CN113573347B - Data collaborative processing methods in the industrial Internet of Things - Google Patents

Abstract

The invention discloses a data cooperation processing method in an industrial Internet of things, which comprises the following steps: the second communication node feeds back first channel state information, positioning reference signal arrival time information and arrival angle information to the first communication node, the first communication node activates X third communication nodes and Y fifth communication nodes which are nearest to the possible positions of the second communication node, the second communication node transmits uplink sounding reference signals, the Y fifth communication nodes receive the uplink sounding reference signals, Z fifth communication nodes are selected from the Y fifth communication nodes, the first communication node modulates N data bits, the first communication node and the X third communication nodes send a plurality of modulation symbols to the second communication node and the Y fifth communication nodes, and the second communication node and the Z fifth communication nodes check the N data bits obtained after processing to generate feedback information to the first communication node. The invention can improve the reliability and efficiency of data channel transmission.

Description

Data collaborative processing methods in the industrial Internet of Things

Technical field

The present invention relates to the field of wireless communication technology, and in particular to a data collaborative processing method in the industrial Internet of Things.

Background technique

5G will meet people's diverse business needs in various areas such as living, working, leisure and transportation, even in dense residential areas, offices, stadiums, open-air parties, subways, expressways, high-speed rail and wide-area coverage with ultra-high traffic density , ultra-high connection density, and ultra-high mobility scenarios can also provide users with the ultimate business experience such as ultra-high-definition video, virtual video reality, augmented reality, cloud desktop, and online games. At the same time, 5G will also penetrate into the Internet of Things and various industry fields, and be deeply integrated with industrial facilities, medical instruments, transportation, etc., effectively meeting the diverse business needs of vertical industries such as industry, medical care, and transportation, and realizing true " Everything is connected”.

5G application scenarios can be divided into two major categories, namely Mobile Broadband (MBB) and Internet of Things (IoT). Among them, the main technical requirement for mobile broadband access is high capacity and high data rate. To meet the growing demand for data services. The Internet of Things is mainly driven by the demand for machine communication (MTC, Machine Type Communication), which can be further divided into two types, including low-rate Massive Machine Communication (MMC) and low-latency and reliable machine communication. Among them, for low-rate massive machine communications and low-rate access to massive nodes, the transmitted data packets are usually small and the intervals are relatively long. The cost and power consumption of such nodes are usually very low; for low-latency Highly reliable machine communication is mainly aimed at machine communication with high real-time and reliability requirements, such as real-time alarms, real-time monitoring, etc.

In the fifth-generation mobile communication system, a problem that needs to be solved is the efficient and reliable transmission of data in industrial IoT scenarios. Commonly used solutions will seriously reduce the performance of the network when the channel estimation accuracy is relatively low.

Based on the above analysis, the present invention proposes a data collaborative processing method in the industrial Internet of Things.

Contents of the invention

The main purpose of the present invention is to propose a data collaborative processing method in the Industrial Internet of Things, aiming to improve the reliability and efficiency of data transmission in the Industrial Internet of Things.

To achieve the above objectives, the present invention provides a data collaborative processing method in the Industrial Internet of Things, which method includes the following steps:

The second communication node receives the downlink channel state information reference signal and the positioning reference signal sent by the first communication node, generates the first channel state information based on the downlink channel state information reference signal, and generates the positioning reference signal based on the positioning reference signal. Arrival time information and arrival angle information, feedback the first channel state information, the positioning reference signal arrival time information and arrival angle information to the first communication node, wherein the first channel state information at least includes low reliability One of the following: reliable channel state information, medium-reliability channel state information, and high-reliability channel state information;

The first communication node receives the first channel state information, the positioning reference signal arrival time information and the arrival angle information;

The first communication node sends uplink sounding reference signal configuration information, wherein the uplink sounding reference signal configuration information at least includes transmit power configuration information for the uplink sounding reference signal sent by the second communication node. When the first channel When the status information is low reliability channel status information, the transmission power configuration information requires the second communication node to require maximum transmission power to send the uplink sounding reference signal; when the first channel status information is medium reliability channel status When the information is received, the transmission power configuration information requires the second communication node to use 0.75 times the maximum transmission power to transmit the uplink sounding reference signal; when the first channel status information is high reliability channel status information, the The transmission power configuration information requires the second communication node to use 0.5 times the maximum transmission power to transmit the uplink sounding reference signal;

The first communication node estimates the possible location of the second communication node based on the positioning reference signal arrival time and arrival angle information, and the first communication node activates X third communication nodes closest to the possible location. and Y fifth communication nodes, wherein the value of X is determined according to the first channel state information. When the first channel state information is low-reliability channel state information, the value of When the first channel state information is medium-reliability channel state information, the value of X is 2. When the first channel state information is high-reliability channel state information, the value of The first channel state information is determined. When the first channel state information is low reliability channel state information, the value of Y is 3. When the first channel state information is medium reliability channel state information or high reliability state When receiving information, the value of Y is 0;

After receiving the uplink sounding reference signal configuration information, the second communication node sends the uplink sounding reference signal according to the uplink sounding reference signal configuration information;

The first communication node receives the uplink sounding reference signal and determines second channel state information according to the reception quality of the uplink sounding reference signal, wherein the second channel state information at least includes low reliability channel state information, medium One of reliability channel status information and high reliability channel status information;

The Y fifth communication nodes receive the uplink sounding reference signal, and Z fifth communication nodes are selected from the Y fifth communication nodes that receive the uplink sounding reference signal and have a received signal-to-noise ratio greater than 20 dB, wherein , Z is an integer greater than or equal to 0 and less than or equal to Y;

The first communication node modulates N data bits, where the modulation method is determined according to the following criteria:

a. If the first channel status information and the second channel status information are both low-reliability channel status information, the first N/3 data bits use BPSK modulation, and the middle N/3 data bits use QPSK modulation. method, the last N/3 data bits use 16QAM modulation method;

b. If the first channel state information is low-reliability channel state information, and the second channel state information is medium-reliability channel state information, then the first N/4 data bits use BPSK modulation, and the middle N/4 The first N/2 data bits use the QPSK modulation method, and the last N/2 data bits use the 16QAM modulation method;

c. If the first channel state information is low-reliability channel state information, and the second channel state information is high-reliability channel state information, then the first N/4 data bits use BPSK modulation, and the last 3N/4 Each data bit uses 16QAM modulation method;

d. If the first channel state information is medium-reliability channel state information and the second channel state information is low-reliability channel state information, then the first N/3 data bits use the QPSK modulation method, and the middle N/3 The first N/3 data bits use 16QAM modulation, and the last N/3 data bits use 64QAM modulation;

e. If both the first channel state information and the second channel state information are medium reliability channel state information, the first N/4 data bits use QPSK modulation, and the middle N/4 data bits use 16QAM modulation. method, the last N/2 data bits use 64QAM modulation method;

f. If the first channel state information is medium-reliability channel state information, and the second channel state information is high-reliability channel state information, then the first N/4 data bits use 16QAM modulation, and the last N3/4 Each data bit uses 64QAM modulation;

g. If the first channel state information is high-reliability channel state information, the N data bits use the 64QAM modulation method, where N is an integer that is a positive integer multiple of 72, and the N data bits include Useful bits and cyclic redundancy check bits;

The first communication node shares the plurality of modulation symbols obtained after modulation with the X third communication nodes;

The first communication node and the X third communication nodes use the same time-frequency resource to send the plurality of modulation symbols to the second communication node and the Y fifth communication nodes;

The second communication node receives the plurality of modulation symbols, and the Z fifth communication nodes receive the plurality of modulation symbols. If any one of the second communication node or the Z fifth communication nodes communicates If the N data bits obtained after node processing pass the verification, the second communication node generates feedback information including reception success information to the first communication node, the second communication node or the Z fifth communication nodes. If the N data bits obtained after processing by all communication nodes in the node point fail to pass the verification, the second communication node generates feedback information containing reception failure information to the first communication node;

The first communication node receives the feedback information. If the feedback information contains reception failure information, the first communication node determines based on the positioning reference signal arrival time and arrival angle information fed back by the second communication point. The fourth communication node that is closest to the second communication node except the X third communication nodes, the first communication node shares the last N/2 data bits in the N data ratios with The fourth communication node, the first communication node and the X third communication nodes modulate the first N/2 or N data bits and resend them to the second communication node and the Z and a fifth communication node. The fourth communication node modulates the last N/2 data bits and resends them to the second communication node and the Z fifth communication nodes.

A further technical solution of the present invention is that before the second communication node feeds back the first channel state information, the second communication node and the first communication node negotiate the generation of the first channel state information through signaling. In this way, when the signal-to-interference-to-noise ratio of the downlink channel state information reference signal received by the second communication node is less than or equal to 8dB, the first channel state information includes low reliability channel state information; when the second communication node receives When the signal-to-interference-to-noise ratio of the received downlink channel state information reference signal is greater than 8dB and less than or equal to 15dB, the first channel state information includes medium reliability channel state information; when the second communication node receives the When the signal-to-interference-to-noise ratio of the downlink channel state information reference signal is greater than 15 dB, the first channel state information includes high-reliability channel state information.

A further technical solution of the present invention is that when the first channel state information is low reliability channel state information, the transmit power configuration information requires the second communication node to repeat the uplink detection eight times in the time domain. Reference signal; when the first channel state information is medium reliability channel state information, the transmit power configuration information requires the second communication node to repeatedly send the uplink sounding reference signal four times in the time domain; when the When the first channel state information is high-reliability channel state information, the transmit power configuration information requires the second communication node to repeatedly send the uplink sounding reference signal twice in the time domain.

A further technical solution of the present invention is that when the signal-to-interference-to-noise ratio of the uplink sounding reference signal received by the first communication node is less than or equal to 8dB, the second channel state information includes low reliability channel state information; When the signal-to-interference-to-noise ratio of the uplink sounding reference signal received by the first communication node is greater than 8dB and less than or equal to 15dB, the second channel state information includes medium reliability channel state information. When the third When the signal-to-interference-to-noise ratio of the uplink sounding reference signal received by a communication node is greater than 15 dB, the second channel state information includes high-reliability channel state information.

A further technical solution of the present invention is that when the feedback information received by the first communication node includes reception failure information, and the first channel state information is low-reliability channel state information, then the first communication node The node performs BPSK modulation on the N data bits, the first communication node shares the plurality of modulation symbols with the X third communication nodes, and the first communication node and the third communication node use The same time-frequency resource sends the plurality of modulation symbols to the second communication node and the Z fifth communication nodes; the fourth communication node performs BPSK modulation on the last N/2 data bits, And the plurality of BPSK symbols obtained after modulation are sent to the second communication node and the Z fifth communication nodes.

A further technical solution of the present invention is that when the feedback information received by the first communication node includes reception failure information, and the first channel state information is medium reliability channel state information, then the first communication node The node performs BPSK modulation on the first N/2 data bits of the N data bits, and performs QPSK modulation on the last N/2 bits. The first communication node shares the multiple modulation symbols with the Xth Three communication points, the first communication node and the third communication node use the same time-frequency resource to send the plurality of modulation symbols to the second communication node and the Z fifth communication nodes; The fourth communication node performs 16QAM modulation on the last N/2 data bits, and sends the modulated plurality of 16QAM symbols to the second communication node and the Z fifth communication nodes.

A further technical solution of the present invention is that when the feedback information received by the first communication node includes reception failure information, and the first channel state information is high-reliability channel state information, then the first communication node The node performs QPSK modulation on the first N/2 bits of the N data bits, and performs 16QAM modulation on the last N/2 data bits. The first communication node shares the multiple modulation symbols with the Xth Three communication nodes, the first communication node and the third communication node use the same time-frequency resource to send the plurality of modulation symbols to the second communication node and the Z fifth communication nodes; The fourth communication node performs 64QAM modulation on the last N/2 data bits, and sends the modulated plurality of 64QAM symbols to the second communication node and the Z fifth communication nodes.

A further technical solution of the present invention is that the first communication node only transmits the downlink channel state information reference signal in the time domain where the downlink channel state information reference signal is located.

A further technical solution of the present invention is that when the first channel state information is high reliability channel state information, the second communication node only transmits the uplink sounding reference signal in the time domain where the uplink sounding reference signal is located. Signal.

A further technical solution of the present invention is that when the first channel state information is high reliability channel state information and the first communication node sends the N data bits, the first communication node uses the demodulation The number of resources occupied by the reference signal is X subcarriers. When the first channel state information is medium reliability channel state information and the first communication node sends the N data bits, the first communication node uses The number of resources occupied by the demodulation reference signal is Y subcarriers. When the first channel state information is low reliability channel state information and the first communication node sends the N data bits, the first The number of resources occupied by the demodulation reference signal used by the communication node is Z subcarriers, where X, Y, and Z are positive integers, X is greater than or equal to twice Y, and Y is greater than or equal to 2 times Z.

The beneficial effect of the data collaborative processing method in the industrial Internet of Things of the present invention is that through the above technical solution, the present invention can overcome the existing data transmission reliability problem in the industrial Internet of Things and improve the reliability and efficiency of data channel transmission.

Description of the drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are only These are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on the structures shown in these drawings without exerting creative efforts.

Figure 1 is a schematic flow chart of the first embodiment of the data collaboration processing method in the industrial Internet of Things of the present invention.

The realization of the purpose, functional features and advantages of the present invention will be further described with reference to the embodiments and the accompanying drawings.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of the present invention.

Referring to Figure 1, the present invention proposes a data collaboration processing method in the Industrial Internet of Things. The first embodiment of the data collaboration processing method in the Industrial Internet of Things includes the following steps:

Step S10: The second communication node receives the downlink channel state information reference signal and the positioning reference signal sent by the first communication node, generates the first channel state information based on the downlink channel state information reference signal, and generates the first channel state information based on the positioning reference signal. The positioning reference signal arrival time information and the arrival angle information are fed back to the first communication node the first channel state information, the positioning reference signal arrival time information and the arrival angle information, wherein the first channel state information is at least It includes one of low-reliability channel state information, medium-reliability channel state information, and high-reliability channel state information.

In this embodiment, the first communication node may be, for example, a base station, and the second communication node may be, for example, a terminal. The present invention will be described in detail below, taking the base station and the terminal as examples.

In this embodiment, the terminal receives the downlink channel state information reference signal and the positioning reference signal sent by the base station, generates the first channel state information based on the downlink channel state information reference signal, and generates the positioning reference signal arrival based on the positioning reference signal. time information and angle of arrival information, and feed back the first channel state information, the positioning reference signal arrival time information and the angle of arrival information to the base station, where the first channel state information at least includes low reliability channel state information, medium One of reliability channel state information and high reliability channel state information.

The advantage of using this method of dividing channel state information in this embodiment is to reduce the uplink feedback overhead and improve the uplink spectrum efficiency of the mobile communication system while fully considering the actual wireless channel environment. The advantage of this kind of feedback of positioning-related information is that the base station can determine the location of the terminal and activate the micro base station near the terminal during data retransmission, and cooperate with the base station to retransmit data to the terminal to improve the reliability of data transmission.

Step S20: The first communication node receives the first channel state information, the positioning reference signal arrival time information and the arrival angle information.

The base station receives the first channel state information, the positioning reference signal arrival time information and the arrival angle information.

Step S30: The first communication node sends uplink sounding reference signal configuration information, wherein the uplink sounding reference signal configuration information at least includes transmit power configuration information for the uplink sounding reference signal sent by the second communication node. When the When the first channel state information is low-reliability channel state information, the transmit power configuration information requires the second communication node to require the maximum transmit power to transmit the uplink sounding reference signal; when the first channel state information is medium-reliable When the first channel status information is high-reliability channel status information, the transmission power configuration information requires the second communication node to use 0.75 times the maximum transmission power to send the uplink sounding reference signal; when the first channel status information is high-reliability channel status information , the transmission power configuration information requires the second communication node to use 0.5 times the maximum transmission power to transmit the uplink sounding reference signal.

In this embodiment, the base station sends uplink sounding reference signal configuration information, wherein the uplink sounding reference signal configuration information at least includes transmit power configuration information for the terminal to send the uplink sounding reference signal. When the first channel state information is low reliability When the first channel state information is medium reliability channel state information, the transmit power configuration information requires that the terminal needs maximum transmit power to transmit the uplink sounding reference signal; when the first channel state information is medium reliability channel state information, the transmit power configuration information requires The terminal uses 0.75 times the maximum transmission power to send the uplink sounding reference signal; when the first channel state information is high-reliability channel state information, the transmission power configuration information requires the terminal to use 0.5 times the maximum transmission power to send all the uplink sounding reference signals. The above uplink detection reference signal.

The reason why this embodiment adopts the above technical solution is that there is reciprocity in the uplink and downlink channels of the TDD mobile communication system. The base station can determine the transmission power of the uplink signal based on the downlink feedback to avoid uplink signal reception quality that cannot meet the communication needs due to uplink coverage problems. .

Step S40: The first communication node estimates the possible location of the second communication node based on the positioning reference signal arrival time and arrival angle information, and the first communication node activates the Xth closest communication node to the possible location. Three communication nodes and Y fifth communication nodes, wherein the value of X is determined according to the first channel state information. When the first channel state information is low-reliability channel state information, the value of When the first channel state information is medium-reliability channel state information, the value of X is 2. When the first channel state information is high-reliability channel state information, the value of X is 1; the value of Y It is determined according to the first channel state information that when the first channel state information is low reliability channel state information, the value of Y is 3, and when the first channel state information is medium reliability channel state information or high reliability channel state information When providing reliability status information, the value of Y is 0.

In this embodiment, the third communication node may be a micro base station, for example, and the fifth communication node may be a special terminal, for example. In this embodiment, the base station estimates the possible location of the terminal based on the positioning reference signal arrival time and arrival angle information, and the base station activates X micro base stations and Y special terminals that are closest to the possible location, where the value of It is determined according to the first channel state information that when the first channel state information is low reliability channel state information, the value of X is 3, and when the first channel state information is medium reliability channel state information, The value of X is 2. When the first channel state information is high-reliability channel state information, the value of When the information is low-reliability channel state information, the value of Y is 3. When the first channel state information is medium-reliability channel state information or high-reliability state information, the value of Y is 0.

The beneficial effect of using the above technical solution in this embodiment is that the base station determines the number of micro base stations that need to cooperate with it for downlink data transmission based on the downlink channel state information between it and the terminal, and the number of special terminals that need to cooperate with the terminal for reception. number, thereby improving the probability of the terminal successfully receiving downlink data.

Step S50: After receiving the uplink sounding reference signal configuration information, the second communication node sends the uplink sounding reference signal according to the uplink sounding reference signal configuration information.

After receiving the uplink sounding reference signal configuration information, the terminal sends the uplink sounding reference signal according to the uplink sounding reference signal configuration information.

Step S60: The first communication node receives the uplink sounding reference signal and determines second channel state information according to the reception quality of the uplink sounding reference signal, wherein the second channel state information at least includes a low reliability channel state. Information, medium-reliability channel state information, and high-reliability channel state information.

In this embodiment, the base station receives the uplink sounding reference signal and determines second channel state information based on the reception quality of the uplink sounding reference signal, where the second channel state information at least includes low reliability channel state information, medium One of reliability channel state information and high reliability channel state information.

The reason why this embodiment adopts the above technical solution is that although there is channel reciprocity in the uplink and downlink of the TDD mobile communication system, there is no reciprocity in the uplink and downlink interference, which leads to the problem of inconsistency in the uplink and downlink channel state information.

Step S70, the Y fifth communication nodes receive the uplink detection reference signal, and select Z fifth communication nodes from the Y fifth communication nodes that receive the uplink detection reference signal and have a received signal-to-noise ratio greater than 20 dB. Node, where Z is an integer greater than or equal to 0 and less than or equal to Y.

In this embodiment, the Y special terminals receive the uplink detection reference signal, and Z special terminals are selected from the Y special terminals that receive the uplink detection reference signal and have a received signal-to-noise ratio greater than 20dB, where, Z is an integer greater than or equal to 0 and less than or equal to Y.

Step S80: The first communication node modulates N data bits.

In this embodiment, the base station modulates N data bits, where the modulation method is determined according to the following criteria:

a. If the first channel status information and the second channel status information are both low-reliability channel status information, the first N/3 data bits use BPSK modulation, and the middle N/3 data bits use QPSK modulation. method, the last N/3 data bits use 16QAM modulation method.

This embodiment uses the above technical solution because the quality of the wireless channel between the base station and the terminal is relatively poor at this time, so it is necessary to use more low-order modulation methods to ensure transmission reliability.

b. If the first channel state information is low-reliability channel state information, and the second channel state information is medium-reliability channel state information, then the first N/4 data bits use BPSK modulation, and the middle N/4 The first N/2 data bits use the QPSK modulation method, and the last N/2 data bits use the 16QAM modulation method.

This embodiment adopts the above technical solution because at this time, there is relatively strong interference in the downlink channel between the base station and the terminal, resulting in a relatively high downlink SINR. However, the downlink SNR is better based on the analysis of the second channel status information, so the low-level SNR can be reduced. The use of modulation methods.

c. If the first channel state information is low-reliability channel state information, and the second channel state information is high-reliability channel state information, then the first N/4 data bits use BPSK modulation, and the last 3N/4 Each data bit uses 16QAM modulation.

This embodiment adopts the above technical solution because there is relatively strong interference in the downlink channel between the base station and the terminal at this time, resulting in a relatively high downlink SINR. However, the downlink SNR is very good based on the analysis of the second channel status information, so the low level can be further reduced. The use of order modulation methods.

d. If the first channel state information is medium-reliability channel state information and the second channel state information is low-reliability channel state information, then the first N/3 data bits use the QPSK modulation method, and the middle N/3 The first N/3 data bits use 16QAM modulation, and the last N/3 data bits use 64QAM modulation.

This embodiment adopts the above technical solution because the downlink channel between the base station and the terminal is relatively good at this time. Therefore, the BPSK low-order modulation method does not need to be applied.

e. If the first channel state information and the second channel state information are medium reliability channel state information, the first N/4 data bits use QPSK modulation, and the middle N/4 data bits use 16QAM. Modulation method, the last N/2 data bits use 64QAM modulation method.

This embodiment adopts the above technical solution because at this time, the downlink channel between the base station and the terminal is relatively good, and the uplink channel is also relatively good, thus proving that the reliability of the information that the downlink channel is better is very high, and therefore, more users can The data bits use 64QAM modulation.

f. If the first channel state information is medium-reliability channel state information, and the second channel state information is high-reliability channel state information, then the first N/4 data bits use 16QAM modulation, and the last N3/4 Each data bit uses 64QAM modulation.

This embodiment adopts the above technical solution because at this time, the downlink channel between the base station and the terminal is better, and the uplink channel is better, thus proving that there is interference in the downlink channel, and the terminal side uses an optimized receiver algorithm to eliminate these interferences. Therefore, it can Let more data bits use 64QAM modulation.

g. If the first channel state information is high-reliability channel state information, the N data bits use the 64QAM modulation method, where N is an integer that is a positive integer multiple of 72, and the N data bits include Useful bits and cyclic redundancy check bits.

It should be noted that in this case, the downlink channel is very good. You can directly use the 64QAM modulation method to modulate N data bits without considering the uplink channel.

Step S90: The first communication node shares the plurality of modulation symbols obtained after modulation with the X third communication nodes.

The base station shares the multiple modulation symbols obtained after modulation with the X micro base stations.

Step S100: The first communication node and the X third communication nodes use the same time-frequency resource to send the plurality of modulation symbols to the second communication node and the Y fifth communication nodes.

The base station and the X micro base stations use the same time-frequency resources to send the multiple modulation symbols to the terminal and the Y special terminals.

Step S110: The second communication node receives the plurality of modulation symbols, and the Z fifth communication nodes receive the plurality of modulation symbols. If any of the second communication node or the Z fifth communication nodes If the N data bits obtained after processing by any communication node pass the verification, the second communication node generates feedback information containing reception success information to the first communication node, the second communication node or the Z If the N data bits processed by all communication nodes in the fifth communication node fail to pass the verification, the second communication node generates feedback information including reception failure information to the first communication node.

The terminal and Z special terminals receive multiple modulation symbols. If the N data bits obtained by the terminal and any one of the Z special terminals pass the verification, the terminal generates feedback information containing reception success information to the base station. If the terminal If all the N data bits obtained after processing with Z special terminals fail to pass the verification, the terminal generates feedback information containing reception failure information to the base station.

Step S120: The first communication node receives the feedback information. If the feedback information contains reception failure information, the first communication node uses the arrival time and arrival time of the positioning reference signal fed back by the second communication point. The angle information determines the fourth communication node that is closest to the second communication node except the X third communication nodes, and the first communication node converts the last N/2 data bits among the N data bits. Shared to the fourth communication node, the first communication node and the X third communication nodes modulate the first N/2 or N data bits and then resend them to the second communication node and all For the Z fifth communication nodes, the fourth communication node modulates the last N/2 data bits and then resends them to the second communication node and the Z fifth communication nodes.

The base station receives the feedback information. If the feedback information contains reception failure information, the base station determines the approximate location of the terminal based on the arrival time and angle of arrival information of the positioning reference signal fed back by the terminal, and then finds the micro base station that is closest to the terminal except for the X micro base stations mentioned above. The base station (called the fourth base station) shares the last N/2 data bits among the N data bits with the micro base station. The base station modulates the first N/2 data bits and resends them to the terminal and Z special terminals. The fourth base station modulates the last N/2 data bits and resends them to the terminal and Z special terminals. What needs to be explained here is that the modulation method used when retransmitting N data bits needs to be adjusted, and the order of the modulation method should be appropriately reduced to improve the reliability of data transmission.

It should be noted that, in this embodiment, the first communication node only transmits the downlink channel state information reference signal in the time domain where the downlink channel state information reference signal is located. The advantage of this is that the terminal can concentrate all downlink power to send downlink sounding reference signals, thereby improving the base station's estimation accuracy of the downlink channel.

When the first channel state information is high reliability channel state information, the second communication node only transmits the uplink sounding reference signal in the time domain where the uplink sounding reference signal is located. The advantage of this is that the terminal can concentrate all the uplink power to send the uplink sounding reference signal, thereby improving the base station's estimation accuracy of the uplink channel.

Through the above technical solution, this embodiment can overcome the problem of data transmission reliability in the existing industrial Internet of Things and improve the reliability and efficiency of data channel transmission.

Based on the first embodiment shown in Figure 1, a second embodiment of the data collaborative processing method in the industrial Internet of Things of the present invention is proposed. The difference between this embodiment and the first embodiment shown in Figure 1 is that the second communication Before the node feeds back the first channel state information, the second communication node and the first communication node negotiate the generation method of the first channel state information through signaling. When the second communication node receives the downlink When the signal-to-interference-to-noise ratio of the channel state information reference signal is less than or equal to 8dB, the first channel state information includes low-reliability channel state information; when the signal-to-interference noise ratio of the downlink channel state information reference signal received by the second communication node When the noise ratio is greater than 8dB and less than or equal to 15dB, the first channel state information includes medium reliability channel state information; when the signal-to-interference-to-noise ratio of the downlink channel state information reference signal received by the second communication node is greater than 15dB When, the first channel state information includes high reliability channel state information.

Taking the above terminal and base station as an example, in this embodiment, before the terminal feeds back the first channel state information, the terminal and the base station negotiate the generation method of the first channel state information through signaling. When the terminal receives the downlink When the signal-to-interference-to-noise ratio of the channel state information reference signal is less than or equal to 8dB, the first channel state information includes low-reliability channel state information; when the signal-to-interference-to-noise ratio of the downlink channel state information reference signal received by the terminal is greater than 8dB and less than or equal to 15dB, the first channel state information includes medium reliability channel state information; when the signal-to-interference-to-noise ratio of the downlink channel state information reference signal received by the terminal is greater than 15dB, the first channel state information The channel state information includes high reliability channel state information.

The beneficial effect of adopting the above technical solution in this embodiment is that the base station and the terminal can adjust the range of channel status information of different reliability according to the actual situation of the wireless channel, thereby better adapting to changes in the wireless channel environment.

Based on the first embodiment shown in Figure 1, a third embodiment of the data collaborative processing method in the industrial Internet of Things of the present invention is proposed. The difference between this embodiment and the first embodiment shown in Figure 1 is that when the first When the channel state information is low-reliability channel state information, the transmit power configuration information requires the second communication node to repeatedly send the uplink sounding reference signal eight times in the time domain; when the first channel state information is medium When the first channel state information is high reliability channel state information, the transmission power configuration information requires the second communication node to repeat the uplink sounding reference signal four times in the time domain; when the first channel state information is high reliability channel state information When , the transmission power configuration information requires the second communication node to repeatedly send the uplink sounding reference signal twice in the time domain.

Taking the above terminal and base station as an example, in this embodiment, when the first channel state information is low reliability channel state information, the transmit power configuration information requires the terminal to repeatedly send the uplink detection eight times in the time domain. Reference signal; when the first channel state information is medium reliability channel state information, the transmit power configuration information requires the terminal to repeatedly send the uplink sounding reference signal four times in the time domain; when the first channel state information When the information is high-reliability channel state information, the transmit power configuration information requires the terminal to repeatedly transmit the uplink sounding reference signal twice in the time domain.

This embodiment adopts the above technical solution and utilizes the uplink and downlink reciprocity of the channel to improve the transmission quality of the uplink detection reference signal as much as possible and ensure that the base station obtains a more accurate judgment on the downlink channel status information.

Based on the first embodiment shown in Figure 1, a fourth embodiment of the data collaborative processing method in the industrial Internet of Things of the present invention is proposed. The difference between this embodiment and the first embodiment shown in Figure 1 is that when the first When the signal-to-interference-to-noise ratio of the uplink sounding reference signal received by the communication node is less than or equal to 8dB, the second channel state information includes low reliability channel state information; when the uplink sounding signal received by the first communication node When the signal-to-interference-to-noise ratio of the sounding reference signal is greater than 8dB and less than or equal to 15dB, the second channel state information includes medium reliability channel state information. When the uplink sounding reference signal received by the first communication node When the signal-to-interference-to-noise ratio is greater than 15dB, the second channel state information includes high-reliability channel state information.

Taking the above terminal and base station as an example, in this embodiment, when the signal-to-interference-to-noise ratio of the uplink sounding reference signal received by the base station is less than or equal to 8dB, the second channel state information includes low-reliability channel state information; When the signal-to-interference-to-noise ratio of the uplink sounding reference signal received by the base station is greater than 8dB and less than or equal to 15dB, the second channel state information includes medium reliability channel state information. When the uplink sounding reference signal received by the base station When the signal-to-interference-to-noise ratio of the reference signal is greater than 15dB, the second channel state information includes high-reliability channel state information.

The beneficial effect of adopting the above technical solution in this embodiment is that the base station and the terminal can adjust the range of channel status information of different reliability according to the actual situation of the wireless channel, thereby better adapting to changes in the wireless channel environment.

Based on the first embodiment shown in Figure 1, a fifth embodiment of the data collaborative processing method in the industrial Internet of Things of the present invention is proposed. The difference between this embodiment and the first embodiment shown in Figure 1 is that when the first When the feedback information received by the communication node includes reception failure information, and the first channel state information is low-reliability channel state information, the first communication node performs BPSK modulation on the N data bits, so The first communication node shares the plurality of modulation symbols with the X third communication nodes, and the first communication node and the third communication node use the same time-frequency resource to transmit the plurality of modulation symbols. to the second communication node and the Z fifth communication nodes; the fourth communication node performs BPSK modulation on the last N/2) data bits, and sends a plurality of BPSK symbols obtained after modulation to the second communication node and the Z fifth communication nodes.

Taking the above terminal and base station as an example, in this embodiment, when the feedback information received by the base station includes reception failure information, and the first channel state information is low-reliability channel state information, the base station will BPSK modulation is performed on data bits, and the base station shares the multiple modulation symbols with the X micro base stations. The base station and the micro base station use the same time-frequency resources to send the multiple modulation symbols to the terminal and the Z special Terminal; the fourth communication node performs BPSK modulation on the last N/2 data bits, and sends multiple BPSK symbols obtained after modulation to the terminal and the Z special terminals.

The beneficial effect of using the above technical solution in this embodiment is to increase the probability of successful reception by the terminal by allowing all data bits to use BPSK modulation and transmitting some data bits through micro base stations that are relatively close to the terminal.

Based on the first embodiment shown in Figure 1, a sixth embodiment of the data collaborative processing method in the industrial Internet of Things of the present invention is proposed. The difference between this embodiment and the first embodiment shown in Figure 1 is that when the first When the feedback information received by the communication node includes reception failure information, and the first channel state information is medium reliability channel state information, then the first communication node converts the first N/2 of the N data bits data bits are subjected to BPSK modulation, and the last N/2 bits are subjected to QPSK modulation. The first communication node shares the plurality of modulation symbols with the The third communication node uses the same time-frequency resource to send the plurality of modulation symbols to the second communication node and the Z fifth communication nodes; the fourth communication node sends the last N/2 data The bits are 16QAM modulated, and the modulated plurality of 16QAM symbols are sent to the second communication node and the Z fifth communication nodes.

Taking the above terminal and base station as an example, in this embodiment, when the feedback information received by the base station includes reception failure information, and the first channel state information is medium reliability channel state information, the base station will The first N/2 data bits of the data bits are subjected to BPSK modulation, and the last N/2 bits are subjected to QPSK modulation. The first communication node shares the multiple modulation symbols with the X micro base stations. The base station and the micro base station The base station uses the same time-frequency resource to send the multiple modulation symbols to the terminal and the Z special terminals; the fourth communication node performs 16QAM modulation on the last N/2 data bits, and modulates the obtained Multiple 16QAM symbols are sent to the terminal and the Z special terminals.

The beneficial effect of adopting the above technical solution in this embodiment is that the retransmitted data bits use more low-order modulation methods compared to the modulation methods used in the first transmission, thereby increasing the probability of successful reception by the terminal.

Based on the first embodiment shown in Figure 1, a seventh embodiment of the data collaborative processing method in the industrial Internet of Things of the present invention is proposed. The difference between this embodiment and the first embodiment shown in Figure 1 is that when the first When the feedback information received by the communication node includes reception failure information, and the first channel state information is high-reliability channel state information, the first communication node converts the first N/2 of the N data bits bits are subjected to QPSK modulation, and the last N/2 data bits are subjected to 16QAM modulation. The first communication node shares the plurality of modulation symbols with the X third communication nodes. The first communication node and the The third communication node uses the same time-frequency resource to send the plurality of modulation symbols to the second communication node and the Z fifth communication nodes; the fourth communication node sends the last N/2 data The bits are 64QAM modulated, and the modulated plurality of 64QAM symbols are sent to the second communication node and the Z fifth communication nodes.

Taking the above terminal and base station as an example, in this embodiment, when the feedback information received by the base station includes reception failure information, and the first channel state information is high-reliability channel state information, the base station will The first N/2 bits of the data bits are QPSK modulated, and the last N/2 data bits are modulated with 16QAM. The base station shares the multiple modulation symbols with the X micro base stations. The base station and the micro base station use the same time. Frequency resources send the multiple modulation symbols to the terminal and the Z special terminals; the fourth communication node performs 64QAM modulation on the last N/2 data bits, and modulates the multiple 64QAM symbols obtained after modulation Sent to the terminal and the Z special terminals.

The beneficial effect of adopting the above technical solution in this embodiment is that the retransmitted data bits use more low-order modulation methods compared to the modulation methods used in the first transmission, thereby increasing the probability of successful reception by the terminal.

Based on the first embodiment shown in Figure 1, an eighth embodiment of the data collaborative processing method in the industrial Internet of Things of the present invention is proposed. The difference between this embodiment and the first embodiment shown in Figure 1 is that when the first When the channel state information is high-reliability channel state information, when the first communication node sends the N data bits, the number of resources occupied by the demodulation reference signal used by the first communication node is X subcarriers. When the When the first channel state information is medium reliability channel state information, when the first communication node sends the N data bits, the number of resources occupied by the demodulation reference signal used by the first communication node is Y subcarriers, When the first channel state information is low reliability channel state information and the first communication node sends the N data bits, the number of resources occupied by the demodulation reference signal used by the first communication node is Z Subcarriers, where X, Y, and Z are positive integers, X is greater than or equal to twice Y, and Y is greater than or equal to 2 times Z.

Taking the above terminal and base station as an example, in this embodiment, when the first channel state information is high-reliability channel state information and the base station sends the N data bits, the first communication node uses the demodulation The number of resources occupied by the reference signal is Y subcarriers. When the first channel state information is low reliability channel state information and the base station sends the N data bits, the number of resources occupied by the demodulation reference signal used by the base station is Z subcarriers, where, X , Y, and Z are positive integers, X is greater than or equal to twice Y, and Y is greater than or equal to 2 times Z.

The beneficial effect of using the above technical solution in this embodiment is that when the downlink channel quality is relatively good, less time-frequency resources are used to transmit the demodulation reference signal, thereby reducing the control overhead of the system. When the downlink channel quality is relatively poor, less time-frequency resources are used to transmit the demodulation reference signal. Multiple time-frequency resources are used to transmit demodulation reference signals, thereby improving the accuracy of channel estimation and increasing the probability of successful data bit decoding.

The beneficial effect of the data collaborative processing method in the industrial Internet of Things of the present invention is that through the above technical solution, the present invention can overcome the existing data transmission reliability problem in the industrial Internet of Things and improve the reliability and efficiency of data channel transmission.

The above are only preferred embodiments of the present invention, and do not limit the patent scope of the present invention. Under the concept of the present invention, equivalent structural transformations can be made by using the contents of the description and drawings of the present invention, or directly/indirectly used in Other related technical fields are included in the patent protection scope of the present invention.

Claims (8)

1. The data collaborative processing method in the industrial Internet of things is characterized by comprising the following steps of:

the second communication node receives a downlink channel state information reference signal and a positioning reference signal sent by a first communication node, generates first channel state information based on the downlink channel state information reference signal, generates positioning reference signal arrival time information and arrival angle information based on the positioning reference signal, and feeds back the first channel state information, the positioning reference signal arrival time information and the arrival angle information to the first communication node, wherein the first channel state information at least comprises one of low-reliability channel state information, medium-reliability channel state information and high-reliability channel state information;

The first communication node receives the first channel state information, the arrival time information and the arrival angle information of the positioning reference signal;

the first communication node sends uplink sounding reference signal configuration information, wherein the uplink sounding reference signal configuration information at least comprises transmission power configuration information of the second communication node sending the uplink sounding reference signal, and when the first channel state information is low-reliability channel state information, the transmission power configuration information requires the second communication node to need maximum transmission power to send the uplink sounding reference signal; when the first channel state information is medium reliability channel state information, the sending power configuration information requires the second communication node to send the uplink sounding reference signal by using 0.75 times of the maximum sending power; when the first channel state information is high-reliability channel state information, the sending power configuration information requires the second communication node to send the uplink sounding reference signal by using 0.5 times of the maximum sending power;

the first communication node estimates the possible position of the second communication node according to the arrival time and the arrival angle information of the positioning reference signal, and activates X third communication nodes and Y fifth communication nodes which are closest to the possible position, wherein the value of X is determined according to the first channel state information, when the first channel state information is low-reliability channel state information, the value of X is 3, when the first channel state information is medium-reliability channel state information, the value of X is 2, and when the first channel state information is high-reliability channel state information, the value of X is 1; the value of Y is determined according to the first channel state information, when the first channel state information is low-reliability channel state information, the value of Y is 3, and when the first channel state information is medium-reliability channel state information or high-reliability channel state information, the value of Y is 0;

After receiving the uplink sounding reference signal configuration information, the second communication node sends the uplink sounding reference signal according to the uplink sounding reference signal configuration information;

the first communication node receives the uplink sounding reference signal, and determines second channel state information according to the receiving quality of the uplink sounding reference signal, wherein the second channel state information at least comprises one of low-reliability channel state information, medium-reliability channel state information and high-reliability channel state information;

the Y fifth communication nodes receive the uplink sounding reference signals, and Z fifth communication nodes which receive the uplink sounding reference signals and have a received signal-to-noise ratio of more than 20dB are selected from the Y fifth communication nodes, wherein Z is an integer which is more than or equal to 0 and less than or equal to Y;

the first communication node modulates the N data bits, wherein the modulation mode is determined according to the following criteria:

a. if the first channel state information and the second channel state information are both low-reliability channel state information, the first N/3 data bits use a BPSK modulation mode, the middle N/3 data bits use a QPSK modulation mode, and the last N/3 data bits use a 16QAM modulation mode;

b. If the first channel state information is low-reliability channel state information and the second channel state information is medium-reliability channel state information, the first N/4 data bits use a BPSK modulation mode, the middle N/4 data bits use a QPSK modulation mode, and the later N/2 data bits use a 16QAM modulation mode;

c. if the first channel state information is low-reliability channel state information and the second channel state information is high-reliability channel state information, the first N/4 data bits use a BPSK modulation mode, and the second 3N/4 data bits use a 16QAM modulation mode;

d. if the first channel state information is medium reliability channel state information and the second channel state information is low reliability channel state information, QPSK modulation mode is used for the first N/3 data bits, 16QAM modulation mode is used for the middle N/3 data bits, and 64QAM modulation mode is used for the last N/3 data bits;

e. if the first channel state information and the second channel state information are both medium-reliability channel optimal state information, the first N/4 data bits use a QPSK modulation mode, the middle N/4 data bits use a 16QAM modulation mode, and the later N/2 data bits use a 64QAM modulation mode;

f. If the first channel state information is medium-reliability channel state information and the second channel state information is high-reliability channel state information, the first N/4 data bits use a 16QAM modulation mode, and the second N3/4 data bits use a 64QAM modulation mode;

g. if the first channel state information is high-reliability channel state information, the N data bits use a 64QAM modulation mode, wherein N is a positive integer multiple of 72, and the N data bits comprise useful bits and cyclic redundancy check bits;

the first communication node shares a plurality of modulated symbols obtained after modulation to the X third communication nodes;

the first communication node and the X third communication nodes use the same time-frequency resource to send the plurality of modulation symbols to the second communication node and the Y fifth communication nodes;

the second communication node receives the plurality of modulation symbols, the Y fifth communication nodes receive the plurality of modulation symbols, if N data bit checks obtained after processing by any one of the second communication node or the Y fifth communication nodes pass, the second communication node generates feedback information containing reception success information to the first communication node, and if N data bit checks obtained after processing by all communication nodes in the second communication node or the Y fifth communication nodes do not pass, the second communication node generates feedback information containing reception failure information to the first communication node;

The first communication node receives the feedback information, if the feedback information contains receiving failure information, the first communication node determines a fourth communication node which is closest to the second communication node except the X third communication nodes based on the arrival time and the arrival angle information of the positioning reference signals fed back by the second communication node, the first communication node shares the last N/2 data bits in the N data bits to the fourth communication node, the first communication node and the X third communication nodes modulate the first N/2 or N data bits and then retransmit the modulated last N/2 data bits to the second communication node and the Y fifth communication nodes, and the fourth communication node modulates the last N/2 data bits and then retransmits the modulated last N/2 data bits to the second communication node and the Y fifth communication nodes;

before the second communication node feeds back the first channel state information, the second communication node negotiates a generating mode of the first channel state information with the first communication node through signaling, and when the signal-to-interference-and-noise ratio of the downlink channel state information reference signal received by the second communication node is less than or equal to 8dB, the first channel state information comprises low-reliability channel state information; when the signal-to-interference-and-noise ratio of the downlink channel state information reference signal received by the second communication node is greater than 8dB and less than or equal to 15dB, the first channel state information comprises medium-reliability channel state information; when the signal-to-interference-and-noise ratio of the downlink channel state information reference signal received by the second communication node is greater than 15dB, the first channel state information comprises high-reliability channel state information;

When the signal-to-interference-and-noise ratio of the uplink sounding reference signal received by the first communication node is less than or equal to 8dB, the second channel state information comprises low-reliability channel state information; the second channel state information includes medium reliability channel state information when the signal-to-interference-and-noise ratio of the uplink sounding reference signal received by the first communication node is greater than 8dB and less than or equal to 15dB, and includes high reliability channel state information when the signal-to-interference-and-noise ratio of the uplink sounding reference signal received by the first communication node is greater than 15 dB.

2. The method for collaborative processing of data in an industrial internet of things according to claim 1, wherein when the first channel state information is low reliability channel state information, the transmit power configuration information requires the second communication node to repeat eight times of transmitting the uplink sounding reference signal in a time domain; when the first channel state information is medium reliability channel state information, the sending power configuration information requires the second communication node to repeatedly send the uplink sounding reference signal four times in a time domain; when the first channel state information is high-reliability channel state information, the sending power configuration information requires the second communication node to repeatedly send the uplink sounding reference signal twice in a time domain.

3. The method according to claim 1, wherein when the feedback information received by the first communication node includes reception failure information and the first channel state information is low reliability channel state information, the first communication node BPSK modulates the N data bits, the first communication node shares the plurality of modulation symbols to the X third communication nodes, and the first communication node and the third communication node transmit the plurality of modulation symbols to the second communication node and the Y fifth communication nodes using the same time-frequency resource; and the fourth communication node performs BPSK modulation on the post-N/2 data bits, and sends a plurality of BPSK symbols obtained after modulation to the second communication node and the Y fifth communication nodes.

4. The method according to claim 1, wherein when the feedback information received by the first communication node includes reception failure information and the first channel state information is medium reliability channel state information, the first communication node performs BPSK modulation on first N/2 data bits of the N data bits and then performs QPSK modulation on second N/2 bits, the first communication node shares the plurality of modulation symbols to the X third communication nodes, and the first communication node and the third communication node transmit the plurality of modulation symbols to the second communication node and the Y fifth communication nodes using the same time-frequency resource; and the fourth communication node carries out 16QAM modulation on the post N/2 data bits, and sends a plurality of 16QAM symbols obtained after modulation to the second communication node and the Y fifth communication nodes.

5. The method according to claim 1, wherein when the feedback information received by the first communication node includes reception failure information and the first channel state information is high reliability channel state information, the first communication node performs QPSK modulation on first N/2 bits of the N data bits and then performs 16QAM modulation on second N/2 bits, the first communication node shares the plurality of modulation symbols to the X third communication nodes, and the first communication node and the third communication node transmit the plurality of modulation symbols to the second communication node and the Y fifth communication nodes using the same time-frequency resource; the fourth communication node carries out 64QAM modulation on the post-N/2 data bits, and sends a plurality of 64QAM symbols obtained after modulation to the second communication node and the Y fifth communication nodes.

6. The method for collaborative processing of data in an industrial internet of things according to claim 1 wherein the first communication node transmits only the downlink channel state information reference signal over a time domain in which the downlink channel state information reference signal is located.

7. The method for collaborative processing of data in an industrial internet of things according to claim 1, wherein when the first channel state information is high reliability channel state information, the second communication node transmits only the uplink sounding reference signal in a time domain where the uplink sounding reference signal is located.

8. The method according to claim 1, wherein when the first channel state information is high reliability channel state information, the number of resources occupied by demodulation reference signals used by the first communication node is X subcarriers when the first communication node transmits the N data bits, the number of resources occupied by demodulation reference signals used by the first communication node is Y subcarriers when the first channel state information is medium reliability channel state information, and the number of resources occupied by demodulation reference signals used by the first communication node is X subcarriers when the first communication node transmits the N data bits, and the number of resources occupied by demodulation reference signals used by the first communication node is Z subcarriers when the first channel state information is low reliability channel state information, wherein X is a positive integer greater than or equal to Y and Y is greater than or equal to 2 times Z when the first communication node transmits the N data bits.