CN113630214B - Channel modulation method, device and storage medium - Google Patents
Channel modulation method, device and storage medium Download PDFInfo
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- CN113630214B CN113630214B CN202110949883.0A CN202110949883A CN113630214B CN 113630214 B CN113630214 B CN 113630214B CN 202110949883 A CN202110949883 A CN 202110949883A CN 113630214 B CN113630214 B CN 113630214B
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- 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
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0002—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate
- H04L1/0003—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate by switching between different modulation schemes
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- 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
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0015—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the adaptation strategy
- H04L1/0022—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the adaptation strategy in which mode-switching is influenced by the user
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The embodiment of the application provides a channel modulation method, a device and a storage medium, which are used for acquiring a first signal scheduling period and a first speed of terminal equipment corresponding to the previous data packet transmission, and acquiring a second signal scheduling period and a second speed of the terminal equipment corresponding to the current data packet transmission; determining a step value adjusting coefficient of a modulation order according to the first speed, the second speed, the first signal scheduling period and the second signal scheduling period; and determining a target modulation order according to the stepping value adjustment coefficient, and modulating the channel according to the target modulation order. According to the technical scheme, the target modulation order determined by the step value modulation coefficient is more accurate, so that the channel can be accurately modulated when being modulated according to the target modulation order, and the effective utilization rate of the channel is improved.
Description
Technical Field
The present application relates to the field of communications technologies, and in particular, to a channel modulation method, an apparatus, and a storage medium.
Background
With the continuous development and progress of wireless communication technology, Adaptive Modulation and Coding (AMC) technology is generally used, which can adjust the level of a Modulation and Coding Scheme (MCS) according to the channel condition and determine a Modulation order, so as to modulate a channel according to the Modulation order, thereby ensuring the effective utilization rate of the channel.
Currently, when a modulation order is determined, the sum of the modulation order determined last time and a fixed step value is determined as a current modulation order, and a channel is modulated according to the current modulation order. However, when the current modulation order is determined according to the modulation order determined last time and the fixed step value, the step value corresponding to each modulation order may be different, and therefore, the accuracy of the current modulation order determined by the fixed step value is low, so that when a channel is modulated according to the current modulation order, the effective utilization rate of the channel is low.
Disclosure of Invention
The embodiment of the application provides a channel modulation method, a device and a storage medium, which can improve the accuracy of a determined target modulation order, thereby improving the effective utilization rate of a channel.
In a first aspect, an embodiment of the present application provides a channel modulation method, where the channel modulation method includes:
the method comprises the steps of obtaining a first signal scheduling period and a first speed of terminal equipment corresponding to the previous data packet sending, and obtaining a second signal scheduling period and a second speed of the terminal equipment corresponding to the current data packet sending.
And determining a step value adjusting coefficient of a modulation order according to the first speed, the second speed, the first signal scheduling period and the second signal scheduling period.
And determining a target modulation order according to the stepping value adjustment coefficient, and modulating a channel according to the target modulation order.
In a possible implementation manner, the determining a target modulation order according to the step value adjustment coefficient includes:
and acquiring the stepping value of the modulation order when the data packet is sent last time.
And determining a target stepping value of the modulation order according to the stepping value adjustment coefficient and the stepping value of the modulation order when the data packet is sent last time.
And determining the target modulation order according to the target stepping value.
In a possible implementation manner, the determining the target modulation order according to the target step value includes:
and acquiring a corresponding modulation order when the data packet is sent last time.
And determining the sum of the target stepping value and the modulation order corresponding to the previous data packet transmission as the target modulation order.
In a possible implementation manner, the determining, according to the first speed, the second speed, the first signal scheduling period, and the second signal scheduling period, a step value adjustment coefficient of a modulation order includes:
a first difference between the second speed and the first speed is calculated, a first ratio of the first difference to the first speed is determined, and the first ratio is determined as a first coefficient.
And calculating a second difference value of the second signal scheduling period and the first signal scheduling period, determining a second ratio of the second difference value to the first signal scheduling period, and determining the second ratio as a second coefficient.
And determining the stepping value adjusting coefficient according to the first coefficient and the second coefficient.
In a possible implementation manner, the determining the step value adjustment coefficient according to the first coefficient and the second coefficient includes:
according to the formula:
and determining the step value adjusting coefficient.
Wherein K represents the step value adjustment coefficient, a represents the first coefficient, b represents the second coefficient, and T represents the step value adjustment coefficient 1 Represents the first signal scheduling period, and beta represents a preset coefficient.
In a possible implementation manner, the determining a target step value of a modulation order according to the step value adjustment coefficient and a step value of a modulation order when a data packet was sent last time includes:
according to the formula: theta is equal to theta 1 +(-1) j X (1+ K) × θ', the target step value is determined.
Wherein θ represents the step value adjustment coefficient, θ 1 And the step value represents the modulation order when the data packet is sent last time, theta' represents the preset adjustment step value, and j represents a power coefficient.
In one possible implementation, the method further includes:
and if the first speed is greater than the second speed, determining that the power coefficient is 1.
And if the first speed is less than or equal to the second speed, determining that the power coefficient is 0.
In a second aspect, an embodiment of the present application provides a channel modulation apparatus, including:
the device comprises an acquisition unit, a scheduling unit and a processing unit, wherein the acquisition unit is used for acquiring a first signal scheduling period and a first speed of terminal equipment corresponding to the previous data packet transmission, and acquiring a second signal scheduling period and a second speed of the terminal equipment corresponding to the current data packet transmission.
And the determining unit is used for determining a step value adjusting coefficient of a modulation order according to the first speed, the second speed, the first signal scheduling period and the second signal scheduling period.
And the processing unit is used for determining a target modulation order according to the stepping value adjustment coefficient and modulating a channel according to the target modulation order.
In a possible implementation manner, the processing unit is specifically configured to obtain a step value of a modulation order when a data packet is sent last time; determining a target stepping value of a modulation order according to the stepping value adjustment coefficient and the stepping value of the modulation order when the data packet is sent last time; and determining the target modulation order according to the target stepping value.
In a possible implementation manner, the processing unit is specifically configured to obtain a modulation order corresponding to a previous data packet transmission; and determining the sum of the target stepping value and the modulation order corresponding to the previous data packet transmission as the target modulation order.
In a possible implementation manner, the determining unit is specifically configured to calculate a first difference between the second speed and the first speed, determine a first ratio of the first difference to the first speed, and determine the first ratio as a first coefficient; calculating a second difference value between the second signal scheduling period and the first signal scheduling period, determining a second ratio of the second difference value to the first signal scheduling period, and determining the second ratio as a second coefficient; and determining the stepping value adjusting coefficient according to the first coefficient and the second coefficient.
In a possible implementation manner, the determining unit is specifically configured to:
and determining the step value adjusting coefficient. Wherein K represents the step value adjustment coefficient, a represents the first coefficient, b represents the second coefficient, and T represents the step value adjustment coefficient 1 Represents the first signal scheduling period, and beta represents a preset coefficient.
In a possible implementation manner, the processing unit is specifically configured to: theta is equal to theta 1 +(-1) j X (1+ K) × θ', determining the target step value; wherein θ represents the step value adjustment coefficient, θ 1 And the step value represents the modulation order when the data packet is sent last time, theta' represents the preset adjustment step value, and j represents a power coefficient.
In a possible implementation manner, the processing unit is further configured to determine that the power coefficient is 1 when the first speed is greater than the second speed; determining the power coefficient to be 0 when the first speed is less than or equal to the second speed.
In a third aspect, an embodiment of the present application further provides a channel modulation apparatus, where the channel modulation apparatus may include a memory and a processor; wherein the content of the first and second substances,
the memory is used for storing the computer program.
The processor is configured to read the computer program stored in the memory, and execute the channel modulation method in any one of the possible implementation manners of the first aspect according to the computer program in the memory.
In a fourth aspect, an embodiment of the present application further provides a computer-readable storage medium, where a computer-executable instruction is stored in the computer-readable storage medium, and when a processor executes the computer-executable instruction, the channel modulation method described in any one of the foregoing possible implementation manners of the first aspect is implemented.
In a fifth aspect, an embodiment of the present application further provides a computer program product, which includes a computer program, and when the computer program is executed by a processor, the computer program implements the channel modulation method described in any one of the possible implementation manners of the first aspect.
Therefore, the embodiment of the application provides a channel modulation method, a device and a storage medium, and a first signal scheduling period and a first speed of a terminal device corresponding to a previous data packet transmission are obtained, and a second signal scheduling period and a second speed of the terminal device corresponding to a current data packet transmission are obtained; determining a step value adjusting coefficient of a modulation order according to the first speed, the second speed, the first signal scheduling period and the second signal scheduling period; and determining a target modulation order according to the stepping value adjustment coefficient, and modulating the channel according to the target modulation order. The movement speed and the signal scheduling period of the terminal equipment are related to the change condition of the reaction and tracking channel, so the step value adjustment coefficient of the modulation order is determined according to the movement speed and the signal scheduling period of the terminal equipment, and the determined target modulation order is more accurate through the step value adjustment coefficient. When the channel is modulated according to the target modulation order, the change condition of the channel can be accurately reflected and tracked, so that the effective utilization rate of the channel is improved.
Drawings
Fig. 1 is a schematic diagram illustrating an adaptive modulation and coding technique according to an embodiment of the present disclosure;
fig. 2 is a schematic flowchart of a fixed threshold algorithm provided in an embodiment of the present application;
fig. 3 is a schematic flowchart of a channel modulation method according to an embodiment of the present application;
fig. 4 is a schematic structural diagram of a channel modulation apparatus according to an embodiment of the present disclosure;
fig. 5 is a schematic structural diagram of another channel modulation apparatus according to an embodiment of the present application.
With the foregoing drawings in mind, certain embodiments of the disclosure have been shown and described in more detail below. These drawings and written description are not intended to limit the scope of the disclosed concepts in any way, but rather to illustrate the concepts of the disclosure to those skilled in the art by reference to specific embodiments.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. The following description refers to the accompanying drawings in which the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.
In the embodiments of the present application, "at least one" means one or more, "a plurality" means two or more. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone, wherein A and B can be singular or plural. In the description of the text of the present application, the character "/" generally indicates that the former and latter associated objects are in an "or" relationship.
The technical scheme provided by the embodiment of the application can be applied to a scene of channel modulation. In the current wireless communication system, the modulation and coding strategy is usually modulated into an index table of different transmission rates, and in order to better adapt to the change of a channel, the adaptive modulation and coding technology usually depends on channel quality indication information fed back by means in the modulation and coding strategy level selection. Therefore, more data packets are transmitted under the condition of good channel state, and the dynamic adjustment is carried out under the condition of poor channel quality, so that the transmission rate is reduced to adapt to the change of the channel state.
Fig. 1 shows a basic principle of an adaptive modulation and coding technique, and fig. 1 is a schematic diagram of a principle of an adaptive modulation and coding technique provided in an embodiment of the present application. According to fig. 1, data is transmitted in a packet form, channel coding and modulation are performed on the data to obtain code-modulated data, the code-modulated data is transmitted to a receiving end through a channel, and the receiving end performs demodulation and decoding processing on the code-modulated data, so that the data is output in a packet form.
Further, when a channel fading occurs, a receiving end of data can determine a modulation level adopted by next scheduling according to a received signal including the channel fading through a fixed threshold algorithm, which may be specifically shown in fig. 2, where fig. 2 is a schematic flow diagram of the fixed threshold algorithm provided in the embodiment of the present application. As shown in fig. 2, a vector snr corresponding to each channel quality indicator can be obtained through a training sequence and offline simulation, and a receiving end performs channel estimation according to channel fading and noise, and maps the vector snr to a scalar effective snr. And determining the value of the mapping channel quality indication by searching a preset threshold value table, feeding back the value to a transmitting end in the next channel quality indication feedback period, and confirming the modulation grade adopted by the next scheduling by the transmitting end. The sending end selects a modulation and coding strategy according to the channel state information fed back from the receiving end, and selects a corresponding transmission rate, a modulation grade and a modulation order from a fixed modulation and coding mode set, so that data packets are coded and modulated according to the modulation grade, and the channel can be fully utilized and the throughput of data transmission is improved when data transmission is carried out under the condition of channel fading. Therefore, determining the modulation order is particularly important for the output of data in the channel.
In the prior art, the sum of the modulation order determined in the last data transmission and a fixed step value is determined as the modulation order of the current data transmission, and the channel is modulated according to the current modulation order, so that the data can be transmitted smoothly.
However, when the modulation order of the current data transmission is determined according to the modulation order determined in the last data transmission and the fixed step value, since the step values between the modulation orders of the previous and subsequent data transmissions may be different, the accuracy of the determined modulation order is low when the modulation order of the current data transmission is determined by the fixed step value, so that when the channel is modulated according to the current modulation order, the channel cannot be accurately modulated, and the effective utilization rate of the channel is reduced.
In order to solve the problem that the effective utilization rate of a channel is low due to the fact that the accuracy of the modulation order of the current data transmission determined by the fixed stepping value is low, the adjustment coefficient of the stepping value of the modulation order can be determined according to the signal scheduling period related to the speed reflecting and tracking the change condition of the channel and the moving speed of the terminal equipment, and the modulation order of the current data transmission is determined according to the adjustment coefficient of the stepping value, so that the accuracy of the determined modulation order is higher, channel modulation can be accurately carried out, and the effective utilization rate of the channel is improved.
Hereinafter, the channel modulation method provided in the present application will be described in detail by specific embodiments. It is to be understood that the following detailed description may be combined with other embodiments, and that the same or similar concepts or processes may not be repeated in some embodiments.
Fig. 3 is a flowchart illustrating a channel modulation method according to an embodiment of the present application. The channel modulation method may be performed by software and/or hardware means, for example, the hardware means may be a channel modulation means, and the channel modulation means may be a terminal or a processing chip in the terminal. For example, referring to fig. 3, the channel modulation method may include:
s301, acquiring a first signal scheduling period and a first speed of the terminal device corresponding to the previous data packet transmission, and acquiring a second signal scheduling period and a second speed of the terminal device corresponding to the current data packet transmission.
For example, when a first signal scheduling period corresponding to a previous data packet transmission is acquired and a second signal scheduling period corresponding to a current data packet transmission is acquired, the first signal scheduling period stored in the previous data packet transmission may be directly used, or the first signal scheduling period and the second signal scheduling period may be acquired according to a preset signal scheduling period, which may be specifically set according to an actual situation, and this is not limited in this embodiment of the present application. The first signal scheduling period comprises a first symbol number contained in the first signal scheduling period, and the second signal scheduling period comprises a second symbol number contained in the second signal scheduling period.
It is to be understood that the first signal scheduling period and the second signal scheduling period may be the same or different, and this is not limited in this embodiment of the present application.
The first speed of the terminal device and the second speed of the terminal device are only the moving speed of the terminal device and can be obtained through interaction between the base station and the terminal device. For example, the terminal device may send data to the base station in real time or at regular time, and receive data fed back by the base station, so that the terminal device can perform communication service normally. The data sent by the terminal device to the base station may include data such as a real-time location of the terminal device, a requested network service, and the like, so that the base station can determine a moving speed of the terminal device according to the real-time location of the terminal device. In this embodiment of the present application, the moving speed of the terminal device may be an average moving speed of the terminal device, or may also be an instantaneous moving speed of the terminal device, and specifically, this embodiment of the present application is not limited.
S302, determining a step value adjusting coefficient of a modulation order according to the first speed, the second speed, the first signal scheduling period and the second signal scheduling period.
When determining a step value adjustment coefficient of a modulation order according to a first speed, a second speed, a first signal scheduling period and a second signal scheduling period, a first difference between the second speed and the first speed may be calculated, a first ratio of the first difference to the first speed is determined, and the first ratio is determined as a first coefficient; calculating a second difference value between the second signal scheduling period and the first signal scheduling period, determining a second ratio of the second difference value to the first signal scheduling period, and determining the second ratio as a second coefficient; and determining a stepping value adjusting coefficient according to the first coefficient and the second coefficient.
For example, when the first signal scheduling period or the second signal scheduling period is small, Hybrid Automatic Repeat reQuest (HARQ) feedback is fast, that is, the change condition of the channel can be fast reflected and tracked; when the first signal scheduling period or the second signal scheduling period is larger, Hybrid Automatic Repeat reQuest (HARQ) feedback is slower, and at this time, the speed of reflecting and tracking the change condition of the channel is slower. Therefore, the first signal scheduling period and the second signal scheduling period are both inversely proportional to the step value adjustment coefficient.
For example, when the moving speed of the terminal device is high, the change situation of the channel can be quickly reflected and tracked; when the moving speed of the terminal equipment is low, the change condition of the reaction and tracking channel is slow. Therefore, the first speed and the second speed of the terminal device are both proportional to the step value adjustment coefficient.
In the embodiment of the application, a first coefficient is determined according to a first speed and a second speed, a second coefficient is determined according to a first signal scheduling period and a second signal scheduling period, and a step value adjustment coefficient is determined according to the first coefficient and the second coefficient.
When the step value adjustment coefficient is determined based on the first coefficient and the second coefficient, the step value adjustment coefficient may be determined by the following formula (1).
In formula (1), K denotes a step value adjustment coefficient, a denotes a first coefficient, b denotes a second coefficient, and T denotes 1 To representAnd a first signal scheduling period, wherein beta represents a preset coefficient.
For example, the value range of the preset coefficient β may be that β is greater than or equal to 0 and less than or equal to 1, specifically, the value range may be set according to a specific situation, and this is not specifically limited in this embodiment of the present application.
For example, in order to further improve the accuracy of the determined step adjustment coefficient, the value range of the step adjustment coefficient may be-1 ≦ K ≦ 1. That is, if the value of K is calculated to be greater than 1, the value of K is determined to be 1; and if the calculated value of K is less than-1, determining the value of K as-1. The embodiments of the present application are described by way of example only, and do not represent that the embodiments of the present application are limited thereto.
In the embodiment of the application, the step value adjustment coefficient is determined according to the first coefficient and the second coefficient and by combining the preset coefficient and the first signal scheduling period, so that the determined step value adjustment coefficient is more accurate, and the determined target modulation order is more accurate when the target modulation order is determined according to the step value coefficient.
And S203, determining a target modulation order according to the stepping value adjustment coefficient, and modulating the channel according to the target modulation order.
When the target modulation order is determined according to the step value adjustment coefficient, the step value of the modulation order when the data packet is sent last time can be obtained; determining a target stepping value of a modulation order according to the stepping value adjustment coefficient and the stepping value of the modulation order when the data packet is sent last time; and determining a target modulation order according to the target stepping value.
For example, the step value of the modulation order when the data packet was sent last may be stored when the data packet is transmitted, and therefore, the step value of the modulation order when the data packet was sent last may be obtained from the stored step values.
In the embodiment of the application, the target stepping value is determined according to the stepping value of the modulation order and the stepping value adjustment coefficient when the data packet is sent last time, so that the determined target stepping value is more accurate, and the accuracy of the determined target modulation order is improved.
For example, when the target step value of the modulation order is determined according to the step value adjustment coefficient and the step value of the modulation order at the previous time of transmitting the packet, the target step value may be determined according to the following formula (2).
θ＝θ 1 +(-1) j ×(1+K)×θ′ (2)
Where θ represents a step value adjustment coefficient, θ 1 And the step value of the modulation order when the data packet is sent last time is represented, theta' represents a preset adjustment step value, and j represents a power coefficient.
For example, the preset step value adjustment coefficient may be set according to an actual situation and an experience value of a technician, which is not limited in this embodiment of the present application.
In the embodiment of the present application, the accuracy of the determined target step value can be further improved by the power coefficient and the preset adjustment step value.
In formula (2), for example, if the first speed is greater than the second speed, the power coefficient is determined to be 1; if the first speed is less than or equal to the second speed, the power coefficient is determined to be 0.
In the embodiment of the application, the value of the power coefficient is determined according to the magnitude of the first speed and the second speed, so that the accuracy of the determined target stepping value can be ensured.
When the target modulation order is determined according to the target stepping value, the corresponding modulation order when the data packet is sent last time can be obtained; and determining the sum of the target stepping value and the corresponding modulation order when the data packet is sent last time as the target modulation order. The target modulation order can be accurately determined, so that when the channel is modulated according to the target modulation order, the accuracy of channel modulation can be improved, and the effective utilization rate of the channel is improved.
Therefore, the channel modulation method provided by the embodiment of the application obtains a first signal scheduling period and a first speed of the terminal device corresponding to the previous data packet transmission, and obtains a second signal scheduling period and a second speed of the terminal device corresponding to the current data packet transmission; determining a step value adjusting coefficient of a modulation order according to the first speed, the second speed, the first signal scheduling period and the second signal scheduling period; and determining a target modulation order according to the stepping value adjustment coefficient, and modulating the channel according to the target modulation order. According to the technical scheme, the step value adjustment coefficient of the modulation order can be determined according to the movement speed and the signal scheduling period of the terminal equipment related to the change condition of the reaction and tracking channel, so that the target modulation order is determined, and the determined target modulation coefficient is more accurate. When the channel is modulated according to the target modulation order, the change condition of the channel can be accurately reflected and tracked, so that the effective utilization rate of the channel is improved.
In order to facilitate understanding of the channel modulation method provided in the embodiments of the present application, the following describes the technical solutions provided in the present application in detail through specific embodiments.
In the embodiment of the present application, the pass theta n Modulation order adjustment step value representing nth repeated transmission of each packet data packet, theta represents modulation order fixed step value, K represents step value adjustment coefficient, MSC n Indicating the accumulated stepped modulation order, MSC, at the nth packet transmission n-1 Indicates the modulation order, Speed, accumulated after stepping when the (n-1) th packet data packet is transmitted i Representing the average Speed of motion, Speed, of the user during the ith signal scheduling period i-1 Represents the average moving speed of the user in the i-1 signal scheduling period, N _ TTI i Indicates the number of symbols contained in the ith signal scheduling period, N _ TTI i-1 Indicating the number of symbols contained in the i-1 th signal scheduling period. In the embodiment of the application, n is a positive integer greater than 1, and i is a positive integer greater than 1.
According to the above embodiment, the step value adjustment coefficient may be determined according to the following formula (3).
Wherein, the value range of β is 0 ≤ and 1 ≤, and the value of β can be adjusted according to actual conditions, which is not limited in this embodiment of the present application. In addition, the value range of the stepping value adjustment coefficient is that K is more than or equal to-1 and less than or equal to 1, namely, when the calculated value of K is more than 1, the value of K is automatically rounded downwards, and the value of K is set as 1; when the calculated value of K is less than-1, the integer is automatically rounded upwards, and the value of K is set as-1.
Further, a target step value is determined using the following formula (4) according to the step value adjustment coefficient.
θ n ＝θ n-1 +(-1) j ×(1+k)×θ (4)
Wherein when Speed is used i ＜Speed i-1 When j is 1, when Speed i ≥Speed i-1 When j is 0.
According to the above embodiment, the target modulation order may be determined according to the following formula (5).
Wherein the content of the first and second substances,
the value representing the calculated target modulation factor is rounded down.
In summary, the technical scheme provided in the embodiment of the present application can accurately determine the target modulation order, so that when a channel is modulated according to the target modulation order, the accuracy of channel modulation is improved, and the effective utilization rate of the channel is improved.
Fig. 4 is a schematic structural diagram of a channel modulation apparatus 40 according to an embodiment of the present application, for example, please refer to fig. 4, where the channel modulation apparatus 40 may include:
the obtaining unit 401 is configured to obtain a first signal scheduling period and a first speed of the terminal device corresponding to a previous data packet transmission, and obtain a second signal scheduling period and a second speed of the terminal device corresponding to a current data packet transmission.
A determining unit 402, configured to determine a step value adjustment coefficient of a modulation order according to the first speed, the second speed, the first signal scheduling period, and the second signal scheduling period.
And a processing unit 403, configured to determine a target modulation order according to the step value adjustment coefficient, and modulate a channel according to the target modulation order.
Optionally, the processing unit 403 is specifically configured to obtain a step value of a modulation order when a data packet is sent last time; determining a target stepping value of a modulation order according to the stepping value adjustment coefficient and the stepping value of the modulation order when the data packet is sent last time; and determining a target modulation order according to the target stepping value.
Optionally, the processing unit 403 is specifically configured to obtain a modulation order corresponding to a previous data packet transmission; and determining the sum of the target stepping value and the corresponding modulation order when the data packet is sent last time as the target modulation order.
Optionally, the determining unit 402 is specifically configured to calculate a first difference between the second speed and the first speed, determine a first ratio of the first difference to the first speed, and determine the first ratio as a first coefficient; calculating a second difference value between the second signal scheduling period and the first signal scheduling period, determining a second ratio of the second difference value to the first signal scheduling period, and determining the second ratio as a second coefficient; and determining a stepping value adjusting coefficient according to the first coefficient and the second coefficient.
Optionally, the determining unit 402 is specifically configured to:
a step value adjustment coefficient is determined. Wherein K represents a step value adjustment coefficient, a represents a first coefficient, b represents a second coefficient, T 1 Denotes a first signal scheduling period, and β denotes a preset coefficient.
Optionally, the processing unit 403 is specifically configured to: theta is equal to theta 1 +(-1) j X (1+ K) × θ', determining a target step value; where θ represents a step value adjustment coefficient, θ 1 Indicating the step value of the modulation order at the previous transmission of a data packet, theta' indicating a preset adjustmentThe step value, j, represents a power coefficient.
Optionally, the processing unit 403 is further configured to determine that the power coefficient is 1 when the first speed is greater than the second speed; when the first speed is less than or equal to the second speed, the power coefficient is determined to be 0.
The channel modulation apparatus provided in the embodiment of the present application may implement the technical solution of the channel modulation method in any of the above embodiments, and the implementation principle and the beneficial effect of the channel modulation apparatus are similar to those of the channel modulation method, which can be referred to as the implementation principle and the beneficial effect of the channel modulation method, and are not described herein again.
Fig. 5 is a schematic structural diagram of another channel modulation apparatus 50 according to an embodiment of the present application, for example, please refer to fig. 5, where the channel modulation apparatus 50 may include a processor 501 and a memory 502;
wherein the content of the first and second substances,
the memory 502 is used for storing computer programs.
The processor 501 is configured to read the computer program stored in the memory 502, and execute the technical solution of the channel modulation method in any of the embodiments according to the computer program in the memory 502.
Alternatively, the memory 502 may be separate or integrated with the processor 501. When the memory 502 is a device independent from the processor 501, the channel modulation apparatus 50 may further include: a bus for connecting the memory 502 and the processor 501.
Optionally, this embodiment further includes: a communication interface that may be connected to the processor 501 through a bus. The processor 501 may control the communication interface to implement the receiving and transmitting functions of the channel modulation device 50 described above.
The channel modulation apparatus 50 shown in the embodiment of the present application can implement the technical solution of the channel modulation method in any of the above embodiments, and the implementation principle and the beneficial effect thereof are similar to those of the channel modulation method, and reference may be made to the implementation principle and the beneficial effect of the channel modulation method, which is not described herein again.
An embodiment of the present application further provides a computer-readable storage medium, where a computer execution instruction is stored in the computer-readable storage medium, and when a processor executes the computer execution instruction, the technical solution of the channel modulation method in any of the above embodiments is implemented, and implementation principles and beneficial effects of the technical solution are similar to those of the channel modulation method, and reference may be made to the implementation principles and beneficial effects of the channel modulation method, which are not described herein again.
The embodiment of the present application further provides a computer program product, which includes a computer program, and when the computer program is executed by a processor, the technical solution of the channel modulation method in any of the above embodiments is implemented, and the implementation principle and the beneficial effect of the computer program are similar to those of the channel modulation method, which can be referred to as the implementation principle and the beneficial effect of the channel modulation method, and are not described herein again.
In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the illustrated or discussed coupling or direct coupling or communication connection between each other may be through some interfaces, indirect coupling or communication connection between devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts shown as units may or may not be physical units, may be located in one position, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment. In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.
The integrated module implemented in the form of a software functional module may be stored in a computer-readable storage medium. The software functional module is stored in a storage medium and includes several instructions to enable a computer device (which may be a personal computer, a server, or a network device) or a processor (processor) to execute some steps of the methods according to the embodiments of the present application.
It should be understood that the Processor may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of a method disclosed in connection with the present invention may be embodied directly in a hardware processor, or in a combination of the hardware and software modules within the processor.
The memory may comprise a high-speed RAM memory, and may further comprise a non-volatile storage NVM, such as at least one disk memory, and may also be a usb disk, a removable hard disk, a read-only memory, a magnetic or optical disk, etc.
The bus may be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, an Extended ISA (EISA) bus, or the like. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, the buses in the figures of the present application are not limited to only one bus or one type of bus.
The computer-readable storage medium may be implemented by any type or combination of volatile or non-volatile memory devices, such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disks. A storage media may be any available media that can be accessed by a general purpose or special purpose computer.
Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.
Claims (9)
1. A method for channel modulation, comprising:
acquiring a first signal scheduling period and a first speed of terminal equipment corresponding to the previous data packet transmission, and a second signal scheduling period and a second speed of the terminal equipment corresponding to the current data packet transmission, wherein the first speed and the second speed are both the moving speed of the terminal equipment;
determining a step value adjustment coefficient of a modulation order according to the first speed, the second speed, the first signal scheduling period and the second signal scheduling period;
the determining a step value adjustment coefficient of a modulation order according to the first speed, the second speed, the first signal scheduling period, and the second signal scheduling period includes:
calculating a first difference between the second speed and the first speed, determining a first ratio of the first difference to the first speed, and determining the first ratio as a first coefficient;
calculating a second difference value between the second signal scheduling period and the first signal scheduling period, determining a second ratio of the second difference value to the first signal scheduling period, and determining the second ratio as a second coefficient;
determining the step value adjusting coefficient according to the first coefficient and the second coefficient;
and determining a target modulation order according to the stepping value adjustment coefficient, and modulating a channel according to the target modulation order.
2. The method of claim 1, wherein determining a target modulation order based on the step value adjustment factor comprises:
acquiring a stepping value of a modulation order when a data packet is transmitted last time;
determining a target stepping value of a modulation order according to the stepping value adjustment coefficient and the stepping value of the modulation order when the data packet is sent last time;
and determining the target modulation order according to the target stepping value.
3. The method of claim 2, wherein the determining the target modulation order according to the target step value comprises:
acquiring a corresponding modulation order when a data packet is sent at the previous time;
and determining the sum of the target stepping value and the modulation order corresponding to the previous data packet transmission as the target modulation order.
4. The method according to any one of claims 1-3, wherein said determining the step-value adjustment coefficient based on the first coefficient and the second coefficient comprises:
according to the formula:
determining the stepping value adjustment coefficient;
wherein K represents the step value adjustment coefficient, a represents the first coefficient, b represents the second coefficient, and T represents the step value adjustment coefficient 1 Represents the firstAnd a signal scheduling period, wherein beta represents a preset coefficient.
5. The method of claim 2, wherein determining the target step value of the modulation order according to the step value adjustment coefficient and the step value of the modulation order at the previous time of transmitting the data packet comprises:
according to the formula:
determining the target step value;
wherein θ represents the step value adjustment coefficient, θ 1 And the step value of the modulation order when the data packet is sent last time is represented, theta' represents a preset adjustment step value, and j represents a power coefficient.
6. The method of claim 5, further comprising:
if the first speed is greater than the second speed, determining that the power coefficient is 1;
and if the first speed is less than or equal to the second speed, determining that the power coefficient is 0.
7. A channel modulation apparatus, comprising:
the device comprises an acquisition unit, a processing unit and a processing unit, wherein the acquisition unit is used for acquiring a first signal scheduling period and a first speed of terminal equipment corresponding to the previous data packet transmission, and acquiring a second signal scheduling period and a second speed of the terminal equipment corresponding to the current data packet transmission, and the first speed and the second speed are both the moving speed of the terminal equipment;
a determining unit, configured to determine a step value adjustment coefficient of a modulation order according to the first speed, the second speed, the first signal scheduling period, and the second signal scheduling period;
the determining unit is specifically configured to calculate a first difference between the second speed and the first speed, determine a first ratio of the first difference to the first speed, and determine the first ratio as a first coefficient; calculating a second difference value between the second signal scheduling period and the first signal scheduling period, determining a second ratio of the second difference value to the first signal scheduling period, and determining the second ratio as a second coefficient; determining a stepping value adjusting coefficient according to the first coefficient and the second coefficient;
and the processing unit is used for determining a target modulation order according to the stepping value adjustment coefficient and modulating a channel according to the target modulation order.
8. A channel modulation apparatus comprising a memory and a processor; wherein the content of the first and second substances,
the memory for storing a computer program;
the processor is configured to read the computer program stored in the memory and execute a channel modulation method according to any one of claims 1 to 6 according to the computer program in the memory.
9. A computer-readable storage medium having computer-executable instructions stored thereon, which when executed by a processor, implement a channel modulation method as claimed in any one of claims 1-6.
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| CN108900278A (en) * | 2018-06-08 | 2018-11-27 | Oppo广东移动通信有限公司 | A kind of method of adjustment of modulation demodulation system, terminal and computer storage medium |
| CN112995080A (en) * | 2021-04-21 | 2021-06-18 | 华南理工大学 | Self-adaptive wireless energy-carrying communication system based on bias ASK modulation |
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| CN108900278A (en) * | 2018-06-08 | 2018-11-27 | Oppo广东移动通信有限公司 | A kind of method of adjustment of modulation demodulation system, terminal and computer storage medium |
| CN112995080A (en) * | 2021-04-21 | 2021-06-18 | 华南理工大学 | Self-adaptive wireless energy-carrying communication system based on bias ASK modulation |
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