Power control method and related base station

Abstract

The present invention provides a power control method and a related base station. The power control method includes the following steps: receiving a plurality of uplink data of a user equipment, and determining a channel condition corresponding to the plurality of uplink data. Determining a plurality of influence differences between the channel conditions corresponding to the plurality of uplink data and an expected condition respectively. Determining a transmission power instruction according to a statistic of the plurality of influence differences. Transmitting the transmission power instruction to set an uplink transmission power for the user equipment to transmit subsequent data. Each channel condition includes an influence received by the corresponding uplink data through the channel. Therefore, the reliability and stability of the uplink transmission power adjustment can be improved.

Description

Technical Field

[0001] The present invention relates to a wireless communication technology, and more particularly to a power control method for wireless communication and a related base station. Background Art

[0002] In a mobile communication system (e.g., a fourth generation (4G), long-term evolution (LTE), fifth generation - new radio (5G-NR) communication system, etc.), the existing closed-loop power control measures the power of the uplink data transmitted by a user equipment (UE) through a base station (e.g., a next-generation node B (gNB)) to determine the adjustment amount of the uplink power, and accordingly issues the adjustment amount of the uplink power to the user equipment. However, if the uplink data measured at a certain time is incorrect or the channel is instantaneously severely interfered (e.g., a rapidly changing wireless channel or the user equipment does not transmit uplink data at an appropriate transmission time point), it will cause the base station to misjudge the adjustment amount. If the adjustment amount of the uplink power does not conform to the actual channel conditions, it will also cause the uplink power used by the user equipment to be too large or too small, thereby affecting the stability of the uplink. Summary of the Invention

[0003] The present invention is directed to a power control method and a base station that can determine an adjustment amount according to the statistics corresponding to multiple uplink data to cope with a rapidly changing channel.

[0004] According to an embodiment of the present invention, the power control method includes (but is not limited to) the following steps: determining the channel conditions corresponding to multiple uplink data; determining multiple influence differences between the channel conditions corresponding to the multiple uplink data and an expected condition; determining a transmission power instruction according to the statistics of the multiple influence differences; and transmitting the transmission power instruction. Each channel condition includes the influence received by the channel through which the corresponding uplink data passes. The transmission power instruction is used to control the power for transmitting subsequent data.

[0005] According to an embodiment of the present invention, the base station includes (but is not limited to) a transceiver and a processor. The transceiver is used to transmit or receive signals. The processor is coupled to the transceiver. The processor is configured to: determine the channel conditions corresponding to multiple uplink data; determine multiple influence differences between the channel conditions corresponding to the multiple uplink data and an expected condition; determine a transmission power instruction according to the statistics of the multiple influence differences; and transmit the transmission power instruction through the transceiver. Each channel condition includes the influence received by the channel through which the corresponding uplink data passes. The transmission power instruction is used to control the power for transmitting subsequent data.

[0006] Based on the above, for the power control method and base station according to the embodiments of the present invention, the influence difference between the channel situation corresponding to multiple uplink data and the expected situation is statistically analyzed, and a transmission power instruction related to the power adjustment amount is determined according to the statistical result of the influence difference. Therefore, the power adjustment amount can conform to the actual situation, thereby improving the stability of the uplink. Description of the Drawings

[0007] The drawings form a part of this specification. The drawings are used to illustrate the embodiments of the present invention and, together with the description, are used to explain the principles of the present invention.

[0008] Figure 1 is a schematic diagram of a communication system according to an embodiment of the present invention;

[0009] Figure 2 is a block diagram of components of a base station according to an embodiment of the present invention;

[0010] Figure 3 is a flowchart of a power control method according to an embodiment of the present invention;

[0011] Figure 4 is a flowchart of determining a transmission power instruction according to an embodiment of the present invention.

[0012] Description of Reference Numerals in the Drawings

[0013] 1: Communication system;

[0014] 10: Base station;

[0015] 20: User equipment;

[0016] 11: Antenna;

[0017] 12: Transceiver;

[0018] 13: Analog-to-digital / digital-to-analog converter

[0019] 14: Memory;

[0020] 15: Processor;

[0021] S310~S350, S410~S433: Steps. Detailed Embodiments

[0022] Embodiments of the present invention will now be described in conjunction with the drawings. Whenever possible, the same component symbols are used in the drawings and the description to represent the same or similar parts.

[0023] Figure 1 is a schematic diagram of a communication system 1 according to an embodiment of the present invention. Please refer to Figure 1, the communication system 1 includes but is not limited to the base station 10, and one or more user equipments 20.

[0024] The communication system 1 is, for example, a global system of mobile communication (GSM) system, a code division multiple access (CDMA) system, a wideband code division multiple access (WCDMA) system, a general packet radio service (GPRS), a long term evolution (LTE) system, an LTE frequency division duplex (FDD) system, an LTE time division duplex (TDD) system, an advanced long term evolution (LTE-A) system, a new radio (NR) system, an evolved system of the NR system, an LTE-based access to unlicensed spectrum (LTE-U) system, an NR-based access to unlicensed spectrum (NR-U) system, a universal mobile telecommunication system (UMTS), a worldwide interoperability for microwave access (WiMAX) communication system, a wireless local area networks (WLAN), a wireless fidelity (WiFi), a next-generation communication system, an indoor millimeter-wave wireless communication system, or other communication systems.

[0025] Figure 2 It is a component block diagram of the base station 10 according to an embodiment of the present invention. Please refer to Figure 2, the base station 10 can be a device such as an Evolved Node B (eNB), a Home Evolved Node B (HeNB), a Next Generation Node B (gNB), a Base Transceiver System (BTS), a relay, a repeater, or a WiFi 7 wireless access point.

[0026] The base station 10 includes but is not limited to one or more antennas 11, a transceiver 12, an Analog to Digital / Digital to Analog converter 13, a memory 14, and a processor 15.

[0027] The transceiver 12 is used to wirelessly receive uplink signals and transmit downlink signals through the antenna 11. The transceiver 12 can also perform analog signal processing operations such as low noise amplification, impedance matching, mixing, up-conversion or down-conversion, filtering, amplification, and the like.

[0028] The Analog to Digital / Digital to Analog converter 13 is coupled to the transceiver 12 and is configured to convert from an analog signal format to a digital signal format during uplink signal processing and from a digital signal format to an analog signal format during downlink signal processing.

[0029] The memory 14 can be a suitable fixed or removable Random Access Memory (RAM), Read-Only Memory (ROM), Flash Memory, or similar components or a combination of the above components. The memory 14 stores program code, device configurations, codebooks, buffered or permanent data, and stores various other communication protocol-related software modules such as the Radio Resource Control (RRC) layer, the Packet Data Convergence Protocol (PDCP) layer, the Radio Link Control (RLC) layer, the Media Access Control (MAC) layer, and the Physical (PHY) layer.

[0030] The processor 15 is coupled to the analog-to-digital / digital-to-analog converter 13 and the memory 14. The processor 15 is configured to process digital signals and execute a program according to an exemplary embodiment of the present invention, and can access or load the data and software modules stored in the memory 14. The functions of the processor 15 can be implemented by using one or more components such as a central processing unit (CPU), a microprocessor, a microcontroller, a digital signal processing (DSP) chip, a field programmable gate array (FPGA), etc. The functions of the processor 15 can also be implemented by an independent electronic device or an integrated circuit (IC), and some operations of the processor 15 can also be implemented by software.

[0031] The user equipment 20 (User Equipment, UE, or also referred to as a mobile terminal, terminal device) can be a device such as a mobile station (MS), an advanced mobile station (AMS), a telephone device, a customer premise equipment (CPE), a wireless sensor, a wearable device, a smart home appliance, or a vehicle-mounted system, etc.

[0032] The base station 10 can provide communication coverage for a specific geographical area and can communicate with the user equipment 20 located within this coverage area.

[0033] For the convenience of understanding the operation process of the embodiments of the present invention, the following will illustrate the operation process of the communication system 1 in the embodiments of the present invention with examples in detail. In the following text, the methods described in the embodiments of the present invention will be described in conjunction with each device and its components in the communication system 1. Each process of the method in the embodiments of the present invention can be adjusted according to the implementation situation and is not limited thereto.

[0034] Figure 3 is a flowchart of a power control method according to an embodiment of the present invention. Please refer to Figure 3, the processor 15 of the base station 10 receives uplink data from the user equipment 20 through the transceiver 12 (step S310). For example, in the uplink data, a combination of one or more of a Physical Uplink Shared Channel (PUSCH), a Physical Uplink Control Channel (PUCCH), a Sounding Reference Signal (SRS), and other data from the user equipment 20 may be adopted.

[0035] The processor 15 determines the channel conditions corresponding to the multiple uplink data (step S320). Specifically, each channel condition includes the influence on the corresponding uplink data through the channel. The channel may be affected by factors such as noise, interference, and movement, thereby changing the amplitude and / or phase of the radio signal transmitting the uplink data. For example, the channel condition can be calculated according to one or more metrics such as Signal-to-Interference-plus-Noise Ratio (SINR), Signal-to-Noise Ratio (SNR), Channel State Information (CSI), received signal strength, received signal quality, and other metrics for obtaining the channel condition.

[0036] The processor 15 determines a plurality of influence differences between the channel conditions corresponding to the plurality of uplink data and the expected conditions respectively (step S330). Specifically, the processor 15 performs physical layer operations to calculate the pointers of the corresponding channel conditions based on the received uplink data, and then performs media access control layer (MAC layer) operations on the channel conditions to determine the influence differences. The expected conditions include the influences on the channels through which the base station 10 expects the uplink data to pass. Similarly, the expected conditions can be represented by one or more metrics such as SINR, SNR, CSI, received signal strength, received signal quality, or other metrics used to know the channel conditions. In addition, each influence difference is the difference obtained by subtracting the channel condition from the (quantified) expected condition, and based on this, the amount of the influence difference and which one is larger / smaller can be known. For example, if the SINR of the current channel is 22 decibels (dB) and the expected SINR is 20 dB, the difference between the two, -2 dB, means that the SINR of the current channel is 2 dB larger than the expected SINR. It should be noted that in other embodiments, it may also be that the channel condition is the minuend and the expected condition is the subtrahend. In addition, in addition to directly using the difference between the aforementioned two as the difference, the aforementioned difference can also be further quantified into a metric value, and based on this, it represents the influence difference. For example, the metric value for a SINR difference less than -3 dB is 0, the metric value for a SINR difference between -3 and 0 is 1, and so on, and these metric values are used as the influence differences.

[0037] The processor 15 determines a transmission power instruction according to the statistics of the plurality of influence differences (step S340). Specifically, for each user equipment 20, the processor 15 statistically calculates the plurality of influence differences to obtain statistics, and sets the adjustment amount or the specified power indicated by the transmission power instruction according to the statistics. In addition, the transmission power instruction is used to control the power used by the user equipment 20 to transmit subsequent uplink data. That is, the user equipment 20 sets the uplink transmission power based on the transmission power instruction, and transmits subsequent uplink data accordingly.

[0038] The transmission power instruction can indicate the adjustment amount of the uplink transmission power. For example, the base station 10 can use a Transmission Power Control (TPC) instruction as the transmission power instruction, and the user equipment 20 can set the uplink transmission power according to the TPC instruction transmitted by the base station 10. Table (1) is an embodiment showing the correspondence between the TPC instruction and the adjustment amount:

[0039] Table (1)

[0040] TPC command value Adjustment amount [dB] 0 -1 1 0 2 1 3 3

[0041] Among them, a positive adjustment value represents that the user equipment 20 increases the uplink transmission power, a negative value represents that the user equipment 20 decreases the uplink transmission power, and an adjustment value of zero represents that the user equipment 20 maintains the existing uplink transmission power. Another example is that Table (2) is another embodiment showing the correspondence between the TPC command and the adjustment value:

[0042] Table (2)

[0043] TPC command value Adjustment amount [dB] First command value First power adjustment value Second command value Second power adjustment value Third command value Third power adjustment value Fourth command value Fourth power adjustment value Fifth command value Fifth power adjustment value Sixth command value Sixth power adjustment value Seventh command value Seventh power adjustment value Eighth command value Eighth power adjustment value

[0044] Among them, the command value and the adjustment value can be determined according to actual requirements. Another example is that the transmission power command can indicate the desired uplink transmission power.

[0045] In one embodiment, the statistic includes the sum of multiple influence differences. For example, whenever the base station 10 receives uplink data of a certain user equipment, the influence differences are accumulated to obtain the sum of these influence differences (the desired situation minus the channel situation). The processor 15 can determine a first comparison result between the sum of the influence differences and the difference threshold. The first comparison result includes that the sum of the influence differences is greater than, less than, and / or equal to the difference threshold. The channel situation takes SINR as an example, and the difference threshold is, for example, 0, but not limited thereto. In addition, the processor 15 can determine a second comparison result between the last difference and the difference threshold. This last difference is the influence difference (the desired situation minus the channel situation corresponding to the last received uplink data among those uplink data) between the channel situation corresponding to the last received uplink data and the desired situation among those uplink data. For example, within a specific period, the base station 10 receives 25 uplink data from a certain user equipment 20. The last received data can be the 25th or other ordered uplink data according to the order. That is, the last received data is received later than other data and can also show the current channel situation. In addition, the second comparison result includes that the last difference is greater than, less than, and / or equal to the difference threshold.

[0046] Next, the processor 15 can determine the transmission power command according to the first comparison result and the second comparison result. The first comparison result can reflect the channel situation at multiple time points during the statistical period or a period before the current time point, and the second comparison result can reflect the channel situation at the current time point.

[0047] In one embodiment, each impact difference is the difference obtained by subtracting each channel condition from the desired condition, corresponding to both the first comparison result and the second comparison result being greater than the difference threshold. The processor 15 may transmit a transmission power instruction to set the user equipment 20 to increase the uplink transmission power for transmitting subsequent data. That is, the quantization values of the channel conditions during the statistical period and the current channel condition are generally lower than the desired condition. Therefore, the desired condition can be achieved by increasing the uplink transmission power. Taking Table (1) as an example, a TPC instruction of 2 means that the user equipment 20 increases the uplink transmission power by 1 dB. Corresponding to both the first comparison result and the second comparison result being less than the difference threshold, the processor 15 may transmit a transmission power instruction to set the user equipment 20 to decrease the uplink transmission power for transmitting subsequent data. That is, the quantization values of the channel conditions during the statistical period and the current channel condition are generally higher than the desired condition. Therefore, the desired condition can be achieved by decreasing the uplink transmission power. Taking Table (1) as an example, a TPC instruction of 0 means a decrease of 1 dB.

[0048] In addition, corresponding to one of the first comparison result and the second comparison result being less than the difference threshold and the other being greater than the difference threshold, the processor 15 may maintain the existing uplink transmission power to transmit subsequent data. That is, the first comparison result is less than the difference threshold but the second comparison result is greater than the difference threshold, or the second comparison result is less than the difference threshold but the first comparison result is greater than the difference threshold. In addition, such a comparison result indicates that the channel conditions during the statistical period may change repeatedly between being higher and lower than the desired condition. Therefore, the uplink transmission power can be maintained to counter the rapidly changing channel conditions. Taking Table (1) as an example, a TPC instruction of 1 means neither increasing nor decreasing the uplink transmission power.

[0049] Please refer to Figure 4 , Figure 4 is a flowchart of an embodiment for determining the transmission power instruction (step S340). In this embodiment, the channel condition is represented by SINR. Whenever the receiving base station 10 receives the uplink data of a certain user equipment 20, the processor 15 calculates the SINR corresponding to this uplink data and the impact difference between it and the desired SINR, and accumulates the impact difference (step S410). The processor 15 determines whether the number of uplink data received or accumulated during the statistical period reaches the quantity threshold (for example, 20, 50, or 80) (step S420).

[0050] If the number corresponding to multiple uplink data or the number of accumulations does not equal the quantity threshold, the processor 15 does not adjust the existing uplink transmission power of the user equipment 20, or sends a transmission power instruction to the user equipment 20 to maintain the existing uplink transmission power, and returns to step S410 to continue accumulating the impact difference. For example, during the statistical period, if there is a need for the base station 10 to send a transmission power instruction but the quantity does not reach the quantity threshold, the base station 10 sends a transmission power instruction to the user equipment 20 and sets the adjustment amount of the uplink transmission power to zero. Another example is that if the base station 10 has no need to send a transmission power instruction, the base station 10 disables / stops / does not send a transmission power instruction to the user equipment 20.

[0051] Only when the number corresponding to multiple uplink data or the number of accumulations is equal to or greater than the quantity threshold, does the processor 15 determine the transmission power instruction according to the statistical quantities of multiple impact differences. The mathematical expression for accumulating the difference is where SINR i,target is the desired SINR, SINR i,received is the SINR corresponding to the i-th uplink data, and P is a preset quantity threshold.

[0052] In step S430, the processor 15 determines the transmission power instruction according to the first comparison result and the second comparison result. If both the first comparison result and the second comparison result are greater than the difference threshold, the processor 15 can send a transmission power instruction to the user equipment 20 to increase the uplink transmission power for transmitting subsequent data (step S431). Taking Table (1) as an example, if the final difference is 2 dB and it is between the adjustment amounts 1 and 3 in Table (1), the TPC instruction is 2 and it represents an increase of 1 dB; if the final difference is 3.5 dB and it is greater than the adjustment amount 3 in Table (1), the TPC instruction is 3 and it represents an increase of 3 dB. That is, the greater the final difference, the greater the increase; conversely, the smaller the increase; however, this is not limited thereto.

[0053] If both the first comparison result and the second comparison result are greater than the difference threshold, the processor 15 can send a transmission power instruction to the user equipment 20 to reduce the uplink transmission power for transmitting subsequent data (step S432). Taking Table (1) as an example, the TPC instruction is 0 and it represents a decrease of 1 dB. In addition, if the first comparison result is less than the difference threshold but the second comparison result is greater than the difference threshold, or the second comparison result is less than the difference threshold but the first comparison result is greater than the difference threshold, the processor 15 allows the user equipment 20 to maintain the existing uplink transmission power to transmit subsequent data (step S433). Taking Table (1) as an example, the TPC instruction is 1.

[0054] In one embodiment, the statistic includes the average value or weighted operation value of multiple impact differences. The average value can adopt a moving average (also known as a rolling average or sliding average), such as a simple moving average, exponential moving average, weighted moving average, or cumulative moving average, to determine the average value of a subset formed by multiple impact differences, and thereby obtain the trend of the impact difference changing over time. At this time, the first comparison result can be the comparison result between the moving average value and the difference threshold. On the other hand, the weighted operation value can be obtained by assigning the same or different weights to those impact differences (for example, those closer to the current time point have larger weights, and those farther from the current time have smaller weights), multiplying each impact difference by the corresponding weight, and summing all the products. At this time, the first comparison result can be the comparison result between the weighted operation value and the difference threshold.

[0055] It should be noted that the statistic may also have other variations, such as the quantity and / or frequency of the quantization values of those channel conditions within the statistical period being greater than or less than the expected conditions.

[0056] In one embodiment, the uplink data used to determine the statistic passes error checking. The error checking is, for example, Cyclic Redundancy Check (CRC), parity check, or Hamming code check. The processor 15 performs error checking on the uplink data through physical layer operations. When the uplink data passes the error checking, the processor 15 can retain the impact difference corresponding to this uplink data and thereby determine the statistic. The uplink data that fails the error checking is not used to determine the transmission power instruction. For example, when the uplink data fails to pass the error checking, the processor 15 can ignore / delete the impact difference corresponding to this uplink data, and disable / stop / not use this impact difference to determine the statistic.

[0057] Please refer to Figure 3, the processor 15 may transmit a transmission power instruction via the transceiver 12 to set the uplink transmission power for the user equipment 20 to transmit subsequent data (step S350). Specifically, the base station 10 transmits a transmission power instruction to the user equipment 20, enabling the user equipment 20 to adjust the uplink transmission power for transmitting subsequent uplink data according to this transmission power instruction. In one embodiment, the transmission power instruction is transmitted via Downlink Control Information (DCI). The DCI can be DCI format 0_0, DCI format 0_1, DCI format 1_0, DCI format 1_1, DCI format 2_2 with CRC scrambled by TPC-PUSCH-RNTI, DCI format 2_2 with CRC scrambled by TPC-PUCCH-RNTI, or DCI format 2_3 / 3 / 3A. Also, for example, the transmission power instruction is transmitted via other control signaling.

[0058] In summary, in the power control method and base station of the embodiments of the present invention, the channel change during the statistical period is confirmed using the statistic of the influence difference between the channel situation and the desired situation, and the transmission power instruction is determined accordingly. Additionally, the correctness of the uplink data is confirmed. Therefore, making the power adjustment conform to the actual channel situation can improve the reliability of power adjustment in a rapidly changing wireless channel, solve the situation of over-adjustment or incorrect adjustment of the uplink power caused by the traditional TPC determination method, and further reduce the user experience of the end user.

[0059] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A power control method, characterized in that, including: receiving multiple uplink data of a user equipment; determining channel conditions corresponding to the multiple uplink data, where each of the channel conditions includes the influence received by the corresponding uplink data via a channel; determining multiple influence differences between the channel conditions corresponding to the multiple uplink data and an expected condition respectively; determining a transmission power instruction according to a statistic of the multiple influence differences, where the statistic includes the sum of the multiple influence differences, and the step of determining the transmission power instruction according to the statistic of the multiple influence differences includes: determining a first comparison result between the sum and a difference threshold; determining a second comparison result between a last difference and the difference threshold, where the last difference is the influence difference between the channel condition corresponding to the last received uplink data among the multiple uplink data and the expected condition; and determining the transmission power instruction according to the first comparison result and the second comparison result, where each of the influence differences is a difference obtained by subtracting each of the channel conditions from the expected condition, and the step of determining the transmission power instruction according to the first comparison result and the second comparison result includes: corresponding to both the first comparison result and the second comparison result being greater than the difference threshold, setting the transmission power instruction to set the user equipment to increase the uplink transmission power for transmitting subsequent data; and corresponding to both the first comparison result and the second comparison result being less than the difference threshold, setting the transmission power instruction to set the user equipment to reduce the uplink transmission power for transmitting the subsequent data; and transmitting the transmission power instruction to set the uplink transmission power for the user equipment to transmit subsequent data.

2. The power control method according to claim 1, wherein The step of determining the transmission power instruction according to the first comparison result and the second comparison result includes: corresponding to one of the first comparison result and the second comparison result being less than the difference threshold and the other being greater than the difference threshold, setting the user equipment to maintain the uplink transmission power for transmitting the subsequent data.

3. The power control method according to claim 1, wherein further including: corresponding to the number of the multiple uplink data being equal to a number threshold, determining the transmission power instruction according to the statistic of the multiple influence differences; and corresponding to the number of the multiple uplink data not being equal to the number threshold, setting the user equipment to maintain the uplink transmission power for transmitting the subsequent data.

4. The power control method according to claim 1, characterized in that performing an error check on the multiple uplink data, and when the multiple uplink data pass the error check, using them to determine the statistic; the uplink data that do not pass the error check are not used to determine the transmission power instruction.

5. The power control method according to claim 1, wherein The channel condition and the expected condition are calculated according to a signal-to-interference-plus-noise ratio, any one of the multiple uplink data is a physical uplink shared channel, a physical uplink control channel or a sounding reference signal, and the transmission power instruction is transmitted through downlink control information.

6. The power control method according to claim 1, characterized in that, The statistic includes an average value or a weighted operation value of the multiple influence differences.

7. A base station, characterized in that, including: A transceiver for receiving multiple uplink data of a user equipment; and a processor coupled to the transceiver and configured to: determine channel conditions corresponding to the multiple uplink data, where each of the channel conditions includes the impact on the corresponding uplink data through a channel; determine multiple impact differences between the channel conditions corresponding to the multiple uplink data and an expected condition; determine a transmission power instruction according to a statistic of the multiple impact differences; and transmit the transmission power instruction through the transceiver to set an uplink transmission power for the user equipment to transmit subsequent data, where the statistic includes a sum of the multiple impact differences, and the processor is further configured to: determine a first comparison result between the sum and a difference threshold; determine a second comparison result between a last difference and the difference threshold, where the last difference is an impact difference between the channel condition corresponding to the last received uplink data among the multiple uplink data and the expected condition; determine the transmission power instruction according to the first comparison result and the second comparison result, where each of the impact differences is a difference obtained by subtracting each of the channel conditions from the expected condition; corresponding to both the first comparison result and the second comparison result being greater than the difference threshold, set the transmission power instruction to set the user equipment to increase the uplink transmission power for transmitting the subsequent data; and corresponding to both the first comparison result and the second comparison result being less than the difference threshold, set the transmission power instruction to set the user equipment to decrease the uplink transmission power for transmitting the subsequent data.

8. The base station according to claim 7, characterized in that, The processor is further configured to: corresponding to one of the first comparison result and the second comparison result being less than the difference threshold and the other being greater than the difference threshold, set the user equipment to maintain the uplink transmission power for transmitting the subsequent data.

9. The base station according to claim 7, characterized in that, The processor is further configured to: corresponding to the number of the multiple uplink data being equal to a number threshold, determine the transmission power instruction according to the statistic of the multiple impact differences; and corresponding to the number of the multiple uplink data not being equal to the number threshold, set the user equipment to maintain the uplink transmission power for transmitting the subsequent data.

10. The base station according to claim 7, wherein perform error checking on the multiple uplink data, and when the multiple uplink data pass the error checking, use them to determine the statistic; the uplink data that fails the error checking is not used to determine the transmission power instruction.

11. The base station according to claim 7, characterized in that, The channel condition and the expected condition are calculated according to a signal-to-interference-plus-noise ratio, any one of the multiple uplink data is a physical uplink shared channel, a physical uplink control channel or a sounding reference signal, and the transmission power instruction is transmitted through downlink control information.

12. The base station according to claim 7, wherein The statistic includes an average value or a weighted operation value of the multiple impact differences.

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