CN109462869B - Processing method for data competition sending failure in Internet of things - Google Patents

Processing method for data competition sending failure in Internet of things Download PDF

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CN109462869B
CN109462869B CN201811571138.1A CN201811571138A CN109462869B CN 109462869 B CN109462869 B CN 109462869B CN 201811571138 A CN201811571138 A CN 201811571138A CN 109462869 B CN109462869 B CN 109462869B
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terminal
data bits
base station
data
information
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CN109462869A (en
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王洋
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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
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/04—Error control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1867—Arrangements specially adapted for the transmitter end
    • H04L1/1893—Physical mapping arrangements
    • 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
    • H04W28/08—Load balancing or load distribution
    • H04W28/082—Load balancing or load distribution among bearers or channels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/30—TPC using constraints in the total amount of available transmission power
    • H04W52/32—TPC of broadcast or control channels
    • H04W52/325—Power control of control or pilot channels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
    • H04W72/542—Allocation or scheduling criteria for wireless resources based on quality criteria using measured or perceived quality
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/14—Direct-mode setup
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/15—Setup of multiple wireless link connections
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices
    • H04W88/04—Terminal devices adapted for relaying to or from another terminal or user

Abstract

The invention is suitable for the field of wireless communication, and provides a processing method for data competition sending failure in the Internet of things, which comprises the following steps: step S1: the first terminal determines N1 data bits to be transmitted, step S2: the second terminal receives the first reference signal, and step S3: the third terminal receives the first reference signal, and step S4: after the first terminal receives the first feedback information, step S5: after the first terminal receives the second feedback information, the problem that a receiver cannot successfully receive any data due to the fact that a plurality of devices share the same resource to send data in a competition mode and the number of the devices sending the data is large in the existing machine communication is solved.

Description

Processing method for data competition sending failure in Internet of things
Technical Field
The invention belongs to the field of wireless communication, and particularly relates to a method for processing data competition sending failure in the Internet of things.
Background
The 5G can meet diversified business requirements of people in various areas such as residence, work, leisure and traffic, and can provide extremely-sophisticated business experience such as ultra-high-definition video, virtual reality, augmented reality, cloud desktops and online games for users even in scenes with ultra-high traffic density, ultra-high connection number density and ultra-high mobility characteristics such as dense residential areas, offices, stadiums, outdoor gatherings, subways, expressways, high-speed rails and wide area coverage. Meanwhile, 5G can permeate into the fields of the Internet of things and various industries, is deeply integrated with industrial facilities, medical instruments, vehicles and the like, effectively meets the diversified business requirements of the vertical industries such as industry, medical treatment, transportation and the like, and realizes real 'everything interconnection'.
The 5G application scenarios can be divided into two broad categories, namely Mobile Broadband (MBB) and Internet of Things (IoT). Among these, the main technical requirements for mobile broadband access are high capacity, providing high data rates to meet the ever-increasing demand for data services. The internet of things is mainly driven by the requirement of Machine Communication (MTC), and can be further divided into two types, including low-speed Mass Machine Communication (MMC) and low-latency high-reliability Machine Communication. For the low-speed mass machine communication, mass nodes are accessed at a low speed, the transmitted data packets are usually small, the interval time is relatively long, and the cost and the power consumption of the nodes are usually low; for machine communication with low time delay and high reliability, the method is mainly used for machine communication with higher requirements on instantaneity and reliability, such as real-time alarm, real-time monitoring and the like.
In the fifth generation mobile communication system, the most deeply studied core scenario is machine communication, such as industrial 4.0, internet of vehicles, robots, and the like, when a plurality of devices share the same resource and transmit data in a competitive manner and the number of devices transmitting data at the same time is very large, a receiver cannot successfully receive any data, and a processing method for data competition transmission failure in the internet of things needs to be designed.
Disclosure of Invention
The invention aims to provide a method for processing data competition sending failure in the Internet of things, and aims to solve the problem that a receiver cannot successfully receive any data when a plurality of devices share the same resource to send data in a competition mode and the number of devices sending data is very large in the existing machine communication.
The invention is realized in such a way that a processing method for data competition sending failure in the Internet of things comprises the following steps:
step S1: the method comprises the steps that a first terminal determines N1 data bits to be sent, the first terminal transmits (R1+1) times of the N1 data bits to a base station by using contention resources and fails completely, whether N1 is greater than or equal to T _ N, the working environment temperature T1 is greater than or equal to T _ T and the retransmission times R1 are greater than T _ R is met or not is judged, if not, no processing is carried out, if yes, the first terminal sends data transmission failure information to the base station, the first terminal sends the data transmission failure information in a 2 x T _ R repeated mode, if the receiving power of the data transmission failure information received by the base station is greater than T _ P, the base station sends a terminal activation signaling, the terminal is activated, and the first terminal sends a first reference signal;
step S2: 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 first feedback information to the first terminal, where the first feedback information at least includes: the number of data bits N2 that the second terminal can assist the first terminal in transmitting, channel information between the second terminal and the base station, and the number of auxiliary transmission credits that the second terminal expects to be C2;
step S3: a 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 operating environment temperature T3 of the third terminal is greater than or equal to T _ T, and the battery life of the third terminal is greater than or equal to 24 hours, the third terminal sends second feedback information to the first terminal, where the second feedback information at least includes: the number of data bits N3 that the third terminal can assist the first terminal in transmitting, spreading code word information supported by the third terminal, the number of credits for assisting in transmitting that the third terminal desires to obtain, C3;
step S4: after receiving the first feedback information, the first terminal determines whether the number of auxiliary transmission integrals C2 expected by the second terminal can be given, if so, the first terminal selects X data bits from the N1 data bits and sends the X data bits to the second terminal, wherein 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 number of auxiliary transmission integrals C3 expected by the third terminal can be given, if yes, the first terminal selects Y data bits from the remaining (N1-X) bits to send to the third terminal, wherein 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 code word information supported by the third terminal, and sends the third feedback information to the base station, where the third feedback information at least includes: the identification information of the second terminal, the number X of data bits to be transmitted by the second terminal, the identification information of the third terminal, the number Y of data bits to be transmitted by the third terminal, and the spread spectrum 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, wherein the transmission resources of the first terminal and the second terminal are completely the same, and the transmission resource of the third terminal is all available uplink transmission resources of the base station;
step S8: the first terminal, the second terminal and the third terminal respectively transmit (N1-X-Y) data bits, X data bits and Y data bits according to the resources allocated by the base station;
step S9: after the base station successfully receives the X data bits, the base station subtracts the number of auxiliary transmission integrals of the first terminal (C2 × X/N2+ C3 × Y/N3), increases the number of auxiliary transmission integrals of the second terminal (C2 × X/N2), and increases the number of auxiliary transmission integrals of the third terminal (C3 × Y/N3).
The further technical scheme of the invention is as follows: and 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 transmit the Y data bits through a second carrier frequency.
The further technical scheme of the invention is as follows: and 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 further technical scheme of the invention is as follows: the length of the spread spectrum code word used by the third terminal is in direct proportion to the size of the working bandwidth of the base station, and the third terminal transmits the Y data bits to the base station by using the corresponding spread spectrum code word.
The further technical scheme of the invention is as follows: the value of T _ N is 5000, the value of T _ T is 40 ℃, the value of T _ R is 6, and the value of T _ P is-60 dBm.
The further technical scheme of the invention is as follows: the (N1-X-Y) data bits and the X data bits are uniformly encoded, and the Y data bits are independently encoded.
The further technical scheme of the invention is as follows: and the power used by the third terminal for sending 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 further technical scheme of the invention is as follows: and the first terminal determines the transmission power of the first reference signal based on the number N1 of the data bits to be transmitted, wherein the transmission power is in direct proportion to the number N1 of the data bits to be transmitted.
The further technical scheme of the invention is as follows: and the first terminal determines the transmission power when the (N1-X-Y) data bits are transmitted to the base station based on the number of the data bits to be transmitted (N1-X-Y), wherein the transmission power is in a logarithmic relation with the number of the data bits to be transmitted (N1-X-Y), and P is LOG10(V B (N-X-Y)), wherein P is the transmission power, V is a regulating variable, the value of which is negotiated and confirmed by the base station and the first terminal, and B is the transmission resource allocated to the first terminal by the base station.
The further technical scheme of the invention is as follows: and the second terminal determines the transmitting power used when the X data bits are sent to the base station based on the data bit number X, wherein the transmitting power is in direct proportion to the data bit number X.
The invention has the beneficial effects that: the problem that a receiver cannot successfully receive any data due to the fact that a plurality of devices share the same resource to send data in a competition mode and the number of the devices sending the data is large in the existing machine communication is solved, and the frequency spectrum use efficiency of a network is improved.
Drawings
Fig. 1 is a flowchart of a method for processing a data contention transmission failure in an internet of things according to an embodiment of the present invention;
fig. 2 is a schematic diagram of communication between different terminals and between a terminal and a base station in a processing method for data contention transmission failure in the internet of things according to the embodiment of the present invention;
fig. 3 is a schematic diagram of combined data allocation of a processing method for data contention transmission failure in the internet of things according to the embodiment of the present invention.
Detailed Description
In the following, referring to fig. 1, fig. 2, and fig. 3, a method for processing data contention transmission failure in the internet of things is described in further detail, where the method includes the following steps:
step S1: the method comprises the steps that a first terminal determines N1 data bits to be sent, the first terminal transmits (R1+1) times of the N1 data bits to a base station by using contention resources and fails completely, whether N1 is greater than or equal to T _ N, the working environment temperature T1 is greater than or equal to T _ T and the retransmission times R1 are greater than T _ R is met or not is judged, if not, no processing is carried out, if yes, the first terminal sends data transmission failure information to the base station, the first terminal sends the data transmission failure information in a 2 x T _ R repeated mode, if the receiving power of the data transmission failure information received by the base station is greater than T _ P, the base station sends a terminal activation signaling, the terminal is activated, and the first terminal sends a first reference signal;
step S2: 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 first feedback information to the first terminal, where the first feedback information at least includes: the number of data bits N2 that the second terminal can assist the first terminal in transmitting, channel information between the second terminal and the base station, and the number of auxiliary transmission credits that the second terminal expects to be C2;
step S3: a 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 operating environment temperature T3 of the third terminal is greater than or equal to T _ T, and the battery life of the third terminal is greater than or equal to 24 hours, the third terminal sends second feedback information to the first terminal, where the second feedback information at least includes: the number of data bits N3 that the third terminal can assist the first terminal in transmitting, spreading code word information supported by the third terminal, the number of credits for assisting in transmitting that the third terminal desires to obtain, C3;
step S4: after receiving the first feedback information, the first terminal determines whether the number of auxiliary transmission integrals C2 expected by the second terminal can be given, if so, the first terminal selects X data bits from the N1 data bits and sends the X data bits to the second terminal, wherein 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 number of auxiliary transmission integrals C3 expected by the third terminal can be given, if yes, the first terminal selects Y data bits from the remaining (N1-X) bits to send to the third terminal, wherein 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 code word information supported by the third terminal, and sends the third feedback information to the base station, where the third feedback information at least includes: the identification information of the second terminal, the number X of data bits to be transmitted by the second terminal, the identification information of the third terminal, the number Y of data bits to be transmitted by the third terminal, and the spread spectrum 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, wherein the transmission resources of the first terminal and the second terminal are completely the same, and the transmission resource of the third terminal is all available uplink transmission resources of the base station;
step S8: the first terminal, the second terminal and the third terminal respectively transmit (N1-X-Y) data bits, X data bits and Y data bits according to the resources allocated by the base station;
step S9: after the base station successfully receives the X data bits, the base station subtracts the number of auxiliary transmission integrals of the first terminal (C2 × X/N2+ C3 × Y/N3), increases the number of auxiliary transmission integrals of the second terminal (C2 × X/N2), and increases the number of auxiliary transmission integrals of the third terminal (C3 × Y/N3).
Example 1
The method comprises the steps that a first terminal determines N1 data bits to be sent, the first terminal transmits (R1+1) times of the N1 data bits to a base station by using contention resources and fails completely, whether N1 is greater than or equal to T _ N, working environment temperature T1 is greater than or equal to T _ T and retransmission times R1 is greater than T _ R is met or not is judged, if not, no processing is carried out, if yes, the first terminal sends data transmission failure information to the base station, the first terminal sends the data transmission failure information in a 2 x T _ R repeated mode, if the receiving power of the data transmission failure information received by the base station is greater than T _ P, the base station sends a terminal activation signaling, the terminal is activated, and the first terminal sends a first reference signal. Preferably, since the first terminal has transmitted (R1+1) times the N1 data bits to the base station, in order to ensure that the base station can successfully receive the data transmission failure information, the first terminal transmits the data transmission failure information to the base station by 2 × T _ R repetitions. It should be noted that, after data transmission fails, a plurality of terminals transmitting data in a contention mode with the first terminal may transmit data transmission failure information using the same resource as the first terminal, and the data transmission failure information transmitted by different terminals has the same content.
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 first feedback information to the first terminal, where the first feedback information at least includes: the number of data bits N2 that the second terminal can transmit with assistance from the first terminal, the channel information between the second terminal and the base station, and the number of credits C2 that the second terminal expects to transmit with assistance.
A 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 operating environment temperature T3 of the third terminal is greater than or equal to T _ T, and the battery life of the third terminal is greater than or equal to 24 hours, the third terminal sends second feedback information to the first terminal, where the second feedback information at least includes: the number of data bits N3 that the third terminal can assist the first terminal in transmitting, spreading code word information supported by the third terminal, and the number of credits for assisting in transmitting that the third terminal desires to obtain C3.
And after receiving the first feedback information, the first terminal determines whether the number of auxiliary transmission integrals C2 expected by the second terminal can be given, and if so, the first terminal selects X data bits from the N1 data bits and sends the X data bits to the second terminal, wherein X is an integer greater than or equal to 0 and less than or equal to N2.
And after receiving the second feedback information, the first terminal determines whether the number of auxiliary transmission integrals C3 expected by the third terminal can be given, and if so, the first terminal selects Y data bits from the rest (N1-X) bits to send to the third terminal, wherein 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 code word information supported by the third terminal, and sends the third feedback information to the base station, where the third feedback information at least includes: the identification information of the second terminal, the number X of data bits to be transmitted by the second terminal, the identification information of the third terminal, the number Y of data bits to be transmitted by the third terminal, and the spread spectrum codeword information of the third terminal.
And the base station allocates transmission resources to the first terminal, the second terminal and the third terminal based on the received third feedback information, wherein the transmission resources of the first terminal and the second terminal are completely the same, and the transmission resource of the third terminal is all available uplink transmission resources of the base station.
And the first terminal, the second terminal and the third terminal respectively transmit (N1-X-Y) data bits, X data bits and Y data bits according to the resources allocated by the base station.
After the base station successfully receives the X data bits, the base station subtracts the number of auxiliary transmission integrals of the first terminal (C2 × X/N2+ C3 × Y/N3), increases the number of auxiliary transmission integrals of the second terminal (C2 × X/N2), and increases the number of auxiliary transmission integrals of the third terminal (C3 × Y/N3).
Example 2
The method comprises the steps that a first terminal determines N1 data bits to be sent, the first terminal transmits (R1+1) times of the N1 data bits to a base station by using contention resources and fails completely, whether N1 is greater than or equal to T _ N, working environment temperature T1 is greater than or equal to T _ T and retransmission times R1 is greater than T _ R is met or not is judged, if not, no processing is carried out, if yes, the first terminal sends data transmission failure information to the base station, the first terminal sends the data transmission failure information in a 2 x T _ R repeated mode, if the receiving power of the data transmission failure information received by the base station is greater than T _ P, the base station sends a terminal activation signaling, the terminal is activated, and the first terminal sends a first reference signal. Preferably, since the first terminal has transmitted (R1+1) times the N1 data bits to the base station, in order to ensure that the base station can successfully receive the data transmission failure information, the first terminal transmits the data transmission failure information to the base station by 2 × T _ R repetitions. It should be noted that, after data transmission fails, a plurality of terminals transmitting data in a contention mode with the first terminal may transmit data transmission failure information using the same resource as the first terminal, and the data transmission failure information transmitted by different terminals has the same content.
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 first feedback information to the first terminal, where the first feedback information at least includes: the number of data bits N2 that the second terminal can transmit with assistance from the first terminal, the channel information between the second terminal and the base station, and the number of credits C2 that the second terminal expects to transmit with assistance.
A 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 operating environment temperature T3 of the third terminal is greater than or equal to T _ T, and the battery life of the third terminal is greater than or equal to 24 hours, the third terminal sends second feedback information to the first terminal, where the second feedback information at least includes: the number of data bits N3 that the third terminal can assist the first terminal in transmitting, spreading code word information supported by the third terminal, and the number of credits for assisting in transmitting that the third terminal desires to obtain C3.
And after receiving the first feedback information, the first terminal determines whether the number of auxiliary transmission integrals C2 expected by the second terminal can be given, and if so, the first terminal selects X data bits from the N1 data bits and sends the X data bits to the second terminal, wherein X is an integer greater than or equal to 0 and less than or equal to N2.
And after receiving the second feedback information, the first terminal determines whether the number of auxiliary transmission integrals C3 expected by the third terminal can be given, and if so, the first terminal selects Y data bits from the rest (N1-X) bits to send to the third terminal, wherein 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, wherein the first carrier frequency and the second carrier frequency are carrier frequencies above 6GHz, and the second carrier frequency is lower than the first carrier frequency, so that the working carrier frequency with low benefit has relatively low sensitivity to the working environment, and the influence of the working environment temperature of the third terminal on the data transmission quality between the first terminal and the third terminal is reduced as much as possible.
The first terminal generates third feedback information based on channel information between the second terminal and the base station and spreading code word information supported by the third terminal, and sends the third feedback information to the base station, where the third feedback information at least includes: the identification information of the second terminal, the number X of data bits to be transmitted by the second terminal, the identification information of the third terminal, the number Y of data bits to be transmitted by the third terminal, and the spread spectrum codeword information of the third terminal.
And the base station allocates transmission resources to the first terminal, the second terminal and the third terminal based on the received third feedback information, wherein the transmission resources of the first terminal and the second terminal are completely the same, and the transmission resource of the third terminal is all available uplink transmission resources of the base station.
And the first terminal, the second terminal and the third terminal respectively transmit (N1-X-Y) data bits, X data bits and Y data bits according to the resources allocated by the base station.
After the base station successfully receives the X data bits, the base station subtracts the number of auxiliary transmission integrals of the first terminal (C2 × X/N2+ C3 × Y/N3), increases the number of auxiliary transmission integrals of the second terminal (C2 × X/N2), and increases the number of auxiliary transmission integrals of the third terminal (C3 × Y/N3).
Example 3
The method comprises the steps that a first terminal determines N1 data bits to be sent, the first terminal transmits (R1+1) times of the N1 data bits to a base station by using contention resources and fails completely, whether N1 is greater than or equal to T _ N, working environment temperature T1 is greater than or equal to T _ T and retransmission times R1 is greater than T _ R is met or not is judged, if not, no processing is carried out, if yes, the first terminal sends data transmission failure information to the base station, the first terminal sends the data transmission failure information in a 2 x T _ R repeated mode, if the receiving power of the data transmission failure information received by the base station is greater than T _ P, the base station sends a terminal activation signaling, the terminal is activated, and the first terminal sends a first reference signal. Preferably, since the first terminal has transmitted (R1+1) times the N1 data bits to the base station, in order to ensure that the base station can successfully receive the data transmission failure information, the first terminal transmits the data transmission failure information to the base station by 2 × T _ R repetitions. It should be noted that, after data transmission fails, a plurality of terminals transmitting data in a contention mode with the first terminal may transmit data transmission failure information using the same resource as the first terminal, and the data transmission failure information transmitted by different terminals has the same content.
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 first feedback information to the first terminal, where the first feedback information at least includes: the number of data bits N2 that the second terminal can transmit with assistance from the first terminal, the channel information between the second terminal and the base station, and the number of credits C2 that the second terminal expects to transmit with assistance. 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, which has the advantage that the second terminal can help the first terminal to transmit more data to the base station at a relatively good working environment temperature as much as possible, thereby effectively reducing the transmission burden of the first terminal and improving the spectrum efficiency of the whole system.
A 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 operating environment temperature T3 of the third terminal is greater than or equal to T _ T, and the battery life of the third terminal is greater than or equal to 24 hours, the third terminal sends second feedback information to the first terminal, where the second feedback information at least includes: the number of data bits N3 that the third terminal can assist the first terminal in transmitting, spreading code word information supported by the third terminal, and the number of credits for assisting in transmitting that the third terminal desires to obtain C3.
And after receiving the first feedback information, the first terminal determines whether the number of auxiliary transmission integrals C2 expected by the second terminal can be given, and if so, the first terminal selects X data bits from the N1 data bits and sends the X data bits to the second terminal, wherein X is an integer greater than or equal to 0 and less than or equal to N2.
And after receiving the second feedback information, the first terminal determines whether the number of auxiliary transmission integrals C3 expected by the third terminal can be given, and if so, the first terminal selects Y data bits from the rest (N1-X) bits to send to the third terminal, wherein 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 code word information supported by the third terminal, and sends the third feedback information to the base station, where the third feedback information at least includes: the identification information of the second terminal, the number X of data bits to be transmitted by the second terminal, the identification information of the third terminal, the number Y of data bits to be transmitted by the third terminal, and the spread spectrum codeword information of the third terminal.
And the base station allocates transmission resources to the first terminal, the second terminal and the third terminal based on the received third feedback information, wherein the transmission resources of the first terminal and the second terminal are completely the same, and the transmission resource of the third terminal is all available uplink transmission resources of the base station.
And the first terminal, the second terminal and the third terminal respectively transmit (N1-X-Y) data bits, X data bits and Y data bits according to the resources allocated by the base station.
After the base station successfully receives the X data bits, the base station subtracts the number of auxiliary transmission integrals of the first terminal (C2 × X/N2+ C3 × Y/N3), increases the number of auxiliary transmission integrals of the second terminal (C2 × X/N2), and increases the number of auxiliary transmission integrals of the third terminal (C3 × Y/N3).
Example 4
The method comprises the steps that a first terminal determines N1 data bits to be sent, the first terminal transmits (R1+1) times of the N1 data bits to a base station by using contention resources and fails completely, whether N1 is greater than or equal to T _ N, working environment temperature T1 is greater than or equal to T _ T and retransmission times R1 is greater than T _ R is met or not is judged, if not, no processing is carried out, if yes, the first terminal sends data transmission failure information to the base station, the first terminal sends the data transmission failure information in a 2 x T _ R repeated mode, if the receiving power of the data transmission failure information received by the base station is greater than T _ P, the base station sends a terminal activation signaling, the terminal is activated, and the first terminal sends a first reference signal. Preferably, since the first terminal has transmitted (R1+1) times the N1 data bits to the base station, in order to ensure that the base station can successfully receive the data transmission failure information, the first terminal transmits the data transmission failure information to the base station by 2 × T _ R repetitions. It should be noted that, after data transmission fails, a plurality of terminals transmitting data in a contention mode with the first terminal may transmit data transmission failure information using the same resource as the first terminal, and the data transmission failure information transmitted by different terminals has the same content.
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 first feedback information to the first terminal, where the first feedback information at least includes: the number of data bits N2 that the second terminal can transmit with assistance from the first terminal, the channel information between the second terminal and the base station, and the number of credits C2 that the second terminal expects to transmit with assistance.
A 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 operating environment temperature T3 of the third terminal is greater than or equal to T _ T, and the battery life of the third terminal is greater than or equal to 24 hours, the third terminal sends second feedback information to the first terminal, where the second feedback information at least includes: the number of data bits N3 that the third terminal can assist the first terminal in transmitting, spreading code word information supported by the third terminal, and the number of credits for assisting in transmitting that the third terminal desires to obtain C3.
And after receiving the first feedback information, the first terminal determines whether the number of auxiliary transmission integrals C2 expected by the second terminal can be given, and if so, the first terminal selects X data bits from the N1 data bits and sends the X data bits to the second terminal, wherein X is an integer greater than or equal to 0 and less than or equal to N2.
And after receiving the second feedback information, the first terminal determines whether the number of auxiliary transmission integrals C3 expected by the third terminal can be given, and if so, the first terminal selects Y data bits from the rest (N1-X) bits to send to the third terminal, wherein 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 code word information supported by the third terminal, and sends the third feedback information to the base station, where the third feedback information at least includes: the identification information of the second terminal, the number X of data bits to be transmitted by the second terminal, the identification information of the third terminal, the number Y of data bits to be transmitted by the third terminal, and the spread spectrum codeword information of the third terminal.
And the base station allocates transmission resources to the first terminal, the second terminal and the third terminal based on the received third feedback information, wherein the transmission resources of the first terminal and the second terminal are completely the same, and the transmission resource of the third terminal is all available uplink transmission resources of the base station.
And the first terminal, the second terminal and the third terminal respectively transmit (N1-X-Y) data bits, X data bits and Y data bits according to the resources allocated by the base station. Preferably, the length of the spreading code word used by the third terminal is in direct proportion to the size of the operating bandwidth of the base station, for example, when the operating bandwidth of the base station is 5MHz, the length of the spreading code word used by the third terminal is 8, and when the operating bandwidth of the base station is 10MHz, the length of the spreading code word used by the third terminal is 16, and the third terminal transmits Y data bits to the base station using the corresponding spreading code word.
After the base station successfully receives the X data bits, the base station subtracts the number of auxiliary transmission integrals of the first terminal (C2 × X/N2+ C3 × Y/N3), increases the number of auxiliary transmission integrals of the second terminal (C2 × X/N2), and increases the number of auxiliary transmission integrals of the third terminal (C3 × Y/N3).
Example 5
The method comprises the steps that a first terminal determines N1 data bits to be sent, the first terminal transmits (R1+1) times of the N1 data bits to a base station by using contention resources and fails completely, whether N1 is greater than or equal to T _ N, working environment temperature T1 is greater than or equal to T _ T and retransmission times R1 is greater than T _ R is met or not is judged, if not, no processing is carried out, if yes, the first terminal sends data transmission failure information to the base station, the first terminal sends the data transmission failure information in a 2 x T _ R repeated mode, if the receiving power of the data transmission failure information received by the base station is greater than T _ P, the base station sends a terminal activation signaling, the terminal is activated, and the first terminal sends a first reference signal. Preferably, since the first terminal has transmitted (R1+1) times the N1 data bits to the base station, in order to ensure that the base station can successfully receive the data transmission failure information, the first terminal transmits the data transmission failure information to the base station by 2 × T _ R repetitions. It should be noted that, after data transmission fails, a plurality of terminals transmitting data in a contention mode with the first terminal may transmit data transmission failure information using the same resource as the first terminal, and the data transmission failure information transmitted by different terminals has the same content. Preferably, the value of T _ N is 5000, the value of T _ T is 40 degrees celsius, the value of T _ R is 6, and the value of T _ P is-60 dBm, which aims to achieve the purpose that the maximum caching capacity of most low-cost terminals at present is less than or equal to 5000, the required normal operating environment temperature is below 38 degrees celsius, and the data transmission spectrum efficiency of the existing terminal is reduced by more than 30% after the value is exceeded.
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 first feedback information to the first terminal, where the first feedback information at least includes: the number of data bits N2 that the second terminal can transmit with assistance from the first terminal, the channel information between the second terminal and the base station, and the number of credits C2 that the second terminal expects to transmit with assistance.
A 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 operating environment temperature T3 of the third terminal is greater than or equal to T _ T, and the battery life of the third terminal is greater than or equal to 24 hours, the third terminal sends second feedback information to the first terminal, where the second feedback information at least includes: the number of data bits N3 that the third terminal can assist the first terminal in transmitting, spreading code word information supported by the third terminal, and the number of credits for assisting in transmitting that the third terminal desires to obtain C3.
And after receiving the first feedback information, the first terminal determines whether the number of auxiliary transmission integrals C2 expected by the second terminal can be given, and if so, the first terminal selects X data bits from the N1 data bits and sends the X data bits to the second terminal, wherein X is an integer greater than or equal to 0 and less than or equal to N2.
And after receiving the second feedback information, the first terminal determines whether the number of auxiliary transmission integrals C3 expected by the third terminal can be given, and if so, the first terminal selects Y data bits from the rest (N1-X) bits to send to the third terminal, wherein 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 code word information supported by the third terminal, and sends the third feedback information to the base station, where the third feedback information at least includes: the identification information of the second terminal, the number X of data bits to be transmitted by the second terminal, the identification information of the third terminal, the number Y of data bits to be transmitted by the third terminal, and the spread spectrum codeword information of the third terminal.
And the base station allocates transmission resources to the first terminal, the second terminal and the third terminal based on the received third feedback information, wherein the transmission resources of the first terminal and the second terminal are completely the same, and the transmission resource of the third terminal is all available uplink transmission resources of the base station.
And the first terminal, the second terminal and the third terminal respectively transmit (N1-X-Y) data bits, X data bits and Y data bits according to the resources allocated by the base station.
After the base station successfully receives the X data bits, the base station subtracts the number of auxiliary transmission integrals of the first terminal (C2 × X/N2+ C3 × Y/N3), increases the number of auxiliary transmission integrals of the second terminal (C2 × X/N2), and increases the number of auxiliary transmission integrals of the third terminal (C3 × Y/N3).
Example 6
The method comprises the steps that a first terminal determines N1 data bits to be sent, the first terminal transmits (R1+1) times of the N1 data bits to a base station by using contention resources and fails completely, whether N1 is greater than or equal to T _ N, working environment temperature T1 is greater than or equal to T _ T and retransmission times R1 is greater than T _ R is met or not is judged, if not, no processing is carried out, if yes, the first terminal sends data transmission failure information to the base station, the first terminal sends the data transmission failure information in a 2 x T _ R repeated mode, if the receiving power of the data transmission failure information received by the base station is greater than T _ P, the base station sends a terminal activation signaling, the terminal is activated, and the first terminal sends a first reference signal. Preferably, since the first terminal has transmitted (R1+1) times the N1 data bits to the base station, in order to ensure that the base station can successfully receive the data transmission failure information, the first terminal transmits the data transmission failure information to the base station by 2 × T _ R repetitions. It should be noted that, after data transmission fails, a plurality of terminals transmitting data in a contention mode with the first terminal may transmit data transmission failure information using the same resource as the first terminal, and the data transmission failure information transmitted by different terminals has the same content.
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 first feedback information to the first terminal, where the first feedback information at least includes: the number of data bits N2 that the second terminal can transmit with assistance from the first terminal, the channel information between the second terminal and the base station, and the number of credits C2 that the second terminal expects to transmit with assistance.
A 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 operating environment temperature T3 of the third terminal is greater than or equal to T _ T, and the battery life of the third terminal is greater than or equal to 24 hours, the third terminal sends second feedback information to the first terminal, where the second feedback information at least includes: the number of data bits N3 that the third terminal can assist the first terminal in transmitting, spreading code word information supported by the third terminal, and the number of credits for assisting in transmitting that the third terminal desires to obtain C3.
And after receiving the first feedback information, the first terminal determines whether the number of auxiliary transmission integrals C2 expected by the second terminal can be given, and if so, the first terminal selects X data bits from the N1 data bits and sends the X data bits to the second terminal, wherein X is an integer greater than or equal to 0 and less than or equal to N2.
And after receiving the second feedback information, the first terminal determines whether the number of auxiliary transmission integrals C3 expected by the third terminal can be given, and if so, the first terminal selects Y data bits from the rest (N1-X) bits to send to the third terminal, wherein 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 code word information supported by the third terminal, and sends the third feedback information to the base station, where the third feedback information at least includes: the identification information of the second terminal, the number X of data bits to be transmitted by the second terminal, the identification information of the third terminal, the number Y of data bits to be transmitted by the third terminal, and the spread spectrum codeword information of the third terminal.
And the base station allocates transmission resources to the first terminal, the second terminal and the third terminal based on the received third feedback information, wherein the transmission resources of the first terminal and the second terminal are completely the same, and the transmission resource of the third terminal is all available uplink transmission resources of the base station.
And the first terminal, the second terminal and the third terminal respectively transmit (N1-X-Y) data bits, X data bits and Y data bits according to the resources allocated by the base station. Preferably, as shown in fig. 3, (N1-X-Y) data bits and X data bits are uniformly encoded (for example, these bits are encoded by an encoder and output a set of 16-bit cyclic redundancy check bits), Y data bits are independently encoded, which has the advantage that since the amount of data transmitted by the first terminal and the second terminal is usually large and the channel quality with the base station is also good, the reception quality of the content sent by the first terminal and the second terminal on the base station side is similar, so that the data sent by the first terminal and the second terminal to the base station can be uniformly encoded, and the base station determines whether the bit stream formed by (N1-X-Y) data bits and X data bits is successfully received. In addition, the third terminal uses lower power to send Y data bits by using a spread spectrum mode, the experienced channel quality of the Y data bits is completely different from that of the first terminal and the second terminal, the Y data bits are independently coded, and the base station end independently judges whether the Y bits are successfully received, so that the spectrum efficiency of the system is effectively improved, and the feedback overhead of the system is controlled.
After the base station successfully receives the X data bits, the base station subtracts the number of auxiliary transmission integrals of the first terminal (C2 × X/N2+ C3 × Y/N3), increases the number of auxiliary transmission integrals of the second terminal (C2 × X/N2), and increases the number of auxiliary transmission integrals of the third terminal (C3 × Y/N3).
Example 7
The method comprises the steps that a first terminal determines N1 data bits to be sent, the first terminal transmits (R1+1) times of the N1 data bits to a base station by using contention resources and fails completely, whether N1 is greater than or equal to T _ N, working environment temperature T1 is greater than or equal to T _ T and retransmission times R1 is greater than T _ R is met or not is judged, if not, no processing is carried out, if yes, the first terminal sends data transmission failure information to the base station, the first terminal sends the data transmission failure information in a 2 x T _ R repeated mode, if the receiving power of the data transmission failure information received by the base station is greater than T _ P, the base station sends a terminal activation signaling, the terminal is activated, and the first terminal sends a first reference signal. Preferably, since the first terminal has transmitted (R1+1) times the N1 data bits to the base station, in order to ensure that the base station can successfully receive the data transmission failure information, the first terminal transmits the data transmission failure information to the base station by 2 × T _ R repetitions. It should be noted that, after data transmission fails, a plurality of terminals transmitting data in a contention mode with the first terminal may transmit data transmission failure information using the same resource as the first terminal, and the data transmission failure information transmitted by different terminals has the same content.
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 first feedback information to the first terminal, where the first feedback information at least includes: the number of data bits N2 that the second terminal can transmit with assistance from the first terminal, the channel information between the second terminal and the base station, and the number of credits C2 that the second terminal expects to transmit with assistance.
A 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 operating environment temperature T3 of the third terminal is greater than or equal to T _ T, and the battery life of the third terminal is greater than or equal to 24 hours, the third terminal sends second feedback information to the first terminal, where the second feedback information at least includes: the number of data bits N3 that the third terminal can assist the first terminal in transmitting, spreading code word information supported by the third terminal, and the number of credits for assisting in transmitting that the third terminal desires to obtain C3.
And after receiving the first feedback information, the first terminal determines whether the number of auxiliary transmission integrals C2 expected by the second terminal can be given, and if so, the first terminal selects X data bits from the N1 data bits and sends the X data bits to the second terminal, wherein X is an integer greater than or equal to 0 and less than or equal to N2.
And after receiving the second feedback information, the first terminal determines whether the number of auxiliary transmission integrals C3 expected by the third terminal can be given, and if so, the first terminal selects Y data bits from the rest (N1-X) bits to send to the third terminal, wherein 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 code word information supported by the third terminal, and sends the third feedback information to the base station, where the third feedback information at least includes: the identification information of the second terminal, the number X of data bits to be transmitted by the second terminal, the identification information of the third terminal, the number Y of data bits to be transmitted by the third terminal, and the spread spectrum codeword information of the third terminal.
And the base station allocates transmission resources to the first terminal, the second terminal and the third terminal based on the received third feedback information, wherein the transmission resources of the first terminal and the second terminal are completely the same, and the transmission resource of the third terminal is all available uplink transmission resources of the base station.
And the first terminal, the second terminal and the third terminal respectively transmit (N1-X-Y) data bits, X data bits and Y data bits according to the resources allocated by the base station. Preferably, the power used by the Y data bits sent by the third terminal in the unit bandwidth is less than or equal to the thermal noise power measured by the base station in the unit bandwidth, which is because the third terminal uses all uplink bandwidths to send data, if the transmission power of the third terminal is not controlled, the third terminal will bring very large interference to the uplink of the system, and if the system is seriously unable to operate, the transmission power of the third terminal must be controlled.
After the base station successfully receives the X data bits, the base station subtracts the number of auxiliary transmission integrals of the first terminal (C2 × X/N2+ C3 × Y/N3), increases the number of auxiliary transmission integrals of the second terminal (C2 × X/N2), and increases the number of auxiliary transmission integrals of the third terminal (C3 × Y/N3).
Example 8
The method comprises the steps that a first terminal determines N1 data bits to be sent, the first terminal transmits (R1+1) times of the N1 data bits to a base station by using contention resources and fails completely, whether N1 is greater than or equal to T _ N, working environment temperature T1 is greater than or equal to T _ T and retransmission times R1 is greater than T _ R is met or not is judged, if not, no processing is carried out, if yes, the first terminal sends data transmission failure information to the base station, the first terminal sends the data transmission failure information in a 2 x T _ R repeated mode, if the receiving power of the data transmission failure information received by the base station is greater than T _ P, the base station sends a terminal activation signaling, the terminal is activated, and the first terminal sends a first reference signal. Preferably, since the first terminal has transmitted (R1+1) times the N1 data bits to the base station, in order to ensure that the base station can successfully receive the data transmission failure information, the first terminal transmits the data transmission failure information to the base station by 2 × T _ R repetitions. It should be noted that, after data transmission fails, a plurality of terminals transmitting data in a contention mode with the first terminal may transmit data transmission failure information using the same resource as the first terminal, and the data transmission failure information transmitted by different terminals has the same content. Preferably, the first terminal determines the transmission power of the first reference signal based on the number N1 of data bits to be transmitted, wherein the transmission power is proportional to the number N1 of data bits to be transmitted, and this is because when the number of data bits that the first terminal needs to transmit is large, more terminals are expected to assist the first terminal in data transmission, and in order to find the terminals, the transmission power of the first reference signal needs to be increased to make the terminals with larger coverage content receive the first reference signal.
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 first feedback information to the first terminal, where the first feedback information at least includes: the number of data bits N2 that the second terminal can transmit with assistance from the first terminal, the channel information between the second terminal and the base station, and the number of credits C2 that the second terminal expects to transmit with assistance.
A 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 operating environment temperature T3 of the third terminal is greater than or equal to T _ T, and the battery life of the third terminal is greater than or equal to 24 hours, the third terminal sends second feedback information to the first terminal, where the second feedback information at least includes: the number of data bits N3 that the third terminal can assist the first terminal in transmitting, spreading code word information supported by the third terminal, and the number of credits for assisting in transmitting that the third terminal desires to obtain C3.
And after receiving the first feedback information, the first terminal determines whether the number of auxiliary transmission integrals C2 expected by the second terminal can be given, and if so, the first terminal selects X data bits from the N1 data bits and sends the X data bits to the second terminal, wherein X is an integer greater than or equal to 0 and less than or equal to N2.
And after receiving the second feedback information, the first terminal determines whether the number of auxiliary transmission integrals C3 expected by the third terminal can be given, and if so, the first terminal selects Y data bits from the rest (N1-X) bits to send to the third terminal, wherein 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 code word information supported by the third terminal, and sends the third feedback information to the base station, where the third feedback information at least includes: the identification information of the second terminal, the number X of data bits to be transmitted by the second terminal, the identification information of the third terminal, the number Y of data bits to be transmitted by the third terminal, and the spread spectrum codeword information of the third terminal.
And the base station allocates transmission resources to the first terminal, the second terminal and the third terminal based on the received third feedback information, wherein the transmission resources of the first terminal and the second terminal are completely the same, and the transmission resource of the third terminal is all available uplink transmission resources of the base station.
And the first terminal, the second terminal and the third terminal respectively transmit (N1-X-Y) data bits, X data bits and Y data bits according to the resources allocated by the base station.
After the base station successfully receives the X data bits, the base station subtracts the number of auxiliary transmission integrals of the first terminal (C2 × X/N2+ C3 × Y/N3), increases the number of auxiliary transmission integrals of the second terminal (C2 × X/N2), and increases the number of auxiliary transmission integrals of the third terminal (C3 × Y/N3).
Example 9
The method comprises the steps that a first terminal determines N1 data bits to be sent, the first terminal transmits (R1+1) times of the N1 data bits to a base station by using contention resources and fails completely, whether N1 is greater than or equal to T _ N, working environment temperature T1 is greater than or equal to T _ T and retransmission times R1 is greater than T _ R is met or not is judged, if not, no processing is carried out, if yes, the first terminal sends data transmission failure information to the base station, the first terminal sends the data transmission failure information in a 2 x T _ R repeated mode, if the receiving power of the data transmission failure information received by the base station is greater than T _ P, the base station sends a terminal activation signaling, the terminal is activated, and the first terminal sends a first reference signal. Preferably, since the first terminal has transmitted (R1+1) times the N1 data bits to the base station, in order to ensure that the base station can successfully receive the data transmission failure information, the first terminal transmits the data transmission failure information to the base station by 2 × T _ R repetitions. It should be noted that, after data transmission fails, a plurality of terminals transmitting data in a contention mode with the first terminal may transmit data transmission failure information using the same resource as the first terminal, and the data transmission failure information transmitted by different terminals has the same content.
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 first feedback information to the first terminal, where the first feedback information at least includes: the number of data bits N2 that the second terminal can transmit with assistance from the first terminal, the channel information between the second terminal and the base station, and the number of credits C2 that the second terminal expects to transmit with assistance.
A 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 operating environment temperature T3 of the third terminal is greater than or equal to T _ T, and the battery life of the third terminal is greater than or equal to 24 hours, the third terminal sends second feedback information to the first terminal, where the second feedback information at least includes: the number of data bits N3 that the third terminal can assist the first terminal in transmitting, spreading code word information supported by the third terminal, and the number of credits for assisting in transmitting that the third terminal desires to obtain C3.
And after receiving the first feedback information, the first terminal determines whether the number of auxiliary transmission integrals C2 expected by the second terminal can be given, and if so, the first terminal selects X data bits from the N1 data bits and sends the X data bits to the second terminal, wherein X is an integer greater than or equal to 0 and less than or equal to N2.
And after receiving the second feedback information, the first terminal determines whether the number of auxiliary transmission integrals C3 expected by the third terminal can be given, and if so, the first terminal selects Y data bits from the rest (N1-X) bits to send to the third terminal, wherein 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 code word information supported by the third terminal, and sends the third feedback information to the base station, where the third feedback information at least includes: the identification information of the second terminal, the number X of data bits to be transmitted by the second terminal, the identification information of the third terminal, the number Y of data bits to be transmitted by the third terminal, and the spread spectrum codeword information of the third terminal.
And the base station allocates transmission resources to the first terminal, the second terminal and the third terminal based on the received third feedback information, wherein the transmission resources of the first terminal and the second terminal are completely the same, and the transmission resource of the third terminal is all available uplink transmission resources of the base station.
And the first terminal, the second terminal and the third terminal respectively transmit (N1-X-Y) data bits, X data bits and Y data bits according to the resources allocated by the base station. Preferably, the first terminal determines the transmission power for transmitting (N1-X-Y) data bits to the base station based on the number of data bits to be transmitted (N1-X-Y), wherein the transmission power is in a logarithmic relationship with the number of data bits to be transmitted (N1-X-Y), and P is LOG10(V B (N1-X-Y)), wherein P is the transmission power, V is a regulating variable whose value is determined by negotiation between the base station and the first terminal, and B is a transmission resource allocated to the first terminal by the base station, so that the power tends to be more stable and cannot be increased without limitation as the number of data transmitted by the first terminal increases more and the adverse effect on the first terminal, such as the reduction of the service life or the failure of normal operation, caused by an improper increase of the transmission power of the first terminal when the first terminal is in a harsh operating environment in which the first terminal is located, in particular analog devices.
After the base station successfully receives the X data bits, the base station subtracts the number of auxiliary transmission integrals of the first terminal (C2 × X/N2+ C3 × Y/N3), increases the number of auxiliary transmission integrals of the second terminal (C2 × X/N2), and increases the number of auxiliary transmission integrals of the third terminal (C3 × Y/N3).
Example 10
The method comprises the steps that a first terminal determines N1 data bits to be sent, the first terminal transmits (R1+1) times of the N1 data bits to a base station by using contention resources and fails completely, whether N1 is greater than or equal to T _ N, working environment temperature T1 is greater than or equal to T _ T and retransmission times R1 is greater than T _ R is met or not is judged, if not, no processing is carried out, if yes, the first terminal sends data transmission failure information to the base station, the first terminal sends the data transmission failure information in a 2 x T _ R repeated mode, if the receiving power of the data transmission failure information received by the base station is greater than T _ P, the base station sends a terminal activation signaling, the terminal is activated, and the first terminal sends a first reference signal. Preferably, since the first terminal has transmitted (R1+1) times the N1 data bits to the base station, in order to ensure that the base station can successfully receive the data transmission failure information, the first terminal transmits the data transmission failure information to the base station by 2 × T _ R repetitions. It should be noted that, after data transmission fails, a plurality of terminals transmitting data in a contention mode with the first terminal may transmit data transmission failure information using the same resource as the first terminal, and the data transmission failure information transmitted by different terminals has the same content.
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 first feedback information to the first terminal, where the first feedback information at least includes: the number of data bits N2 that the second terminal can transmit with assistance from the first terminal, the channel information between the second terminal and the base station, and the number of credits C2 that the second terminal expects to transmit with assistance.
A 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 operating environment temperature T3 of the third terminal is greater than or equal to T _ T, and the battery life of the third terminal is greater than or equal to 24 hours, the third terminal sends second feedback information to the first terminal, where the second feedback information at least includes: the number of data bits N3 that the third terminal can assist the first terminal in transmitting, spreading code word information supported by the third terminal, and the number of credits for assisting in transmitting that the third terminal desires to obtain C3.
And after receiving the first feedback information, the first terminal determines whether the number of auxiliary transmission integrals C2 expected by the second terminal can be given, and if so, the first terminal selects X data bits from the N1 data bits and sends the X data bits to the second terminal, wherein X is an integer greater than or equal to 0 and less than or equal to N2.
And after receiving the second feedback information, the first terminal determines whether the number of auxiliary transmission integrals C3 expected by the third terminal can be given, and if so, the first terminal selects Y data bits from the rest (N1-X) bits to send to the third terminal, wherein 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 code word information supported by the third terminal, and sends the third feedback information to the base station, where the third feedback information at least includes: the identification information of the second terminal, the number X of data bits to be transmitted by the second terminal, the identification information of the third terminal, the number Y of data bits to be transmitted by the third terminal, and the spread spectrum codeword information of the third terminal.
And the base station allocates transmission resources to the first terminal, the second terminal and the third terminal based on the received third feedback information, wherein the transmission resources of the first terminal and the second terminal are completely the same, and the transmission resource of the third terminal is all available uplink transmission resources of the base station.
And the first terminal, the second terminal and the third terminal respectively transmit (N1-X-Y) data bits, X data bits and Y data bits according to the resources allocated by the base station. Preferably, the second terminal determines the transmission power used when transmitting the X data bits to the first base station based on the number X of data bits, where the transmission power is in direct proportion to the number X of data bits, which has the advantage that the operating environment of the second terminal is relatively good, so that it is possible to increase the transmission power of the second terminal as much as possible to assist the first terminal to transmit more data and improve the transmission quality of the data.
After the base station successfully receives the X data bits, the base station subtracts the number of auxiliary transmission integrals of the first terminal (C2 × X/N2+ C3 × Y/N3), increases the number of auxiliary transmission integrals of the second terminal (C2 × X/N2), and increases the number of auxiliary transmission integrals of the third terminal (C3 × Y/N3).
By adopting the processing method of data competition sending failure in the Internet of things, the problem that a receiver cannot successfully receive any data due to the fact that a plurality of devices share the same resource to send data in a competition mode and the number of the devices sending the data is very large in the existing machine communication can be solved, and the frequency spectrum use efficiency of a network is improved.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims (9)

1. A processing method for data competition sending failure in the Internet of things is characterized by comprising the following steps:
step S1: the first terminal determines N1 data bits to be transmitted, the first terminal transmits (R1+1) times the N1 data bits to the base station by using contention resources and fails all the times, whether N1 is more than or equal to T _ N, the working environment temperature T1 is more than or equal to T _ T and the retransmission times R1 are more than T _ R are met, the T _ N is 5000, the T _ T is 40 ℃, the T _ R is 6, if not satisfied, not processing, if yes, the first terminal sends data transmission failure information to the base station, the first terminal sends the data transmission failure information in a 2 × T _ R repeated mode, if the receiving power of the data transmission failure information received by the base station is more than T _ P, the value of T _ P is-60 dBm, the base station sends a terminal activation signaling to activate the terminal, and the first terminal sends a first reference signal;
step S2: 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 first feedback information to the first terminal, where the first feedback information at least includes: the number of data bits N2 that the second terminal can assist the first terminal in transmitting, channel information between the second terminal and the base station, and the number of auxiliary transmission credits that the second terminal expects to be C2;
step S3: a 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 operating environment temperature T3 of the third terminal is greater than or equal to T _ T, and the battery life of the third terminal is greater than or equal to 24 hours, the third terminal sends second feedback information to the first terminal, where the second feedback information at least includes: the number of data bits N3 that the third terminal can assist the first terminal in transmitting, spreading code word information supported by the third terminal, the number of credits for assisting in transmitting that the third terminal desires to obtain, C3;
step S4: after receiving the first feedback information, the first terminal determines whether the number of auxiliary transmission integrals C2 expected by the second terminal can be given, if so, the first terminal selects X data bits from the N1 data bits and sends the X data bits to the second terminal, wherein 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 number of auxiliary transmission integrals C3 expected by the third terminal can be given, if yes, the first terminal selects Y data bits from the remaining (N1-X) bits to send to the third terminal, wherein 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 code word information supported by the third terminal, and sends the third feedback information to the base station, where the third feedback information at least includes: the identification information of the second terminal, the number X of data bits to be transmitted by the second terminal, the identification information of the third terminal, the number Y of data bits to be transmitted by the third terminal, and the spread spectrum 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, wherein the transmission resources of the first terminal and the second terminal are completely the same, and the transmission resource of the third terminal is all available uplink transmission resources of the base station;
step S8: the first terminal, the second terminal and the third terminal respectively transmit (N1-X-Y) data bits, X data bits and Y data bits according to the resources allocated by the base station;
step S9: after the base station successfully receives the X data bits, the base station subtracts the number of auxiliary transmission integrals of the first terminal (C2 × X/N2+ C3 × Y/N3), increases the number of auxiliary transmission integrals of the second terminal (C2 × X/N2), and increases the number of auxiliary transmission integrals of the third terminal (C3 × Y/N3).
2. The processing method of claim 1, wherein the first terminal and the second terminal transmit the X data bits over a first carrier frequency, and wherein the first terminal and the third terminal transmit the Y data bits over a second carrier frequency.
3. The processing method according to claim 1, wherein the channel quality between the second terminal and the base station is equal to or greater than the channel quality between the first terminal and the base station.
4. The processing method as claimed in claim 1, wherein the length of the spreading code word used by the third terminal is proportional to the size of the operating bandwidth of the base station, and the third terminal transmits the Y data bits to the base station using the corresponding spreading code word.
5. The processing method of claim 1, wherein said (N1-X-Y) data bits and said X data bits are uniformly coded, and wherein said Y data bits are independently coded.
6. The processing method of claim 1, wherein the power used by the third terminal to transmit the Y data bits per unit bandwidth is less than or equal to the thermal noise power measured by the base station per unit bandwidth.
7. The processing method according to claim 1, wherein the first terminal determines the transmit power of the first reference signal based on the number of data bits to be transmitted N1, wherein the transmit power is proportional to the number of data bits to be transmitted N1.
8. The processing method according to claim 1, wherein the first terminal determines the transmit power when transmitting the (N1-X-Y) data bits to the base station based on the number of data bits to be transmitted (N1-X-Y), wherein the transmit power is in a logarithmic relationship with the number of data bits to be transmitted (N1-X-Y), and P ═ LOG10(V ═ B (N-X-Y)), where P is the transmit power, V is a tuning variable whose value is negotiated between the base station and the first terminal, and B is the transmission resource allocated to the first terminal by the base station.
9. The processing method according to claim 1, wherein the second terminal determines the transmit power used for transmitting the X data bits to the base station based on the number X of data bits, wherein the transmit power is in direct proportion to the number X of data bits.
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CN108270528A (en) * 2018-01-16 2018-07-10 深圳职业技术学院 A kind of business transmitting method
CN108306712A (en) * 2018-01-16 2018-07-20 深圳职业技术学院 A kind of business transmitting method based on cooperation

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