WO2020125552A1

WO2020125552A1 - Method for transmitting information in internet of things

Info

Publication number: WO2020125552A1
Application number: PCT/CN2019/125174
Authority: WO
Inventors: 王洋
Original assignee: 深圳职业技术学院
Priority date: 2018-12-21
Filing date: 2019-12-13
Publication date: 2020-06-25
Also published as: CN109547173A; CN109547173B

Abstract

The present invention is applicable to the field of radio communications, and provided thereby is a method for transmitting information in the Internet of Things, the transmission method comprising the following steps: step S1: a first terminal determining a number N1 of data bits to be sent and a working environment temperature T1; step S2: a second terminal receiving a first reference signal; step S3: a third terminal receiving the first reference signal; step S4: after receiving first feedback information, the first terminal solving the problem of overcoming one device in existing machine communication being unable to effectively transmit data generated thereby due to channel-related, power-related or other reasons.

Description

Information transmission method in Internet of Things

Technical field

The invention belongs to the field of wireless communication, and particularly relates to a method for transmitting information in the 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, outdoor gatherings, subways, expressways, high-speed rail, and wide-area coverage. Dense, ultra-high connection number density, and ultra-high mobility features can also provide users with the ultimate business experience of ultra-high-definition video, virtual reality, augmented reality, cloud desktop, and online games. At the same time, 5G will also infiltrate the Internet of Things and various industries, deeply integrate with industrial facilities, medical instruments, transportation, etc., effectively meet the diversified business needs of vertical industries such as industry, medical, transportation, etc. "Internet of Everything".

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

In the fifth generation mobile communication system, the core scenario that needs to be studied in depth is machine communication, such as Industry 4.0, Internet of Vehicles, robots, etc. When a device cannot effectively transmit the data generated by itself due to channels, power, environment, etc., Need to design a method of information transmission in the Internet of Things.

Summary of the invention

The purpose of the present invention is to provide an information transmission method in the Internet of Things, aiming to solve the problem that a device in the existing machine communication cannot effectively transmit the data generated by itself due to channels, power, etc.

The present invention is implemented in this way, an information transmission method in the Internet of Things, the transmission method includes the following steps:

Step S1: The first terminal determines the number of data bits to be sent N1 and the working environment temperature T1. When the first terminal retransmits the N1 data bits to the base station R1 times and all fail, it is determined whether N1 is greater than or equal to T_N, T1 is greater than or equal to T_T and R1 is greater than T_R, if not satisfied, no processing is performed, if satisfied, the first terminal sends a terminal activation request to the base station, and the base station activates the terminal after receiving the terminal activation request , The first terminal sends a first reference signal, where the terminal activation request carries the location information and the number of data bits N1 of the first terminal, and the first terminal sends the terminal activation request by repeating 2*T_R times ;

Step S2: The second terminal receives the first reference signal. If the received signal-to-noise ratio SNR2 of the first reference signal is greater than T_SNR, and the operating environment temperature T2 of the second terminal is less than T_T, the second terminal Sending first feedback information to the first terminal, where the first feedback information includes at least: the number of data bits N2 that the second terminal can assist the first terminal to transmit, and between the second terminal and the base station Channel information, the number of auxiliary transmission points C2 expected by the second terminal;

Step S3: The third terminal receives the first reference signal. If the received signal-to-noise ratio SNR3 of the first reference signal is greater than T_SNR, the working environment temperature T3 of the third terminal is greater than or equal to T_T, and the third terminal Battery usage time is greater than or equal to 24 hours, the third terminal sends second feedback information to the first terminal, and the second feedback information includes at least: the third terminal can assist the first terminal to transmit The number of data bits N3, the spreading codeword information supported by the third terminal, and the number of auxiliary transmission points C3 expected by the third terminal;

Step S4: After receiving the first feedback information, the first terminal determines whether the second terminal can be given the desired number of auxiliary transmission points C2, and if it can, the first terminal selects from the N1 Select X data bits from the data bits to send to the second terminal, where X is an integer greater than or equal to 0 and less than or equal to N2;

Step S5: After receiving the second feedback information, the first terminal determines whether the third terminal C3 can be given the desired number of auxiliary transmission points, and if it can, the first terminal Y data bits are selected from (N1-X) bits to be sent to the third terminal, where Y is an integer greater than or equal to 0 and less than or equal to N3;

Step S6: The first terminal generates third feedback information based on channel information between the second terminal and the base station and spreading codeword information supported by the third terminal, and combines the third feedback information Sent to the base station, wherein the third feedback information includes at least: identification information of the second terminal, the number of data bits to be transmitted by the second terminal X, identification information of the third terminal, the The number Y of data bits to be transmitted by the third terminal, and the spreading codeword information of the third terminal;

Step S7: The base station allocates transmission resources to the first terminal, the second terminal, and the third terminal based on the received third feedback information, where the transmission resources of the first terminal and the second terminal are completely the same. The transmission resources of the third terminal are all available uplink transmission resources of the base station;

Step S8: The first terminal, the second terminal, and the third terminal respectively transmit the (N1-X-Y) data bits, X data bits, and Y data bits according to resources allocated by the base station;

Step S9: after successfully receiving the X data bits, the base station subtracts (C2*X/N2+C3*Y/N3) the number of auxiliary transmission points of the first terminal, and The number of auxiliary transmission points increases (C2*X/N2), and the number of auxiliary transmission points of the third terminal is increased (C3*Y/N3).

A further technical solution of the present invention is that: the first terminal and the second terminal transmit the X data bits through the first carrier frequency, and the first terminal and the third terminal transmit the station through the second carrier frequency Say Y data bits.

A further technical solution of the present invention is that: the channel quality between the second terminal and the base station is greater than or equal to the channel quality between the first terminal and the base station.

A further technical solution of the present invention is that the length of the spreading codeword used by the third terminal is proportional to the working bandwidth of the base station, and the third terminal uses the corresponding spreading codeword to the base station transmission station. Say Y data bits.

A further technical solution of the present invention is: the value of T_N is 5000, the value of T_T is 40 degrees Celsius, and the value of T_R is 6.

A further technical solution of the present invention is that the (N1-X-Y) data bits and the X data bits are uniformly encoded, and the Y data bits are independently encoded.

A further technical solution of the present invention is that: the power used by the third terminal to send the Y data bits on a unit bandwidth is less than or equal to the thermal noise power measured by the base station on the unit bandwidth.

A further technical solution of the present invention is: the first terminal determines the transmission power of the first reference signal based on the number of data bits to be sent N1, wherein the transmission power and the number of data bits to be transmitted N1 Proportional relationship.

A further technical solution of the present invention is that: the first terminal determines the transmission power when the (N1-XY) data bits are sent to the base station based on the number of data bits to be sent (N1-XY), where, The transmission power is in a logarithmic relationship with the number of data bits to be transmitted (N1-XY), P=LOG10(V*B*(N1-XY)), where P is the transmission power and V is an adjustment variable , The value of which is negotiated and confirmed by the base station and the first terminal, and B is the transmission resource allocated by the base station to the first terminal.

A further technical solution of the present invention is that: the second terminal determines the transmission power used when sending the X data bits to the base station based on the number of data bits X, where the transmission power and the number of data bits X is proportional.

The beneficial effect of the present invention is to overcome the problem that a device in the existing machine communication cannot effectively transmit the data generated by itself due to channels, power, etc., and improve the spectrum utilization efficiency of the network.

BRIEF DESCRIPTION

1 is a flowchart of an information transmission method in the Internet of Things provided by an embodiment of the present invention;

2 is a schematic diagram of communication between different terminals and between a terminal and a base station in a method for transmitting information in an Internet of Things according to an embodiment of the present invention;

3 is a schematic diagram of combined data distribution of an information transmission method in the Internet of Things provided by an embodiment of the present invention.

detailed description

The implementation of the technical solution will be described in further detail below with reference to FIGS. 1, 2, and 3. An information transmission method in the Internet of Things includes the following steps:

Example 1

The first terminal determines the number of data bits to be transmitted N1 and the working environment temperature T1. When the first terminal retransmits the N1 data bits to the base station R1 times and all fail, it is determined whether N1 is greater than or equal to T_N, T1 Greater than or equal to T_T and R1 greater than T_R, if not satisfied, no processing is performed, if satisfied, the first terminal sends a terminal activation request to the base station, and the base station activates the terminal after receiving the terminal activation request, the The first terminal sends a first reference signal, where the terminal activation request carries the location information of the first terminal and the number of data bits N1, and the first terminal sends the terminal activation request in a 2*T_R repetition manner. Preferably, the activation request carries the location information of the first terminal and N1. The advantage of this is that the base station activates the terminal near the first terminal according to the location information of the first terminal, to avoid that the terminal far away from the location of the first terminal is also activated. Thereby improving the power efficiency of the entire system. In addition, since the first terminal has sent the above N1 data bits (R1+1) times to the base station, in order to ensure that the base station can successfully receive the activation signaling, the first terminal sends a terminal activation request to the base station through 2*T_R times of repetition .

The second terminal receives the first reference signal, and if the received signal-to-noise ratio SNR2 of the first reference signal is greater than T_SNR, and the operating environment temperature T2 of the second terminal is less than T_T, the second terminal sends the first Feedback information is given to the first terminal, and the first feedback information includes at least: the number of data bits N2 that the second terminal can assist the first terminal to transmit, and the channel between the second terminal and the base station Information, the number of auxiliary transmission points C2 expected by the second terminal.

The third terminal receives the first reference signal, and if the received signal-to-noise ratio SNR3 of the first reference signal is greater than T_SNR, the working environment temperature T3 of the third terminal is greater than or equal to T_T, and the battery of the third terminal is used If the time is greater than or equal to 24 hours, the third terminal sends second feedback information to the first terminal, and the second feedback information includes at least: the number of data bits that the third terminal can assist the first terminal to transmit N3, spreading codeword information supported by the third terminal, and the number C3 of auxiliary transmission points expected by the third terminal.

After receiving the first feedback information, the first terminal determines whether the second terminal can obtain the desired number of auxiliary transmission points C2, and if it can, the first terminal selects from the N1 data bits Select X data bits to send to the second terminal, where X is an integer greater than or equal to 0 and less than or equal to N2.

After receiving the second feedback information, the first terminal determines whether it is possible to give the third terminal the desired number of auxiliary transmission points C3, and if it can, the first terminal selects the remaining (N1- Y data bits among X) bits are selected and sent to the third terminal, where Y is an integer greater than or equal to 0 and less than or equal to N3.

The first terminal generates third feedback information based on channel information between the second terminal and the base station and spreading codeword information supported by the third terminal, and sends the third feedback information to the The base station, wherein the third feedback information includes at least: identification information of the second terminal, the number of data bits to be transmitted by the second terminal X, identification information of the third terminal, the third terminal The number of data bits to be transmitted Y, the spreading codeword information of the third terminal.

The base station allocates transmission resources to the first terminal, the second terminal, and the third terminal based on the received third feedback information, where the transmission resources of the first terminal and the second terminal are completely the same, and the third terminal The transmission resources of are all available uplink transmission resources of the base station.

The first terminal, the second terminal, and the third terminal respectively transmit the (N1-X-Y) data bits, X data bits, and Y data bits according to resources allocated by the base station.

After successfully receiving the X data bits, the base station subtracts (C2*X/N2+C3*Y/N3) the number of auxiliary transmission points of the first terminal to integrate the auxiliary transmission points of the second terminal The number increases (C2*X/N2), and the number of auxiliary transmission points of the third terminal is increased (C3*Y/N3).

Example 2

After receiving the second feedback information, the first terminal determines whether it is possible to give the third terminal the desired number of auxiliary transmission points C3, and if it can, the first terminal selects the remaining (N1- Y data bits among X) bits are selected and sent to the third terminal, where Y is an integer greater than or equal to 0 and less than or equal to N3. Preferably, the first terminal and the second terminal transmit X data bits through the first carrier frequency, and the first terminal and the third terminal transmit Y data bits through the second carrier frequency, where the first carrier frequency and the second carrier frequency It is a carrier frequency above 6GHz, and the second carrier frequency is lower than the first carrier frequency. The benefit of doing this is that the low operating carrier frequency is relatively less sensitive to the working environment, so as to reduce the working environment temperature of the third terminal to the first terminal The impact of data transmission quality with the third terminal.

Example 3

The second terminal receives the first reference signal, and if the received signal-to-noise ratio SNR2 of the first reference signal is greater than T_SNR, and the operating environment temperature T2 of the second terminal is less than T_T, the second terminal sends the first Feedback information is given to the first terminal, and the first feedback information includes at least: the number of data bits N2 that the second terminal can assist the first terminal to transmit, and the channel between the second terminal and the base station Information, the number of auxiliary transmission points C2 expected by the second terminal. Preferably, the channel quality between the second terminal and the base station is greater than or equal to the channel quality between the first terminal and the base station. The advantage of this is that the second terminal helps the first terminal as much as possible in a relatively good working environment temperature Transmit more data to the base station, thereby effectively reducing the transmission burden of the first terminal and improving the spectrum efficiency of the entire system.

Example 4

The first terminal, the second terminal, and the third terminal respectively transmit the (N1-X-Y) data bits, X data bits, and Y data bits according to resources allocated by the base station. Preferably, the length of the spreading codeword used by the third terminal is proportional to the size of the operating bandwidth of the base station. For example, when the baseband operating bandwidth is 5MHz, the length of the spreading codeword used by the third terminal is 8, and the baseband operating bandwidth is 10MHz. , The length of the spreading codeword used by the third terminal is 16, and the third terminal uses the corresponding spreading codeword to transmit Y data bits to the base station. The advantage of this is to reduce the data transmission power of the third terminal as much as possible The interference effect of the third terminal using the full bandwidth to transmit data on the system uplink is reduced, and the spectrum efficiency of the system uplink is also improved.

Example 5

The first terminal determines the number of data bits to be transmitted N1 and the working environment temperature T1. When the first terminal retransmits the N1 data bits to the base station R1 times and all fail, it is determined whether N1 is greater than or equal to T_N, T1 Greater than or equal to T_T and R1 greater than T_R, if not satisfied, no processing is performed, if satisfied, the first terminal sends a terminal activation request to the base station, and the base station activates the terminal after receiving the terminal activation request, the The first terminal sends a first reference signal, where the terminal activation request carries the location information of the first terminal and the number of data bits N1, and the first terminal sends the terminal activation request in a 2*T_R repetition manner. Preferably, the activation request carries the location information of the first terminal and N1. The advantage of this is that the base station activates the terminal near the first terminal according to the location information of the first terminal, to avoid that the terminal far away from the location of the first terminal is also activated. Thereby improving the power efficiency of the entire system. In addition, since the first terminal has sent the above N1 data bits (R1+1) times to the base station, in order to ensure that the base station can successfully receive the activation signaling, the first terminal sends a terminal activation request to the base station through 2*T_R times of repetition . Preferably, the value of T_N is 5000, and the value of T_T is 40 degrees Celsius. The purpose of doing so is that the maximum cache capacity of most low-cost terminals is currently less than or equal to 5000, and the required normal working environment temperature is below 38 degrees Celsius, exceeding the above values After that, the data transmission spectrum efficiency of existing terminals will drop by more than 30%.

Example 6

The first terminal determines the number of data bits to be transmitted N1 and the working environment temperature T1. When the first terminal retransmits the N1 data bits to the base station R1 times and all fail, it is determined whether N1 is greater than or equal to T_N, T1 Greater than or equal to T_T and R1 greater than T_R, if not satisfied, no processing is performed, if satisfied, the first terminal sends a terminal activation request to the base station, and the base station activates the terminal after receiving the terminal activation request, the The first terminal sends a first reference signal, where the terminal activation request carries the location information of the first terminal and the number of data bits N1, and the first terminal sends the terminal activation request in a 2*T_R repetition manner. Preferably, the activation request carries the location information of the first terminal, N1. The advantage of this is that the base station activates the terminal in the vicinity of the first terminal according to the location information of the first terminal, to avoid that the terminal far away from the location of the first terminal is also activated. Thereby improving the power efficiency of the entire system. In addition, since the first terminal has sent the above N1 data bits (R1+1) times to the base station, in order to ensure that the base station can successfully receive the activation signaling, the first terminal sends a terminal activation request to the base station through 2*T_R times of repetition .

The first terminal, the second terminal, and the third terminal respectively transmit the (N1-X-Y) data bits, X data bits, and Y data bits according to resources allocated by the base station. Preferably, as shown in FIG. 3, (N1-XY) data bits and X data bits are uniformly encoded (for example, these bits are encoded by an encoder and output a group of 16-bit cyclic redundancy check bits) , Y data bits are coded independently. The advantage of this is that the amount of data transmitted by the first terminal and the second terminal is usually larger, and the channel quality with the base station is also better, so the first terminal and the second The reception quality of the content sent by the terminal is similar at the base station side, so the data sent by the first terminal and the second terminal to the base station can be uniformly encoded, and the base station side determines the bit formed by (N1-XY) data bits and X data bits as a whole Whether the stream was successfully received. In addition, the third terminal uses lower power to transmit Y data bits using spread spectrum. The channel quality experienced by the third terminal is completely different from that of the first terminal and the second terminal. The Y data bits are coded independently, and the base station side Separately judge whether the Y bits are successfully received, thereby effectively improving the spectrum efficiency of the system and controlling the feedback overhead of the system.

Example 7

The first terminal, the second terminal, and the third terminal respectively transmit the (N1-X-Y) data bits, X data bits, and Y data bits according to resources allocated by the base station. Preferably, the power used by the third terminal to send Y data bits per unit bandwidth is less than or equal to the thermal noise power measured by the base station on the unit bandwidth. The reason for this is that the third terminal uses the entire uplink bandwidth to send data. Controlling its transmission power will cause very large interference to the system uplink, and in severe cases will cause the system to not work, so its transmission power must be controlled.

Example 8

The first terminal determines the number of data bits to be transmitted N1 and the working environment temperature T1. When the first terminal retransmits the N1 data bits to the base station R1 times and all fail, it is determined whether N1 is greater than or equal to T_N, T1 Greater than or equal to T_T and R1 greater than T_R, if not satisfied, no processing is performed, if satisfied, the first terminal sends a terminal activation request to the base station, and the base station activates the terminal after receiving the terminal activation request, the The first terminal sends a first reference signal, where the terminal activation request carries the location information of the first terminal and the number of data bits N1, and the first terminal sends the terminal activation request in a 2*T_R repetition manner. Preferably, the activation request carries the location information of the first terminal and N1. The advantage of this is that the base station activates the terminal near the first terminal according to the location information of the first terminal, to avoid that the terminal far away from the location of the first terminal is also activated. Thereby improving the power efficiency of the entire system. In addition, since the first terminal has sent the above N1 data bits (R1+1) times to the base station, in order to ensure that the base station can successfully receive the activation signaling, the first terminal sends a terminal activation request to the base station through 2*T_R times of repetition . Preferably, the first terminal determines the transmission power of the first reference signal based on the number of data bits to be transmitted N1, where the transmission power is proportional to the number of data bits to be transmitted N1, the reason for this is when the first terminal needs to transmit When the number of data bits is relatively large, I hope there are more terminals to help it carry out data transmission. In order to find these terminals, it is necessary to increase the transmission power of the first reference signal in order to let the terminals with greater coverage content receive the first One reference signal.

Example 9

The first terminal, the second terminal, and the third terminal respectively transmit the (N1-X-Y) data bits, X data bits, and Y data bits according to resources allocated by the base station. Preferably, the first terminal determines the transmission power of sending (N1-XY) data bits to the base station based on the number of data bits to be sent (N1-XY), where the transmission power and the number of data bits to be transmitted (N1-XY) Logarithmic relationship, P=LOG10(V*B*(N1-XY)), where P is the transmit power, V is an adjustment variable, and its value is negotiated and confirmed by the base station and the first terminal, and B is assigned by the base station to The transmission resources of the first terminal. The advantage of doing so is that the more data the first terminal transmits, the more stable the power will not increase without limit, avoiding the improper working environment due to the harsh working environment of the first terminal. The adverse effect caused by the increase of the transmission power of the first terminal on the composition period of the first terminal, such as reducing the service life of the first terminal or failing to work normally, especially the analog device.

Example 10

The first terminal, the second terminal, and the third terminal respectively transmit the (N1-X-Y) data bits, X data bits, and Y data bits according to resources allocated by the base station. Preferably, the second terminal determines the transmission power used when sending X data bits to the first base station based on the number of data bits X, where the transmission power is proportional to the number of data bits X. The advantage of doing so is that the second terminal The working environment is relatively good, so as much as possible by increasing the transmit power of the second terminal to assist the first terminal to send more data and improve the transmission quality of these data.

Adopting this kind of information transmission method in the Internet of Things can overcome the problem that a device in the existing machine communication cannot effectively transmit the data generated by itself due to channels, power, etc., and improve the spectrum utilization efficiency of the network.

The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modification, equivalent replacement and improvement made within the spirit and principle of the present invention should be included in the protection of the present invention Within range.

Claims

An information transmission method in the Internet of Things, characterized in that the transmission method includes the following steps:

Step S1: The first terminal determines the number of data bits to be sent N1 and the working environment temperature T1. When the first terminal retransmits the N1 data bits to the base station R1 times and all fail, it is determined whether N1 is greater than or equal to T_N, T1 is greater than or equal to T_T and R1 is greater than T_R, if not satisfied, no processing is performed, if satisfied, the first terminal sends a terminal activation request to the base station, and the base station activates the terminal after receiving the terminal activation request , The first terminal sends a first reference signal, where the terminal activation request carries the location information and the number of data bits N1 of the first terminal, and the first terminal sends the terminal activation request by repeating 2*T_R times ;

Step S2: The second terminal receives the first reference signal. If the received signal-to-noise ratio SNR2 of the first reference signal is greater than T_SNR, and the operating environment temperature T2 of the second terminal is less than T_T, the second terminal Sending first feedback information to the first terminal, where the first feedback information includes at least: the number of data bits N2 that the second terminal can assist the first terminal to transmit, and between the second terminal and the base station Channel information, the number of auxiliary transmission points C2 expected by the second terminal;

Step S3: The third terminal receives the first reference signal. If the received signal-to-noise ratio SNR3 of the first reference signal is greater than T_SNR, the working environment temperature T3 of the third terminal is greater than or equal to T_T, and the third terminal Battery usage time is greater than or equal to 24 hours, the third terminal sends second feedback information to the first terminal, and the second feedback information includes at least: the third terminal can assist the first terminal to transmit The number of data bits N3, the spreading codeword information supported by the third terminal, and the number of auxiliary transmission points C3 expected by the third terminal;

Step S4: After receiving the first feedback information, the first terminal determines whether the second terminal can be given the desired number of auxiliary transmission points C2, and if it can, the first terminal selects from the N1 Select X data bits from the data bits to send to the second terminal, where X is an integer greater than or equal to 0 and less than or equal to N2;

Step S5: After receiving the second feedback information, the first terminal determines whether the third terminal C3 can be given the desired number of auxiliary transmission points, and if it can, the first terminal Y data bits are selected from (N1-X) bits to be sent to the third terminal, where Y is an integer greater than or equal to 0 and less than or equal to N3;

Step S6: The first terminal generates third feedback information based on channel information between the second terminal and the base station and spreading codeword information supported by the third terminal, and combines the third feedback information Sent to the base station, wherein the third feedback information includes at least: identification information of the second terminal, the number of data bits to be transmitted by the second terminal X, identification information of the third terminal, the The number Y of data bits to be transmitted by the third terminal, and the spreading codeword information of the third terminal;

Step S7: The base station allocates transmission resources to the first terminal, the second terminal, and the third terminal based on the received third feedback information, where the transmission resources of the first terminal and the second terminal are completely the same. The transmission resources of the third terminal are all available uplink transmission resources of the base station;

Step S8: The first terminal, the second terminal, and the third terminal respectively transmit the (N1-X-Y) data bits, X data bits, and Y data bits according to resources allocated by the base station;

Step S9: after successfully receiving the X data bits, the base station subtracts (C2*X/N2+C3*Y/N3) the number of auxiliary transmission points of the first terminal, and The number of auxiliary transmission points increases (C2*X/N2), and the number of auxiliary transmission points of the third terminal is increased (C3*Y/N3).
The transmission method according to claim 1, wherein the first terminal and the second terminal transmit the X data bits through a first carrier frequency, and the first terminal and the third terminal pass The second carrier frequency transmits the Y data bits.
The transmission method according to claim 1, wherein the channel quality between the second terminal and the base station is greater than or equal to the channel quality between the first terminal and the base station.
The transmission method according to claim 1, wherein the length of the spreading codeword used by the third terminal is proportional to the size of the operating bandwidth of the base station, and the third terminal uses the corresponding spreading codeword Transmitting the Y data bits to the base station.
The transmission method according to claim 1, wherein the value of T_N is 5000, the value of T_T is 40 degrees Celsius, and the value of T_R is 6.
The transmission method according to claim 1, wherein the (N1-X-Y) data bits and the X data bits are uniformly encoded, and the Y data bits are independently encoded.
The transmission method according to claim 1, wherein the power used by the third terminal to send the Y data bits on a unit bandwidth is less than or equal to the thermal noise power measured by the base station on the unit bandwidth .
The transmission method according to claim 1, wherein the first terminal determines the transmission power of the first reference signal based on the number N1 of data bits to be sent, wherein the transmission power and the The number N1 of transmitted data bits is directly proportional.
The transmission method according to claim 1, wherein the first terminal determines when to send the (N1-XY) data bits to the base station based on the number of data bits (N1-XY) to be sent Transmit power, where the transmit power is in logarithmic relationship with the number of data bits to be transmitted (N1-XY), P=LOG10(V*B*(N1-XY)), where P is the transmit power , V is an adjustment variable whose value is negotiated and confirmed by the base station and the first terminal, and B is a transmission resource allocated by the base station to the first terminal.
The transmission method according to claim 1, wherein the second terminal determines the transmission power used when sending the X data bits to the base station based on the number of data bits X, wherein the transmission power It is proportional to the number X of data bits.