Power line broadband carrier communication method, device and computer equipment

Abstract

The application relates to a power line broadband carrier communication method, device and computer equipment. The method comprises the following steps: an upper node sends a training frame to a lower node to instruct the lower node to acquire the signal-to-noise ratios of various communication frequency bands according to the training frame, and to allocate corresponding target communication frequency bands according to the signal-to-noise ratios; the upper node sends a downlink communication data frame to at least one lower node based on the target communication frequency bands corresponding to the lower node to instruct the lower node to parse the downlink communication data frame to obtain corresponding target communication frequency bands, and to acquire corresponding data payloads based on the target communication frequency bands; the upper node sends an uplink communication trigger frame to at least one lower node; and in the case that the upper node receives an uplink communication data frame sent by the lower node based on the target communication frequency bands, the upper node parses the uplink communication data frame to obtain the data payload corresponding to the lower node. The method can improve the communication rate.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of power line broadband carrier communication, and in particular to a power line broadband carrier communication method, device and computer equipment. BACKGROUND

[0002] With the development of the power system, the current low-voltage broadband carrier communication technology rate cannot meet the growing business communication demand, and the communication efficiency needs to be further improved.

[0003] At present, the power line broadband carrier communication device can transmit and receive in a few specified frequency bands, however, due to different propagation distances of different frequency bands, when used in the field, the entire network can only select one from a small number of frequency bands, resulting in low spectrum utilization and thus reducing the communication rate. SUMMARY

[0004] Therefore, it is necessary to provide a power line broadband carrier communication method, device and computer equipment capable of improving the communication rate to solve the above technical problems.

[0005] In a first aspect, the present application provides a power line broadband carrier communication method, comprising:

[0006] sending a training frame to a lower-level node to instruct the lower-level node to obtain the signal-to-noise ratio of each communication frequency band according to the training frame;

[0007] receiving the signal-to-noise ratio information returned by the lower-level node, and allocating a corresponding target communication frequency band to each lower-level node according to the signal-to-noise ratio information;

[0008] based on the target communication frequency band corresponding to the lower-level node, sending a downlink communication data frame to at least one lower-level node to instruct the lower-level node to obtain the corresponding target communication frequency band by analyzing the downlink communication data frame, and enabling the lower-level node to obtain the corresponding data payload based on the target communication frequency band; the downlink communication data frame carries an extended frame control field, and the extended frame control field is used to represent the target communication frequency band corresponding to the corresponding lower-level node;

[0009] sending an uplink communication trigger frame to at least one lower-level node;

[0010] in the case of receiving the uplink communication data frame sent by the lower-level node based on the target communication frequency band, analyzing the uplink communication data frame to obtain the data payload corresponding to the lower-level node.

[0011] In one of the embodiments, the method further comprises:

[0012] receiving a first reply frame returned by the lower-level node based on the target communication frequency band; the first reply frame is used to represent that the lower-level node successfully obtains the corresponding data payload based on the target communication frequency band;

[0013] receiving a second reply frame returned by the subordinate node based on the target communication frequency band; the second reply frame is used to represent that the subordinate node successfully receives the uplink communication trigger frame.

[0014] In one of the embodiments, the training frame comprises a preamble frame header, a frame control field and a training field; the preamble frame header and the frame control field are transmitted through the preset communication frequency band; the training field is transmitted through the available frequency band of the power line broadband carrier; and the training field is used to instruct the subordinate node to obtain the signal-to-noise ratio of each communication frequency band according to the training field.

[0015] In one of the embodiments, the downlink communication data frame comprises a preamble frame header, a frame control field, an extended frame control field, a target training field and a target data payload; the extended frame control field is used to represent the target communication frequency band corresponding to each subordinate node; the target training field comprises the training field allocated to each subordinate node; and the target data payload comprises the data payload allocated to each subordinate node.

[0016] In a second aspect, the application further provides a power line broadband carrier communication method, comprising:

[0017] receiving the training frame sent by the superior node, and obtaining the signal-to-noise ratio of each communication frequency band according to the training frame;

[0018] sending the signal-to-noise ratio information to the superior node, so that the superior node allocates the corresponding target communication frequency band according to the signal-to-noise ratio information;

[0019] receiving the downlink communication data frame sent by the superior node based on the target communication frequency band, analyzing the downlink communication data frame, and obtaining the corresponding target communication frequency band; the downlink communication data frame carries an extended frame control field, and the extended frame control field is used to represent the target communication frequency band corresponding to the subordinate node;

[0020] obtaining the corresponding data payload of the subordinate node based on the target communication frequency band;

[0021] receiving the uplink communication trigger frame sent by the superior node based on the target communication frequency band;

[0022] sending the uplink communication data frame to the superior node based on the target communication frequency band, so that the superior node analyzes the uplink communication data frame and obtains the corresponding data payload.

[0023] In one of the embodiments, the method further comprises:

[0024] sending a first reply frame to the superior node based on the target communication frequency band; the first reply frame is used to represent that the subordinate node successfully obtains the corresponding data payload based on the target communication frequency band;

[0025] The second reply frame is returned to the upper node based on the target communication frequency band, and is used to represent that the lower node successfully receives the uplink communication trigger frame.

[0026] In one of the embodiments, the uplink communication data frame comprises a preamble frame header, a frame control field, a target training field and a target data payload; the extended frame control field is used to represent the target communication frequency band corresponding to each lower node; the target training field comprises the training field of the lower node; and the target data payload comprises the data payload of the lower node.

[0027] In a third aspect, the application further provides a power line broadband carrier communication device, comprising:

[0028] The training sending module is configured to send a training frame to the lower node to instruct the lower node to acquire the signal-to-noise ratio of each communication frequency band according to the training frame;

[0029] The signal-to-noise ratio receiving module is configured to receive the signal-to-noise ratio information returned by the lower node, and allocate the corresponding target communication frequency band to each lower node according to the signal-to-noise ratio information;

[0030] The downlink sending module is configured to send a downlink communication data frame to at least one lower node based on the target communication frequency band corresponding to the lower node, to instruct the lower node to parse the downlink communication data frame to obtain the corresponding target communication frequency band, and to enable the lower node to acquire the corresponding data payload based on the target communication frequency band; the downlink communication data frame carries an extended frame control field, and the extended frame control field is used to represent the target communication frequency band corresponding to the corresponding lower node;

[0031] The trigger sending module is configured to send an uplink communication trigger frame to at least one lower node;

[0032] The uplink parsing module is configured to, in the case that the uplink communication data frame sent by the lower node based on the target communication frequency band is received, parse the uplink communication data frame to obtain the data payload corresponding to the lower node.

[0033] In a fourth aspect, the application further provides a power line broadband carrier communication device, comprising:

[0034] The signal-to-noise ratio acquiring module is configured to receive the training frame sent by the upper node, and acquire the signal-to-noise ratio of each communication frequency band according to the training frame;

[0035] The signal-to-noise ratio sending module is configured to send the signal-to-noise ratio information to the upper node, to enable the upper node to allocate the corresponding target communication frequency band according to the signal-to-noise ratio information;

[0036] The downlink receiving module is configured to receive a downlink communication data frame sent by the upper node based on the target communication frequency band, parse the downlink communication data frame, and obtain the corresponding target communication frequency band. The downlink communication data frame carries an extended frame control field, and the extended frame control field is used to represent the target communication frequency band corresponding to the lower node.

[0037] The load obtaining module is configured to obtain the data load corresponding to the lower node based on the target communication frequency band.

[0038] The trigger receiving module is configured to receive an uplink communication trigger frame sent by the upper node based on the target communication frequency band.

[0039] The uplink sending module is configured to send an uplink communication data frame to the upper node based on the target communication frequency band, so that the upper node parses the uplink communication data frame and obtains the corresponding data load.

[0040] In a fifth aspect, the present application further provides a computer device, which comprises a memory and a processor. The memory stores a computer program, and the processor implements the method steps of any one of the first aspect and the second aspect when executing the computer program.

[0041] In a sixth aspect, the present application further provides a computer readable storage medium, which stores a computer program. The computer program is executed by a processor to implement the method steps of any one of the first aspect and the second aspect.

[0042] In a seventh aspect, the present application further provides a computer program product, which comprises a computer program. The computer program is executed by a processor to implement the method steps of any one of the first aspect and the second aspect.

[0043] The power line broadband carrier communication method, device and computer device described above can indicate the lower node to obtain the signal-to-noise ratio of each communication frequency band according to the training frame sent by the upper node, and allocate the corresponding target communication frequency band according to the signal-to-noise ratio returned by the lower node. The downlink communication data frame is sent to at least one lower node based on the target communication frequency band corresponding to the lower node, so as to indicate the lower node to parse the downlink communication data frame and obtain the corresponding target communication frequency band, and obtain the corresponding data load based on the target communication frequency band. The uplink communication trigger frame is sent to at least one lower node, and the data load corresponding to the lower node is obtained by parsing the uplink communication data frame sent by the lower node based on the target communication frequency band. The communication frequency band can be allocated in real time according to the communication quality, the utilization rate of the communication frequency band is improved, and the communication rate is improved. BRIEF DESCRIPTION OF DRAWINGS

[0044] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the related art, the following will briefly introduce the drawings needed to be used in the description of the embodiments of the present application or the related art. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other related drawings can be obtained on the basis of these drawings without any creative effort.

[0045] Figure 1 An application environment diagram of the power line broadband carrier communication method in one embodiment;

[0046] Figure 2 A flowchart of the power line broadband carrier communication method in one embodiment;

[0047] Figure 3 A resource unit division diagram of OFDMA in one embodiment;

[0048] Figure 4 A flowchart of the power line broadband carrier communication method in another embodiment;

[0049] Figure 5 A signaling diagram of the power line broadband carrier communication method in one embodiment;

[0050] Figure 6 A structural block diagram of the power line broadband carrier communication device in one embodiment;

[0051] Figure 7 A structural block diagram of the power line broadband carrier communication device in another embodiment;

[0052] Figure 8 An internal structure diagram of the computer device in one embodiment. DETAILED DESCRIPTION

[0053] In order to make the purposes, technical solutions and advantages of the present application more clear, the present application will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application, and are not used to limit the present application.

[0054] The power line broadband carrier communication method provided by the embodiments of the present application can be applied to, for example, Figure 1The application environment shown. Among them, the superior node 102 communicates with the subordinate node 104 through the network. Among them, the superior node 102 is used to send the training frame to the subordinate node 104, to instruct the subordinate node 104 to obtain the signal-to-noise ratio of each communication frequency band according to the training frame, receive the signal-to-noise ratio information returned by the subordinate node 104, and allocate the corresponding target communication frequency band for each subordinate node 104 according to the signal-to-noise ratio information, based on the corresponding target communication frequency band of the subordinate node, send the downlink communication data frame to at least one subordinate node 104, to instruct the subordinate node 104 to parse the downlink communication data frame to obtain the corresponding target communication frequency band, and make the subordinate node 104 obtain the corresponding data payload based on the target communication frequency band, send the uplink communication trigger frame to at least one subordinate node 104, in the case of receiving the uplink communication data frame sent by the subordinate node 104 based on the target communication frequency band, parse the uplink communication data frame to obtain the data payload corresponding to the subordinate node 104. Among them, the superior node 102 and the subordinate node 104 can be a terminal or a server. Among them, the terminal can be but not limited to various personal computers, notebook computers, smart phones, tablet computers, unmanned aerial vehicles, low-altitude aircraft, Internet of Things devices and portable wearable devices, Internet of Things devices can be smart speakers, smart televisions, smart air conditioners, smart vehicle-mounted devices, projection devices, etc. Portable wearable devices can be smart watches, smart bracelets, head-mounted devices, etc. The head-mounted device can be a virtual reality (VR) device, an augmented reality (AR) device, smart glasses, etc. The server can be a standalone physical server, or a server cluster or distributed system composed of multiple physical servers, or a cloud server providing cloud computing services.

[0055] In an exemplary embodiment, as shown, a power line broadband carrier communication method is provided, and the method is applied to the superior node 102 in the power line broadband carrier communication network as an example for description, including the following steps 202 to 210. Among them: Figure 2 Figure 1 The method is applied to the superior node 102 in the power line broadband carrier communication network as an example for description, including the following steps 202 to 210. Among them:

[0056] S202: Send the training frame to the subordinate node to instruct the subordinate node to obtain the signal-to-noise ratio of each communication frequency band according to the training frame.

[0057] Optionally, in the power line broadband carrier communication network, the superior node refers to the node in the network at a higher level, responsible for centralized control and management, usually with stronger computing ability, communication scheduling ability and data processing ability, while the subordinate node refers to the terminal node in the network at a lower level, managed and controlled by the superior node, usually with relatively simple functions, mainly responsible for data acquisition and instruction execution.

[0058] ​Optionally, the maximum available frequency band of the power line broadband carrier is generally (0.781-11.96) Mhz, the entire communication frequency band is divided into a plurality of sub-carrier frequency bands, and the sub-carrier frequency bands in good channel state can be selected for communication between two communication nodes according to the channel conditions. Specifically, the upper communication node (i.e., the upper node) can assign different sub-carrier frequency bands to a plurality of lower communication nodes (i.e., the lower nodes), and since the plurality of nodes use different communication frequency bands, concurrent communication can be performed at the same time without interference.

[0059] For example, as shown in Figure 3 , Figure 3 is a resource unit (RU) division diagram of orthogonal frequency division multiple access (OFDMA). In Figure 3 , (0.781-11.96) Mhz (corresponding to sub-carrier number 32-490) is divided into 14 RUs, and 7 sub-carriers are left as guard bands between different RUs. The upper and lower communication nodes can communicate with any RU as the communication frequency band.

[0060] Specifically, when assigning the RUs between the upper and lower communication nodes, the upper node sends an OFDMA training frame to the lower node, and after the lower node receives the training frame, it evaluates the signal-to-noise ratio of each RU and feeds it back to the upper node.

[0061] S204: Receive the signal-to-noise ratio information returned by the lower node, and assign the corresponding target communication frequency band to each lower node according to the signal-to-noise ratio information.

[0062] Optionally, after the upper node receives the signal-to-noise ratio feedback from the lower node, it evaluates the communication quality of each communication channel according to the signal-to-noise ratio and assigns appropriate target communication frequency bands to each lower node.

[0063] S206: Based on the target communication frequency band corresponding to the lower node, send a downlink communication data frame to at least one lower node to instruct the lower node to parse the downlink communication data frame to obtain the corresponding target communication frequency band, and make the lower node obtain the corresponding data payload based on the target communication frequency band; the downlink communication data frame carries an extended frame control field, and the extended frame control field is used to represent the target communication frequency band corresponding to the corresponding lower node.

[0064] Optionally, the downlink communication data frame is sent by the upper node to the lower node, and the upper node can send information to multiple lower nodes in different communication frequency bands in the same frame of data. Generally, the upper node can send information to at most 4 lower nodes at the same time. The downlink communication data frame carries an extended frame control field, and the lower node obtains the corresponding target communication frequency band by parsing the extended frame control field after receiving the downlink communication data frame, and obtains the corresponding data payload based on the target communication frequency band. The upper node sends the downlink communication data frame to different lower nodes through different target communication frequency bands.

[0065] S208: Send an uplink communication trigger frame to at least one lower node.

[0066] Optionally, the upper node sends an uplink communication trigger frame to the lower node based on the allocated target communication frequency band, and the lower node obtains the target communication frequency band allocated by the upper node from the trigger frame after receiving it. The uplink communication trigger frame and the training frame are both sent in the default optimal communication frequency band.

[0067] S210: In the case of receiving an uplink communication data frame sent by the lower node based on the target communication frequency band, parse the uplink communication data frame to obtain the data payload corresponding to the lower node.

[0068] Optionally, the upper node obtains the data payload transmitted by the lower node by parsing when receiving the uplink communication data frame sent by the lower node based on the target communication frequency band, realizes accurate reception of the uplink data, and completes a complete uplink-downlink communication closed loop.

[0069] In the above power line broadband carrier communication method, the upper node sends a training frame to the lower node to instruct the lower node to obtain the signal-to-noise ratio of each communication frequency band according to the training frame, and allocates a corresponding target communication frequency band according to the signal-to-noise ratio returned by the lower node. Based on the target communication frequency band corresponding to the lower node, the upper node sends a downlink communication data frame to at least one lower node to instruct the lower node to parse the downlink communication data frame to obtain the corresponding target communication frequency band, and to obtain the corresponding data payload based on the target communication frequency band. The upper node sends an uplink communication trigger frame to at least one lower node, and in the case of receiving an uplink communication data frame sent by the lower node based on the target communication frequency band, parses the uplink communication data frame to obtain the data payload corresponding to the lower node. The communication frequency band can be allocated in real time according to the communication quality, the utilization rate of the communication frequency band is improved, and the communication rate is improved.

[0070] In an exemplary embodiment, the method further comprises: receiving a first reply frame returned by the subordinate node based on the target communication frequency band; the first reply frame is used to indicate that the subordinate node successfully acquires the corresponding data payload based on the target communication frequency band; and receiving a second reply frame returned by the subordinate node based on the target communication frequency band; the second reply frame is used to indicate that the subordinate node successfully receives the uplink communication trigger frame.

[0071] Optionally, after the superior node sends the downlink communication data frame, the subordinate node returns a first reply frame to the superior node to indicate that the superior node successfully parses the data payload. Similarly, after the superior node sends the downlink communication trigger, the subordinate node returns a second reply frame to the superior node to indicate that the superior node successfully receives the uplink communication trigger frame.

[0072] In an exemplary embodiment, the training frame comprises a preamble frame header, a frame control field, and a training field; the preamble frame header and the frame control field are sent through a preset communication frequency band; the training field is sent through an available frequency band of the power line broadband carrier; and the training field is used to instruct the subordinate node to acquire the signal-to-noise ratio of each communication frequency band according to the training field.

[0073] Optionally, the training frame comprises a preamble frame header (PREAM), a frame control field (FC), and a training field (TF), wherein the preamble frame header and the frame control field are sent through a preset communication frequency band, the preset communication frequency band is a default communication frequency band of the power line broadband carrier communication network, and the training field is sent through an available frequency band of the power line broadband carrier. After receiving the training frame, the subordinate node evaluates the signal-to-noise ratio of each communication frequency band according to the training field.

[0074] In an exemplary embodiment, the downlink communication data frame comprises a preamble frame header, a frame control field, an extended frame control field, a target training field, and a target data payload; the extended frame control field is used to indicate the target communication frequency band corresponding to each subordinate node; the target training field comprises a training field allocated to each subordinate node; and the target data payload comprises a data payload allocated to each subordinate node.

[0075] Optionally, the downlink communication data frame comprises a preamble frame header (PREAM), a frame control field (FC), an extended frame control field (eFC), a target training field (TF) and a target payload (PL), wherein when the upper node simultaneously sends information to multiple lower nodes, the target training field comprises TF1-TF4, which are training fields respectively sent to lower node 1-lower node 4, and are used for channel estimation to assist demodulation of the PL; similarly, the target payload comprises PL1-PL4, which are payloads respectively sent to lower node 1-lower node 4.

[0076] In one exemplary embodiment, as shown in Figure 4 , a power line broadband carrier communication method is provided, which is applied to the lower node 104 in Figure 1 for example, and comprises the following steps 402-412. Wherein:

[0077] S402: receiving a training frame sent by the upper node, and obtaining the signal-to-noise ratio of each communication frequency band according to the training frame.

[0078] Optionally, after receiving the training frame sent by the upper node, the lower node evaluates the signal-to-noise ratio of each RU and feeds back to the upper node.

[0079] S404: sending the signal-to-noise ratio information to the upper node, so that the upper node allocates the corresponding target communication frequency band according to the signal-to-noise ratio information.

[0080] Optionally, the lower node sends the signal-to-noise ratio information to the upper node, and the upper node allocates the target communication frequency band of each lower node according to the signal-to-noise ratio information after receiving the signal-to-noise ratio information sent by all lower nodes.

[0081] S406: receiving a downlink communication data frame sent by the upper node based on the target communication frequency band, and parsing the downlink communication data frame to obtain the corresponding target communication frequency band; the downlink communication data frame carries an extended frame control field, which is used to represent the target communication frequency band corresponding to the lower node.

[0082] Optionally, after receiving the downlink communication data frame sent by the upper node, the lower node parses the downlink communication data frame to obtain the target communication frequency band allocated by the upper node.

[0083] S408: obtaining the corresponding data payload of the lower node based on the target communication frequency band.

[0084] Optionally, after obtaining the target communication frequency band, the lower node receives the data payload sent by the upper node on the target communication frequency band.

[0085] S410: receiving an uplink communication trigger frame sent by the upper node based on the target communication frequency band.

[0086] S412: sending an uplink communication data frame to the upper node based on the target communication frequency band, so that the upper node parses the uplink communication data frame to obtain the corresponding data payload.

[0087] Optionally, when there is an uplink communication demand, the lower node sends data to the upper node in the designated RU frequency band through the uplink communication data frame, and the upper node parses the corresponding data payload after receiving the uplink communication data frame.

[0088] In this embodiment, the lower node receives the training frame sent by the upper node, obtains the signal-to-noise ratio of each communication frequency band according to the training frame, and sends the signal-to-noise ratio information to the upper node, so that the upper node allocates the corresponding target communication frequency band according to the signal-to-noise ratio information, receives the downlink communication data frame sent by the upper node based on the target communication frequency band, parses the downlink communication data frame, obtains the corresponding target communication frequency band, obtains the corresponding data payload of the lower node based on the target communication frequency band, receives the uplink communication trigger frame sent by the upper node based on the target communication frequency band, and sends the uplink communication data frame to the upper node based on the target communication frequency band, so that the upper node parses the uplink communication data frame to obtain the corresponding data payload. It can allocate the communication frequency band in real time according to the communication quality, improve the utilization rate of the communication frequency band, and thus improve the communication rate.

[0089] In one exemplary embodiment, the method further comprises: sending a first reply acknowledgement frame to the upper node based on the target communication frequency band; the first reply acknowledgement frame is used to represent that the lower node successfully obtains the corresponding data payload based on the target communication frequency band; sending a second reply acknowledgement frame to the upper node based on the target communication frequency band; the second reply acknowledgement frame is used to represent that the lower node successfully receives the uplink communication trigger frame.

[0090] Optionally, after successfully obtaining the data payload, the lower node sends the first reply acknowledgement frame to the upper node to inform the upper node that the data payload is parsed successfully. Similarly, the lower node returns the second reply acknowledgement frame to the upper node to inform the upper node that the uplink communication trigger frame is successfully received.

[0091] In one exemplary embodiment, the uplink communication data frame includes a preamble frame header, a frame control field, a target training domain field, and a target data payload; the extended frame control field is used to represent the target communication frequency band corresponding to each lower node; the target training domain field includes the training domain of the lower node; and the target data payload includes the data payload of the lower node.

[0092] Optionally, the uplink communication data frame comprises a preamble frame header (PREAM), a frame control field (FC), a target training field (TF) and a target data payload (PL), wherein the target training field comprises a training field of the subordinate node, and the target data payload comprises a data payload of the subordinate node.

[0093] In one exemplary embodiment, as shown in Figure 5 A power line broadband carrier communication method is provided, the method comprising the steps of:

[0094] The superior node sends a training frame to the subordinate node to instruct the subordinate node to acquire signal-to-noise ratios of the communication frequency bands according to the training frame.

[0095] The training frame comprises a preamble frame header, a frame control field and a training field; the preamble frame header and the frame control field are sent through a preset communication frequency band; the training field is sent through an available frequency band of the power line broadband carrier; and the training field is used to instruct the subordinate node to acquire signal-to-noise ratios of the communication frequency bands according to the training field.

[0096] The superior node receives signal-to-noise ratio information returned by the subordinate node, and allocates corresponding target communication frequency bands to the subordinate nodes according to the signal-to-noise ratio information;

[0097] The superior node sends a downlink communication data frame to at least one subordinate node based on the target communication frequency band of the subordinate node, to instruct the subordinate node to parse the downlink communication data frame to obtain a corresponding target communication frequency band, and to enable the subordinate node to acquire a corresponding data payload based on the target communication frequency band; the downlink communication data frame carries an extended frame control field, and the extended frame control field is used to represent the target communication frequency band corresponding to the corresponding subordinate node.

[0098] The downlink communication data frame comprises a preamble frame header, a frame control field, an extended frame control field, a target training field and a target data payload; the extended frame control field is used to represent the target communication frequency bands corresponding to the subordinate nodes; the target training field comprises training fields allocated to the subordinate nodes; and the target data payload comprises data payloads allocated to the subordinate nodes.

[0099] The superior node receives a first reply frame returned by the subordinate node based on the target communication frequency band; and the first reply frame is used to represent that the subordinate node successfully acquires the corresponding data payload based on the target communication frequency band.

[0100] The superior node sends an uplink communication trigger frame to at least one subordinate node;

[0101] The superior node receives a second reply frame returned by the subordinate node based on the target communication frequency band; and the second reply frame is used to represent that the subordinate node successfully receives the uplink communication trigger frame.

[0102] The superior node parses the uplink communication data frame in a case that the uplink communication data frame sent by the subordinate node based on the target communication frequency band is received, and obtains the data payload corresponding to the subordinate node.

[0103] The uplink communication data frame comprises a preamble frame header, a frame control field, a target training field and a target data payload; the extended frame control field is used for indicating the target communication frequency band corresponding to each subordinate node; the target training field comprises the training field of the subordinate node; and the target data payload comprises the data payload of the subordinate node.

[0104] In the embodiment, the superior node sends a training frame to the subordinate node to instruct the subordinate node to acquire the signal-to-noise ratios of the communication frequency bands according to the training frame, and the subordinate node returns the signal-to-noise ratios to assign the corresponding target communication frequency band. Based on the target communication frequency band corresponding to the subordinate node, the superior node sends a downlink communication data frame to at least one subordinate node to instruct the subordinate node to parse the downlink communication data frame to obtain the corresponding target communication frequency band, and to acquire the corresponding data payload based on the target communication frequency band. The superior node sends an uplink communication trigger frame to at least one subordinate node. In a case that the uplink communication data frame sent by the subordinate node based on the target communication frequency band is received, the superior node parses the uplink communication data frame to obtain the data payload corresponding to the subordinate node. The communication frequency band can be allocated in real time according to the communication quality, the utilization rate of the communication frequency band is improved, and the communication rate is improved.

[0105] It should be understood that, although each step in the flowchart involved in the above embodiments is displayed in sequence according to the arrow, these steps are not necessarily executed in sequence according to the arrow. Unless otherwise specified herein, the execution of these steps is not strictly limited in sequence, and these steps can be executed in other sequences. Moreover, at least part of the steps in the flowchart involved in the above embodiments can comprise multiple steps or multiple stages, which are not necessarily executed at the same time, but can be executed at different times, and the execution sequence of these steps or stages is not necessarily sequential, but can be executed alternately or alternately with at least part of other steps or steps or stages in other steps. It can be understood that the steps in different embodiments can be freely combined as needed, and various non-contradictory schemes formed by the combination are within the scope of protection of the present application.

[0106] Based on the same inventive concept, the embodiments of the present application also provide a power line broadband carrier communication device for implementing the power line broadband carrier communication method described above. The implementation scheme for solving the problem provided by the device is similar to the implementation scheme described in the above method, so the specific limitations in one or more power line broadband carrier communication device embodiments provided below can refer to the limitations of the power line broadband carrier communication method described above, which will not be repeated here.

[0107] In one example embodiment, as shown in Figure 6 A power line broadband carrier communication device is provided, comprising: a training sending module 602, a signal-to-noise ratio receiving module 604, a downlink sending module 606, a trigger sending module 608, and an uplink analyzing module 610, wherein:

[0108] The training sending module 602 is configured to send a training frame to a subordinate node, so as to instruct the subordinate node to acquire the signal-to-noise ratio of each communication frequency band according to the training frame.

[0109] The signal-to-noise ratio receiving module 604 is configured to receive the signal-to-noise ratio information returned by the subordinate node, and allocate a corresponding target communication frequency band to each subordinate node according to the signal-to-noise ratio information.

[0110] The downlink sending module 606 is configured to send a downlink communication data frame to at least one subordinate node based on the target communication frequency band corresponding to the subordinate node, so as to instruct the subordinate node to analyze the downlink communication data frame to obtain the corresponding target communication frequency band, and make the subordinate node acquire the corresponding data payload based on the target communication frequency band; the downlink communication data frame carries an extended frame control field, and the extended frame control field is used to represent the target communication frequency band corresponding to the corresponding subordinate node.

[0111] The trigger sending module 608 is configured to send an uplink communication trigger frame to at least one subordinate node.

[0112] The uplink analyzing module 610 is configured to analyze the uplink communication data frame to obtain the data payload corresponding to the subordinate node, in a case that the uplink communication data frame sent by the subordinate node based on the target communication frequency band is received.

[0113] In one example embodiment, the uplink analyzing module 610 is further configured to receive a first reply acknowledgement frame returned by the subordinate node based on the target communication frequency band; the first reply acknowledgement frame is used to represent that the subordinate node successfully acquires the corresponding data payload based on the target communication frequency band; and receive a second reply acknowledgement frame returned by the subordinate node based on the target communication frequency band; the second reply acknowledgement frame is used to represent that the subordinate node successfully receives the uplink communication trigger frame.

[0114] In one example embodiment, the training frame involved in the training sending module 602 comprises a preamble frame header, a frame control field, and a training domain field; the preamble frame header and the frame control field are sent through a preset communication frequency band; the training domain field is sent through an available frequency band of the power line broadband carrier; and the training domain field is used to instruct the subordinate node to acquire the signal-to-noise ratio of each communication frequency band according to the training domain.

[0115] In an example embodiment, the downlink sending module 606 involves a downlink communication data frame including a preamble frame header, a frame control field, an extended frame control field, a target training field, and a target data payload; the extended frame control field is used to represent the target communication frequency band corresponding to each subordinate node; the target training field includes a training field allocated to each subordinate node; and the target data payload includes a data payload allocated to each subordinate node.

[0116] In an example embodiment, as shown in FIG. 7, a power line broadband carrier communication device is provided, including a signal-to-noise ratio obtaining module 702, a signal-to-noise ratio sending module 704, a downlink receiving module 706, a payload obtaining module 708, a trigger receiving module 710, and an uplink sending module 712, wherein: Figure 7

[0117] The signal-to-noise ratio obtaining module 702 is configured to receive a training frame sent by a superior node, and obtain the signal-to-noise ratio of each communication frequency band according to the training frame.

[0118] The signal-to-noise ratio sending module 704 is configured to send the signal-to-noise ratio information to the superior node, so that the superior node allocates a corresponding target communication frequency band according to the signal-to-noise ratio information.

[0119] The downlink receiving module 706 is configured to receive a downlink communication data frame sent by the superior node based on the target communication frequency band, parse the downlink communication data frame, and obtain the corresponding target communication frequency band; the downlink communication data frame carries an extended frame control field, and the extended frame control field is used to represent the target communication frequency band corresponding to the subordinate node.

[0120] The payload obtaining module 708 is configured to obtain the corresponding data payload of the subordinate node based on the target communication frequency band.

[0121] The trigger receiving module 710 is configured to receive an uplink communication trigger frame sent by the superior node based on the target communication frequency band.

[0122] The uplink sending module 712 is configured to send an uplink communication data frame to the superior node based on the target communication frequency band, so that the superior node parses the uplink communication data frame and obtains the corresponding data payload.

[0123] In an example embodiment, the uplink sending module 712 is further configured to send a first reply acknowledgement frame to the superior node based on the target communication frequency band; the first reply acknowledgement frame is used to represent that the subordinate node successfully obtains the corresponding data payload based on the target communication frequency band; and send a second reply acknowledgement frame to the superior node based on the target communication frequency band; the second reply acknowledgement frame is used to represent that the subordinate node successfully receives the uplink communication trigger frame.

[0124] ​In an exemplary embodiment, the uplink communication data frame involved by the uplink sending module 712 comprises a preamble frame header, a frame control field, a target training field and a target data payload; the extended frame control field is used to represent the target communication frequency band corresponding to each subordinate node; the target training field comprises the training field of the subordinate node; and the target data payload comprises the data payload of the subordinate node.

[0125] The modules in the power line broadband carrier communication device can be implemented by software, hardware or a combination thereof. The modules can be embedded in or independent of the processor in the computer device in hardware form, or stored in the memory in the computer device in software form, so as to be called and executed by the processor to perform the operations corresponding to the modules.

[0126] In an exemplary embodiment, a computer device, which can be a terminal, is provided, and an internal structure diagram of the computer device can be as shown in Figure 8 The computer device comprises a processor, a memory, an input / output interface, a communication interface, a display unit and an input device. The processor, the memory and the input / output interface are connected through a system bus, and the communication interface, the display unit and the input device are connected to the system bus through the input / output interface. The processor of the computer device is used to provide computing and control capabilities. The memory of the computer device comprises a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operating system and the computer program in the non-volatile storage medium to run. The input / output interface of the computer device is used to exchange information between the processor and external devices. The communication interface of the computer device is used to perform wired or wireless communication with external terminals. The wireless communication can be achieved through WIFI, mobile cellular network, near field communication (NFC) or other technologies. The computer program is executed by the processor to implement a power line broadband carrier communication method. The display unit of the computer device is used to form a visually visible picture, which can be a display screen, a projection device or a virtual reality imaging device. The display screen can be a liquid crystal display screen or an electronic ink display screen. The input device of the computer device can be a touch layer overlaid on the display screen, or a key, trackball or touchpad arranged on the shell of the computer device, or an external keyboard, touchpad or mouse, etc.

[0127] Those skilled in the art can understand that Figure 8 The structure shown in the above description is only a block diagram of part of the structure related to the scheme of the present application, and does not constitute a limitation on the computer device to which the scheme of the present application is applied. The specific computer device can comprise more or fewer components than those shown in the figure, or combine certain components, or have a different component arrangement.

[0128] In one example embodiment, a computer device is provided, comprising a memory and a processor, the memory storing a computer program, the processor implementing the following steps when executing the computer program: sending a training frame to a subordinate node to instruct the subordinate node to obtain a signal-to-noise ratio of each communication frequency band according to the training frame; receiving the signal-to-noise ratio information returned by the subordinate node, and allocating a corresponding target communication frequency band to each subordinate node according to the signal-to-noise ratio information; sending a downlink communication data frame to at least one subordinate node based on the corresponding target communication frequency band of the subordinate node, to instruct the subordinate node to parse the downlink communication data frame to obtain a corresponding target communication frequency band, and to cause the subordinate node to obtain a corresponding data payload based on the target communication frequency band; the downlink communication data frame carrying an extended frame control field, the extended frame control field being used to represent the target communication frequency band corresponding to the subordinate node; sending an uplink communication trigger frame to at least one subordinate node; in the case of receiving an uplink communication data frame sent by the subordinate node based on the target communication frequency band, parsing the uplink communication data frame to obtain the data payload corresponding to the subordinate node.

[0129] In one embodiment, the processor further implements the following steps when executing the computer program: receiving a first reply response frame returned by the subordinate node based on the target communication frequency band; the first reply response frame being used to represent that the subordinate node successfully obtains the corresponding data payload based on the target communication frequency band; receiving a second reply response frame returned by the subordinate node based on the target communication frequency band; the second reply response frame being used to represent that the subordinate node successfully receives the uplink communication trigger frame.

[0130] In one embodiment, the training frame involved when the processor executes the computer program comprises a preamble frame header, a frame control field and a training domain field; the preamble frame header and the frame control field are sent through a preset communication frequency band; the training domain field is sent through an available frequency band of a power line broadband carrier; the training domain field is used to instruct the subordinate node to obtain a signal-to-noise ratio of each communication frequency band according to the training domain.

[0131] In one embodiment, the downlink communication data frame involved when the processor executes the computer program comprises a preamble frame header, a frame control field, an extended frame control field, a target training domain field and a target data payload; the extended frame control field is used to represent the target communication frequency band corresponding to each subordinate node; the target training domain field comprises a training domain allocated to each subordinate node; the target data payload comprises a data payload allocated to each subordinate node.

[0132] In one example embodiment, a computer device is provided, comprising a memory and a processor, the memory storing a computer program, the processor implementing the following steps when executing the computer program: receiving a training frame sent by a superior node, obtaining a signal-to-noise ratio of each communication frequency band according to the training frame; sending the signal-to-noise ratio information to the superior node, so that the superior node allocates a corresponding target communication frequency band according to the signal-to-noise ratio information; receiving a downlink communication data frame sent by the superior node based on the target communication frequency band, parsing the downlink communication data frame to obtain the corresponding target communication frequency band; the downlink communication data frame carries an extended frame control field, the extended frame control field being used to represent the target communication frequency band corresponding to the subordinate node; obtaining the corresponding data payload of the subordinate node based on the target communication frequency band; receiving an uplink communication trigger frame sent by the superior node based on the target communication frequency band; sending an uplink communication data frame to the superior node based on the target communication frequency band, so that the superior node parses the uplink communication data frame to obtain the corresponding data payload.

[0133] In one embodiment, the processor further implements the following steps when executing the computer program: sending a first reply acknowledgement frame to the superior node based on the target communication frequency band; the first reply acknowledgement frame being used to represent that the subordinate node successfully obtains the corresponding data payload based on the target communication frequency band; returning a second reply acknowledgement frame to the superior node based on the target communication frequency band; the second reply acknowledgement frame being used to represent that the subordinate node successfully receives the uplink communication trigger frame.

[0134] In one embodiment, the uplink communication data frame involved by the processor when executing the computer program comprises a preamble frame header, a frame control field, a target training field and a target data payload; the extended frame control field is used to represent the target communication frequency band corresponding to each subordinate node; the target training field comprises the training field of the subordinate node; the target data payload comprises the data payload of the subordinate node.

[0135] In one embodiment, a computer readable storage medium is provided, storing a computer program thereon, the computer program being executed by a processor to implement the following steps: sending a training frame to a subordinate node, to instruct the subordinate node to obtain a signal-to-noise ratio of each communication frequency band according to the training frame; receiving signal-to-noise ratio information returned by the subordinate node, and allocating a corresponding target communication frequency band to each subordinate node according to the signal-to-noise ratio information; based on the target communication frequency band corresponding to the subordinate node, sending a downlink communication data frame to at least one subordinate node, to instruct the subordinate node to parse the downlink communication data frame to obtain the corresponding target communication frequency band, and to enable the subordinate node to obtain the corresponding data payload based on the target communication frequency band; the downlink communication data frame carries an extended frame control field, the extended frame control field being used to represent the target communication frequency band corresponding to the corresponding subordinate node; sending an uplink communication trigger frame to at least one subordinate node; in the case of receiving an uplink communication data frame sent by the subordinate node based on the target communication frequency band, parsing the uplink communication data frame to obtain the data payload corresponding to the subordinate node.

[0136] In one embodiment, the computer program, when executed by the processor, further implements the following steps: receiving a first reply response frame returned by the subordinate node based on the target communication frequency band; the first reply response frame is used to represent that the subordinate node succeeds in obtaining the corresponding data payload based on the target communication frequency band; receiving a second reply response frame returned by the subordinate node based on the target communication frequency band; the second reply response frame is used to represent that the subordinate node succeeds in receiving the uplink communication trigger frame.

[0137] In one embodiment, the training frame involved when the computer program is executed by the processor includes a preamble frame header, a frame control field and a training field; the preamble frame header and the frame control field are sent through the preset communication frequency band; the training field is sent through the available frequency band of the power line broadband carrier; the training field is used to instruct the subordinate node to obtain the signal-to-noise ratio of each communication frequency band according to the training field.

[0138] In one embodiment, the downlink communication data frame involved when the computer program is executed by the processor includes a preamble frame header, a frame control field, an extended frame control field, a target training field and a target data payload; the extended frame control field is used to represent the target communication frequency band corresponding to each subordinate node; the target training field includes the training field allocated to each subordinate node; the target data payload includes the data payload allocated to each subordinate node.

[0139] In one embodiment, a computer readable storage medium is provided, and the computer readable storage medium stores a computer program. When the computer program is executed by a processor, the following steps are implemented: receiving a training frame sent by a superior node, and obtaining the signal-to-noise ratio of each communication frequency band according to the training frame; sending the signal-to-noise ratio information to the superior node, so that the superior node allocates the corresponding target communication frequency band according to the signal-to-noise ratio information; receiving a downlink communication data frame sent by the superior node based on the target communication frequency band, analyzing the downlink communication data frame, and obtaining the corresponding target communication frequency band; the downlink communication data frame carries an extended frame control field, and the extended frame control field is used to represent the target communication frequency band corresponding to the subordinate node; obtaining the corresponding data payload of the subordinate node based on the target communication frequency band; receiving an uplink communication trigger frame sent by the superior node based on the target communication frequency band; and sending an uplink communication data frame to the superior node based on the target communication frequency band, so that the superior node analyzes the uplink communication data frame and obtains the corresponding data payload.

[0140] In one embodiment, the computer program, when executed by the processor, further implements the following steps: sending a first reply response frame to the superior node based on the target communication frequency band; the first reply response frame is used to represent that the subordinate node succeeds in obtaining the corresponding data payload based on the target communication frequency band; returning a second reply response frame to the superior node based on the target communication frequency band; the second reply response frame is used to represent that the subordinate node succeeds in receiving the uplink communication trigger frame.

[0141] In one embodiment, the uplink communication data frame involved when the computer program is executed by the processor includes a preamble frame header, a frame control field, a target training field, and a target data payload; the extended frame control field is used to represent the target communication frequency band corresponding to each subordinate node; the target training field includes the training field of the subordinate node; and the target data payload includes the data payload of the subordinate node.

[0142] In one embodiment, a computer program product is provided, which includes a computer program that, when executed by a processor, implements the following steps: sending a training frame to a subordinate node to instruct the subordinate node to obtain the signal-to-noise ratio of each communication frequency band according to the training frame; receiving the signal-to-noise ratio information returned by the subordinate node, and allocating a corresponding target communication frequency band to each subordinate node according to the signal-to-noise ratio information; based on the target communication frequency band corresponding to the subordinate node, sending a downlink communication data frame to at least one subordinate node to instruct the subordinate node to parse the downlink communication data frame to obtain the corresponding target communication frequency band, and to enable the subordinate node to obtain the corresponding data payload based on the target communication frequency band; the downlink communication data frame carries an extended frame control field, which is used to represent the target communication frequency band corresponding to the corresponding subordinate node; sending an uplink communication trigger frame to at least one subordinate node; in the case of receiving an uplink communication data frame sent by the subordinate node based on the target communication frequency band, parsing the uplink communication data frame to obtain the data payload corresponding to the subordinate node.

[0143] In one embodiment, the computer program, when executed by the processor, further implements the following steps: receiving a first reply frame returned by the subordinate node based on the target communication frequency band; the first reply frame is used to represent that the subordinate node successfully obtains the corresponding data payload based on the target communication frequency band; receiving a second reply frame returned by the subordinate node based on the target communication frequency band; the second reply frame is used to represent that the subordinate node successfully receives the uplink communication trigger frame.

[0144] In one embodiment, the training frame involved when the computer program is executed by the processor includes a preamble frame header, a frame control field, and a training field; the preamble frame header and the frame control field are sent through a preset communication frequency band; the training field is sent through an available frequency band of a power line broadband carrier; and the training field is used to instruct the subordinate node to obtain the signal-to-noise ratio of each communication frequency band according to the training field.

[0145] In one embodiment, the downlink communication data frame involved when the computer program is executed by the processor includes a preamble frame header, a frame control field, an extended frame control field, a target training field, and a target data payload; the extended frame control field is used to represent the target communication frequency band corresponding to each subordinate node; the target training field includes the training field allocated to each subordinate node; and the target data payload includes the data payload allocated to each subordinate node.

[0146] In one embodiment, a computer program product is provided, comprising a computer program which, when executed by a processor, implements the following steps: receiving a training frame sent by a superior node, obtaining a signal-to-noise ratio of each communication frequency band according to the training frame; sending the signal-to-noise ratio information to the superior node, so that the superior node allocates a corresponding target communication frequency band according to the signal-to-noise ratio information; receiving a downlink communication data frame sent by the superior node based on the target communication frequency band, parsing the downlink communication data frame to obtain the corresponding target communication frequency band; the downlink communication data frame carries an extended frame control field, and the extended frame control field is used to represent the target communication frequency band corresponding to the subordinate node; obtaining the corresponding data payload of the subordinate node based on the target communication frequency band; receiving an uplink communication trigger frame sent by the superior node based on the target communication frequency band; sending an uplink communication data frame to the superior node based on the target communication frequency band, so that the superior node parses the uplink communication data frame to obtain the corresponding data payload.

[0147] In one embodiment, the computer program, when executed by the processor, further implements the following steps: sending a first reply response frame to the superior node based on the target communication frequency band; the first reply response frame is used to represent that the subordinate node successfully obtains the corresponding data payload based on the target communication frequency band; returning a second reply response frame to the superior node based on the target communication frequency band; the second reply response frame is used to represent that the subordinate node successfully receives the uplink communication trigger frame.

[0148] In one embodiment, the uplink communication data frame involved when the computer program is executed by the processor includes a preamble frame header, a frame control field, a target training domain field, and a target data payload; the extended frame control field is used to represent the target communication frequency band corresponding to each subordinate node; the target training domain field includes the training domain of the subordinate node; and the target data payload includes the data payload of the subordinate node.

[0149] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program. The computer program can be stored in a non-volatile computer readable storage medium, and when executed, can include the processes of the above-mentioned embodiment methods. Any reference to memory, database or other medium used in the embodiments provided in the present application can include at least one of non-volatile memory and volatile memory. The non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical storage, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetoresistive random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. The volatile memory can include random access memory (RAM) or external cache memory, etc. As an illustration but not limitation, the RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM), etc. The database involved in the embodiments provided in the present application can include at least one of a relational database and a non-relational database. The non-relational database can include a distributed database based on a block chain, etc., without being limited thereto. The processor involved in the embodiments provided in the present application can be a general-purpose processor, a central processing unit, a graphics processing unit, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, an artificial intelligence (AI) processor, etc., without being limited thereto.

[0150] The technical features of the above embodiments can be combined in any manner. To make the description concise, all possible combinations of the technical features in the above embodiments are not described, but as long as the combinations of the technical features do not exist contradictions, they should be considered as the scope of the present application.

[0151] The above-described embodiments are merely illustrative of several embodiments of the present application, and the description is relatively specific and detailed, but should not be understood as a limitation on the scope of the patent. It should be noted that for those skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are all within the scope of the present application. Therefore, the scope of protection of the present application should be subject to the appended claims.

Claims

1. A power line broadband carrier communication method, characterized in that, An upper-level node applied to a power line broadband carrier communication network; the method includes: Send training frames to lower-level nodes to instruct the lower-level nodes to obtain the signal-to-noise ratio of each communication frequency band based on the training frames; Receive the signal-to-noise ratio (SNR) information returned by the lower-level nodes, and allocate corresponding target communication frequency bands to each of the lower-level nodes according to the SNR information; Based on the target communication frequency band corresponding to the lower-level node, a downlink communication data frame is sent to at least one of the lower-level nodes to instruct the lower-level node to parse the downlink communication data frame to obtain the corresponding target communication frequency band, and to enable the lower-level node to obtain the corresponding data payload based on the target communication frequency band; the downlink communication data frame carries an extended frame control field, which is used to characterize the target communication frequency band corresponding to the lower-level node. Send an uplink communication trigger frame to at least one of the lower-level nodes; Upon receiving an uplink communication data frame sent by the lower-level node based on the target communication frequency band, the uplink communication data frame is parsed to obtain the data payload corresponding to the lower-level node.

2. The method according to claim 1, characterized in that, The method further includes: The system receives a first response frame from the lower-level node based on the target communication frequency band; the first response frame indicates that the lower-level node has successfully acquired the corresponding data payload based on the target communication frequency band. The lower-level node receives a second response frame based on the target communication frequency band; the second response frame indicates that the lower-level node has successfully received the uplink communication trigger frame.

3. The method according to claim 1, characterized in that, The training frame includes a preamble header, a frame control field, and a training field; the preamble header and the frame control field are transmitted via a preset communication frequency band; the training field is transmitted via an available frequency band of a power line broadband carrier; the training field is used to instruct the lower-level node to obtain the signal-to-noise ratio of each communication frequency band according to the training field.

4. The method according to claim 1, characterized in that, The downlink communication data frame includes a preamble header, a frame control field, an extended frame control field, a target training domain field, and a target data payload; the extended frame control field is used to characterize the target communication frequency band corresponding to each of the lower-level nodes; the target training domain field includes the training domain allocated to each of the lower-level nodes; and the target data payload includes the data payload allocated to each of the lower-level nodes.

5. A power line broadband carrier communication method, characterized in that, Applied to lower-level nodes in power line broadband carrier communication networks; the method includes: Receive training frames sent by the upper-level node, and obtain the signal-to-noise ratio of each communication frequency band based on the training frames; The signal-to-noise ratio (SNR) information is sent to the upstream node so that the upstream node allocates the corresponding target communication frequency band based on the SNR information. The system receives downlink communication data frames sent by the upper-level node based on the target communication frequency band, parses the downlink communication data frames to obtain the corresponding target communication frequency band, and the downlink communication data frames carry an extended frame control field, which is used to characterize the target communication frequency band corresponding to the lower-level node. The corresponding data payload of the lower-level node is obtained based on the target communication frequency band; Receive the uplink communication trigger frame sent by the superior node; Based on the target communication frequency band, an uplink communication data frame is sent to the upper-level node, so that the upper-level node can parse the uplink communication data frame and obtain the corresponding data payload.

6. The method according to claim 5, characterized in that, The method further includes: The lower-level node sends a first response frame to the upper-level node based on the target communication frequency band; the first response frame is used to indicate that the lower-level node has successfully acquired the corresponding data payload based on the target communication frequency band. The lower-level node returns a second response frame to the upper-level node based on the target communication frequency band; the second response frame is used to indicate that the lower-level node has successfully received the uplink communication trigger frame.

7. The method according to claim 5, characterized in that, The uplink communication data frame includes a preamble header, a frame control field, a target training domain field, and a target data payload; the extended frame control field is used to characterize the target communication frequency band corresponding to each of the lower-level nodes; the target training domain field includes the training domain of the lower-level node; and the target data payload includes the data payload of the lower-level node.

8. A power line broadband carrier communication scheduling device, characterized in that, An upper-level node applied to a power line broadband carrier communication network; the device includes: The training sending module is used to send training frames to lower-level nodes to instruct the lower-level nodes to obtain the signal-to-noise ratio of each communication frequency band based on the training frames. The signal-to-noise ratio (SNR) receiving module is used to receive the SNR information returned by the lower-level nodes and allocate corresponding target communication frequency bands to each of the lower-level nodes according to the SNR information. The downlink transmission module is configured to send downlink communication data frames to at least one of the lower-level nodes based on the corresponding target communication frequency band of the lower-level node, so as to instruct the lower-level node to parse the downlink communication data frame to obtain the corresponding target communication frequency band, and enable the lower-level node to obtain the corresponding data payload based on the target communication frequency band; the downlink communication data frame carries an extended frame control field, which is used to characterize the target communication frequency band corresponding to the lower-level node; The triggering module sends an uplink communication trigger frame to at least one of the lower-level nodes; The uplink parsing module is used to parse the uplink communication data frame sent by the lower-level node based on the target communication frequency band to obtain the data payload corresponding to the lower-level node.

9. A power line broadband carrier communication dispatching device, characterized in that, A lower-level node applied to a power line broadband carrier communication network; the device includes: The signal-to-noise ratio (SNR) acquisition module is used to receive training frames sent by the upper-level node and acquire the SNR of each communication frequency band based on the training frames. The signal-to-noise ratio (SNR) transmission module is used to send SNR information to the upper-level node so that the upper-level node can allocate the corresponding target communication frequency band according to the SNR information. The downlink receiving module is used to receive downlink communication data frames sent by the upper-level node based on the target communication frequency band, parse the downlink communication data frames, and obtain the corresponding target communication frequency band; the downlink communication data frames carry an extended frame control field, which is used to characterize the target communication frequency band corresponding to the lower-level node; The payload acquisition module is used to acquire the corresponding data payload of the lower-level node based on the target communication frequency band. The trigger receiving module is used to receive the uplink communication trigger frame sent by the upper-level node; The uplink transmission module is used to send uplink communication data frames to the upper-level node based on the target communication frequency band, so that the upper-level node can parse the uplink communication data frames and obtain the corresponding data payload.

10. A computer device comprising a memory and a processor, wherein the memory stores a computer program, characterized in that, When the processor executes the computer program, it implements the steps of the method according to any one of claims 1 to 7.

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