CN113573347B - Data cooperation processing method in industrial Internet of things - Google Patents

Data cooperation processing method in industrial Internet of things Download PDF

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Publication number
CN113573347B
CN113573347B CN202110799958.1A CN202110799958A CN113573347B CN 113573347 B CN113573347 B CN 113573347B CN 202110799958 A CN202110799958 A CN 202110799958A CN 113573347 B CN113573347 B CN 113573347B
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channel state
state information
communication node
data bits
reference signal
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CN113573347A (en
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王洋
陈小娟
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Shenzhen Polytechnic
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Shenzhen Polytechnic
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/04—Arrangements for maintaining operational condition
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/0215—Traffic management, e.g. flow control or congestion control based on user or device properties, e.g. MTC-capable devices
    • H04W28/0221—Traffic management, e.g. flow control or congestion control based on user or device properties, e.g. MTC-capable devices power availability or consumption
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/0226—Traffic management, e.g. flow control or congestion control based on location or mobility
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/0231—Traffic management, e.g. flow control or congestion control based on communication conditions

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 cooperation processing method in industrial Internet of things
Technical Field
The invention relates to the technical field of wireless communication, in particular to a data cooperation processing method in the industrial Internet of things.
Background
The 5G can meet the diversified business demands of people in various areas such as residence, work, leisure, traffic and the like, and can provide ultra-high definition video, virtual video reality, augmented reality, cloud desktop, online games and other extreme business experiences for users even in the scenes with ultra-high flow density, ultra-high connection number density and ultra-high mobility characteristics such as dense residential areas, offices, stadiums, outdoor parties, subways, expressways, high-speed rails, wide area coverage and the like. Meanwhile, 5G is also permeated into the fields of Internet of things and various industries and is deeply fused with industrial facilities, medical instruments, vehicles and the like, so that the diversified business requirements of the vertical industries such as industry, medical treatment, traffic and the like are effectively met, and real 'everything interconnection' is realized.
The 5G application scenarios can be divided into two main categories, namely mobile broadband (MBB, mobile Broad band) and internet of things (IoT, internet of Things), where the main technical requirement for mobile broadband access is high capacity, providing high data rates to meet the growing demand for data traffic. The internet of things is mainly driven by the demand of machine communication (MTC, machine Type Communication), and can be further divided into two types, including low-rate mass machine communication (MMC, massive Machine Communication) and low-latency reliable machine communication. For mass machine communication with low rate, mass nodes are accessed with low rate, transmitted data packets are usually smaller, the interval time is relatively longer, and the cost and the power consumption of the nodes are also usually low; for machine communication with low time delay and high reliability, the method is mainly oriented to machine communication with relatively high requirements on real-time performance and reliability, such as real-time alarm, real-time monitoring and the like.
In the fifth generation mobile communication system, a problem to be solved is that data in an industrial internet of things scene is efficiently and reliably transmitted, and a common solution can seriously reduce the performance of a network under the condition of lower channel estimation accuracy.
Based on the analysis, the invention provides a data collaborative processing method in the industrial Internet of things.
Disclosure of Invention
The invention mainly aims to provide a data collaborative processing method in an industrial Internet of things, and aims to improve the reliability and efficiency of data transmission in the industrial Internet of things.
In order to achieve the above purpose, the present invention provides a data collaboration processing method in an industrial internet of things, the method comprising the following steps:
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 state information, the first N/4 data bits use QPSK modulation mode, the middle N/4 data bits use 16QAM modulation mode, and the latter N/2 data bits use 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 an integer which 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 Z 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 Z fifth communication nodes pass, the second communication node generates feedback information containing successful information of reception 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 Z fifth communication nodes do not pass, the second communication node generates feedback information containing failure information to the first communication node;
The first communication node receives the feedback information, if the feedback information contains the reception 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 signal fed back by the second communication node, the first communication node shares the last N/2 data bits in the N data ratios 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 first N/2 data bits to the second communication node and the Z 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 Z 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 first channel state information is low-reliability channel state information, the transmission power configuration information requires the second communication node to repeatedly transmit the uplink sounding reference signal eight times 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.
The further technical scheme of the invention is that 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.
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 performs BPSK modulation on 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 use the same time-frequency resource to transmit the plurality of modulation symbols to the second communication node and the Z fifth communication nodes; 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 Z fifth communication nodes.
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 the first N/2 data bits of the N data bits, and then performs QPSK modulation on the second N/2 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 use the same time-frequency resource to transmit the plurality of modulation symbols to the second communication node and the Z fifth communication nodes; 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 Z fifth communication nodes.
When the feedback information received by the first communication node contains receiving failure information and the first channel state information is high-reliability channel state information, the first communication node carries out QPSK modulation on the first N/2 bits of the N data bits, and then carries out 16QAM modulation on the last N/2 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 send the plurality of modulation symbols to the second communication node and the Z fifth communication nodes by 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 Z fifth communication nodes.
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.
According to a further technical scheme of the invention, when the first channel state information is high-reliability channel state information, the second communication node only transmits the uplink sounding reference signal in a time domain where the uplink sounding reference signal is located.
In a further technical solution of the present invention, when the first channel state information is high reliability channel state information, the number of resources occupied by a demodulation reference signal used by the first communication node is X subcarriers when the first communication node transmits the N data bits, when the first channel state information is medium reliability channel state information, the number of resources occupied by a demodulation reference signal used by the first communication node is Y subcarriers when the first communication node transmits the N data bits, and when the first channel state information is low reliability channel state information, the number of resources occupied by a demodulation reference signal used by the first communication node is Z subcarriers when the first communication node transmits the N data bits, wherein, X, Y, Z is a positive integer, X is greater than or equal to two times Y, and Y is greater than or equal to 2 times Z.
The data collaborative processing method in the industrial Internet of things has the advantages that the problem of data transmission reliability in the existing industrial Internet of things can be solved, and the reliability and efficiency of data channel transmission are improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic flow chart of a first embodiment of a data collaboration processing method in the industrial internet of things.
The achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1, the present invention provides a data collaboration processing method in an industrial internet of things, and a first embodiment of the data collaboration processing method in the industrial internet of things of the present invention includes the following steps:
step S10, a 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 arrival time information and arrival angle information of the positioning reference signal based on the positioning reference signal, and feeds back the first channel state information, the arrival time information and the arrival angle information of the positioning reference signal 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.
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, and the present invention will be described in detail below by taking the base station and the terminal as examples.
In this embodiment, a terminal receives a downlink channel state information reference signal and a positioning reference signal sent by a base station, generates first channel state information based on the downlink channel state information reference signal, generates arrival time information and arrival angle information of the positioning reference signal based on the positioning reference signal, and feeds back the first channel state information, the arrival time information and the arrival angle information of the positioning reference signal to the base station, wherein the first channel state information at least includes one of low-reliability channel state information, medium-reliability channel state information and high-reliability channel state information.
The advantage of the adoption of the channel state information division in the embodiment is that the uplink feedback overhead is reduced under the condition of fully considering the actual wireless channel environment, and the uplink frequency spectrum efficiency of the mobile communication system is improved. The feedback positioning related information has the advantages that the base station can determine the micro base station nearby the terminal when the data retransmission is carried out according to the position of the terminal, and the micro base station and the base station cooperate to carry out the data retransmission for the terminal, so that the reliability of the data transmission is improved.
Step S20, 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 base station receives the first channel state information, the arrival time information and the arrival angle information of the positioning reference signals.
Step S30, the first communication node sends uplink sounding reference signal configuration information, where the uplink sounding reference signal configuration information at least includes transmission power configuration information of the second communication node sending uplink sounding reference signals, 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 signals; 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 transmission power configuration information requires the second communication node to transmit the uplink sounding reference signal by using 0.5 times of the maximum transmission power.
In this embodiment, a base station transmits uplink sounding reference signal configuration information, where the uplink sounding reference signal configuration information at least includes transmission power configuration information of a terminal transmitting an uplink sounding reference signal, and when the first channel state information is low reliability channel state information, the transmission power configuration information requires that the terminal needs maximum transmission power to transmit the uplink sounding reference signal; when the first channel state information is medium reliability channel state information, the transmitting power configuration information requires a terminal to transmit the uplink sounding reference signal by using 0.75 times of the maximum transmitting power; when the first channel state information is high reliability channel state information, the transmission power configuration information requires the terminal to transmit the uplink sounding reference signal using 0.5 times of the maximum transmission power.
The reason why the technical scheme is adopted in the embodiment is that reciprocity exists between uplink and downlink channels of the TDD mobile communication system, and the base station can determine the sending power of the uplink signal according to the feedback condition of the downlink, so that the problem that the receiving quality of the uplink signal caused by the uplink coverage problem cannot meet the communication requirement is avoided.
Step S40, 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 the first communication node activates X third communication nodes and Y fifth communication nodes 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; and determining the value of Y according to the first channel state information, wherein 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.
In this embodiment, the third communication node may be, for example, a micro base station, and the fifth communication node may be, for example, a special terminal. In this embodiment, the base station estimates the possible positions of the terminals according to the arrival time and the arrival angle information of the positioning reference signal, and activates X micro base stations and Y special terminals closest to the possible positions, where 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; and determining the value of Y according to the first channel state information, wherein 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.
The technical scheme has the beneficial effects that the base station determines the number of micro base stations which need to cooperate with the base station to carry out downlink data transmission and the number of special terminals which need to cooperate with the terminal to receive the downlink data according to the downlink channel state information between the base station and the terminal, so that the probability of the terminal to successfully receive the downlink data is improved.
Step S50, after receiving the configuration information of the uplink sounding reference signal, the second communication node sends the uplink sounding reference signal according to the configuration information of the uplink sounding reference signal.
And 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 receiving quality of the uplink sounding reference signal, where the second channel state information includes at least one of 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 according to the reception quality of the uplink sounding reference signal, where the second channel state information includes at least one of low reliability channel state information, medium reliability channel state information, and high reliability channel state information.
The reason why the technical scheme is adopted in the embodiment is that although the uplink and downlink channels of the TDD mobile communication system are reciprocal, uplink and downlink interference is not reciprocal, so that the uplink and downlink channel state information is inconsistent.
And step S70, 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 greater than 20dB are selected from the Y fifth communication nodes, wherein 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 sounding reference signal, and Z special terminals that receive the uplink sounding reference signal and have a received signal-to-noise ratio greater than 20dB are selected from the Y special terminals, where Z is an integer greater than or equal to 0 and less than or equal to Y.
In step S80, the first communication node modulates N data bits.
In this embodiment, the base station modulates N data bits, where 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.
The above technical solution is adopted in this embodiment, and in this case, the quality of the wireless channel between the base station and the terminal is relatively poor, so that a relatively large number of low-order modulation modes need to be adopted to ensure the reliability of transmission.
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 BPSK modulation mode, the middle N/4 data bits use QPSK modulation mode, and the latter N/2 data bits use 16QAM modulation mode.
The above technical scheme is adopted in this embodiment, which considers that the downlink channel between the base station and the terminal has stronger interference, so that the downlink SINR is higher, but the downlink SNR is better analyzed from the second channel state information, so that the use of a low-order modulation mode can be reduced.
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 BPSK modulation mode, and the second 3N/4 data bits use 16QAM modulation mode.
The above technical scheme is adopted in this embodiment, which considers that the downlink channel between the base station and the terminal has stronger interference, so that the downlink SINR is higher, but the downlink SNR is very good from the second channel state information analysis, so that the use of the low-order modulation mode can be further reduced.
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.
The above technical scheme is adopted in this embodiment, and it is considered that the downlink channel of the base station and the terminal is better at this time, so that the BPSK low-order modulation method may not be applied.
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 QPSK modulation mode, the middle N/4 data bits use 16QAM modulation mode, and the latter N/2 data bits use 64QAM modulation mode.
The above technical scheme is adopted in this embodiment, and the base station and the terminal have better downlink channels and better uplink channels at this time, so that the reliability of the information that the downlink channels are better is proved to be very high, and therefore, more data bits can 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.
According to the technical scheme, the fact that the downlink channels of the base station and the terminal are better and the uplink channels are better is considered at the moment, so that interference of the downlink channels is proved, and the interference terminal sides are eliminated by adopting an optimized receiver algorithm, so that more data bits can be modulated by using a 64QAM modulation mode.
g. And if the first channel state information is high-reliability channel state information, using a 64QAM modulation mode for the N data bits, wherein N is an integer which is a positive integer multiple of 72, and the N data bits comprise useful bits and cyclic redundancy check bits.
In this case, it is preferable to explain that the downlink channel is excellent, and the N data bits may be modulated directly by using the 64QAM modulation scheme without considering the uplink channel.
And step S90, the first communication node shares a plurality of modulated symbols obtained after modulation to the X third communication nodes.
And the base station shares a plurality of modulation symbols obtained after modulation to 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.
And the base station and the X micro base stations use the same time-frequency resource to send the plurality of modulation symbols to the terminal and the Y special terminals.
Step S110, the second communication node receives the plurality of modulation symbols, the Z fifth communication nodes receive the plurality of modulation symbols, if N data bit check obtained after processing by the second communication node or any one of the Z fifth communication nodes passes, the second communication node generates feedback information including reception success information to the first communication node, and if N data bit check obtained after processing by the second communication node or all communication nodes in the Z fifth communication nodes fails, the second communication node generates feedback information including reception failure information to the first communication node.
The terminal and the Z special terminals receive a plurality of modulation symbols, if the N data bits obtained after the terminal and any one of the Z special terminals are processed pass the verification, the terminal generates feedback information containing the successful information of the reception to the base station, and if the N data bits obtained after the terminal and the Z special terminals are processed do not pass the verification, the terminal generates feedback information containing the failed information of the reception to the base station.
Step S120, the first communication node receives the feedback information, if the feedback information includes reception 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 signal fed back by the second communication node, the first communication node shares the last N/2 data bits of 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 Z 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 Z fifth communication nodes.
The base station receives the feedback information, if the feedback information contains the receiving failure information, the base station determines the approximate position of the terminal based on the arrival time and the arrival angle information of the positioning reference signal fed back by the terminal, then finds a micro base station (called a fourth base station) which is closest to the terminal except the X micro base stations, the base station shares the last N/2 data bits in the N data bits to the micro base station, the base station modulates the last N/2 data bits and then retransmits the modulated last N/2 data bits to the terminal and Z special terminals, and the fourth base station modulates the last N/2 data bits and retransmits the modulated last N/2 data bits to the terminal and Z special terminals. Here, the modulation scheme used in retransmission of N data bits needs to be adjusted, so that the order of the modulation scheme is appropriately reduced, and the reliability of data transmission is improved.
In this embodiment, the first communication node transmits only 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 the downlink power to transmit the downlink sounding reference signal, thereby improving the estimation accuracy of the base station to the downlink channel.
And 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 uplink power to send uplink sounding reference signal, so as to improve the estimation accuracy of the base station to the uplink channel.
According to the technical scheme, the problem of data transmission reliability in the existing industrial Internet of things can be solved, and the reliability and efficiency of data channel transmission are improved.
Based on the first embodiment shown in fig. 1, a second embodiment of a data collaboration processing method in the industrial internet of things is provided, and the difference between the second embodiment and the first embodiment shown in fig. 1 is that before the second communication node feeds back the first channel state information, the second communication node negotiates with the first communication node about a generation mode of the first channel state information through signaling, and when a 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 includes 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.
Taking the terminal and the base station as an example, in this embodiment, before the terminal feeds back the first channel state information, the terminal negotiates with the base station through signaling about a generating mode of the first channel state information, and when a signal-to-interference-and-noise ratio of the downlink channel state information reference signal received by the terminal is less than or equal to 8dB, the first channel state information includes low-reliability channel state information; when the signal-to-interference-and-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 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 terminal is greater than 15dB, the first channel state information comprises high-reliability channel state information.
The technical scheme has the beneficial effects that the base station and the terminal can adjust the intervals of the channel state information with different reliabilities according to the actual conditions of the wireless channel, so that the wireless channel environment change can be well adapted.
Based on the first embodiment shown in fig. 1, a third embodiment of a data collaboration processing method in the industrial internet of things is provided, and the difference between the present embodiment and the first embodiment shown in fig. 1 is that when the first channel state information is low reliability channel state information, the transmission power configuration information requires the second communication node to repeat eight times to transmit 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.
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 transmission power configuration information requests the terminal to repeat eight times of transmission of the uplink sounding reference signal in a time domain; when the first channel state information is medium reliability channel state information, the transmitting power configuration information requires the terminal to repeatedly transmit the uplink sounding reference signal four times in a time domain; when the first channel state information is high-reliability channel state information, the transmitting power configuration information requires the terminal to repeatedly transmit the uplink sounding reference signal twice in a time domain.
By adopting the technical scheme, the embodiment utilizes the uplink and downlink reciprocity of the channel, improves the transmission quality of the uplink sounding reference signal as much as possible, and ensures that the base station obtains more accurate judgment on the downlink channel state information.
Based on the first embodiment shown in fig. 1, a fourth embodiment of a data collaboration processing method in the industrial internet of things is provided, where the difference between the present embodiment and the first embodiment shown in fig. 1 is that 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 includes 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.
Taking the terminal and the base station as an example, in this embodiment, when the signal-to-interference-and-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; and when the signal-to-interference-plus-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 comprises medium-reliability channel state information, and when the signal-to-interference-plus-noise ratio of the uplink sounding reference signal received by the base station is greater than 15dB, the second channel state information comprises high-reliability channel state information.
The technical scheme has the beneficial effects that the base station and the terminal can adjust the intervals of the channel state information with different reliabilities according to the actual conditions of the wireless channel, so that the wireless channel environment change can be well adapted.
Based on the first embodiment shown in fig. 1, a fifth embodiment of a data collaboration processing method in the industrial internet of things according to the present invention is provided, and the difference between the present embodiment and the first embodiment shown in fig. 1 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, the first communication node performs BPSK modulation on 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 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 post-N/2) data bits, and transmits a plurality of BPSK symbols obtained after modulation to the second communication node and the Z fifth communication nodes.
Taking the above terminal and the 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 performs BPSK modulation on the N data bits, the base station shares the plurality of modulation symbols to the X micro base stations, and the base station and the micro base station use the same time-frequency resource to transmit the plurality of modulation symbols to the terminal and the Z special terminals; and the fourth communication node carries out BPSK modulation on the post-N/2 data bits, and sends a plurality of BPSK symbols obtained after modulation to the terminal and the Z special terminals.
The technical scheme has the beneficial effects that the probability of successful reception of the terminal is improved by using the BPSK modulation mode for all the data bits and transmitting part of the data bits through the micro base station which is closer to the terminal.
Based on the first embodiment shown in fig. 1, a sixth embodiment of a data collaboration processing method in the industrial internet of things according to the present invention is provided, and the difference between the present embodiment and the first embodiment shown in fig. 1 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, the first communication 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 plurality of modulation symbols to 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; 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 Z fifth communication nodes.
Taking the above terminal and the 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 performs BPSK modulation on the first N/2 data bits of the N data bits, and then performs QPSK modulation on the N/2 bits, the first communication node shares the plurality of modulation symbols to the X micro base stations, and the base station and the micro base stations use the same time-frequency resource to transmit the plurality of modulation symbols to the terminal and the Z special terminals; 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 terminal and the Z special terminals.
The technical scheme has the beneficial effects that compared with the modulation mode used for the first transmission, the method has the advantages that more low-order modulation modes are used for retransmitted data bits, and the probability of successful reception of the terminal is improved.
Based on the first embodiment shown in fig. 1, a seventh embodiment of a data collaboration processing method in the industrial internet of things according to the present invention is provided, and the difference between the seventh embodiment and the first embodiment shown in fig. 1 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, the first communication node performs QPSK modulation on the first N/2 bits of the N data bits, and then performs 16QAM modulation on the N/2 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 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 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 Z fifth communication nodes.
Taking the above terminal and the 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 performs QPSK modulation on the first N/2 bits of the N data bits, and performs 16QAM modulation on the second N/2 data bits, the base station shares the multiple modulation symbols to the X micro base stations, and the base station and the micro base station use the same time-frequency resource to transmit the multiple modulation symbols to the terminal and the Z special terminals; and 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 terminal and the Z special terminals.
The technical scheme has the beneficial effects that compared with the modulation mode used for the first transmission, the method has the advantages that more low-order modulation modes are used for retransmitted data bits, and the probability of successful reception of the terminal is improved.
Based on the first embodiment shown in fig. 1, an eighth embodiment of a data cooperative processing method in the industrial internet of things according to the present invention is different from the first embodiment shown in fig. 1 in that, when the first channel state information is high reliability channel state information, the number of resources occupied by the demodulation reference signal used by the first communication node is X subcarriers when the first communication node transmits the N data bits, when the first channel state information is medium reliability channel state information, 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 when the first channel state information is low reliability channel state information, the number of resources occupied by the demodulation reference signal used by the first communication node is Z subcarriers, wherein X is a positive integer, X is greater than or equal to two times Y, and Y is greater than or equal to 2 times Z.
Taking the terminal and the base station as examples, in this embodiment, when the first channel state information is high reliability channel state information, the number of resources occupied by the demodulation reference signal used by the first communication node is X subcarriers when the base station transmits the N data bits, when the first channel state information is medium reliability channel state information, the number of resources occupied by the demodulation reference signal used by the base station is Y subcarriers, when the first channel state information is low reliability channel state information, the number of resources occupied by the base station is Z subcarriers when the base station transmits the N data bits, wherein X, Y, Z is a positive integer, X is greater than or equal to two times Y, and Y is greater than or equal to 2 times Z.
The technical scheme has the advantages that when the downlink channel quality is relatively good, less time-frequency resources are used for transmitting the demodulation reference signals, so that the control overhead of the system is reduced, when the downlink channel quality is relatively poor, more time-frequency resources are used for transmitting the demodulation reference signals, so that the accuracy of channel estimation is improved, and the probability of successful decoding of data bits is improved.
The data collaborative processing method in the industrial Internet of things has the advantages that the problem of data transmission reliability in the existing industrial Internet of things can be solved, and the reliability and efficiency of data channel transmission are improved.
The foregoing description is only of the preferred embodiments of the present invention and is not intended to limit the scope of the invention, and all equivalent structural changes made by the specification and drawings of the present invention or direct/indirect application in other related technical fields are included in the 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.
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