CN120049913A

CN120049913A - Communication mode selection method and related device

Info

Publication number: CN120049913A
Application number: CN202311610272.9A
Authority: CN
Inventors: 李坤和; 汪海龙; 万剑; 刘阳
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2023-11-27
Filing date: 2023-11-27
Publication date: 2025-05-27
Also published as: WO2025112917A1

Abstract

The embodiment of the application provides a communication mode selection method and a related device, wherein the method is applied to a first node, the method comprises the steps of obtaining a first quality index corresponding to a first detection message and a second quality index corresponding to a second detection message in various communication modes, wherein the quality indexes comprise a data receiving and transmitting success rate and other indexes, the other indexes comprise signal to noise ratio and/or channel attenuation, the first detection message is a detection message sent by the first node to the second node, the second detection message is a message sent by the second node to the first node, determining the communication success rate of each communication mode according to the first quality index and the second quality index, and communicating with the second node in the first communication mode, wherein the communication success rate and the communication rate meet the communication mode of preset conditions. By adopting the embodiment of the application, the communication channels with higher reliability and higher communication rate can be selected from more communication channels for communication.

Description

Communication mode selection method and related device

Technical Field

The present application relates to the field of power line communication technologies, and in particular, to a communication method and related device.

Background

The power line communication (Power Line Communication, PLC) technology has been widely applied to low-voltage transformer areas of the power grid, but along with the expansion of the service of a novel power system, the application of the power line communication of the low-voltage transformer areas is not limited to the ammeter reading service of traditional electricity information collection, the communication networking requirements of the services such as line branch monitoring, photovoltaic grid connection, charging piles and the like are increasingly highlighted, the requirements of the data volume, the real-time performance and the reliability of interaction among the stations are gradually upgraded while the number of stations accessing the network are increased, the bandwidth and the reliability of the PLC communication become bottlenecks of new equipment access and new service development, and the physical topology of the low-voltage transformer areas is shown in figure 1. In a power line communication environment of a low-voltage power grid station, low-frequency noise is large but attenuation is small, high-frequency noise is small but attenuation is large, and the distance between devices which need to be networked by using a power line communication technology in the low-voltage power grid station is long, generally varies from several meters to tens of meters, and certain requirements are also placed on the reliable communication distance of power line communication, so that under the condition of considering factors such as noise, attenuation and the like, the spectrum resources which can be used for power line communication become very limited. Under the condition that available spectrum resources are limited, a multiple-input multiple-output (Multiple Input Multiple Output, MIMO) technology realized by using three-phase four-wire (A, B, C three-phase line, N is zero line as shown in fig. 2) becomes an effective technical scheme for improving the communication rate and the anti-interference capability of the PLC.

How to select an optimal communication connection mode between communication rates and communication reliability between stations with MIMO capability is a technical problem that those skilled in the art are researching.

Disclosure of Invention

The embodiment of the application provides a communication mode selection method and a related device, which can select a communication channel with higher reliability and higher communication rate from more communication channels to communicate.

In a first aspect, an embodiment of the present application provides a communication manner selection method, which is applied to a first node, where the method includes:

Acquiring a first quality index corresponding to a first detection message and a second quality index corresponding to a second detection message in each communication mode, wherein the quality indexes comprise a data receiving and transmitting success rate and other indexes, the other indexes comprise signal to noise ratio and/or channel attenuation, the first detection message is a detection message sent by a first node to a second node, and the second detection message is a message sent by the second node to the first node;

determining the communication success rate of each communication mode according to the first quality index and the second quality index;

and communicating with the second node through a first communication mode, wherein the communication success rate and the communication rate meet the communication mode of preset conditions.

In the above method, in the design of the MIMO communication channels, more communication channels are realized by changing the number of the transmission channels T, the number of the reception channels R and the number of the data streams S, so that more choices are provided, and in addition, by the constraint of the communication success rate and the communication rate, a communication channel with higher reliability and higher communication rate can be selected from more communication channels to perform communication.

With reference to the first aspect, in one possible implementation manner of the first aspect,

The preset condition comprises the highest communication rate in the communication mode with the communication success rate larger than a first threshold N, or

The preset condition includes that the communication success rate is highest in the communication modes with the communication rate larger than the second threshold M.

With reference to the first aspect, or any one of the foregoing possible implementation manners of the first aspect, in a further possible implementation manner of the first aspect, the method further includes:

periodically evaluating the real-time target communication success rate of the first communication mode;

and if the target communication success rate is lower than a preset threshold, returning to the step of acquiring the quality index corresponding to the first detection message and the quality index corresponding to the second detection message in each of the multiple communication modes.

In the implementation manner, the selected first communication mode can be monitored regularly, if the related performance of the first communication mode is obviously reduced, the communication mode is selected again, so that communication can be always performed between the first node and the second node based on the communication mode with better performance, and the reliability and the higher communication rate of communication are ensured.

With reference to the first aspect or any one of the foregoing possible implementation manners of the first aspect, in a further possible implementation manner of the first aspect, the x sending channels and the y receiving channels each belong to a channel formed by a three-phase four-wire power line, and the z data streams are used for transmission on the x sending channels and the y receiving channels.

In such an implementation, the above-described communication scheme is selected to be particularly applicable in a three-phase four-wire power line scenario.

With reference to the first aspect or any one of the foregoing possible implementation manners of the first aspect, in a further possible implementation manner of the first aspect, the other indicators include a signal-to-noise ratio and a channel attenuation, and the determining the communication success rate of each communication manner according to the first quality indicator and the second quality indicator includes:

Determining the comprehensive data receiving and transmitting success rate under each communication mode according to the data receiving and transmitting success rate corresponding to the first detection message under each communication mode and the data receiving and transmitting success rate corresponding to the second detection message under each communication mode;

Determining a comprehensive signal-to-noise ratio under each communication mode according to the signal-to-noise ratio corresponding to the first detection message under each communication mode and the signal-to-noise ratio corresponding to the second detection message under each communication mode;

determining the comprehensive channel attenuation under each communication mode according to the channel attenuation corresponding to the first detection message under each communication mode and the channel attenuation corresponding to the second detection message under each communication mode;

and determining the communication success rate of each communication mode according to the comprehensive data receiving and transmitting success rate, the comprehensive signal-to-noise ratio and the comprehensive channel attenuation under each communication mode.

With reference to the first aspect or any one of the foregoing possible implementation manners of the first aspect, in a further possible implementation manner of the first aspect, the obtaining a first quality index corresponding to a first detection message and a second quality index corresponding to a second detection message in each of multiple communication manners includes:

Sending a first detection message to the second node;

receiving a first quality index generated when the second node feeds back the first detection message;

receiving a second detection message sent by the second node;

And generating a second quality index according to the receiving condition of the second message.

With reference to the first aspect or any one of the foregoing possible implementation manners of the first aspect, in a further possible implementation manner of the first aspect, before the acquiring a first quality index corresponding to a first detection packet and a second quality index corresponding to a second detection packet in each of multiple communication manners, the method further includes:

and receiving first capability indication information sent by a second node, wherein the first capability indication information is used for indicating the second node to support a MIMO communication mode.

In the implementation mode, the second node is emphasized to notify the first node of own communication capability, and the communication mode for communicating with the second node is selected by using the method only when the first node knows that the second node supports the MIMO communication mode, so that the application pertinence of the selected communication method is improved, and the situation that the selected communication mode cannot be used or has poor use effect is avoided.

receiving second capability indication information sent by a third stage, wherein the second capability indication information is used for indicating that the third stage supports a SISO communication mode;

And communicating with the third node through a second communication mode, wherein the second communication mode is used for transmitting data through 1 sending channel, receiving data through 1 receiving channel and transmitting 1 data stream.

In this implementation, in addition to supporting selection of the MIMO communication scheme, support of the SISO communication scheme is provided, so hybrid networking can be supported, and new means (i.e., the MIMO communication scheme) are introduced to improve communication throughput while being compatible with the existing standard.

In a second aspect, an embodiment of the present application provides a communication manner selecting apparatus, applied to a first node, including:

The system comprises an acquisition unit, a data transmission unit, a data receiving unit and a data transmission unit, wherein the acquisition unit is used for acquiring a first quality index corresponding to a first detection message and a second quality index corresponding to a second detection message in various communication modes, the quality indexes comprise a data receiving and transmitting success rate and other indexes, the other indexes comprise signal to noise ratio and/or channel attenuation, the first detection message is a detection message sent by a first node to a second node, and the second detection message is a message sent by the second node to the first node;

A determining unit, configured to determine a communication success rate of each communication mode according to the first quality index and the second quality index;

And the communication unit is used for communicating with the second node through a first communication mode, wherein the communication success rate and the communication rate meet the communication mode of preset conditions.

With reference to the second aspect, in a possible implementation manner of the second aspect,

With reference to the second aspect, or any one of the foregoing possible implementations of the second aspect, in a further possible implementation of the second aspect:

the determining unit is further used for periodically evaluating the real-time target communication success rate of the first communication mode;

And if the target communication success rate is lower than a preset threshold value, triggering the acquisition unit to execute the operation of acquiring the quality index corresponding to the first detection message and the quality index corresponding to the second detection message in each of the multiple communication modes.

With reference to the second aspect, or any one of the foregoing possible implementation manners of the second aspect, in a further possible implementation manner of the second aspect, the x sending channels and the y receiving channels each belong to a channel formed by a three-phase four-wire power line, and the z data streams are used for transmission on the x sending channels and the y receiving channels.

With reference to the second aspect, or any one of the foregoing possible implementation manners of the second aspect, in a further possible implementation manner of the second aspect, the other indicators include a signal-to-noise ratio and a channel attenuation, the determining unit is specifically configured to:

With reference to the second aspect, or any one of the foregoing possible implementations of the second aspect, in a further possible implementation of the second aspect, the method comprises the steps of obtaining a first quality index corresponding to a first detection message and a second quality index corresponding to a second detection message in each of a plurality of communication modes, the acquisition unit is specifically configured to:

Sending a first detection message to the second node;

receiving a second detection message sent by the second node;

The communication unit is further configured to receive first capability indication information sent by a second node before the obtaining unit obtains a first quality index corresponding to a first detection message and a second quality index corresponding to a second detection message in each of multiple communication modes, where the first capability indication information is used to indicate that the second node supports a MIMO communication mode.

The communication unit is further configured to receive second capability indication information sent by a third stage, where the second capability indication information is used to indicate that the third stage supports a SISO communication mode;

the communication unit is further configured to communicate with the third node through a second communication manner, where the second communication manner performs data transmission through 1 transmission channel, performs data reception through 1 reception channel, and is configured to transmit 1 data stream.

In a third aspect, an embodiment of the present application provides a communication manner selecting apparatus, applied to a first node, where the apparatus includes a processor, a memory, and a communication interface, where the memory is configured to store a computer program, and the communication interface is configured to perform a data transceiving operation under a call of the processor, and the processor is configured to call the computer program to implement the method described in the first aspect or any one of possible implementations of the first aspect.

In a fourth aspect, an embodiment of the present application provides a first node, the first node including the communication mode selection apparatus described in the second aspect or any one of possible implementation manners of the second aspect or the third aspect.

In a fifth aspect, embodiments of the present application provide a computer readable storage medium for storing a computer program which, when called by a processor, implements the method described in the first aspect or any one of the possible implementations of the first aspect.

In a sixth aspect, an embodiment of the present application provides a communication system, where the communication system includes a first node and a second node, and the first node and the second node may be the first node and the second node described in any possible implementation manner of the first aspect or the second aspect. Optionally, the communication system may further comprise a third node, which is a third node in one possible implementation of the first aspect.

Drawings

Fig. 1 is a physical topology schematic diagram of a low-voltage area according to an embodiment of the present application;

fig. 2 is a physical topology schematic diagram of a three-phase four-wire power grid according to an embodiment of the present application;

Fig. 3 is a schematic diagram of a PLC system according to an embodiment of the present application;

Fig. 4 is a schematic diagram of a MIMO connection scheme according to an embodiment of the present application;

fig. 5 is a schematic diagram of a MIMO communication scheme selection flow provided in an embodiment of the present application;

fig. 6 is a schematic diagram of an architecture of a power communication system according to an embodiment of the present application;

Fig. 7 is a flow chart of a communication mode selection method according to an embodiment of the present application;

fig. 8 is a schematic structural diagram of a communication mode selecting device according to an embodiment of the present application;

Fig. 9 is a schematic structural diagram of another communication mode selection device according to an embodiment of the present application.

Detailed Description

There are also some studies on how to select an appropriate communication scheme between communication rate and communication reliability between stations:

For example, power line mode selection is performed between a 100MHz frequency band MIMO mode and a 200MHz frequency band single-in single-out (Single Input Single Output, SISO) mode according to different services and scenes, and channel evaluation is performed specifically through a sounding frame in the selection process, for example, channel evaluation is performed according to the signal-to-noise ratio, channel capacity, service bandwidth and the like of the sounding frame received and transmitted between stations, so that performance and stability of a PLC system are improved, and meanwhile, large-bandwidth system transmission is realized. As shown in fig. 3, the power line communication modem 100 communicates with the power line communication modem 200, in which the power line includes a live wire, a null wire and a protection ground wire, the communication frequency band includes 0-100 mhz, 100-200 mhz and 0-200 mhz, the connection modes in the scene are MIMO and SISO modes between the live wire, the null wire and the protection ground wire, and the frequency band and connection modes are switched between three frequency bands of 0-100 mhz, 100-200 mhz and 0-200 mhz, and the switching and use of the three-phase four-wire connection modes are not involved in the process.

As another example, a communication device operable to divide MIMO communications between a powerline medium and a non-PLC medium, such as coaxial cable, cat-5 cable, includes a PLC interface operable to couple at least two different communication signals to at least two pairs of different communication signals of at least three conductors of the powerline medium. The processing module and the PLC interface of the device interact with a remote PLC device to determine a connection of the remote PLC device to the PLC device via at least three conductors of a power line medium, select at least two conductor pairs of the power line medium, communicatively couple the PLC device to the remote PLC device for Multiple Input Multiple Output (MIMO) signal service, and simultaneously transmit MIMO PLC signals to the remote PLC device through the at least two conductors, the scheme evaluates channel quality through an interactive frame to select a communication mode (or line mode), the wiring mode of the scheme is shown in fig. 4, and the execution flow is shown in fig. 5.

Whether the scheme shown in fig. 3 or the scheme shown in fig. 5, the performance of the selected communication connection mode still needs to be improved.

Fig. 6 is a schematic diagram of an architecture of an electric power communication system according to an embodiment of the present application, where the architecture includes at least a first node 601 and a second node 602, where the first node 601 and the second node 602 may be any two nodes or devices that are electrically connected through wires in a MIMO scenario based on three-phase four-wire implementation, for example, the first node 601 is a convergence terminal, the second node 602 is a branch circuit breaker, and for example, the first node 601 and the second node 602 are both branch circuit breakers.

It can be seen that in the architecture shown in fig. 6, MIMO based on a three-phase four-wire implementation comprises six connection lines, each phase line and neutral line forming a communication line.

Referring to fig. 7, fig. 7 is a flowchart of a communication mode selection method according to an embodiment of the present application, where the method may be implemented based on the architecture shown in fig. 6, or may be implemented based on other architectures, and the method includes, but is not limited to, the following steps:

and step S700, the first node sends a third capability indication to the second node and the third node.

In the embodiment of the application, the capability indication is used for indicating the communication capability of the self, such as supporting a communication mode, supporting a signal coding and decoding algorithm, supporting a coding algorithm and the like, and the capability indication sent by the first node to other nodes (such as a second node and a third node) is used for informing the other nodes of the communication capability of the self, and is called a third capability indication. It will be appreciated that by indicating its communication capabilities to other nodes, the other nodes may choose a suitable (or adapted) way (e.g., communication mode, codec algorithm, encryption algorithm, etc.) to communicate with themselves, otherwise the double-shot may not be able to successfully complete the communication.

The first node may send the third capability indication to the other nodes in a unicast manner, or may be broadcast, or may send the third capability indication periodically, or may send the third capability indication when a certain preset condition is met, for example, when the third capability indication needs to be communicated with a certain node, the third capability indication is sent to the certain node.

In the embodiment of the application, the communication modes can at least comprise a MIMO communication mode and a SISO communication mode from a large category.

In the embodiment of the present application, taking a three-phase four-wire scenario as an example, the MIMO communication method at least may include the following cases:

1T2R1S, 1T3R1S, 2T3R2S, 2T2R1S, 2T2R2S, 3T3R1S, 3T3R2S, 3T3R3S, wherein:

(1) T denotes transmit, R denotes receive, S denotes data stream, xTyRzS denotes x transmit channels, y receive channels, and z data streams. Thus, in the above example, at least 9 specific communication methods are included in the MIMO communication method.

(2) When the number y of the receiving channels is equal to the number x of the transmitting channels, the lines of the receiving channels are the same as those of the transmitting channels and correspond to each other one by one, and when the number y of the receiving channels is larger than the number x of the transmitting channels, the lines of x channels in the receiving channels are the same as those of x transmitting channels and correspond to each other one by one, and the rest (y-x) receiving channels in the receiving channels are selected from the rest unoccupied lines in the three-phase four-wire system to serve as the receiving channels.

(3) The data stream refers to the amount of data transmitted in a channel, the multiple transmission channels 1 data stream refers to transmitting the same data stream on multiple transmission channels, and the multiple transmission channels 2 data stream refers to transmitting two different data streams on multiple transmission channels, respectively.

In the embodiment of the application, taking a phase line and a zero line as an example, the SISO communication mode refers to a single-channel line formed by a phase line and a zero line, and data is received and sent through the single channel, and a (or a) data stream is sent.

In an alternative scheme, the MIMO communication mode may further include a special case of 1T1R1S, that is, even in a three-phase four-wire power line structure, communication may still be performed through a set of wires (1 phase line+1 zero line).

Generally, the performance of the communication modes of different sending channels T, receiving channels R and data streams S will be different, for example:

(1) xTyR1S, if the number of data flows is 1, and x and y are different from each other, the communication rate is low, the anti-interference capability is strong, and the communication reliability is high.

(2) XTyRzS the data stream type is not 1, x and y are not 1 at the same time, the speed is high, but the anti-interference capability is weak, and the communication reliability is low.

(3) 1T1R1S, the data stream type, the sending channel and the receiving channel are all 1, the speed is low, and the reliability is general.

Step S701, the first node receives the second capability indication information sent by the third node.

The second capability indication information is used for indicating that the third stage supports a SISO communication mode.

As shown in fig. 7, a hybrid networking topology including a MIMO communication scheme and a SISO communication scheme is illustrated, where between CCO and PCO1 and PCO2, between PCO1 and PC03 and PCO4, between PCO5 and STA3, and between PCO6 and STA4, a multi-wire connection, such as a three-phase four-wire connection, may be used, and between PCO2 and PCO5 and PCO6, and between PCO3 and STA1, a two-wire connection (1-phase line 1 zero line, essentially a set of single lines) is used, then the third node may be STA1, the first node may be PCO3, and since there is only a set of wires between PCO3 and STA1, only 1-receive 1 data stream (i.e., 1T1R 1S) may be supported, so STA1 may send a second capability indication message to PCO3 to indicate that itself supports only the SISO communication scheme.

Step S702, the first node communicates with the third node through a second communication mode.

Since the first node determines that the third node supports the SISO communication mode according to the second capability indication information, the second communication mode, that is, the mode of 1 sending and 1 receiving 1 data stream (that is, 1T1R 1S), is started to communicate with the third node, that is, the 1 data stream is sent through a channel formed by 1 phase line and 1 null line, and is not communicated with the third node through the MIMO mode.

Step S703, the first node receives the first capability indication information sent by the second node.

The first capability indication information is used for indicating that the second node supports the MIMO communication mode, so that the subsequent first node can select a corresponding communication mode from the MIMO communication modes to communicate with the second node, for example, select one communication mode from 1T2R1S, 1T3R1S, 2T3R2S, 2T2R1S, 2T2R2S, 3T3R1S, 3T3R2S, and 3T3R 3S.

Alternatively, the specific selection of which MIMO communication mode is to be performed may be based on a corresponding policy, for example, based on steps S704-S706.

Step S704, the first node obtains a first quality index corresponding to a first detection message and a second quality index corresponding to a second detection message in each of a plurality of communication modes.

In the embodiment of the application, the quality index comprises a data receiving and transmitting success rate and other indexes, wherein the other indexes comprise signal-to-noise ratio and/or channel attenuation, for example, the quality index comprises a receiving and transmitting success rate, a signal-to-noise ratio and channel attenuation, for example, the quality index comprises a receiving and transmitting success rate and a signal-to-noise ratio, and for example, the quality index can comprise other indexes related to detection messages or related to communication besides the indexes.

In the embodiment of the present application, the first detection message is a detection message sent by the first node to a second node, and the second detection message is a message sent by the second node to the first node, for example, the steps may include the following procedures:

The first node sends a first detection message to the second node, and correspondingly, the second node receives the first detection message, and during and after the process of receiving the first detection message, the indexes of data receiving and sending success rate, signal to noise ratio and channel attenuation can be obtained, and then the indexes are fed back to the first node and are called as a first quality index for convenience of description.

The first node receives the first quality index fed back by the second node.

The first node receives the second probe packet sent by the second node, and it can be understood that the second node also sends the second probe packet to the first node, so that during and after receiving the second probe packet, the indexes of data receiving and sending success rate, signal to noise ratio and channel attenuation can be obtained, which can be called as a second quality index for convenience of description.

Step 705, the first node determines the communication success rate of each communication mode according to the first quality index and the second quality index.

In the embodiment of the present application, the communication charging power of each of the multiple communication modes is evaluated one by one, for example, the multiple communication modes mentioned herein may be all communication modes under the MIMO communication mode or some of the communication modes, for example, the multiple communication modes herein may specifically include communication modes of 1T2R1S, 1T3R1S, 2T3R2S, 2T2R2S, 3T3R1S, 3T3R2S, and 3T3R3S, which are all communication modes, that is, when the present application performs extensive evaluation, not only the new communication modes generated by the change of the transmission channel T and the receiving channel R, but also the new communication modes generated by the change of the type (or number) of the data stream S are considered, which is an evaluation of a communication mode with finer granularity, and a more targeted and finer evaluation result can be obtained.

There are numerous ways of specific evaluation, and for ease of understanding, the following is illustrative:

In a first mode, each index included in the first quality index corresponds to a weight, for example, the first quality index includes several indexes of a data receiving and transmitting success rate 1, a signal to noise ratio 1 and a channel attenuation 1, wherein the data receiving and transmitting success rate 1 corresponds to a weight a1, the signal to noise ratio 1 corresponds to a weight b1 and the channel attenuation 1 corresponds to a weight c1, each index included in the second quality index corresponds to a weight, for example, the second quality index includes several indexes of a data receiving and transmitting success rate 2, a signal to noise ratio 2 and a channel attenuation 2, the data receiving and transmitting success rate 2 corresponds to a weight a2, the signal to noise ratio 2 corresponds to a weight b2 and the channel attenuation 2 corresponds to a weight c2, and then weighting each index in the first quality index and the second quality index according to the corresponding weight to obtain a communication success rate f1, for example, f1 is as follows:

f1 Data transmission/reception success rate 1×a1+signal-to-noise ratio 1×b1+channel attenuation 1×c1+transmission/reception success rate 2×a2+signal-to-noise ratio 2×b2+channel attenuation 2×c2.

In a second mode, the evaluation process includes the steps of:

And determining the comprehensive data receiving and transmitting success rate 3 under each communication mode according to the data receiving and transmitting success rate 1 corresponding to the first detection message under each communication mode and the data receiving and transmitting success rate 2 corresponding to the second detection message under each communication mode.

And determining a comprehensive signal-to-noise ratio 3 under each communication mode according to the signal-to-noise ratio 1 corresponding to the first detection message under each communication mode and the signal-to-noise ratio 2 corresponding to the second detection message under each communication mode.

And determining the comprehensive channel attenuation 3 under each communication mode according to the channel attenuation 1 corresponding to the first detection message under each communication mode and the channel attenuation 2 corresponding to the second detection message under each communication mode.

The communication success rate of each communication mode is determined according to the integrated data receiving and transmitting success rate 3, the integrated signal-to-noise ratio 3 and the integrated channel attenuation 3 under each communication mode, for example, the indexes respectively correspond to weights, the integrated data receiving and transmitting success rate 3 corresponds to a weight a3, the integrated signal-to-noise ratio 3 corresponds to a weight b3 and the integrated channel attenuation 3 corresponds to a weight c3, and in this case, the communication success rate f2 can also be calculated in a weighted manner, for example, f2 is as follows:

f1 Data transmit/receive success rate 3×a3+signal to noise ratio 3×b3+channel attenuation 3×c3.

It will be appreciated that if the above-mentioned various communication methods specifically include several communication methods of 1T2R1S, 1T3R1S, 2T3R2S, 2T2R1S, 2T2R2S, 3T3R1S, 3T3R2S, and 3T3R3S, then the respective communication success rates of the several communication methods will be determined.

It should be noted that, the weighting processing of several indexes is only an alternative implementation manner, and other modes of calculation can be adopted in practice, so long as the influence of each index on the result can be reflected, when the weighting mode is adopted for calculation, the weighted result can be an intermediate value, and the intermediate value can be processed for a second time in combination with other parameters or algorithms, so as to finally obtain the communication success rate.

Step S706, the first node communicates with the second node through the first communication mode.

After determining the above multiple communication modes, the first node selects one communication mode from the multiple communication modes to communicate with the second node, and in the embodiment of the present application, the selection may be performed according to a communication success rate and/or a communication rate index, for example, a preset condition is set in advance based on the communication success rate and/or the communication rate, and which of the above multiple communication modes satisfies the preset condition is selected as the first communication mode of the final communication. In the embodiment of the present application, the preset conditions may include constraints on other parameters in addition to constraints on the communication success rate and/or the communication rate, and in particular, what parameters are not limited here, for convenience of understanding, the following illustrates the preset conditions:

Case 1, wherein the preset condition includes that the communication rate is highest in the communication modes with the communication success rate larger than the first threshold N. For example, among the communication modes 1T2R1S, 1T3R1S, 2T3R2S, 2T2R1S, 2T2R2S, 3T3R1S, 3T3R2S, and 3T3R3S, the communication success rate is higher than the first threshold N by several modes 1T2R1S, 1T3R1S, 2T3R1S, and 2T3R2S, and among the communication modes 1T2R1S, 1T3R1S, 2T3R1S, and 2T3R2S, the communication rate is the highest by 2T3R2S, and then the selected first communication mode is 2T3R2S.

Case 2, wherein the preset condition includes that the communication success rate is highest in the communication modes with the communication rate larger than the second threshold M. For example, among the several communication modes of 1T2R1S, 1T3R1S, 2T3R2S, 2T2R1S, 2T2R2S, 3T3R1S, 3T3R2S, 3T3R3S, the communication rate is higher than the second threshold M by several modes of 2T2R2S, 3T3R1S, 3T3R2S, 3T3R3S, and 2T2R2S, 3T3R1S, 3T3R2S, and 3T3R3S, the communication success rate is the highest by 3T3R1S, and then the first communication mode selected is 3T3R1S.

It will be appreciated that if the preset conditions set are different, the first communication mode finally selected may be different.

In the embodiment of the application, the communication rate corresponding to the communication mode can be calculated according to the data receiving and transmitting success rate and the byte number which can be borne by the detection message in a certain communication mode, alternatively, the comprehensive data receiving and transmitting success rate can be calculated according to the data receiving and transmitting success rate corresponding to the first detection message sent by the first node and the data receiving and transmitting success rate corresponding to the second detection message received by the first node, and similarly, the comprehensive loadable byte number can be calculated according to the byte number which can be borne by the first detection message and the byte number which can be borne by the second detection message, and then the communication rate is calculated according to the comprehensive data receiving and transmitting success rate and the comprehensive loadable byte number. Of course, there are other ways, not illustrated herein.

In the embodiment of the present application, the real-time target communication success rate of the first communication mode may also be periodically estimated, where the estimation period may be set according to needs, for example, the communication success rate of the first communication mode selected in the foregoing may be estimated every 10 minutes, the obtained real-time communication success rate is referred to as the target success rate, and the estimation principle may refer to the principle described in the foregoing and will not be repeated herein. After obtaining the target communication success rate each time, analyzing the target communication success rate, if the target communication success rate is lower than a preset threshold, reselecting one communication mode from the plurality of communication modes to communicate with the second node, namely returning to execute the step of obtaining the quality index corresponding to the first detection message and the quality index corresponding to the second detection message under each communication mode in the plurality of communication modes, so that the steps S704-S706 can be executed again, and a proper communication mode is reselected to communicate with the second node.

In the scheme shown in fig. 7, in the design of the MIMO communication channels, more communication channels are realized by changing the number of transmission channels T, the number of reception channels R and the number of data streams S, so that more choices are provided, and in addition, by the constraint of the communication success rate and the communication rate, a communication channel with higher reliability and higher communication rate can be selected from more communication channels to perform communication. Furthermore, the embodiment of the application not only supports the selection of the MIMO communication mode, but also provides the support of the SISO communication mode, so that the hybrid networking can be supported, and a new means (namely the MIMO communication mode) is introduced to improve the communication throughput under the condition of being compatible with the existing standard.

The foregoing details of the method according to the embodiments of the present invention and the apparatus according to the embodiments of the present invention are provided below.

Referring to fig. 8, fig. 8 is a schematic structural diagram of a communication mode selecting apparatus provided in an embodiment of the present invention, where the apparatus may be a first node or a device in the first node, and the apparatus 80 may include an obtaining unit 801, a determining unit 802, and a communication unit 803, where detailed descriptions of the respective units are as follows.

An obtaining unit 801, configured to obtain a first quality index corresponding to a first detection packet and a second quality index corresponding to a second detection packet in each of multiple communication modes, where the quality indexes include a data transceiving success rate and other indexes, the other indexes include a signal-to-noise ratio and/or channel attenuation, the first detection packet is a detection packet sent by the first node to the second node, and the second detection packet is a packet sent by the second node to the first node;

a determining unit 802, configured to determine a communication success rate of each communication mode according to the first quality index and the second quality index;

And a communication unit 803 configured to communicate with the second node through a first communication method, where the communication success rate and the communication rate satisfy a communication method of a preset condition.

In one possible implementation of the present invention,

In yet another possible implementation:

The determining unit 802 is further configured to periodically evaluate a real-time target communication success rate of the first communication mode;

If the target communication success rate is lower than the preset threshold, the acquiring unit 801 is triggered to execute the operation of acquiring the quality index corresponding to the first detection message and the quality index corresponding to the second detection message in each of the multiple communication modes.

In yet another possible implementation, the x transmit channels and the y receive channels each belong to a channel consisting of a three-phase four-wire power line, and the z data streams are for transmission on the x transmit channels and the y receive channels.

In yet another possible implementation manner, the other indexes include a signal-to-noise ratio and a channel attenuation, the determining unit is specifically configured to:

In yet another possible implementation, the method comprises the steps of obtaining a first quality index corresponding to a first detection message and a second quality index corresponding to a second detection message in each of a plurality of communication modes, the acquisition unit is specifically configured to:

Sending a first detection message to the second node;

receiving a second detection message sent by the second node;

In yet another possible implementation:

the communication unit 803 is further configured to receive, before the obtaining unit obtains a first quality indicator corresponding to a first detection message and a second quality indicator corresponding to a second detection message in each of multiple communication modes, first capability indication information sent by a second node, where the first capability indication information is used to indicate that the second node supports a MIMO communication mode.

In yet another possible implementation:

the communication unit 803 is further configured to receive second capability indication information sent by a third stage, where the second capability indication information is used to indicate that the third stage supports a SISO communication manner;

the communication unit 803 is further configured to communicate with the third node through a second communication manner, where the second communication manner performs data transmission through 1 transmission channel, performs data reception through 1 reception channel, and is used for transmitting 1 data stream.

It should be noted that the implementation of each unit may also correspond to the corresponding description of the method embodiment shown in fig. 7.

Referring to fig. 9, fig. 9 is a communication mode selecting apparatus 90 according to an embodiment of the present invention, where the apparatus may be a first node or a device in the first node, and the apparatus 90 includes a processor 901, a memory 902, and a communication interface 903, where the processor 901, the memory 902, and the communication interface 903 are connected to each other by a bus.

The memory 902 includes, but is not limited to, random access memory (random access memory, RAM), read-only memory (ROM), erasable programmable read-only memory (erasable programmable read only memory, EPROM), or portable read-only memory (compact disc read-only memory, CD-ROM), the memory 902 for associated computer programs and data. The communication interface 903 is used to receive and transmit data.

The processor 901 may be one or more central processing units (central processing unit, CPU), and in the case where the processor 901 is a CPU, the CPU may be a single-core CPU or a multi-core CPU.

The processor 901 in the apparatus 90 is configured to read the computer program code stored in the memory 902, and perform the following operations:

The communication interface 903 is used for communicating with the second node through a first communication mode, wherein the communication success rate and the communication rate meet the communication mode of preset conditions.

In one possible implementation of the present invention,

In yet another possible implementation, the processor is further configured to:

In yet another possible implementation manner, the other indexes include signal-to-noise ratio and channel attenuation, the determining the communication success rate aspect of each communication mode according to the first quality index and the second quality index, the processor 901 is specifically configured to:

In another possible implementation manner, in the obtaining a first quality index corresponding to a first detection message and a second quality index corresponding to a second detection message in each of multiple communication manners, the processor 901 is specifically configured to:

sending a first detection message to the second node through a communication interface 903;

A first quality index generated when the second node receives the first detection message and feeds back the first quality index through a communication interface 903;

receiving a second detection message sent by the second node through a communication interface 903;

In another possible implementation manner, before the obtaining the first quality indicator corresponding to the first detection message and the second quality indicator corresponding to the second detection message in each of the multiple communication manners, the processor 901 is further configured to:

And receiving, by the communication interface 903, first capability indication information sent by a second node, where the first capability indication information is used to indicate that the second node supports a MIMO communication mode.

In yet another possible implementation, the processor 901 is further configured to:

Receiving second capability indication information sent by a third stage through a communication interface 903, where the second capability indication information is used to indicate that the third stage supports a SISO communication mode;

the communication interface 903 is used to communicate with the third node through a second communication mode, where the second communication mode performs data transmission through 1 transmission channel, performs data reception through 1 reception channel, and is used to transmit 1 data stream.

It should be noted that the implementation of the respective operations may also correspond to the corresponding description of the method embodiment shown with reference to fig. 7.

The embodiment of the invention also provides a chip system, which comprises at least one processor, a memory and an interface circuit, wherein the memory, the interface circuit and the at least one processor are interconnected through a circuit, a computer program is stored in the at least one memory, and when the computer program is executed by the processor, all or part of the method flow shown in fig. 7 is realized.

Embodiments of the present invention also provide a computer readable storage medium having a computer program stored therein that, when executed on a processor, implements all or part of the method flow shown in fig. 7.

Embodiments of the present invention also provide a computer program product for implementing all or part of the method flow shown in fig. 7 when the computer program product is run on a processor.

Those of ordinary skill in the art will appreciate that implementing all or part of the above-described embodiment methods may be accomplished by a computer program in hardware associated with the computer program, which may be stored on a computer readable storage medium, which when executed may comprise the above-described embodiment methods. The storage medium includes a ROM or a random access memory RAM, a magnetic disk or an optical disk, and the like, which can store computer program codes.

Claims

1. A communication mode selection method, characterized in that it is applied to a first node, and the method comprises:

Obtain a first quality indicator corresponding to a first detection message and a second quality indicator corresponding to a second detection message in each communication mode in multiple communication modes, wherein the quality indicators include a data transmission and reception success rate and other indicators, wherein the other indicators include a signal-to-noise ratio and/or a channel attenuation, wherein the first detection message is a detection message sent by the first node to the second node, and the second detection message is a message sent by the second node to the first node; the communication mode sends data through x sending channels, receives data through y receiving channels, and is used to transmit z types of data streams, and at least one of x, y and z is different between any two communication modes in the multiple communication modes;

Determine a communication success rate of each communication mode according to the first quality indicator and the second quality indicator;

Communicate with the second node via a first communication mode, wherein a communication success rate and a communication rate meet preset conditions of the communication mode.

2. The method according to claim 1, characterized in that

The preset condition includes that the communication rate is the highest among the communication modes in which the communication success rate is greater than the first threshold N; or,

The preset condition includes that the communication mode in which the communication rate is greater than the second threshold M has the highest communication success rate.

3. The method according to claim 1 or 2, further comprising:

If the target communication success rate is lower than a preset threshold, the method returns to the step of obtaining the quality indicator corresponding to the first detection message and the quality indicator corresponding to the second detection message in each communication mode among the multiple communication modes.

4. The method according to any one of claims 1-3 is characterized in that the x sending channels and the y receiving channels all belong to channels composed of three-phase four-wire power lines, and the z types of data streams are used for transmission on the x sending channels and the y receiving channels.

5. The method according to any one of claims 1 to 4, characterized in that the other indicators include signal-to-noise ratio and channel attenuation; and determining the communication success rate of each communication mode according to the first quality indicator and the second quality indicator comprises:

Determine a comprehensive data reception and transmission success rate under each communication mode according to the data reception and transmission success rate corresponding to the first detection message under each communication mode and the data reception and transmission success rate corresponding to the second detection message under each communication mode;

Determine a comprehensive signal-to-noise ratio under each communication mode according to the signal-to-noise ratio corresponding to the first detection message under each communication mode and the signal-to-noise ratio corresponding to the second detection message under each communication mode;

Determine the comprehensive channel attenuation under each communication mode according to the channel attenuation corresponding to the first detection message under each communication mode and the channel attenuation corresponding to the second detection message under each communication mode;

The communication success rate of each communication mode is determined according to the comprehensive data transmission and reception success rate, the comprehensive signal-to-noise ratio and the comprehensive channel attenuation under each communication mode.

6. The method according to any one of claims 1 to 5, characterized in that the obtaining of a first quality indicator corresponding to a first detection message and a second quality indicator corresponding to a second detection message in each communication mode in multiple communication modes comprises:

Sending a first detection message to the second node;

receiving a first quality indicator generated when receiving the first detection message and fed back by the second node;

Receiving a second detection message sent by the second node;

A second quality indicator is generated according to the reception status of the second message.

7. The method according to any one of claims 1 to 6, characterized in that before obtaining the first quality indicator corresponding to the first detection message and the second quality indicator corresponding to the second detection message in each communication mode in multiple communication modes, it also includes:

Receive first capability indication information sent by a second node, wherein the first capability indication information is used to indicate that the second node supports a MIMO communication mode.

8. The method according to any one of claims 1 to 7, further comprising:

receiving second capability indication information sent in the third stage, wherein the second capability indication information is used to indicate that the third stage supports the SISO communication mode;

Communicate with the third node via a second communication mode, wherein the second communication mode sends data via one sending channel, receives data via one receiving channel, and is used to transmit one data stream.

9. A communication mode selection device, characterized in that it is applied to a first node, and the device comprises:

An acquisition unit, used to acquire a first quality indicator corresponding to a first detection message and a second quality indicator corresponding to a second detection message in each communication mode in multiple communication modes, the quality indicators including a data transmission and reception success rate and other indicators, the other indicators including a signal-to-noise ratio and/or a channel attenuation, the first detection message is a detection message sent by the first node to the second node, and the second detection message is a message sent by the second node to the first node; the communication mode sends data through x sending channels, receives data through y receiving channels, and is used to transmit z types of data streams, and at least one of x, y and z is different between any two communication modes in the multiple communication modes;

a determining unit, configured to determine a communication success rate of each communication mode according to the first quality indicator and the second quality indicator;

A communication unit is used to communicate with a second node through a first communication mode, wherein a communication success rate and a communication rate meet preset conditions of the communication mode.

10. The device according to claim 9, characterized in that

11. The device according to claim 9 or 10, characterized in that:

The determining unit is further used to periodically evaluate the real-time target communication success rate of the first communication mode;

If the target communication success rate is lower than a preset threshold, the acquisition unit is triggered to execute the operation of acquiring the quality indicator corresponding to the first detection message and the quality indicator corresponding to the second detection message in each communication mode of the multiple communication modes.

12. The device according to any one of claims 9 to 11, characterized in that the x transmitting channels and the y receiving channels all belong to channels composed of three-phase four-wire power lines, and the z types of data streams are used for transmission on the x transmitting channels and the y receiving channels.

13. The device according to any one of claims 9 to 12, characterized in that the other indicators include signal-to-noise ratio and channel attenuation; in determining the communication success rate of each communication mode according to the first quality indicator and the second quality indicator, the determining unit is specifically used to:

14. The device according to any one of claims 9 to 13, characterized in that, in terms of obtaining a first quality indicator corresponding to a first detection message and a second quality indicator corresponding to a second detection message in each communication mode in multiple communication modes, the obtaining unit is specifically configured to:

Sending a first detection message to the second node;

Receiving a second detection message sent by the second node;

15. The device according to any one of claims 9 to 14, characterized in that:

The communication unit is further used to receive first capability indication information sent by the second node before the acquisition unit acquires the first quality indicator corresponding to the first detection message and the second quality indicator corresponding to the second detection message in each communication mode of the multiple communication modes, wherein the first capability indication information is used to indicate that the second node supports the MIMO communication mode.

16. The device according to any one of claims 9 to 15, characterized in that:

The communication unit is further used to receive second capability indication information sent in the third stage, wherein the second capability indication information is used to indicate that the third stage supports the SISO communication mode;

The communication unit is further used to communicate with the third node through a second communication mode, wherein the second communication mode sends data through one sending channel, receives data through one receiving channel, and is used to transmit one data stream.

17. A communication mode selection device, characterized in that it is applied to a first node, and the device includes a processor, a memory and a communication interface, wherein the memory is used to store a computer program, the communication interface is used to perform data sending and receiving operations under the call of the processor, and the processor is used to call the computer program to implement the method described in any one of claims 1-8.

18. A first node, characterized in that the first node comprises the communication mode selection device according to any one of claims 9 to 17.

19. A computer-readable storage medium, characterized in that the computer-readable storage medium is used to store a computer program, and when the computer program is called by a processor, it implements the method according to any one of claims 1 to 8.