independently from each other.

18. The signal transmission method according to any one of claims 1 to 14, wherein the modulation order of the extended communication band indicated by the band indication information is different from the modulation order of the original communication band, and the coding rate of the extended communication band indicated by the band indication information is different from the coding rate of the original communication band.

19. The signal transmission method according to claim 1, wherein after the step of generating band indication information based on the target communication band and transmitting the band indication information to the secondary station, further comprising:

20. The signal transmission method according to claim 19, wherein the determining, based on the supplemental channel measurement reference signal, a supplemental communication band in the set frequency domain range in which channel quality is optimal except for the target communication band, comprises:

21. The signal transmission method according to claim 19, wherein the determining, based on the supplemental channel measurement result, a supplemental communication band in the set frequency domain range in which channel quality is optimal except the target communication band, comprises:

22. The signal transmission method according to claim 19, characterized in that the signal transmission method further comprises:

23. The signal transmission method according to claim 22, wherein the determining the communication band to be improved with the worst channel quality among the target communication band and the supplementary communication band includes:

24. The signal transmission method of claim 2,3, 20, 21 or 23, wherein the channel quality parameter comprises at least one of signal-to-noise ratio, received signal strength, time delay, and reference signal received power.

25. The signal transmission method according to claim 6, 7 or 19, wherein detecting that the communication failure rate parameter of the current communication band does not meet the set requirement in the preset period of time includes: the block error rate of the current communication frequency band detected in the preset time period is larger than a set threshold value; detecting that the bit error rate of the current communication frequency band is larger than a set threshold value in a preset time period; detecting that the communication delay of the current communication frequency band is larger than a set threshold value in a preset time period; and detecting that the reference signal received power of the current communication frequency band is smaller than any one of the set thresholds in a preset time period.

26. A signal transmission method for use in a secondary station, the method comprising:

the target communication frequency band is obtained by the master station determining a communication frequency band with optimal channel quality in the set frequency domain range based on the channel measurement reference signal or the channel measurement result;

27. A signal transmission device, comprising:

the frequency band indication information sending module is used for generating frequency band indication information based on the target communication frequency band and sending the frequency band indication information to the slave station so as to indicate the slave station to perform signal transmission through the target communication frequency band;

28. A signal transmission device, comprising:

29. A signal transmission system, comprising: a master station and a slave station;

The secondary station is used for sending a channel measurement reference signal to the primary station in a set frequency domain range or sending a channel measurement result of the channel measurement reference signal to the primary station in the set frequency domain range under the condition that the set condition is met; receiving frequency band indication information sent by the master station, and carrying out signal transmission based on a target communication frequency band indicated by the frequency band indication information; the target communication frequency band is obtained by the master station determining a communication frequency band with optimal channel quality in the set frequency domain range based on the channel measurement reference signal or the channel measurement result;

30. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the processor implements the signal transmission method of any one of claims 1 to 25 when executing the program or the signal transmission method of claim 26 when executing the program.

31. A machine readable storage medium having stored thereon a computer program, wherein the computer program when executed by a processor implements the signal transmission method of any one of claims 1 to 25 or the signal transmission method of claim 26 when the program is executed.

32. A computer program product comprising a computer program which when executed by a processor implements the signal transmission method of any one of claims 1 to 25 or which when executed implements the signal transmission method of claim 26.