WO2022115998A1

WO2022115998A1 - Power control method and apparatus

Info

Publication number: WO2022115998A1
Application number: PCT/CN2020/133125
Authority: WO
Inventors: 李广俊; 孟祥涛; 聂广材; 董振奇; 郭江
Original assignee: 华为技术有限公司
Priority date: 2020-12-01
Filing date: 2020-12-01
Publication date: 2022-06-09

Abstract

The present application relates to a power control method. A terminal establishes a communication channel with a network device, and performs communication on the communication channel by using a mode having a modulation order greater than or equal to 256 QAM. The terminal sends service information and the interference condition of the communication channel to the network device, such that the network device determines the accuracy of data transmission according to the service information. In combination with the accuracy of data transmission and the interference condition of the communication channel, a power control command is sent to the terminal. The terminal receives the power control command sent by the network device, and reduces the transmitting power of the terminal. In the present application, in combination with the interference condition of a communication channel and the accuracy of data transmission, a power control command for reducing the transmitting power of a terminal is determined, such that the terminal reduces the transmitting power of the terminal according to the power control command. A continuous EVM deterioration caused by an increase in transmitting power in a relatively high modulation mode is solved, and an increase in a block error rate and a decrease in throughput are reduced.

Description

A power control method and device

technical field

The present application relates to the field of communications, and in particular, to a power control method and device in a high-order modulation mode.

Background technique

In the 3rd generation partnership project (3GPP) long term evolution (LTE) and 5G new radio (NR), power control is an essential function. After the user equipment (UE) establishes a connection with the base station (BS), the BS can send feedback information to the UE, so that the UE can adjust the transmit power according to the feedback information. At this time, the UE and the BS form a control loop, at this time The power control can be called closed-loop power control, referred to as closed-loop power control.

The closed-loop power control can separate the inner-loop power control and the outer-loop power control. The inner loop power control may be a process in which the receiver obtains a signal-to-interference ratio (SIR) value from the sender, and adjusts the transmit power of the sender accordingly. For example, when the SIR value obtained by the BS from the UE is greater than the target SIR value, it controls the UE to reduce the transmit power on the air interface; on the contrary, if the obtained SIR value is less than the target SIR value, it controls the UE to reduce the transmit power on the air interface. raised. The outer loop power control is used to determine the target SIR value in the above inner loop power control. The BS detects the block error rate (block error rate, BLER) of the uplink data reported by the UE, and compares it with the block error rate allowed by the service. If the reported block error rate of the uplink service is greater than the block error rate allowed by the service, the target SIR value is increased. If the reported block error rate of the uplink service is less than the block error rate allowed by the service, the target SIR value is lowered. The inner loop power control is a fast power control process, for example, an adjustment can be performed every subframe. The outer loop power control is a slow power control process, and is generally adjusted once every few hundred milliseconds.

Currently, when the UE communicates with the BS in a quadrature amplitude modulation (QAM) mode with a modulation order greater than or equal to 256, the UE may experience high transmit power and high block error rate. According to the prior art, when the BS detects a high block error rate, it will consider that the transmit power of the UE is not enough, so it will increase the target SIR value through the outer loop power control, which causes the BS to further improve the UE through the closed loop power control. transmit power. At this time, not only the problem of high block error rate cannot be solved, but also when the QAM mode with modulation order of 256 and above is used, BS clipping will occur after increasing the transmit power to a certain value, resulting in error vector magnitude (error vector magnitude). , EVM) deteriorates and further increases the block error rate. At the same time, for the terminal side, clipping will also be caused because the transmit power of the base station is too high. Therefore, the problem of high block error rate caused by high transmit power cannot be solved for both the base station and the terminal.

SUMMARY OF THE INVENTION

In view of this, the embodiments of the present application provide a power control method, which can reduce the situation that the block error rate or throughput of communication continues to deteriorate in a higher-order modulation mode.

In a first aspect, the present application provides a power control method, wherein a network device uses a QAM mode with a modulation order greater than or equal to 256 to communicate on a communication channel between a terminal and a network device, and the method includes: the network device receiving Service information from the terminal. Determines the accuracy level of data transmission in upstream traffic communications. The uplink interference situation information from the terminal is received, and the uplink interference situation information is used to indicate the interference situation level of the uplink communication channel. When the network device determines that the accuracy level of data transmission in the uplink service communication is not higher than the first accuracy level threshold, and the interference level of the uplink communication channel is not higher than the first interference level threshold, it sends a message to the terminal for reducing the Power control command for transmit power. The present application determines and sends a power control command for reducing the transmit power of the terminal by combining the interference situation of the communication channel and the accuracy of data transmission, so that the terminal can reduce the transmit power of the terminal according to the power control command. It solves the continuous deterioration of the error vector magnitude (EVM) caused by increasing the transmit power in the modulation mode with a higher modulation order, and reduces the increase of the block error rate and the decrease of the throughput.

In a possible implementation manner, the accuracy level of data transmission in the uplink service communication is not higher than the first accuracy level threshold, including: the block error rate in the uplink service communication is greater than or equal to the first block error rate threshold; or The throughput in the uplink traffic communication is less than or equal to the first throughput threshold.

In a possible implementation manner, the interference level of the uplink communication channel is not higher than the first interference level threshold, including: the uplink signal-to-interference plus noise ratio (SINR) is greater than or equal to the first SINR Threshold; or uplink signal-to-noise ratio (signal noise ratio, SNR) is greater than or equal to the first SNR threshold; or uplink signal-to-interference ratio SIR is greater than or equal to the first SIR threshold; or uplink reference signal received quality (reference signal received quality, RSRQ) is greater than or equal to the first RSRQ threshold; or an uplink received signal strength indicator (received signal strength indicator, RSSI) is less than or equal to the first RSSI threshold.

In a possible implementation, when the network device determines that the accuracy level of data transmission in the uplink service communication is not higher than the first accuracy level threshold, and the interference level of the uplink communication channel is not higher than the first interference level threshold , sending a power control command for reducing the transmit power of the terminal to the terminal, including: when the network device determines that the accuracy level of data transmission in the uplink service communication is not higher than the first accuracy level threshold, and the interference level of the uplink communication channel is not higher than the When it is higher than the first interference level threshold and the first duration is not less than the first duration threshold, a power control command for reducing the transmit power of the terminal is sent to the terminal. The power control command word of the present application can also be determined according to the duration, thereby reducing the frequent switching of transmit power caused by interference in a short period of time.

In a possible implementation manner, the network device can also adjust the transmit power of its own device, so the method further includes: receiving response information from the terminal. The accuracy level of data transmission in downlink service communication is determined according to the response information. Receive downlink interference situation information from the terminal, and the downlink interference situation information is used to indicate the interference situation level of the downlink communication channel; when the network device determines that the accuracy level of data transmission in the downlink service communication is not higher than the second accuracy level threshold, and the downlink When the interference level of the communication channel is not higher than the second interference level threshold, the transmit power of the network device is reduced. The network device of the present application can also reduce the transmission power of the network device according to the reception situation of the downlink channel and the interference situation of the downlink communication channel fed back by the terminal.

In a possible implementation manner, the accuracy level of data transmission in the downlink service communication is not higher than the second accuracy level threshold includes: the block error rate in the downlink service communication is greater than or equal to the second block error rate threshold; or The throughput in the traffic communication is less than or equal to the second throughput threshold.

In a possible implementation manner, the interference level of the downlink communication channel is not higher than the second interference level threshold, including: the downlink SINR is greater than or equal to the second SINR threshold; or the downlink SNR is greater than or equal to the second SNR threshold; or the downlink SINR is greater than or equal to the second SNR threshold The SIR is greater than or equal to the second SIR threshold; or the downlink RSRQ is greater than or equal to the second RSRQ threshold; or the downlink RSSI is less than or equal to the second RSRQ threshold.

In a possible implementation, when the network device determines that the accuracy level of data transmission in the downlink service communication is not higher than the second accuracy level threshold, and the interference level of the downlink communication channel is not higher than the second interference level threshold , reducing the transmission power of the network device, including: when the network device determines that the accuracy level of data transmission in the downlink service communication is not higher than the second accuracy level threshold, the interference level of the downlink communication channel is not higher than the second interference level threshold, And when the second duration is not less than the second duration threshold, the transmit power of the network device is reduced. In the present application, the reduction of the transmission power of the network device can also be determined according to the duration, thereby reducing the frequent switching of the transmission power caused by interference in a short period of time.

In a possible implementation manner, if a retransmission policy is set for the sending of the uplink service information or the downlink service information, the number of retransmissions is set to 0 or 1. By controlling the number of retransmissions, the present application reduces the situation of multiple retransmissions caused by lowering the transmit power, which leads to an increase in the block error rate and a decrease in throughput, and can reduce power consumption.

In a possible implementation manner, sending a power control command for reducing the transmit power of the terminal to the terminal includes: sending a power control command word to the terminal, where the power control command word is used to reduce the transmit power of the terminal.

In a possible implementation, the power control command word includes: accumulation type or absolute type.

In a second aspect, the present application provides a power control method, wherein a network device uses a QAM mode with a modulation order greater than or equal to 256 to communicate on a communication channel between a terminal and a network device, and the method includes: the network device receives Service information from the terminal. Determines the accuracy level of data transmission in upstream traffic communications. The uplink interference situation information from the terminal is received, and the uplink interference situation information is used to indicate the interference situation level of the uplink communication channel. When the network device determines that the accuracy level of data transmission in the uplink service communication is not lower than the third accuracy level threshold, and the interference level of the uplink communication channel is not higher than the first interference level threshold, it sends a message to the terminal for reducing the Power control command for transmit power. The present application determines and sends a power control command for reducing the transmit power of the terminal by combining the interference situation of the communication channel and the accuracy of data transmission, so that the terminal can reduce the transmit power of the terminal according to the power control command. It is solved that in a modulation mode with a higher modulation order, when the throughput is good and the interference of the communication channel is good, by appropriately reducing the transmit power, while ensuring the communication efficiency, the power consumption is reduced and the resources are saved.

In a possible implementation manner, the accuracy level of data transmission in the uplink service communication is not lower than the third accuracy level threshold, including: the block error rate in the uplink service communication is less than or equal to the third block error rate threshold; or The throughput in the upstream traffic communication is greater than or equal to the third throughput threshold.

In a possible implementation manner, the interference level of the uplink communication channel is not higher than the first interference level threshold, including: the uplink SINR is greater than or equal to the first SINR threshold; or the uplink SNR is greater than or equal to the first SNR threshold; or the uplink The SIR is greater than or equal to the first SIR threshold; or the uplink RSRQ is greater than or equal to the first RSRQ threshold; or the uplink RSSI is less than or equal to the first RSSI threshold.

In a possible implementation, when the network device determines that the accuracy level of data transmission in the uplink service communication is not lower than the third accuracy level threshold, and the interference level of the uplink communication channel is not higher than the first interference level threshold , sending a power control command for reducing the transmission power of the terminal to the terminal, including: when the network device determines that the accuracy level of data transmission in the uplink service communication is not lower than the third accuracy level threshold, and the interference level of the uplink communication channel is not lower than the When it is higher than the first interference level threshold and the first duration is not less than the first duration threshold, a power control command for reducing the transmit power of the terminal is sent to the terminal. The power control command word of the present application can also be determined according to the duration, thereby reducing the frequent switching of transmit power caused by interference in a short period of time.

In a possible implementation manner, the network device can also adjust the transmit power of its own device, so the method further includes: receiving response information from the terminal. The accuracy level of data transmission in downlink service communication is determined according to the response information. Receive downlink interference situation information from the terminal, and the downlink interference situation information is used to indicate the interference level of the downlink communication channel; when the network device determines that the accuracy level of data transmission in the downlink service communication is not lower than the fourth accuracy level threshold, and the downlink When the interference level of the communication channel is not higher than the second interference level threshold, the transmit power of the network device is reduced. The network device of the present application can also reduce the transmission power of the network device according to the reception situation of the downlink channel and the interference situation of the downlink communication channel fed back by the terminal. At the same time, the present application can also appropriately reduce the transmission power of the network device when the block error rate is good and the interference of the communication channel is good, so as to reduce power consumption and save resources while ensuring communication efficiency.

In a possible implementation manner, the accuracy level of data transmission in the downlink service communication is not lower than the fourth accuracy level threshold includes: the block error rate in the downlink service communication is less than or equal to the fourth block error rate threshold; or The throughput in the traffic communication is greater than or equal to the fourth throughput threshold.

In a possible implementation manner, the interference level of the downlink communication channel is not higher than the second interference level threshold, including: the downlink SINR is greater than or equal to the second SINR threshold; or the downlink SNR is greater than or equal to the second SNR threshold; or the downlink SINR is greater than or equal to the second SNR threshold; The SIR is greater than or equal to the second SIR threshold; or the downlink RSRQ is greater than or equal to the second RSRQ threshold; or the downlink RSSI is less than or equal to the second RSRQ threshold.

In a possible implementation, when the network device determines that the accuracy level of data transmission in the downlink service communication is not lower than the fourth accuracy level threshold, and the interference level of the downlink communication channel is not higher than the second interference level threshold , reducing the transmission power of the network equipment, including: when the network equipment determines that the accuracy level of data transmission in downlink service communication is not lower than the fourth accuracy level threshold, the interference level of the downlink communication channel is not higher than the second interference level threshold, And when the second duration is not less than the second duration threshold, the transmit power of the network device is reduced. In the present application, the reduction of the transmission power of the network device can also be determined according to the duration, thereby reducing the frequent switching of the transmission power caused by interference in a short period of time.

In a third aspect, the present application provides a power control device, which is a network device, and the network device adopts a mode with a modulation order greater than or equal to 256 quadrature amplitude modulation QAM on a communication channel between a terminal and the network device For service communication, the apparatus includes: a receiving module, a processing module, and a sending module, and is used for implementing the method of any one of the above-mentioned first aspect.

In a fourth aspect, the present application provides a power control device, which is a network device, and the network device adopts a mode with a modulation order greater than or equal to 256 quadrature amplitude modulation QAM on a communication channel between a terminal and the network device For service communication, the apparatus includes: a receiving module, a processing module and a sending module, and is used for implementing the method of any one of the second aspect above.

In a fifth aspect, the present application provides a communication device, comprising: at least one processor and an interface circuit, and a related computer program is executed in the at least one processor, so that the communication device executes the method of any one of the above first aspects .

In a sixth aspect, the present application provides a communication device, comprising: at least one processor and an interface circuit, and a related computer program is executed in the at least one processor, so that the communication device executes the method of any one of the second aspects above .

In a seventh aspect, the present application provides a computer program product, where the computer program product includes related program instructions, and when the related program instructions are executed, implements the method of any one of the above-mentioned first aspect.

In an eighth aspect, the present application provides a computer program product. The computer program product includes related program instructions, and when the related program instructions are executed, the method of any one of the above-mentioned second aspects is implemented.

In a ninth aspect, the present application provides a communication system, including the communication device of any one of the third aspect above, or the communication device of the fifth aspect above.

In a tenth aspect, the present application provides a communication system, including the communication device of any one of the above-mentioned fourth aspect, or, including the above-mentioned communication device of the sixth aspect.

The present application provides a power control method and device, and a communication system. A communication channel is established between the terminal and the network device, and a mode with a modulation order greater than or equal to 256QAM is used for communication between the terminal and the network device. When the block error rate of data transmitted in the uplink channel or downlink channel is high or the throughput is poor, it is also necessary to determine the interference degree of the communication channel. In this mode, the block error rate or throughput continues to deteriorate due to increasing the transmit power.

Description of drawings

1 is a schematic diagram of an application scenario provided by an embodiment of the present application;

2 is a schematic diagram of a closed-loop power control;

FIG. 3 is a schematic diagram of a power control interaction provided by an embodiment of the present application;

FIG. 4 is another schematic diagram of power control interaction provided by an embodiment of the present application;

FIG. 5 is another schematic diagram of power control interaction provided by an embodiment of the present application;

FIG. 6 is a schematic diagram of still another power control interaction provided by an embodiment of the present application;

FIG. 7 is a schematic diagram of a power control apparatus according to an embodiment of the present application;

FIG. 8 is a schematic diagram of a terminal structure or a network device according to an embodiment of the present application.

Detailed ways

The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings in the embodiments of the present application.

This application mainly applies to the scenario of communication between a terminal and a network device. For example, the schematic diagram of the application scenario shown in FIG. 1 . In this scenario, multiple terminals establish communication channels with network devices, and use high-order modulation modes for service communication. Wherein, the high-order modulation mode of the present application is a modulation mode with a modulation order greater than or equal to 256QAM. This scenario involves a wireless communication system, and this application is mainly applied to the 5G NR system. Of course, in some instances, the present application can also be applied to other communication systems, such as long term evolution (LTE), long term evolution-advanced (LTE-A), universal mobile communication system (universal mobile communication system) mobile telecommunications system, UMTS), time division multiple access (time division multiple access, TDMA), code division multiple access (code division multiple access, CDMA), wideband code division multiple access (wideband code division multiple access, W-CDMA) , time division synchronous code division multiple access (time division-synchronous code division multiple access, TD-SCDMA), code division multiple access 2000 (code division multiple access 2000, CDMA2000), general wireless packet service (general packet radio service, GPRS ), global system for mobile communications (GSM), wireless fidelity (wireless fidelity, WIFI), etc. It can be understood that, as long as there are access network devices or network devices, such as base stations, and terminals, in the communication system. Within a certain coverage area of the base station, the terminal sends uplink signals to the base station and/or receives downlink signals sent by the base station.

In the application scenario shown in FIG. 1 , a communication device is included, wherein the communication device includes a network device and a terminal. Any one of the above-mentioned air interface resources can be used for wireless communication between different communication devices. The network device may also be referred to as a network-side device, such as a base station. The air interface resources may include at least one of time domain resources, frequency domain resources, code resources and space resources. It can be understood that, at least one can also be described as one or more, wherein the multiple can be two, three, four or more, which is not limited in this application. It can be understood that the network device involved in this application may be a base station.

The terminal involved in this embodiment of the present application may be a device with a wireless transceiver function, which may be deployed on land, including indoor or outdoor, handheld or vehicle-mounted, etc.; may also be deployed on water, such as a ship, etc.; may also be deployed In the air, such as airplanes, balloons and satellites, etc., this application is not limited here. The terminal may be a user equipment (UE), wherein the UE includes a handheld device with a wireless communication function, a personal digital assistant (PDA), a laptop (laptop), a mobile computer, a desktop computer, a vehicle devices, wearables, or other computing devices, etc. Exemplarily, the UE may be a mobile phone, a tablet computer, or a computer with a wireless transceiver function. The terminal can also be a virtual reality (VR) terminal, an augmented reality (AR) terminal, a wireless terminal in industrial control, a wireless terminal in unmanned driving, a wireless terminal in telemedicine, and a smart grid. Wireless terminals, wireless terminals in smart cities, wireless terminals in smart homes, and so on.

In this embodiment of the present application, the device for implementing the function of the terminal may be a terminal; it may also be a device capable of supporting the terminal to realize the function, such as a chip system, and the device may be installed in the terminal. In this embodiment of the present application, the chip system may be composed of chips, or may include chips and other discrete devices. In the technical solutions provided by the embodiments of the present application, a device for implementing terminal functions is used as a terminal, and a UE is used as an example to describe the technical solutions provided by the embodiments of the present application.

The network device involved in the embodiments of the present application may be a device deployed in a wireless access network and capable of wirelessly communicating with a terminal, such as a base station. The base station may have various forms, such as a macro base station, a micro base station, a relay station, an access point, etc., which is not limited in this application. Exemplarily, the base station involved in this embodiment of the present application may be a base station in 5G or a base station in LTE, where the base station in 5G may also be referred to as a transmission reception point (transmission reception point, TRP) or a next-generation base station node ( next generation node base, gNB).

In this embodiment of the present application, the apparatus for implementing the function of the network device may be a network device; it may also be an apparatus capable of supporting the network device to implement the function, such as a chip system, and the apparatus may be installed in the network device. In the technical solutions provided by the embodiments of the present application, the device for implementing the functions of the network device is used as the network device, and the base station is used as the network device as an example to describe the technical solutions provided by the embodiments of the present application.

The present application mainly relates to a terminal that is relatively close to the base station, such as the near-point coverage terminal in FIG. 1 . In some examples, the distance between the terminal and the base station can be distinguished by the strength of the signal strength of the terminal. Because in general, the closer the terminal to the base station, the better the signal strength. In an example, a signal strength threshold may be preset, and when the signal strength is greater than or equal to the signal strength threshold, the terminal may be considered as a near-point coverage terminal of the base station. The terminal involved in this application may be understood as a near-point coverage terminal.

When the terminal and the base station adopt the high-order modulation mode, for the near-point coverage terminal, the terminal transmits the signal with the transmit power, which may cause the clipping of the base station, resulting in the deterioration of the EVM and the increase of the block error rate. If the existing power control adjustment method is adopted, it will be considered that the high block error rate caused by insufficient transmit power of the terminal. Therefore, the transmit power will continue to be increased, and the EVM will be further deteriorated, thus entering a vicious circle, and the block error rate will increase with the increase of the transmit power.

For example, a schematic diagram of a closed-loop power control shown in FIG. 2 . It can be seen from FIG. 2 that in the current closed-loop power control scheme, the base station sends a transmit power control command (transmission power control, TPC) to the terminal, so that the terminal can adjust the transmit power. The base station may calculate the TPC to be sent by using a TPC decision algorithm (TPC decision algorithm). For example, target (target) SNR, target SINR or target SIR can be determined, and measured (measured) SNR, measured SINR or measured SIR, and power headroom (PH) report (report) can comprehensively determine the TPC that needs to be sent . In one example, the PH report can be determined by the maximum transmit power (max transmit power) and the currently evaluated transmit power. For example, the difference between the maximum transmit power and the detected transmit power determines the PH report.

For each terminal, establish an uplink physical shared channel (physical uplink shared channel, PUSCH) with the base station, where the PUSCH transmit power calculation formula can be shown in formula 1.

Among them, P _CMAX represents the maximum transmit power. M _PUSCH (i) represents the number of resource blocks (resource blocks, RBs) used for PUSCH transmission in the i-th uplink subframe. P _{o_PUSCH} (j) is the received power level expected by the base station, which is determined by the base station and reflects the received power level expected by the base station when the PUSCH adjustment performance requirement is met. Among them, j=0 corresponds to semi-persistent scheduling between the base station and the terminal, j=1 corresponds to dynamic scheduling between the base station and the terminal, and j=2 corresponds to the authorization parameter value in the random access response (RAR). In one example, P _{o_PUSCH} (j)=P _{o_NOMINAL_PUSCH} (j)+P _{o_UE_PUSCH} (j). Wherein, P _{o_NOMINAL_PUSCH} (j) represents the PUSCH transmit power level expected by the base station when PUSCH demodulation is normally performed. P _{o_UE_PUSCH} (j) is expressed as the power offset of the UE relative to P _{o_NOMINAL_PUSCH} (j), which reflects the influence of terminal level, service type and channel quality on the PUSCH transmit power of different terminals. α is the path loss compensation factor, which can be measured by the base station. PL is the path length between the base station and the terminal. _ΔTF (i) is the power offset value of different modulation and coding scheme (modulation and coding scheme, MCS) formats relative to the reference MCS format. In some cases, _ΔTF (i) can be ignored if α is not considered. In some examples, _ΔTF (i) is turned off by default, ie, _ΔTF (i) is not considered. f(i) is the adjustment amount of the PUSCH transmit power of the terminal, which is obtained by the terminal by mapping the TPC information transmitted in the physical downlink control channel (physical downlink control channel, PDCCH). In one example, f(i) is calculated by the base station through the PUSCH power control algorithm. The PUSCH power control mainly solves the power control in the case of high block error rate (BLER). When the BLER is high, the base station sends a TPC command to increase the power; when the BLER is low, the base station sends a TPC command to reduce the power.

However, in the current solution, when the block error rate is high, it is considered that the transmit power is insufficient, so the transmit power of the terminal is increased through TPC adjustment. However, in the scenario involved in this application, the block error rate will be further deteriorated. Therefore, the current solution cannot solve the situation of high transmit power and high block error rate at the near end, and has great limitations.

The technical solutions provided in the embodiments of the present application can be applied to wireless communication between communication devices. The wireless communication between communication devices may include: wireless communication between a network device and a terminal, wireless communication between a network device and a network device, and wireless communication between a terminal and a terminal. Wherein, in this embodiment of the present application, the term "wireless communication" may also be referred to as "communication" for short, and the term "communication" may also be described as "data transmission", "information transmission", or "transmission", etc.

In the embodiments of the present application, for a technical feature, the technical feature is distinguished by "first", "second", "third", "A", "B", "C" and "D", etc. The technical features described in the "first", "second", "third", "A", "B", "C" and "D" described technical features in no order or order of magnitude.

The technical solutions in the embodiments of the present application will be described in detail below with reference to the accompanying drawings in the embodiments of the present application.

FIG. 3 is a schematic diagram of a power control interaction provided by an embodiment of the present application.

It can be seen from FIG. 3 that the terminal interacts with the base station, and the interaction process mainly involves a scenario in which the channel condition is good but the block error is high in the high-order modulation mode, and the terminal performs power control in this scenario. In this application, the network device may be a base station, and the interaction process includes the following steps:

S301, the network device receives the service information sent by the terminal, and determines the accuracy level of data transmission in the uplink service communication.

The network device may determine the accuracy level of data transmission in the uplink service communication according to the demodulation result of the service information.

It can be understood that when the network device and the terminal communicate with the uplink service, the network device side can use a cyclic redundancy check (cyclic redundancy check, CRC) method to demodulate the uplink service information sent by the terminal, and determine the uplink transmission process. data transfer in . For example, demodulate each group of data of the uplink service information, and use CRC for verification. When the verification is successful, it can be considered that the group of data does not lose information. If the verification fails, it is considered that the group has lost information. In one example, the uplink data transmission situation can be characterized by BLER or throughput, indicating the number of incorrect data blocks per unit time, or the number of correctly transmitted data blocks. Wherein, the unit time may be seconds, milliseconds, etc., which is not limited in this application.

In some examples, the level of accuracy of data transmission can be characterized by the value of parameters such as BLER or throughput. In other examples, the accuracy level of data transmission can be characterized by the relationship between parameters such as BLER or throughput and a preset threshold. Taking BLER as an example, multiple BLER thresholds can be pre-configured to distinguish different accuracy levels. Assuming that the detected uplink BLER is less than or equal to the BLER1 threshold, the accuracy level can be set to 1, which means that the current data transmission is basically complete. precise. When the uplink BLER is greater than the BLER1 threshold and less than or equal to the BLER2 threshold, the accuracy level can be set to 2, and so on. Of course, the number of accuracy levels may be a preset fixed number, and of course the number of levels may also be unfixed, which is not limited in this application. It can be understood that, in the above example, the smaller the grade number represents the higher the accuracy, and in other examples, the larger the grade number may be used to represent the higher the accuracy, which is not limited in this application again.

When the value of BLER is larger, it indicates that there are more erroneous data in the uplink data transmission process; and when the throughput value is lower, it indicates that in the process of uplink data transmission, the less correctly transmitted data, that is, the wrongly transmitted data more.

S302, the network device receives the uplink interference situation information sent by the terminal.

In one example, the terminal performs channel detection on the uplink communication channel to determine uplink interference situation information of the uplink communication channel. The uplink communication channel is an uplink communication channel established between the terminal and the network device.

In an example, before S302, the terminal first completes network access, and establishes an uplink communication channel with the network device. And when QAM with a high modulation order is used between the terminal and the network device, for example, a modulation mode of QAM with a modulation order greater than or equal to 256 is used to perform service communication on the communication channel. In other examples, the modulation mode may also be, for example, 128QAM, 512QAM, 1024QAM, and so on. Typically the modulation mode is an exponent of 2.

Under normal circumstances, the terminal will actively detect the uplink communication channel, and determine the uplink interference situation information of the uplink communication channel. The uplink interference situation information may be used to indicate the interference situation level of the uplink communication channel.

In one example, the level of interference conditions of the uplink communication channel may be characterized by SINR or SNR. In other examples, the SIR can also be used to characterize the interference of the communication channel. It can be understood that, it may be determined according to the actual situation whether to consider only interference or only noise, or to consider both interference and noise, which is not limited in this application. Therefore, the terminal can report the detected SINR, SNR or SIR of the communication channel to the network device. Of course, in some other examples, the interference situation of the communication channel can also be characterized by any feasible parameters such as RSRQ and RSSI.

It can be understood that when the SINR is greater than or equal to the first SINR threshold, or the SNR is greater than or equal to the first SNR threshold, or the SIR is greater than or equal to the first SIR threshold, it can be considered that the channel interference of the current communication channel is small, and the channel in good condition.

Of course, in some examples, the level of interference situation may be characterized by the value of parameters such as SINR, SNR, or SIR. In other examples, the level of interference can be characterized by the relationship between parameters such as SINR, SNR, or SIR and a preset threshold. Taking SINR as an example, multiple SINR thresholds can be preconfigured to distinguish different interference levels. Assuming that the detected uplink SINR is greater than or equal to the SINR1 threshold, the interference level can be set to 1, which means that there is almost no interference at present. When the uplink SINR is less than the SINR1 threshold and greater than or equal to the SINR2 threshold, the interference level can be set to 2, and so on. Of course, the number of interference levels may be a preset fixed number, and of course the number of levels may also be unfixed, which is not limited in this application. It can be understood that, in the above examples, only the smaller the level number represents the smaller the interference, and in other examples, the larger the level number represents the smaller the interference, which is not limited in this application again.

Of course, in some examples, it is also possible to more accurately determine the interference situation by referring to the above parameters such as SINR, SNR, SIR, RSRQ, RSSI, etc., and then combining with reference signal received power (RSRP). . It can be understood that, in order to further and more accurately determine the interference situation, any possible parameters may also be combined, which is not limited in this application.

In an example, S302 may be periodic sending, or may be adding information on channel interference to certain service information and sending the information to the network device together. This application is not limited here.

It can be understood that there is no strict sequence of execution between S301 and S302. That is, S301 can be executed first and then S302 can be executed, or S302 can be executed first and then S301 can be executed. Of course, S301 and S302 can be executed at the same time. This application is not limited here.

S303, when the network device determines that the accuracy level of data transmission in the uplink service communication is not higher than the first accuracy level threshold, and the interference level of the uplink communication channel is not higher than the first interference level threshold, the network device sends a message to the terminal. A power control command used to reduce the transmit power of the terminal.

In one example, the power control command may be TPC.

In one example, when the block error rate is used to represent the accuracy level of data transmission in uplink service communication, the accuracy level of data transmission in uplink service communication is not higher than the first accuracy level threshold, including: in uplink service communication The block error rate of is greater than or equal to the first block error rate threshold.

In one example, when throughput is used to represent the accuracy level of data transmission in uplink service communication, the accuracy level of data transmission in uplink service communication is not higher than the first accuracy level threshold, including: The throughput is less than or equal to the first throughput threshold.

In an example, when the SINR is used to represent the interference level of the uplink communication channel, the interference level of the uplink communication channel is not higher than the first interference level threshold, including: the uplink SINR is greater than or equal to the first SINR threshold.

In one example, when the SNR is used to represent the interference level of the uplink communication channel, the interference level of the uplink communication channel is not higher than the first interference level threshold, including: the uplink SNR is greater than or equal to the first SNR threshold.

In one example, when the SIR is used to represent the interference level of the uplink communication channel, the interference level of the uplink communication channel is not higher than the first interference level threshold, including: the uplink SIR is greater than or equal to the first SIR threshold.

In an example, when RSRQ is used to represent the interference level of the uplink communication channel, the interference level of the uplink communication channel is not higher than the first interference level threshold, including: the uplink RSRQ is greater than or equal to the first RSRQ threshold.

In an example, when RSSI is used to represent the interference level of the uplink communication channel, the interference level of the uplink communication channel is not higher than the first interference level threshold, including: the uplink RSSI is less than or equal to the first RSSI threshold.

In an example, when the above-mentioned SINR, SNR, SIR, RSRQ or RSSI is used to characterize the interference level of the uplink communication channel, the RSRP can also be used to jointly determine the interference level of the uplink communication channel. For example, it may also include determining that the uplink RSRP is less than or equal to the first RSRP threshold.

In another example, an uncertain interference factor may temporarily occur between the network device and the terminal, for example, a signal transmitted by a physical obstacle may be interfered, or some interference source may temporarily interfere with the transmitted signal. Therefore, in order to reduce the frequent adjustment of transmit power in a short period of time, the network device can also determine that the accuracy level of data transmission in the uplink service communication is not higher than the first accuracy level threshold, and the interference level of the uplink communication channel is not higher than the first interference level. The duration of the threshold. It can be determined by the network device that the accuracy level of data transmission in the uplink service communication is not higher than the first accuracy level threshold, the interference level of the uplink communication channel is not higher than the first interference level threshold, and the first duration is not lower than the first In the case of a time duration threshold, a power control command for reducing the transmit power of the terminal is sent to the terminal. That is, the network device considers that the communication environment with low interference and high block error rate is not generated temporarily. Then the network device can further determine the TPC for reducing the transmit power of the terminal.

Therefore, it can be understood that, if the network device determines through S301 and S302 that the communication environment of the current communication channel is low interference and high block error rate, the network device determines the TPC used to lower the transmit power of the terminal, that is, lowers the power control TPC. In one example, the TPC may contain a power control command word, where the power control command word is used to control the terminal to increase or decrease the transmit power. In one example, the power control command word includes an accumulation type and an absolute type. Among them, for the accumulative power control command word, each time the transmit power is adjusted, it is necessary to refer to the adjustment conditions of all the previous power control command words, and accumulate all the adjustment conditions before adjusting the transmit power; and for the absolute type If the power control command word is selected, then every time you adjust the transmit power, you only need to refer to the current power control command word.

In one example, the power control command word included in the down-regulation power control TPC may be a percentage of transmit power variation, such as x%. Of course, in other examples, the power control command word may also be an adjusted transmit power variation, such as y dBm. Or in other examples, the power control command word may also be the adjusted transmit power, such as z dBm.

In some examples, if the network device pre-stores the expected transmit power p ₁ of the terminal, or p ₁ can be calculated by certain formulas, the network device can determine the transmit power according to the current actual transmit power p _n and p ₁ of the terminal The percentage of change is the adjusted transmit power change or the adjusted transmit power. Of course, at this time, p ₁ may be the adjusted transmit power; the absolute value of the difference between p _n and p ₁ may be the adjusted transmit power change; p ₁ / _pn may be the transmit power change percentage.

The terminal receives the down-regulation power control TPC sent by the network device, and then adjusts the transmit power of the terminal according to the power control command word in the down-regulation power control TPC.

In one example, if the power control command word is a percentage of transmit power variation, such as x%. Then the terminal adjusts the transmit power to x% of the original transmit power. For another example, when the power control command word is the adjusted transmit power variation, such as y dBm. Then the adjusted transmit power of the terminal is the original transmit power plus y dBm. It can be understood that y is any value, which can be positive or negative. When y is negative, it means reducing the original transmit power. For another example, the power control command word is the adjusted transmit power, such as z dBm. Then the terminal directly adjusts the original transmit power to z dBm.

In another example, under normal circumstances, the adjustment of the transmit power does not just need to be adjusted once, and multiple adjustments can be made between the terminal and the network device. Therefore, after S303, the steps of S301 to S303 can be repeatedly performed, namely S301' to S303' in Fig. 3 , that is, the dotted lines are shown. Until the terminal adjusts the transmit power to the preset target, and the network device detects that the channel interference of the current communication channel is low and the erroneous data in the uplink data transmission process is low, the transmit power of the terminal may no longer be adjusted.

FIG. 4 is another schematic diagram of power control interaction provided by an embodiment of the present application.

Based on the scenario shown in FIG. 3 , the terminal can demodulate the downlink service information in the downlink channel, and determine corresponding response information for each group of data blocks. It can be understood that the response information is used to describe whether the demodulation of the corresponding data block is successful. In an example, the downlink service information can be checked by means of CRC. The network device can adjust the transmit power of the network device according to the response information determined by the terminal. For details, refer to the interaction diagram shown in FIG. 4 , and the interaction mode may include the following steps:

S401, the network device receives the response information from the terminal.

The network device receives the response information sent from the terminal.

In an example, before the terminal sends the response information to the network device, the terminal also needs to demodulate the downlink service information to determine the response information.

In an example, when the terminal performs service communication with the network device, it can demodulate the downlink service information sent by the network device. In one example, the CRC method can be used to check and determine the response information. For example, demodulation is performed for each group of data of downlink service information, and acknowledgment (ack) information is determined. When the verification is successful, it can be considered that the group of data does not lose information. If the verification fails, it is considered that the group has lost information. In an example, when the ACK information is 0, it is considered that the group number has lost information; when the ACK information is 1, it is considered that the group of data has no information lost. It can be understood that the specific value of the ACK information and the corresponding meaning can be replaced according to the actual situation. Of course, the ACK information can also be replaced with any other equivalent information, which is not limited in this application.

In an example, the manner in which the terminal reports the ACK information may be synchronous or asynchronous. The synchronous mode means that whenever a group of data blocks is verified, an ACK message is sent to the network device immediately. In the asynchronous mode, each time a group of data blocks is verified, an ACK message is sent to the network device at a preset time interval.

S402, the network device determines the accuracy level of data transmission in the downlink service communication according to the response information.

Exemplarily, the network device receives the response information reported by the terminal, and determines the transmission status of the downlink service information according to the response information received within a period of time.

In one example, the number of erroneous data blocks per unit time, that is, the block error rate; or the number of correctly transmitted data blocks per unit time, that is, the throughput. The unit time may be seconds, milliseconds, or the like.

S403: Receive downlink interference situation information sent by the terminal, where the downlink interference situation information is used to indicate an interference situation level of a downlink communication channel.

In an example, the terminal performs channel detection on the downlink communication channel, determines downlink interference situation information of the downlink communication channel, and reports the downlink interference situation information. The downlink communication channel is a downlink communication channel established between the terminal and the network device.

In an example, the downlink interference situation information is similar to the uplink interference situation information. For details, reference may be made to the corresponding description in S302, which is not repeated here.

S404, when the network device determines that the accuracy level of data transmission in the downlink service communication is not higher than the second accuracy level threshold, and the interference level of the downlink communication channel is not higher than the second interference level threshold, reduce the transmission power of the network device .

In one example, when the block error rate is used to represent the accuracy level of data transmission in downlink service communication, the accuracy level of data transmission in downlink service communication is not higher than the second accuracy level threshold, including: in downlink service communication The block error rate of is greater than or equal to the second block error rate threshold.

In an example, when throughput is used to represent the accuracy level of data transmission in downlink service communication, the accuracy level of data transmission in downlink service communication is not higher than the second accuracy level threshold, including: The throughput is less than or equal to the second throughput threshold. At the same time, the terminal can determine whether the downlink SNR is greater than or equal to the first SNR threshold, or determine whether the downlink SINR is greater than or equal to the first SINR threshold, or determine whether the downlink SIR is greater than or equal to the first SIR threshold; or determine whether the downlink RSRQ is greater than or equal to the first SIR threshold The first RSRQ threshold, or determine whether the downlink RSSI is less than or equal to the first RSSI threshold. .

Therefore, it can be understood that the network device determines that the communication environment of the current communication channel is a situation of low interference and high block error rate (or low throughput) through S404, and reduces the transmit power of the network device.

In another example, under normal circumstances, the adjustment of the transmit power of the network device is not suitable for one-time adjustment. Network equipment can be adjusted multiple times. Therefore, after S404, the steps of S401 to S404 can be repeatedly performed, namely S401' to S404' in Fig. 4 , that is, the dotted lines are shown. Until the network device adjusts the transmission power of the network device to the preset target, the network device detects that the channel interference of the current communication channel is small, and the error data in the downlink data transmission process fed back by the terminal is low, the network device can no longer adjust the network The transmit power of the device.

It can be understood that S403 can be executed at any time before S404, that is, S403 can be executed before, between, after or simultaneously with S401 or S402.

Through the above Figures 3 and 4, the terminal near the network device is covered by the terminal. In the high-order modulation mode, when the communication channel interference is small and the block error rate and throughput do not meet expectations, the terminal and the network device can accurately Perform power control and adjust the transmit power to reduce the block error rate and improve throughput.

Compared with the existing scheme of gradually raising the power control, the present application can substantially improve such situations, accurately determine the abnormality of the power control, and further adjust the power control in the correct direction.

FIG. 5 is another schematic diagram of power control interaction provided by an embodiment of the present application.

For near-point coverage terminals near network equipment, the interference of signals is generally low, such as indoor scenes, in other words, there is almost no interference. The transmit power of the terminal is usually maintained at a constant level, at which time the block error rate is 0 or very low, such as a%. Or good throughput, like b Mb/s. At this time, the transmit power of the terminal is mainly to maintain the throughput or maintain the block error rate. If the transmission power is reduced at this time and the throughput or block error rate is allowed to be maintained at a certain level, the purpose of energy saving and power saving can be achieved while ensuring that data transmission is not affected. For example, the block error rate is controlled at (a+n)% and above, or the throughput is controlled at b-n'Mb/s and below, and so on.

Therefore, the present application provides another schematic diagram of power control interaction, for example, as shown in FIG. 5 , the interaction process may include the following steps:

S501, the terminal reports the interference situation of the uplink channel.

In one example, the terminal performs channel detection on the uplink communication channel to determine the interference situation of the uplink communication channel.

It can be understood that the implementation process of S501 is the same as the implementation process of S302. For details, reference may be made to the description of S302, which will not be repeated here.

S502, when the uplink channel interference condition is greater than or equal to the first interference threshold, and the uplink data transmission condition satisfies the third data transmission threshold, determine to lower the power control TPC.

In an example, the network device also needs to receive the service information sent by the terminal, and determine the accuracy of data transmission in the uplink service communication. For the implementation process thereof, reference may be made to the implementation process of S301, which will not be repeated here.

In an example, the uplink data transmission condition satisfies the third data transmission threshold, and the BLER may be used to characterize the uplink data transmission condition. In this case, it is determined whether the BLER is less than or equal to the third BLER threshold. In one example, the third BLER threshold may be 5%. Or in another example, the throughput is used to characterize the uplink data transmission, and at this time, it is determined whether the throughput is greater than or equal to the third throughput threshold. It is understandable that when the value of BLER is smaller, it indicates that there are fewer erroneous data in the data transmission process; and when the throughput value is higher, it indicates that in the process of data transmission, more data is transmitted correctly, that is, errors. Less data is transferred.

For the determination that the channel interference condition is greater than or equal to the first interference threshold, reference may be made to the description of the corresponding part in S302, which will not be repeated here.

In another example, in order to reduce the channel and block error rate (or throughput) at the same time, it may be a short-lived situation due to some factors. Therefore, the network device may also determine that the channel interference condition is greater than or equal to the first interference threshold, and the uplink data transmission condition satisfies the duration of the second data transmission threshold. When the duration is greater than or equal to the second duration threshold, the network device considers that the communication environment with low interference and low block error rate is not temporarily generated, and can further determine that the power control TPC is lowered to save energy.

Through S502, the network device may determine that the communication environment of the current communication channel is a situation of low interference and low block error rate. Then, the network device determines the TPC for lowering the transmit power of the terminal, that is, lowering the power control TPC. Wherein, for the specific description about the lowering of the power control TPC, reference may be made to the corresponding part in S303, and details are not repeated here.

S503, the terminal receives the down-regulation power control TPC sent by the network device.

It can be understood that the implementation process of S503 is the same as a part of the implementation process of S303, and for details, reference may be made to the description of S303, which will not be repeated here.

In an example, under normal circumstances, the adjustment of the transmit power does not just need to be adjusted once, but multiple adjustments can be made between the terminal and the network device. Therefore, after S503, the steps of S501 to S503, that is, S501' to S503' in Fig. 5, can be repeatedly performed, that is, the dotted lines are shown. Until the terminal adjusts the transmit power to the preset target, the network device detects that the channel interference of the current communication channel is small and the erroneous data in the uplink data transmission process is also within the preset range, then the transmit power of the terminal can no longer be adjusted. .

It can be understood that, under normal circumstances, the first block error rate threshold involved in FIG. 3 is greater than the third block error rate threshold involved in FIG. 5 ; and, the first throughput threshold involved in FIG. 3 is smaller than that in FIG. 5 . The third throughput threshold involved in . In other words, the purpose of the scheme involved in FIG. 5 is to control the transmit power within a certain range, so that the actually detected block error rate is located in the interval (third block error rate threshold, first block error rate threshold) , or the actually detected throughput is in the (first throughput threshold, third throughput threshold) interval. So that the terminal can continue to dynamically adjust the power to the expected target under the condition of good channel conditions, and can balance the CRC error and power saving. Of course, in some special cases, the first block error rate threshold and the third block error rate threshold may be the same, and the first throughput threshold and the third throughput threshold may be the same.

Of course, in some examples, if a retransmission policy is configured for the service communication between the terminal and the network device, the block error rate will increase or the throughput will decrease due to reducing the transmit power. Therefore, if the retransmission policy is configured, the network device may usually instruct the terminal to perform retransmission, thereby ensuring that the network device receives more correct data packets. However, since the terminal performs retransmission, power consumption and resource waste are increased. Therefore, the power and resources saved by reducing the transmit power will be offset, and may even cause more power consumption and resource consumption. Therefore, the number of retransmissions can be fixed to 0 or 1, thereby reducing multiple retransmissions due to increased block error rate or decreased throughput, reducing resource consumption and saving power.

FIG. 6 is a schematic diagram of still another power control interaction provided by an embodiment of the present application.

Based on the scenario shown in FIG. 5 , the terminal can demodulate the downlink service information in the downlink channel, and determine corresponding response information for each group of data blocks. The network device can adjust the transmit power of the network device according to the response information determined by the terminal. For details, refer to the interaction diagram shown in FIG. 6 , and the interaction mode may include the following steps:

S601, demodulate downlink service information to determine response information.

S602, reporting response information.

S603, according to the response information, determine the downlink service information transmission situation.

S604, reporting the downlink channel interference situation.

It can be understood that the implementation process of S601 to S604 is the same as the implementation process of S401 to S403. For details, please refer to the description of the corresponding part in S401 to S403, which will not be repeated here. Although the number of steps in the interaction diagram is not completely consistent, it is understandable that the corresponding processes in execution can be corresponding.

S605, when the downlink channel interference condition is greater than or equal to the first interference threshold, and the downlink data transmission condition satisfies the fourth data transmission threshold, reduce the transmit power of the network device.

In one example, the transmission of downlink service information is determined, for example, if BLER is used to characterize the transmission of downlink service information, it is determined whether the BLER is less than or equal to the fourth BLER threshold; if throughput is used to characterize the transmission of downlink service information In this case, it is determined whether the throughput is greater than or equal to the fourth throughput threshold. For the determination that the channel interference condition is greater than or equal to the first interference threshold, reference may be made to the description of the corresponding part in S404, which will not be repeated here.

Therefore, it can be understood that the network device determines that the communication environment of the current communication channel is a situation of low interference and low block error rate (or high throughput) through S605, and reduces the transmit power of the network device.

In another example, under normal circumstances, the adjustment of the transmit power of the network device is not suitable for one-time adjustment. Network equipment can be adjusted multiple times. Therefore, after S605, the steps of S601 to S605, that is, S601' to S605' in FIG. 6, can be repeatedly performed, that is, the dotted lines are shown. Until the network device adjusts the transmission power of the network device to the preset target, the network device detects that the channel interference of the current communication channel is small, and the erroneous data in the downlink data transmission process fed back by the terminal is within the preset range, then The transmit power of the network device can no longer be adjusted.

Through the above Figures 5 and 6, the terminal near the network equipment is covered by the near point. In the high-order modulation mode, when the communication channel interference is small and the block error rate and throughput are also good, the terminal and the network equipment can reduce the transmission rate. power, so as to achieve the effect of saving energy and electricity. Reduce the waste of resources caused by excessive Falun Gong.

FIG. 7 is a schematic diagram of a power control apparatus according to an embodiment of the present application.

The present application provides a power control apparatus 700. The apparatus 700 is a network device, and the network device uses a modulation order greater than or equal to 256 quadrature amplitude modulation QAM mode to perform services on a communication channel between a terminal and the network device For communication, the apparatus 700 includes: a receiving module 701 , a processing module 702 and a sending module 703 .

The receiving module 701 is used for receiving service information from the terminal. The processing module 702 is configured to determine the accuracy level of data transmission in the uplink service communication. The receiving module 701 is further configured to receive uplink interference situation information from the terminal, where the uplink interference situation information is used to indicate the interference situation level of the uplink communication channel. The processing module 702 is further configured to control the sending module when it is determined that the accuracy level of data transmission in the uplink service communication is not higher than the first accuracy level threshold, and the interference level of the uplink communication channel is not higher than the first interference level threshold. 703 Send a power control command for reducing the transmit power of the terminal to the terminal.

In a possible implementation manner, the processing module 702 is further configured to: determine that the block error rate in the uplink service communication is greater than or equal to the first block error rate threshold; or determine that the throughput in the uplink service communication is less than or equal to the first throughput volume threshold.

In a possible implementation manner, the processing module 702 is further configured to: determine that the uplink signal-to-interference and noise ratio (SINR) is greater than or equal to the first SINR threshold; or determine that the uplink signal-to-noise ratio (SNR) is greater than or equal to the first SNR threshold; or determine that the uplink signal-to-noise ratio (SINR) is greater than or equal to the first SNR threshold. The interference ratio SIR is greater than or equal to the first SIR threshold; or determine that the uplink reference signal reception quality RSRQ is greater than or equal to the first RSRQ threshold; or determine that the uplink received signal strength indicator RSSI is less than or equal to the first RSSI threshold.

In a possible implementation manner, the processing module 702 is further configured to: when it is determined that the accuracy level of data transmission in the uplink service communication is not higher than the first accuracy level threshold, and the interference level of the uplink communication channel is not higher than the first accuracy level threshold When the interference level threshold is set and the first duration is not less than the first duration threshold, the sending module is controlled to send a power control command for reducing the transmit power of the terminal to the terminal.

In a possible implementation manner, the receiving module 701 is further configured to receive response information from the terminal. The processing module 702 is further configured to determine the accuracy level of data transmission in the downlink service communication according to the response information. The receiving module 701 is further configured to receive downlink interference situation information from the terminal, where the downlink interference situation information is used to indicate the interference situation level of the downlink communication channel. The processing module 702 is further configured to, when it is determined that the accuracy level of data transmission in the downlink service communication is not higher than the second accuracy level threshold, and the interference level of the downlink communication channel is not higher than the second interference level threshold, reduce the network equipment transmit power.

In a possible implementation manner, the processing module 702 is further configured to: determine that the block error rate in the downlink service communication is greater than or equal to the second block error rate threshold; or determine that the throughput in the downlink service communication is less than or equal to the second throughput volume threshold.

In a possible implementation manner, the processing module 702 is further configured to: determine that the downlink SINR is greater than or equal to the second SINR threshold; or determine that the downlink SNR is greater than or equal to the second SNR threshold; or determine that the downlink SIR is greater than or equal to the second SIR threshold ; or determine that the downlink RSRQ is greater than or equal to the second RSRQ threshold; or determine that the downlink RSSI is less than or equal to the second RSSI threshold.

In a possible implementation manner, the processing module 702 is further configured to: when it is determined that the accuracy level of data transmission in the downlink service communication is not higher than the second accuracy level threshold, and the interference level of the downlink communication channel is not higher than the second accuracy level threshold When the interference level threshold is set and the second duration is not lower than the second duration threshold, the transmit power of the network device is reduced.

In a possible implementation manner, the processing module 702 is further configured to set the number of retransmissions to 0 or 1 if a retransmission policy is set for the sending of the uplink service information or the downlink service information.

In a possible implementation manner, the sending module 703 is further configured to send a power control command word to the terminal, where the power control command word is used to reduce the transmit power of the terminal.

FIG. 8 is a schematic structural diagram of a terminal or a network device according to an embodiment of the present application.

As shown in FIG. 8 , the present application provides a terminal or network device 800 , and the terminal or network device 800 may include a processor 801 . Optionally, it includes a memory 802 , an interface circuit 803 and a bus 804 . The processor 801 , the memory 802 , and the interface circuit 803 in the terminal or the network device 800 can establish a communication connection through the bus 804 . The interface circuit 803 is used for sending information and receiving external information.

In one example, the interface circuit 803 may include an antenna and or a modem.

The processor 801 may be a CPU.

Memory 802 may include volatile memory (volatile memory), such as random-access memory (RAM); memory 802 may also include non-volatile memory (non-volatile memory), such as read-only memory (read only memory) -only memory, ROM), flash memory, hard disk drive (HDD) or solid state drive (solid state drive, SSD); the memory 802 may also include a combination of the above-mentioned types of memory.

The processor 801 is used for coupling with the memory 802, and reading and executing the instructions in the memory 802; when the processor 801 is running, the instructions are executed, so that the processor 801 is also used for executing the above-mentioned methods of the terminal in FIG. 3 to FIG. 6 or method for network devices.

The present application also relates to a power control communication system, which may include the terminal involved in FIG. 8 and the network device involved in FIG. 8 , for implementing any of the methods shown in FIG. 3 to FIG. 6 above.

The present application provides a power control method, device and communication system. A communication channel is established between the terminal and the network device, and a modulation mode greater than or equal to 256QAM is used for service communication between the terminal and the network device. When the block error rate of data transmitted in the uplink channel or downlink channel is high or the throughput is poor, it is also necessary to determine the interference degree of the communication channel. In the mode, the block error rate or throughput continues to deteriorate due to increasing the transmit power. At the same time, for low block error rate (or high throughput), when the transmit power is stable and the communication channel is good, the transmit power can be reduced to further save energy. And if a retransmission policy is set, retransmission can be prohibited or only allowed to be retransmitted once, thereby reducing the higher power consumption and resource consumption caused by multiple retransmissions. The above methods can effectively improve business quality, enhance product competitiveness and enhance customer experience.

Those skilled in the art should realize that, in one or more of the above examples, the functions described in the embodiments of the present application may be implemented by hardware, software, firmware, or any combination thereof. When implemented in software, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage medium can be any available medium that can be accessed by a general purpose or special purpose computer.

The steps of a method or algorithm described in connection with the embodiments disclosed herein may be implemented in hardware, a software module executed by a processor, or a combination of the two. A software module can be placed in random access memory (RAM), internal memory, read only memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, removable disk, CD-ROM, or any other in the technical field. in any other known form of storage medium.

The specific embodiments described above further describe the purpose, technical solutions and beneficial effects of the present application in detail. It should be understood that the above descriptions are only specific embodiments of the present application and are not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made on the basis of the technical solution of this application shall be included within the protection scope of this application.

Claims

A power control method, characterized in that the method is applied to a network device, and the network device adopts a mode with a modulation order greater than or equal to 256 quadrature amplitude modulation QAM on a communication channel between the network device and a terminal communicating, the method includes:

receiving service information from the terminal;

Determine the accuracy level of data transmission in uplink service communication;

receiving uplink interference situation information from the terminal, where the uplink interference situation information is used to indicate an interference situation level of an uplink communication channel;

When the network device determines that the accuracy level of data transmission in the uplink service communication is not higher than the first accuracy level threshold, and the interference level of the uplink communication channel is not higher than the first interference level threshold The terminal sends a power control command for reducing the transmit power of the terminal.
The method according to claim 1, wherein the accuracy level of data transmission in the uplink service communication is not higher than the first accuracy level threshold, comprising:

The block error rate in the uplink traffic communication is greater than or equal to the first block error rate threshold; or

The throughput in the uplink traffic communication is less than or equal to the first throughput threshold.
The method according to claim 1 or 2, wherein the interference level of the uplink communication channel is not higher than the first interference level threshold, comprising:

The uplink signal-to-interference and noise ratio SINR is greater than or equal to the first SINR threshold; or

The uplink signal-to-noise ratio SNR is greater than or equal to the first SNR threshold; or

The uplink signal-to-interference ratio SIR is greater than or equal to the first SIR threshold; or

The uplink reference signal reception quality RSRQ is greater than or equal to the first RSRQ threshold; or

The uplink received signal strength indication RSSI is less than or equal to the first RSSI threshold.
The method according to any one of claims 1-3, wherein when the network device determines that the accuracy level of data transmission in the uplink service communication is not higher than a first accuracy level threshold, and the When the interference level of the uplink communication channel is not higher than the first interference level threshold, sending a power control command for reducing the transmit power of the terminal to the terminal, including:

When the network device determines that the accuracy level of data transmission in the uplink service communication is not higher than the first accuracy level threshold, the interference level of the uplink communication channel is not higher than the first interference level threshold, and the first continuous When the duration is not less than the first duration threshold, a power control command for reducing the transmit power of the terminal is sent to the terminal.
The method according to any one of claims 1-4, wherein the method further comprises:

receiving response information from the terminal;

Determine the accuracy level of data transmission in downlink service communication according to the response information;

receiving downlink interference situation information from the terminal, where the downlink interference situation information is used to indicate an interference situation level of a downlink communication channel;

When the network device determines that the accuracy level of data transmission in the downlink service communication is not higher than the second accuracy level threshold, and the interference level of the downlink communication channel is not higher than the second interference level threshold, it reduces the the transmit power of the network device.
The method according to claim 5, wherein the accuracy level of data transmission in the downlink service communication is not higher than the second accuracy level threshold comprising:

The block error rate in downlink traffic communication is greater than or equal to the second block error rate threshold; or

The throughput in the downlink traffic communication is less than or equal to the second throughput threshold.
The method according to claim 5 or 6, wherein the interference level of the downlink communication channel is not higher than the second interference level threshold, comprising:

The downlink SINR is greater than or equal to the second SINR threshold; or

The downlink SNR is greater than or equal to the second SNR threshold; or

The downlink SIR is greater than or equal to the second SIR threshold; or

The downlink RSRQ is greater than or equal to the second RSRQ threshold; or

The downlink RSSI is less than or equal to the second RSSI threshold.
The method according to any one of claims 5-7, wherein when the network device determines that the accuracy level of data transmission in the downlink service communication is not higher than a second accuracy level threshold, and the When the interference level of the downlink communication channel is not higher than the second interference level threshold, reducing the transmit power of the network device, including:

When the network device determines that the accuracy level of data transmission in the downlink service communication is not higher than the second accuracy level threshold, the interference level of the downlink communication channel is not higher than the second interference level threshold, and the second continuous When the duration is not less than the second duration threshold, the transmit power of the network device is reduced.
The method according to any one of claims 1-8, wherein if a retransmission policy is set for the sending of the uplink service information or the downlink service information, the number of retransmissions is set to 0 or 1 .
The method according to any one of claims 1-9, wherein the sending a power control command for reducing the transmit power of the terminal to the terminal comprises:

A power control command word is sent to the terminal, where the power control command word is used to reduce the transmit power of the terminal.
The method according to claim 10, wherein the power control command word comprises: accumulation type or absolute type.
A power control device, characterized in that the device is a network device, and the network device uses a modulation order greater than or equal to 256 quadrature amplitude modulation QAM mode on the communication channel between the terminal and the network device. business communication, the device includes:

a receiving module for receiving service information from the terminal;

a processing module, used to determine the accuracy level of data transmission in the uplink service communication;

The receiving module is further configured to receive uplink interference situation information from the terminal, where the uplink interference situation information is used to indicate an interference situation level of an uplink communication channel;

The processing module is further configured to, when it is determined that the accuracy level of data transmission in the uplink service communication is not higher than the first accuracy level threshold, and the interference level of the uplink communication channel is not higher than the first interference level threshold At the time, the control sending module sends a power control command for reducing the transmit power of the terminal to the terminal.
The apparatus according to claim 12, wherein the processing module is further configured to:

determine that the block error rate in the uplink traffic communication is greater than or equal to the first block error rate threshold; or

It is determined that the throughput in the uplink traffic communication is less than or equal to the first throughput threshold.
The device according to claim 12 or 13, wherein the processing module is further configured to:

determine that the uplink signal-to-interference and noise ratio SINR is greater than or equal to the first SINR threshold; or

determine that the uplink signal-to-noise ratio SNR is greater than or equal to the first SNR threshold; or

determine that the uplink signal-to-interference ratio SIR is greater than or equal to the first SIR threshold; or

determine that the uplink reference signal reception quality RSRQ is greater than or equal to the first RSRQ threshold; or

It is determined that the RSSI of the uplink received signal strength indicator is less than or equal to the first RSSI threshold.
The device according to any one of claims 12-14, wherein the processing module is further configured to:

When it is determined that the accuracy level of data transmission in the uplink service communication is not higher than the first accuracy level threshold, the interference level of the uplink communication channel is not higher than the first interference level threshold, and the first duration is not lower than When the first duration threshold is set, the sending module is controlled to send a power control command for reducing the transmit power of the terminal to the terminal.
The device according to any one of claims 12-15, characterized in that,

The receiving module is further configured to receive response information from the terminal;

The processing module is further configured to determine the accuracy level of data transmission in downlink service communication according to the response information;

The receiving module is further configured to receive downlink interference situation information from the terminal, where the downlink interference situation information is used to indicate an interference situation level of a downlink communication channel;

The processing module is further configured to, when it is determined that the accuracy level of data transmission in the downlink service communication is not higher than the second accuracy level threshold, and the interference level of the downlink communication channel is not higher than the second interference level threshold , reduce the transmit power of the network device.
The apparatus according to claim 16, wherein the processing module is further configured to:

determining that the block error rate in the downlink traffic communication is greater than or equal to a second block error rate threshold; or

It is determined that the throughput in the downlink traffic communication is less than or equal to the second throughput threshold.
The device according to claim 16 or 17, wherein the processing module is further configured to:

determine that the downlink SINR is greater than or equal to the second SINR threshold; or

determine that the downlink SNR is greater than or equal to a second SNR threshold; or

determine that the downlink SIR is greater than or equal to a second SIR threshold; or

determine that the downlink RSRQ is greater than or equal to the second RSRQ threshold; or

It is determined that the downlink RSSI is less than or equal to the second RSSI threshold.
The device according to any one of claims 16-18, wherein the processing module is further configured to:

When it is determined that the accuracy level of data transmission in the downlink service communication is not higher than the second accuracy level threshold, the interference level of the downlink communication channel is not higher than the second interference level threshold, and the second duration is not lower than When the second duration threshold is reached, the transmit power of the network device is reduced.
The device according to any one of claims 12-19, wherein the processing module is further configured to, if a retransmission policy is set for the sending of the uplink service information or the downlink service information, retransmit The number of times is set to 0 or 1.
The method according to any one of claims 12-20, wherein the sending module is further configured to send a power control command word to the terminal, where the power control command word is used to reduce the transmission of the terminal power.
The device according to claim 21, wherein the power control command word comprises: accumulation type or absolute type.
A communication device, characterized in that it comprises: at least one processor and an interface circuit, and a related computer program is executed in the at least one processor, so that the communication device executes any one of claims 1-11 Methods.
A computer program product comprising related program instructions which, when executed, implement the method as claimed in any one of claims 1 to 11.