CN113207165A

CN113207165A - Power control method, terminal equipment, network equipment and storage medium

Info

Publication number: CN113207165A
Application number: CN202110425659.1A
Authority: CN
Inventors: 陈智颖
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2021-04-20
Filing date: 2021-04-20
Publication date: 2021-08-03
Anticipated expiration: 2041-04-20
Also published as: CN113207165B; WO2022222633A1

Abstract

The embodiment of the application discloses a power control method, terminal equipment, network equipment and a storage medium, which are applied to the terminal equipment, wherein the method comprises the following steps: determining the receiving condition of Downlink Control Information (DCI) of the terminal equipment; determining a transmission power control command according to the DCI receiving condition; wherein, the transmission power control command is used for instructing the network equipment to adjust the transmission power of the physical downlink control channel; sending Uplink Control Information (UCI) to a network device, wherein the UCI comprises: the power control commands are transmitted. Therefore, because the UCI format is added to send the transmission power control command, and the transmission power control command is determined based on the DCI receiving condition sensed by the terminal equipment, the low-rate debug problem can be rapidly solved and the transmission power of the PDCCH can be accurately controlled under the condition of not increasing the system complexity.

Description

Power control method, terminal equipment, network equipment and storage medium

Technical Field

The present application relates to the field of communications technologies, and in particular, to a power control method, a terminal device, a network device, and a storage medium.

Background

With the development of mobile communication technology, in the fourth Generation (4G) mobile communication network and even the 5th Generation (5G) mobile communication network, the Medium Access Control (MAC) layer currently adopts a Downlink Control Information (DCI) scheduling method. The network side firstly notifies a User Equipment (UE) that a Physical Downlink Shared Channel (PDSCH) packet belonging to the UE is transmitted, so that the UE parses a subsequent PDSCH packet after receiving DCI belonging to the UE.

However, in the current data transmission, for the UE, it is only considered whether the PDSCH data packet is analyzed incorrectly, and cannot sense whether the DCI is lost, which brings great inconvenience to the problem of low-rate debugging (debug); especially, after the DCI is lost, at this time, the UE cannot determine whether the network side has scheduling, and cannot request the network side to increase downlink transmit power through closed-loop power control.

Disclosure of Invention

The application provides a power control method, a terminal device, a network device and a storage medium, which can not only rapidly solve the problem of low-rate debug, but also accurately control the transmitting power of a physical downlink control channel without increasing the complexity of a system.

In order to achieve the purpose, the technical scheme of the application is realized as follows:

in a first aspect, an embodiment of the present application provides a power control method, which is applied to a terminal device, and the method includes:

determining the receiving condition of Downlink Control Information (DCI) of the terminal equipment;

determining a transmission power control command according to the DCI receiving condition; the transmission power control command is used for instructing the network equipment to adjust the transmission power of the physical downlink control channel;

sending Uplink Control Information (UCI) to the network equipment, wherein the UCI comprises: the transmission power control command.

In a second aspect, an embodiment of the present application provides a power control method, which is applied to a network device, and the method includes:

transmitting DCI to the terminal equipment;

receiving UCI returned by the terminal equipment, wherein the UCI comprises: transmitting a power control command;

and adjusting the transmitting power of the physical downlink control channel according to the transmission power control command.

In a third aspect, an embodiment of the present application provides a terminal device, where the terminal device includes a first receiving unit, a first determining unit, and a first sending unit; wherein,

a first receiving unit configured to determine a DCI receiving situation of a terminal device;

a first determining unit configured to determine a transmission power control command according to the DCI receiving situation; the transmission power control command is used for instructing the network equipment to adjust the transmission power of the physical downlink control channel;

a first sending unit configured to send UCI to the network device, the UCI including: the transmission power control command.

In a fourth aspect, an embodiment of the present application provides a terminal device, where the terminal device includes a first memory and a first processor; wherein,

a first memory for storing a computer program operable on the first processor;

a first processor for performing the method according to the first aspect when running the computer program.

In a fifth aspect, an embodiment of the present application provides a network device, where the network device includes a second transmitting unit, a second receiving unit, and a power control unit; wherein,

a second transmitting unit configured to transmit the DCI to the terminal device;

a second receiving unit, configured to receive UCI returned by the terminal device, where the UCI includes: transmitting a power control command;

and the power control unit is configured to adjust the transmitting power of the physical downlink control channel according to the transmission power control command.

In a sixth aspect, an embodiment of the present application provides a network device, where the network device includes a second memory and a second processor; wherein,

a second memory for storing a computer program operable on the second processor;

a second processor for performing the method according to the second aspect when running the computer program.

In a seventh aspect, the present application provides a computer storage medium storing a computer program, where the computer program implements the method according to the first aspect when executed by a first processor or implements the method according to the second aspect when executed by a second processor.

In the power control method, the terminal device, the network device and the storage medium provided by the embodiment of the application, at the terminal device side, the receiving condition of the downlink control information DCI of the terminal device is determined; determining a transmission power control command according to the DCI receiving condition, wherein the transmission power control command is used for instructing network equipment to adjust the transmission power of a physical downlink control channel; sending Uplink Control Information (UCI) to a network device, wherein the UCI comprises: the power control commands are transmitted. At the network equipment side, DCI is sent to the terminal equipment; receiving UCI returned by the terminal equipment; and adjusting the transmitting power of the physical downlink control channel according to the transmission power control command included in the UCI. Therefore, because the UCI format is added to send the transmission power control command, and the transmission power control command is determined based on the DCI receiving condition sensed by the terminal equipment, the method can not only quickly solve the low-rate debug problem, but also accurately control the transmitting power of the physical downlink control channel under the condition of not increasing the system complexity, and further reduce the DCI loss rate.

Drawings

Fig. 1 is a schematic architecture diagram of a wireless communication system according to an embodiment of the present application;

fig. 2 is a schematic flowchart of a power control method according to an embodiment of the present disclosure;

fig. 3 is a schematic flowchart of another power control method according to an embodiment of the present disclosure;

fig. 4 is a schematic flowchart of another power control method according to an embodiment of the present application;

fig. 5 is a detailed flowchart of a power control method according to an embodiment of the present disclosure;

fig. 6 is a schematic structural diagram of a terminal device according to an embodiment of the present disclosure;

fig. 7 is a schematic diagram of a specific hardware structure of a terminal device according to an embodiment of the present disclosure;

fig. 8 is a schematic structural diagram of a network device according to an embodiment of the present application;

fig. 9 is a schematic diagram of a specific hardware structure of a network device according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant application and are not limiting of the application. It should be noted that, for the convenience of description, only the parts related to the related applications are shown in the drawings.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing embodiments of the present application only and is not intended to be limiting of the application.

In the following description, reference is made to "some embodiments" which describe a subset of all possible embodiments, but it is understood that "some embodiments" may be the same subset or different subsets of all possible embodiments, and may be combined with each other without conflict. It should also be noted that the terms "first \ second \ third" are used herein only for distinguishing similar objects and do not denote a particular order or importance, and it should be understood that "first \ second \ third" may be interchanged under certain circumstances or sequences, so that embodiments of the present application described herein may be implemented in other than those illustrated or described herein.

Illustratively, fig. 1 shows an architecture diagram of a wireless communication system to which the technical solution of the embodiment of the present application can be applied. The wireless communication system is not limited to a Long Term Evolution (LTE) system, a fourth Generation mobile communication (4G) system, a fifth Generation mobile communication (5G) system, a new air interface (NR) system, or a communication system of a subsequent Evolution. As shown in fig. 1, the wireless communication system 100 may include: network device 101 and terminal device 102, and terminal device 102 and network device 101 are connected in communication through a wireless network.

It should be noted that the number of the network devices 101 may be 1 or more, and the number of the terminal devices 102 may be 1 or more.

Here, the network device 101 may be a Base Transceiver Station (BTS) in a Time Division Synchronous code Division Multiple Access (TD-SCDMA) system, an evolved Node B (eNB) in an LTE system, and a Base Station in a 5G system and a New Radio (NR) system. In addition, the network device 101 may also be an Access Point (AP), a transmission node (Trans TRP), a Central Unit (CU), or other network entities, and may include some or all of the functions of the above network entities.

The terminal devices 102 may be distributed throughout the wireless communication system 100 and may be stationary or mobile. In some embodiments of the present application, the terminal device 102 may be a smart phone, a laptop computer, a User Equipment (UE), a mobile device, a mobile station (mobile station), a mobile unit (mobile unit), an M2M terminal, a wireless unit, a remote unit, a mobile client, and so on.

In this way, the network device 101 can communicate with the terminal device 102 through the wireless network. Specifically, the network device 101 may send downlink information to the terminal device 102, and the terminal device 102 may send uplink information to the network device 101, so as to perform interactive communication.

It should be further noted that the wireless communication system shown in fig. 1 is only for more clearly illustrating the technical solution of the present application, and does not constitute a limitation to the present application, and as a person having ordinary skill in the art knows, the technical solution provided in the present application is also applicable to similar technical problems as the network architecture evolves and new service scenarios emerge.

It can be understood that, in the related art, the MAC layer of the 4G/5G communication network currently adopts a Downlink Control Information (DCI) scheduling manner. Specifically, the network device may notify the terminal device that a Physical Downlink Shared Channel (PDSCH) packet belonging to the terminal device is about to be transmitted, and after receiving the DCI belonging to the terminal device, the terminal device parses the PDSCH packet at the next time. If the PDSCH data packet is analyzed correctly, namely Cyclic Redundancy Check (CRC) is verified to be passed, the terminal equipment returns an Acknowledgement Character (ACK) to the network equipment to indicate that the received data is correct; otherwise, a Negative acknowledgement Character (NACK, or NAK for short) is returned to the network device, indicating that the received data is incorrect, such as a check error, a packet size error, and the like. And finally, the terminal equipment can count the Block Error Rate (BLER) through NACK/(ACK + NACK).

However, the above-described DCI scheduling mechanism has a drawback for the terminal device. In weak signals, if a 5G/4G network scenario is used, DCI loss may cause a rate drop of a terminal device, but a problem may not be confirmed at all if Log (Log) analysis is performed unilaterally from the terminal device. The reason is that PDSCH parsing errors can be counted, but the missing terminal device of DCI cannot perceive them. For example, the network device transmits DCI 10 times, and the terminal device receives only one DCI, and correctly parses the subsequent PDSCH packet. At this time, the BLER statistic for the terminal device would be 0%. But the statistics of the network devices are 90%. That is to say, similar problems cannot be seen by analyzing only the Log of the terminal device, and the Log of the network device side and the Log of the terminal device side cannot be analyzed simultaneously in most scenarios, which brings great inconvenience to the debug problem of low rate.

In addition, it is assumed that the terminal device loses DCI and cannot sense whether the network device has scheduling, and the network device side may sense Discontinuous Transmission (DTX) generated by not receiving ACK/NACK after scheduling. Thus, uplink and downlink power control can be performed through the statistical DTX. The problem is that when the network equipment side generates DTX, there are two situations: in one case, the terminal device does not receive DCI and does not reply ACK/NACK, and at this time, the transmission power of a Physical Downlink Control Channel (PDCCH) should be increased; in another case, the terminal device receives the DCI and the PDSCH data packet, but Uplink Control Information (UCI) for feeding back ACK/NACK is lost, and at this time, the transmission power of a Physical Uplink Control Channel (PUCCH) should be increased. In the current mechanism, the network device cannot distinguish the two situations, and thus cannot perform targeted power control adjustment. That is, if the terminal device loses DCI and cannot perceive whether the network device has scheduling, the terminal device cannot request the network device to increase downlink transmit power through closed-loop power control.

Based on this, an embodiment of the present application provides a power control method, which is applied to a terminal device, and the basic idea of the method is: determining the receiving condition of Downlink Control Information (DCI) of the terminal equipment; determining a transmission power control command according to the DCI receiving condition; wherein, the transmission power control command is used for instructing the network equipment to adjust the transmission power of the physical downlink control channel; sending Uplink Control Information (UCI) to network equipment, wherein the UCI comprises: the transmission power control command.

The embodiment of the present application further provides a power control method, which is applied to a network device, and the basic idea of the method is: transmitting DCI to the terminal equipment; receiving UCI returned by terminal equipment, wherein the UCI comprises: transmitting a power control command; and adjusting the transmitting power of the physical downlink control channel according to the transmission power control command.

Therefore, because the UCI format is added to send the transmission power control command, and the transmission power control command is determined based on the DCI receiving condition sensed by the terminal equipment, the method can not only quickly solve the low-rate debug problem, but also accurately control the transmitting power of the physical downlink control channel under the condition of not increasing the system complexity, and further reduce the DCI loss rate.

Embodiments of the present application will be described in detail below with reference to the accompanying drawings.

In an embodiment of the present application, referring to fig. 2, a flowchart of a power control method provided in an embodiment of the present application is shown. As shown in fig. 2, the method may include:

s201: and determining the DCI receiving condition of the terminal equipment.

It should be noted that the method in the embodiment of the present application is applied to a terminal device. Here, for a wireless communication system, in the process of data transceiving between a network device and a terminal device, a DCI scheduling manner is usually adopted, the network device transmits DCI to notify the terminal device of transmission of a data packet belonging to the network device, and in order to accurately determine whether the terminal device loses the data packet, the embodiment of the present application requires that the terminal device can sense whether the DCI is lost, that is, needs to determine a DCI receiving situation of the terminal device.

It should be further noted that the DCI is carried by a Physical Downlink Control Channel (PDCCH), and includes resource allocation and other Control information on one or more terminal devices. Here, the information carried by the DCI may include several contents, such as resource allocation information, a modulation scheme, Hybrid Automatic Repeat reQuest (HARQ) information, and the like. The terminal equipment can correctly process the PDSCH data packet only after correctly resolving the DCI information.

In this embodiment of the present application, the DCI may use a Radio Network Temporary Identifier (RNTI) to transmit downlink control information of one or more cells; subsequent encoding steps include information unit multiplexing, CRC attachment, channel coding and rate adaptation.

The Format 1_0 is used for scheduling the PDSCH of the Cell, and the CRC may be scrambled by a Cell-Radio Network Temporary Identifier (C-RNTI). In the current protocol, when CRC is scrambled by C-RNTI, field information included in a DCI Format (Format 1_0) of PDCCH transmission is as shown in table 1. In table 1, some english abbreviations are illustrated as follows: downlink (DL), Bandwidth subset (BWP), Resource Block (RB), Virtual Resource Block (VRB), Physical Resource Block (PRB), Radio Resource Control (RRC), Transmit Power Control (TPC), Physical Uplink Control Channel (PUCCH), Physical Uplink Shared Channel (PUSCH), Physical Downlink Control Channel (PDCCH), Physical Downlink Shared Channel (PDSCH).

TABLE 1

It should be noted that details of the contents and fields in table 1 are described in detail in the related protocols of the DCI format in the 5g (nr) communication protocol, such as the 38.211 protocol, the 38.212 protocol, the 38.214 protocol, and the like, and are not described in detail here.

In some embodiments, for S201, how to determine the DCI receiving situation of the terminal device, as specifically shown in fig. 3, the step may include:

s201-a: receiving DCI sent by the network equipment, wherein the DCI comprises information of first DCI times, and the first DCI times are the times of the network equipment scheduling the DCI of the terminal equipment in a preset time period.

It should be noted that, in order to enable the terminal device to sense whether the DCI is lost, the DCI described in the embodiment of the present application is to add a target field on the basis of the existing DCI (as shown in table 1), where the target field may be used to indicate the first DCI frequency, that is, the frequency of scheduling the DCI of the terminal device by the network device in the preset time period. In other words, in the embodiment of the present application, the DCI may include a target field with a preset length, and the target field is used to indicate the first DCI number.

Here, the preset length specifically refers to a number of bits (bits) occupied by the target field. The preset length may be set according to the first DCI frequency or according to a preset time period, and the preset length is related to a size of a preset slot (slot) or a preset subcarrier Space (SCS). In the embodiment of the present application, the number of bits of the preset length may be 10 bits or 11bits, and the value thereof is specifically set according to an actual situation, which is not limited herein.

In a specific example, if the first DCI number of times is 2000, the preset length is 11 bits; if the first DCI number of times is 1000, the preset length is 10 bits.

In another specific example, if the preset time period is 1 second and the preset time slot is 0.5 milliseconds, the preset length is 11 bits; if the preset time period is 0.5 seconds and the preset time slot is 0.5 milliseconds, the preset length is 10 bits.

In yet another specific example, if the preset time period is 1 second and the preset subcarrier spacing is 30kHz, the preset length is 11 bits; if the preset time period is 0.5 seconds and the preset subcarrier spacing is 30kHz, the preset length is 10 bits.

It should be noted that, within a 1 second time period, if the preset time slot is 0.5 ms, there may be 2000 slots, that is, scheduling may be performed 2000 times at most, in other words, the first DCI number of times supports 2000 at maximum, and at this time, the preset length needs 11 bits. Since 10 bits (power 10 of 2) can support 1024 at maximum, 11bits (power 11 of 2) can support 2048 at maximum; only a preset length of 11bits can support 2000 schedules.

It should be noted that the value of the preset subcarrier interval may be 15kHz, 30kHz, even 60kHz, 120kHz, 240kHz, or the like. Here, for a subcarrier interval of 15kHz, the corresponding preset time slot is 1 millisecond; for a subcarrier interval of 30kHz, the corresponding preset time slot is 0.5 millisecond; for a subcarrier interval of 60kHz, the corresponding preset time slot is 0.25 millisecond; for the subcarrier interval of 120kHz, the corresponding preset time slot is 0.125 milliseconds; for a subcarrier spacing of 240kHz, the corresponding predetermined time slot is 0.0625 milliseconds. That is, different preset subcarrier intervals have different preset time slots, and the different preset time slots cause different first DCI times within a preset time period, so that the number of bits of the preset length is also different. Therefore, the preset length of the target field is related not only to the first DCI number of times, but also to the size of a preset time period, a preset time slot, or a preset subcarrier spacing.

Further, after obtaining the preset length of the target field, the first DCI number may also be determined according to the target field. Specifically, in some embodiments, the method may further comprise:

acquiring a target field with a preset length in the DCI;

and determining the first DCI times according to the target field.

That is to say, after receiving the DCI sent by the network device, the terminal device may acquire a target field with a preset length from the DCI, and then may determine the first DCI frequency according to the target field. Illustratively, if the preset length is 11bits and the target field is 11111010000, it may be determined that the first DCI number is 2000.

S201-b: and determining a second DCI frequency, wherein the second DCI frequency is the frequency of actually receiving the scheduled DCI by the terminal equipment in a preset time period.

It should be noted that the terminal device further needs to count the number of actually received scheduled DCIs to determine the number of times of actually receiving the scheduled second DCI in the preset time period. Specifically, in some embodiments, the determining the second DCI number may include:

judging whether the received at least one DCI indicates to schedule the terminal equipment or not within a preset time period;

and counting the quantity of the DCI indicating the scheduling of the terminal equipment, and determining the number of times of actually receiving the scheduled second DCI in a preset time period.

In this embodiment of the present application, for a currently-used DCI scheduling manner, a terminal device may receive at least one DCI within a preset time period, and at this time, it is further required to determine whether the DCI is used for scheduling the terminal device. Only when the DCI is for scheduling the terminal device, the DCI is counted, and the received PDSCH data packet is parsed at the next time, so as to count the number of times that the second DCI actually received for scheduling in the preset time period is obtained.

In this way, after the first DCI frequency and the second DCI frequency are obtained, the DCI receiving situation of the terminal device may be analyzed, for example, whether DCI loss exists or not, a DCI loss rate, and the like.

S201-c: and determining the DCI receiving condition of the terminal equipment according to the first DCI times and the second DCI times.

It should be noted that, after acquiring the information of the first DCI frequency from the DCI, the terminal device may compare the first DCI frequency with the second DCI frequency actually received for scheduling, so as to determine the DCI receiving situation of the terminal device, so that the terminal device can quickly solve the low-rate debug problem.

In a possible implementation manner, the determining a DCI receiving situation of a terminal device according to the first DCI frequency and the second DCI frequency may include:

and determining whether the terminal equipment has DCI loss according to the first DCI times and the second DCI times.

Further, in some embodiments, the determining whether the terminal device has DCI loss according to the first DCI number and the second DCI number may include:

and if the first DCI times are greater than the second DCI times, determining that the terminal equipment has DCI loss.

It should be noted that, the first DCI frequency may be compared with the second DCI frequency, and if the first DCI frequency is equal to the second DCI frequency, it indicates that the terminal device does not have DCI loss; and if the first DCI times is greater than the second DCI times, indicating that the terminal equipment has DCI loss so as to determine the DCI receiving condition of the terminal equipment.

In another possible implementation, the determining the DCI receiving situation of the terminal device according to the first DCI frequency and the second DCI frequency may include:

and determining the DCI loss rate of the terminal equipment according to the first DCI times and the second DCI times.

Further, in some embodiments, the determining a DCI loss rate of the terminal device according to the first DCI number and the second DCI number may include:

calculating the difference between the first DCI times and the second DCI times;

and determining the DCI loss rate of the terminal equipment according to the ratio of the difference value to the first DCI times.

It should be noted that the DCI loss rate is obtained by calculating a ratio of the difference to the first DCI frequency after determining the difference between the first DCI frequency and the second DCI frequency. That is, according to the first DCI number and the second DCI number, a difference between the two may be calculated; and then according to the difference and the first DCI times, the DCI loss rate of the terminal equipment can be obtained so as to determine the DCI receiving condition of the terminal equipment.

In addition, only if the terminal device receives the DCI scheduling the terminal device, the terminal device parses the subsequent PDSCH data packet, and then returns the relevant information to the network device. Specifically, in some embodiments, after the DCI indicates to schedule the terminal device, the method may further include:

receiving a PDSCH data packet sent by network equipment;

analyzing the PDSCH data packet, and sending verification passing information to network equipment under the condition that the cyclic redundancy verification passes; and

and sending check failure information to the network equipment under the condition that the cyclic redundancy check fails.

In the embodiment of the present application, when the terminal device receives DCI for scheduling the terminal device, the terminal device may parse a subsequent PDSCH data packet at this time, and return an ACK message to the network device according to a parsing result under the condition that the CRC check passes; otherwise, under the condition that the CRC check is not passed, a NACK message is returned to the network equipment; then based on NACK/(ACK + NACK), BLER can be counted. Therefore, the terminal equipment can determine whether the DCI is lost or not, so that the terminal equipment can solve the problem of inaccurate packet error rate statistics caused by the fact that the terminal equipment cannot sense whether the DCI is lost or not in the related technology, and further quickly analyze and solve the low-rate debug problem.

Exemplarily, assuming that the preset time period is 1 second, the embodiment of the present application may represent that the network side schedules the first DCI number of the terminal device in the past one second (2000 slots) by adding a target field (for example, a field of 11 bits) with a preset length to the DCI; then, after receiving the information each time, the terminal equipment compares the information with the number of times of actually receiving the scheduled second DCI by the terminal equipment, and then the DCI loss rate can be counted. Here, the preset length (i.e., the number of bits) of the newly added field may be adjusted according to the actual size of the DCI number, and is illustratively 11 bits.

Therefore, after the DCI receiving condition of the terminal equipment is obtained, if the DCI of the terminal equipment is lost, the network equipment can be informed to optimize the power control, the DCI loss phenomenon of the terminal equipment can be improved, and the problems of packet error, packet loss and the like are even avoided. That is to say, when the terminal device has DCI loss, the reception of the subsequent PDSCH data packet is also affected at this time, which is likely to cause problems of packet error, packet loss, and the like, and at this time, the terminal device needs to notify the network device to adjust the transmission power.

S202: determining a transmission power control command according to the DCI receiving condition; the transmission power control command is used for instructing the network equipment to adjust the transmission power of the physical downlink control channel.

It should be noted that after determining the DCI reception situation, a Transmit Power Control (TPC) command may be determined according to whether the terminal device has DCI loss. The TPC command may indicate that the transmission power of the network device on a Physical Downlink Control Channel (PDCCH) is adjusted to a large value, or may indicate that the transmission power of the network device on the PDCCH is adjusted to a small value, which will be described below.

In a specific example, for S202, the determining a transmission power control command according to the DCI receiving situation may include:

when the DCI receiving condition indicates that the terminal equipment has DCI loss, determining that the transmission power control command is a first transmission power control command; or,

when the DCI receiving condition indicates that the terminal equipment has no DCI loss, determining that the transmission power control command is a second transmission power control command;

the first transmission power control command is used for instructing the network equipment to increase the transmission power of the physical downlink control channel, and the second transmission power control command is used for instructing the network equipment to decrease the transmission power of the physical downlink control channel.

It should be noted that, after the DCI receiving situation is determined, if the DCI receiving situation indicates that the terminal device has DCI loss, in order to avoid the DCI loss at this time, the transmit power of the physical downlink control channel needs to be increased, that is, the TPC command is the first transmit power control command; on the contrary, if the DCI receiving condition indicates that the terminal device does not have DCI loss, in order to save power consumption at this time, the transmit power of the physical downlink control channel may be reduced, that is, the TPC command is the second transmission power control command.

In another specific example, for S202, the determining a transmission power control command according to the DCI receiving condition may include:

when the DCI receiving condition indicates that the DCI loss rate of the terminal equipment is greater than a preset threshold value, determining that the transmission power control command is a first transmission power control command; or,

when the DCI receiving condition indicates that the DCI loss rate of the terminal equipment is less than or equal to a preset threshold value, determining that the transmission power control command is a second transmission power control command;

It should be noted that the preset threshold is a predetermined decision value for determining whether the DCI loss rate is too high. In the embodiment of the application, the preset threshold is set according to actual conditions. In a specific example, the preset threshold may be set to zero, but is not limited thereto.

It should be further noted that, after the DCI reception situation is determined, if the DCI loss rate is greater than the preset threshold, which means that the DCI loss rate is too high, in order to reduce the DCI loss rate at this time, the transmit power of the physical downlink control channel needs to be increased, that is, the TPC command is the first transmit power control command; on the contrary, if the DCI loss rate is less than or equal to the preset threshold, in order to save power consumption at this time, the transmit power of the physical downlink control channel may be reduced, that is, the TPC command is the second TPC command.

S203: transmitting UCI to network equipment; wherein, the UCI includes: the power control commands are transmitted.

It should be noted that after determining the transmission power control command, UCI may be sent to the network device, where the UCI carries information about the transmission power control command.

In the related art, the contents of UCI are as follows (same as LTE), and not all of them are carried by a single UCI. According to practical situations, sometimes only Channel State Information (CSI) is carried, sometimes only ACK/NACK is carried, sometimes only Scheduling Request (SR), sometimes CSI and ACK/NACK, etc. are carried.

·ACK/NACK

·Scheduling Request(SR)

·CSI

These three types described above may be combined in various ways and reported to the network device over the uplink physical channel: PUCCH or PUSCH. Possible combinations of these types are as follows:

i) HARQ-only ACK/NACK

ii)HARQ ACK/NACK+SR

iii) CSI only

iv)HARQ ACK/NACK+CSI

v)HARQ ACK/NACK+SR+CSI

In the embodiment of the present application, in addition to the three types of ACK/NACK, SR, and CSI, a UCI format is additionally added, that is, the UCI format is used for transmitting a transmission power control command, and the transmission power control command is determined according to the DCI receiving situation of the terminal device. Here, if in the UCI, the bit number of the transmission power control command is 1, that is, the first transmission power control command is carried at this time, which means that the network device is instructed to adjust the transmission power of the PDCCH to a large value, that is, to increase the transmission power of the PDCCH, usually by 1 dB. If the bit number of the transmission power control command in the UCI is 0, that is, the second transmission power control command is carried at this time, which means that the network device is instructed to adjust the transmission power of the PDCCH to a small value, that is, to reduce the transmission power of the PDCCH, usually by 1 dB.

It should be noted that the transmission power control command described in the embodiment of the present application is only to perform transmission power adjustment on a downlink control channel, and is not to perform transmission power adjustment on all downlink channels (e.g., a control channel, a data channel, etc.) simultaneously, so that accurate control of the transmission power of the PDCCH can be achieved.

The embodiment provides a power control method which is applied to terminal equipment. Determining the DCI receiving condition of the terminal equipment; determining a transmission power control command according to the DCI receiving condition; wherein, the transmission power control command is used for instructing the network equipment to adjust the transmission power of the physical downlink control channel; sending Uplink Control Information (UCI) to a network device, wherein the UCI comprises: the transmission power control command. Therefore, because the UCI format is added to send the transmission power control command, and the transmission power control command is determined based on the DCI receiving condition sensed by the terminal equipment, the method can not only quickly solve the low-rate debug problem, but also accurately control the transmitting power of the physical downlink control channel under the condition of not increasing the system complexity, and further reduce the DCI loss rate.

In another embodiment of the present application, referring to fig. 4, a flowchart of another power control method provided in the embodiment of the present application is shown. As shown in fig. 4, the method may include:

s401: and transmitting the DCI to the terminal equipment.

It should be noted that the method of the embodiment of the present application is applied to a network device. Here, for the wireless communication system, in the process of data transmission and reception between the network device and the terminal device, a DCI scheduling method is generally adopted, the network device transmits DCI to notify the terminal device that a data packet belonging to the network device is transmitted, and in order to accurately determine whether the terminal device loses the data packet, the terminal device needs to be able to determine a DCI receiving situation.

In some embodiments, before the network device sends the DCI to the terminal device, the method may further include: determining DCI; the DCI comprises information of a first DCI frequency, wherein the first DCI frequency is the frequency of the DCI of the network equipment for scheduling the terminal equipment in a preset time period.

That is, after determining the DCI, the network device then transmits the DCI to the terminal device. In this way, because the DCI includes the information of the first DCI frequency for the network device to schedule the terminal device within the preset time period, the terminal device can determine its DCI receiving condition according to the first DCI frequency.

In other words, in order to enable the terminal device to determine the DCI receiving situation, that is, to enable the terminal device to sense whether the DCI is lost, in the embodiment of the present application, a target field is newly added to the DCI sent by the network device on the basis of the existing DCI (as shown in table 1), and the target field may be used to indicate the first DCI number, that is, the number of times that the network device schedules the DCI of the terminal device in the preset time period. Thus, in some embodiments, the DCI may include a target field of a preset length, and the target field is used to indicate the first DCI number.

Here, the preset length specifically refers to a number of bits (bits) occupied by the target field. In some embodiments, the method may further comprise:

determining a preset length based on the first DCI times; or,

determining a preset length based on a preset time period and a preset time slot; or,

and determining the preset length based on the preset time period and the preset subcarrier interval.

That is, the preset length may be set according to the first DCI number of times or according to a preset time period, and the preset length is also related to the size of a preset slot (slot) or a preset subcarrier Space (SCS). In the embodiment of the present application, the number of bits of the preset length may be 10 bits or 11bits, and the value thereof is specifically set according to an actual situation, which is not limited herein.

In a specific example, the determining the preset length may include:

if the first DCI times is 2000, determining that the bit number of the target field is 11; or,

if the first DCI frequency is 1000, the bit number of the target field is determined to be 10.

In another specific example, in the case that the preset time slot is 0.5 ms, or the preset subcarrier spacing is 30kHz, the determining the preset length may include:

if the preset time period is 1 second, determining that the preset length is 11 bits;

and if the preset time period is 0.5 second, determining that the preset length is 10 bits.

In this way, for the first DCI frequency determined by the network device, according to the preset time period, the preset time slot, or the preset subcarrier interval, the preset length of the target field and the value of the target field may be determined, so that DCI may be generated, and then the DCI may be sent to the terminal device, so that the terminal device may determine its DCI receiving situation according to the first DCI frequency.

S402: receiving UCI returned by the terminal equipment, wherein the UCI comprises: the power control commands are transmitted.

S403: and adjusting the transmitting power of the physical downlink control channel according to the transmission power control command.

It should be noted that, after receiving the DCI, the terminal device may also send UCI to the network device according to its DCI receiving situation, where the UCI includes information related to a transmission power control command, so that the network device adaptively adjusts the transmission power of the physical downlink control channel.

The transmission power control command may instruct the network device to adjust the transmission power of the physical downlink control channel to a large extent, or instruct the network device to adjust the transmission power of the physical downlink control channel to a small extent. Therefore, in some embodiments, for S403, the adjusting the transmission power of the physical downlink control channel according to the transmission power control command may include:

when the transmission power control command is a first transmission power control command, improving the transmitting power of a physical downlink control channel; or,

and when the transmission power control command is a second transmission power control command, reducing the transmission power of the physical downlink control channel.

That is to say, according to the DCI receiving situation of the terminal device, the terminal device may notify the network device to perform the power control optimization, so as to improve the DCI loss phenomenon of the terminal device. Specifically, if the DCI receiving condition indicates that the terminal device has DCI loss, in order to avoid the DCI loss at this time, the UCI sent by the terminal device to the network device carries a first transmission power control command, so as to improve the transmission power of the physical downlink control channel; on the contrary, if the DCI receiving condition indicates that the terminal device does not have DCI loss, in order to save power consumption at this time, the UCI sent by the terminal device to the network device carries the second transmission power control command, so as to reduce the transmission power of the physical downlink control channel. Or after determining the DCI receiving situation, if the DCI loss rate is greater than the preset threshold, which means that the DCI loss rate is too high, in order to reduce the DCI loss rate at this time, the UCI sent by the terminal device to the network device carries a first transmission power control command, so as to increase the transmission power of the physical downlink control channel; on the contrary, if the DCI loss rate is less than or equal to the preset threshold, in order to save power consumption at this time, the UCI sent by the terminal device to the network device carries the second transmission power control command, so as to reduce the transmission power of the physical downlink control channel.

Further, in order to improve the DCI loss phenomenon of the terminal device, in some embodiments, the method may further include: and sending DCI to the terminal equipment according to the adjusted transmitting power.

That is to say, when the terminal device has DCI loss, this time also affects the reception of the subsequent PDSCH data packet, which is likely to cause the problems of packet error, packet loss, and the like. At this time, the terminal device can notify the network device to adjust the transmission power of the terminal device through the UCI, and then the network device sends the DCI to the network device according to the adjusted transmission power, so that not only can the DCI loss of the terminal device be improved, and the DCI loss rate of the terminal device be reduced, but also the terminal device can rapidly solve the low-rate debug problem.

The embodiment of the application also provides a power control method which is applied to network equipment. By transmitting DCI to the terminal device; receiving UCI returned by terminal equipment, wherein the UCI comprises: transmitting a power control command; and adjusting the transmitting power of the physical downlink control channel according to the transmission power control command. Therefore, because the UCI format is added to send the transmission power control command, and the transmission power control command is determined based on the DCI receiving condition sensed by the terminal equipment, the low-rate debug problem can be rapidly solved under the condition of not increasing the system complexity, and the transmission power of the PDCCH can be accurate after the network equipment is informed to adjust the transmission power of the PDCCH, so that the DCI loss rate is reduced.

In yet another embodiment of the present application, referring to fig. 5, a detailed flowchart of a power control method provided in the embodiment of the present application is shown. As shown in fig. 5, the detailed flow may include:

s501: the network equipment determines DCI, wherein the DCI comprises information of first DCI times, and the first DCI times are the times of the network equipment scheduling the DCI of the terminal equipment in a preset time period.

S502: the network device transmits the DCI to the terminal device.

S503: the terminal equipment receives DCI sent by the network equipment, and determines the second DCI times, wherein the second DCI times are the times that the terminal equipment actually receives the scheduled DCI in a preset time period.

S504: and determining the DCI receiving condition of the terminal equipment according to the first DCI times and the second DCI times.

S505: determining a transmission power control command according to the DCI receiving condition; the transmission power control command is used for instructing the network equipment to adjust the transmission power of the physical downlink control channel.

S506: the terminal equipment sends UCI to the network equipment, and the UCI comprises: the power control commands are transmitted.

S507: and the network equipment adjusts the transmitting power of the physical downlink control channel according to the received transmission power control command.

It should be noted that the method is applied to a wireless communication system, and the wireless communication system comprises a terminal device and a network device. For a wireless communication system, in the process of data transceiving between a network device and a terminal device, a DCI scheduling mode is usually adopted, the network device sends DCI to notify the terminal device of sending a data packet belonging to the network device, and in order to accurately determine whether the terminal device loses the data packet, the terminal device needs to be able to sense whether the DCI is lost.

It should be noted that, after sensing that the DCI is lost, the terminal device further needs to request the network device to increase the downlink transmission power through closed-loop power control. Specifically, after determining the DCI reception situation, the terminal device sends the UCI carrying the TPC command to the network device, so as to instruct the network device to adjust the transmission power of the physical downlink control channel.

In this way, in order to enable the terminal device to sense whether the DCI is lost, in the embodiment of the present application, a target field is newly added to the DCI sent by the network device on the basis of the existing DCI (as shown in table 1), and the target field may be used to indicate the first DCI number of times that the network device schedules the terminal device within a preset time period. It should be noted that the preset length of the newly added target field may be adjustable according to the first DCI frequency or the actual DCI size, or may be adjustable according to a preset time period, a preset time slot, or a preset subcarrier interval. For example, the number of bits of the preset length may be 11 bits.

In the embodiment of the present application, in general, the preset time period is 1 second, and the preset length of the target field is 11 bits. Illustratively, an 11-bit (2048) field may be added to the DCI, which indicates the number of times that the network device (network side) schedules the DCI of the terminal device in 1 second (2000 slots). When the terminal equipment receives the information each time, the DCI receiving condition (whether the DCI is lost, the DCI loss rate and the like) of the terminal equipment can be counted by comparing the number of times that the terminal equipment actually receives the scheduled DCI. In addition, a UCI format definition is newly added in the embodiment of the present application for transmitting the TPC command.

Here, it is assumed that the preset time period is 1 second, and the preset length of the target field is 11 bits. Based on the existing DCI in table 1, an entry may be added: scheduled time indicator in last one seconds, 11 bits. That is, the network device (network side) may write the preset number of scheduling times (i.e. the first DCI number of times) within the past 1 second (2000 slots @30kHz SCS) into the DCI newly added target field, and send it to the terminal device (e.g. handset). In addition, the UCI format is newly added to transmit the TPC command on the basis of the three types of ACK/NACK, SR and CSI. For the TPC command, the bit number is 1, which represents that the transmission power of the PDCCH is raised by 1 dB; the bit number is 0, indicating that the transmission power of the PDCCH is reduced by 1 dB.

In short, the method described in the embodiment of the application is simple, does not increase the complexity of the system, and is suitable for 4G/5G networks. Assuming that the preset time period is 1 second, the embodiment of the present application may represent that the network side schedules the first DCI frequency of the terminal device within the past one second (2000 slots) by newly adding a target field (for example, a field of 11 bits) with a preset length to the DCI; then, after receiving the information each time, the terminal device compares the information with the number of times that the terminal device actually receives the scheduled second DCI, so as to count the DCI receiving situation (for example, the DCI loss rate). Then, since the UCI format is also added to transmit the TPC command, at this time, the TPC command may be constructed to control the transmission power of the downlink PDCCH according to the DCI loss rate perceived by the terminal device. Specifically, when the DCI loss rate is too high, an instruction to raise the PDCCH transmission power is sent; otherwise, the PDCCH is reduced, and accurate power control of the PDCCH can be realized.

The present embodiment provides a power control method, and the specific implementation of the foregoing embodiment is described in detail through the foregoing embodiment, and it can be seen that, according to the technical solution of the foregoing embodiment, since a UCI format is added to send a transmission power control command, and the transmission power control command is determined based on a DCI receiving condition sensed by a terminal device, under the condition that system complexity is not increased, not only can the issue of low-rate debug be quickly solved, but also the transmission power of a physical downlink control channel can be accurately controlled, so as to further reduce a DCI loss rate.

In yet another embodiment of the present application, based on the same inventive concept as the foregoing embodiment, referring to fig. 6, a schematic diagram of a composition structure of a terminal device 60 provided in an embodiment of the present application is shown. As shown in fig. 6, the terminal device 60 may include a first receiving unit 601, a first determining unit 602, and a first transmitting unit 603; wherein,

a first receiving unit 601 configured to determine DCI receiving conditions of the terminal device;

a first determining unit 602, configured to determine a transmission power control command according to the DCI receiving situation; the transmission power control command is used for instructing the network equipment to adjust the transmission power of the physical downlink control channel;

a first sending unit 603 configured to send UCI to the network device, where the UCI includes: the transmission power control command.

In some embodiments, the first receiving unit 601 is specifically configured to receive DCI sent by a network device, where the DCI includes information of a first DCI number of times, where the first DCI number of times is a number of times that the network device schedules DCI of the terminal device within a preset time period;

a first determining unit 602, further configured to determine a second DCI frequency, where the second DCI frequency is a frequency at which the terminal device actually receives a scheduled DCI in a preset time period; and determining the DCI receiving condition of the terminal equipment according to the first DCI times and the second DCI times.

In some embodiments, the DCI may include a target field of a preset length, the target field indicating the first DCI number.

In some embodiments, the first determining unit 602 is further configured to determine whether DCI loss exists in the terminal device according to the first DCI number and the second DCI number.

In some embodiments, the first determining unit 602 is further configured to determine that the terminal device has DCI loss if the first DCI number is greater than the second DCI number.

In some embodiments, the first determining unit 602 is further configured to determine a DCI loss rate of the terminal device according to the first DCI number and the second DCI number.

In some embodiments, the first determining unit 602 is further configured to determine that the transmission power control command is a first transmission power control command when the DCI receiving condition indicates that the terminal device has DCI loss; or, when the DCI receiving condition indicates that the terminal device does not have DCI loss, determining that the transmission power control command is a second transmission power control command; the first transmission power control command is used for instructing the network device to increase the transmission power of a physical downlink control channel, and the second transmission power control command is used for instructing the network device to decrease the transmission power of the physical downlink control channel.

In some embodiments, the first determining unit 602 is further configured to determine that the transmission power control command is a first transmission power control command when the DCI receiving condition indicates that the DCI loss rate of the terminal device is greater than a preset threshold; or, when the DCI receiving condition indicates that the DCI loss rate of the terminal device is less than or equal to a preset threshold, determining that the transmission power control command is a second transmission power control command; the first transmission power control command is used for instructing the network device to increase the transmission power of a physical downlink control channel, and the second transmission power control command is used for instructing the network device to decrease the transmission power of the physical downlink control channel.

It is understood that in the embodiments of the present application, a "unit" may be a part of a circuit, a part of a processor, a part of a program or software, and the like, and may also be a module, and may also be non-modular. Moreover, each component in the embodiment may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware or a form of a software functional module.

Based on the understanding that the technical solution of the present embodiment essentially or a part contributing to the prior art, or all or part of the technical solution may be embodied in the form of a software product stored in a storage medium, and include several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor (processor) to execute all or part of the steps of the method of the present embodiment. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

Therefore, the present embodiment provides a computer storage medium applied to the terminal device 60, and the computer storage medium stores a computer program, and the computer program realizes the method in any one of the foregoing embodiments when executed by the first processor.

Based on the above-mentioned composition of the terminal device 60 and the computer storage medium, refer to fig. 7, which shows a specific hardware structure diagram of a terminal device 60 provided in an embodiment of the present application. As shown in fig. 7, may include: a first communication interface 701, a first memory 702, and a first processor 703; the various components are coupled together by a first bus system 704. It is understood that the first bus system 704 is used to enable connection communications between these components. The first bus system 704 includes a power bus, a control bus, and a status signal bus in addition to a data bus. For clarity of illustration, however, the various buses are labeled as a first bus system 704 in fig. 7. Wherein,

a first communication interface 701, configured to receive and transmit signals during information transmission and reception with other external network elements;

a first memory 702 for storing a computer program capable of running on the first processor 703;

a first processor 703, configured to execute, when running the computer program:

determining DCI receiving conditions of the terminal equipment;

transmitting UCI to the network device, the UCI comprising: the transmission power control command.

It will be appreciated that the first memory 702 in embodiments of the subject application can be either volatile memory or nonvolatile memory, or can include both volatile and nonvolatile memory. The non-volatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash Memory. Volatile Memory can be Random Access Memory (RAM), which acts as external cache Memory. By way of illustration and not limitation, many forms of RAM are available, such as Static random access memory (Static RAM, SRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic random access memory (Synchronous DRAM, SDRAM), Double Data Rate Synchronous Dynamic random access memory (ddr Data Rate SDRAM, ddr SDRAM), Enhanced Synchronous SDRAM (ESDRAM), Synchlink DRAM (SLDRAM), and Direct Rambus RAM (DRRAM). The first memory 702 of the systems and methods described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

The first processor 703 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the method may be implemented by integrated logic circuits of hardware or instructions in the form of software in the first processor 703. The first Processor 703 may be a general-purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, or discrete hardware components. The various methods, steps, and logic blocks disclosed in the embodiments of the present application may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in the first memory 702, and the first processor 703 reads the information in the first memory 702, and completes the steps of the method in combination with the hardware thereof.

It is to be understood that the embodiments described herein may be implemented in hardware, software, firmware, middleware, microcode, or any combination thereof. For a hardware implementation, the Processing units may be implemented within one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), general purpose processors, controllers, micro-controllers, microprocessors, other electronic units configured to perform the functions described herein, or a combination thereof. For a software implementation, the techniques described herein may be implemented with modules (e.g., procedures, functions, and so on) that perform the functions described herein. The software codes may be stored in a memory and executed by a processor. The memory may be implemented within the processor or external to the processor.

Optionally, as another embodiment, the first processor 703 is further configured to, when running the computer program, perform the method of any of the foregoing embodiments.

The embodiment provides a terminal device which can comprise a first receiving unit, a first determining unit and a first sending unit. Therefore, because the UCI format is added to send the transmission power control command, and the transmission power control command is determined based on the DCI receiving condition sensed by the terminal equipment, the method can not only quickly solve the low-rate debug problem, but also accurately control the transmitting power of the physical downlink control channel under the condition of not increasing the system complexity, and further reduce the DCI loss rate.

In yet another embodiment of the present application, based on the same inventive concept as the foregoing embodiment, referring to fig. 8, a schematic diagram of a composition structure of a network device 80 provided in an embodiment of the present application is shown. As shown in fig. 8, the network device 80 may include: a second transmitting unit 801, a second receiving unit 802, and a power control unit 803; wherein,

a second transmission unit 801 configured to transmit DCI to a terminal apparatus;

a second receiving unit 802, configured to receive UCI returned by the terminal device, where the UCI includes: transmitting a power control command;

a power control unit 803, configured to adjust the transmission power of the physical downlink control channel according to the transmission power control command.

In some embodiments, referring to fig. 8, the network device 80 may further include a second determining unit 804 configured to determine DCI; the DCI comprises information of a first DCI frequency, wherein the first DCI frequency is the frequency of scheduling the DCI of the terminal equipment by the network equipment in a preset time period.

In some embodiments, the second determining unit 804 is further configured to determine the preset length based on the first DCI number; or, determining the preset length based on the preset time period and the preset time slot; or, the preset length is determined based on the preset time period and a preset subcarrier interval.

In some embodiments, when the preset time slot is 0.5 ms or the preset subcarrier interval is 30kHz, the second determining unit 804 is specifically configured to determine that the preset length is 11bits if the preset time period is 1 second; or, if the preset time period is 0.5 second, determining that the preset length is 10 bits.

In some embodiments, the power control unit 803 is specifically configured to increase the transmission power of the physical downlink control channel when the transmission power control command is a first transmission power control command; or, when the transmission power control command is a second transmission power control command, reducing the transmission power of the physical downlink control channel.

In some embodiments, the second sending unit 801 is further configured to send DCI to the terminal device according to the adjusted transmission power.

It is understood that in this embodiment, a "unit" may be a part of a circuit, a part of a processor, a part of a program or software, etc., and may also be a module, or may also be non-modular. Moreover, each component in the embodiment may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware or a form of a software functional module.

The integrated unit, if implemented in the form of a software functional module and not sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the present embodiment provides a computer storage medium applied to the network device 80, which stores a computer program that realizes the method of any one of the foregoing embodiments when executed by the second processor.

Based on the above-mentioned components of the network device 80 and the computer storage medium, refer to fig. 9, which shows a specific hardware structure diagram of a network device 80 provided in an embodiment of the present application. As shown in fig. 9, may include: a second communication interface 901, a second memory 902 and a second processor 903; the various components are coupled together by a second bus system 904. It will be appreciated that the second bus system 904 is used to enable communications among the components. The second bus system 904 includes a power bus, a control bus, and a status signal bus in addition to the data bus. But for clarity of illustration the various buses are labeled as the second bus system 904 in figure 9. Wherein,

a second communication interface 901, configured to receive and send signals in a process of receiving and sending information with other external network elements;

a second memory 902 for storing a computer program capable of running on the second processor 903;

a second processor 903, configured to execute, when running the computer program:

transmitting DCI to the terminal equipment;

receiving UCI returned by terminal equipment, wherein the UCI comprises: transmitting a power control command;

Optionally, as another embodiment, the second processor 903 is further configured to execute the method in any one of the foregoing embodiments when the computer program is executed.

It is to be understood that the second memory 902 has hardware functionality similar to that of the first memory 702, and the second processor 903 has hardware functionality similar to that of the first processor 703; and will not be described in detail herein.

The embodiment provides a network device, which comprises a second transmitting unit, a second receiving unit and a power control unit. Therefore, because the UCI format is added to send the transmission power control command, and the transmission power control command is determined based on the DCI receiving condition sensed by the terminal equipment, the method can not only quickly solve the low-rate debug problem, but also accurately control the transmitting power of the physical downlink control channel under the condition of not increasing the system complexity, and further reduce the DCI loss rate.

It should be noted that, in the present application, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

The above-mentioned serial numbers of the embodiments of the present application are merely for description and do not represent the merits of the embodiments.

The methods disclosed in the several method embodiments provided in the present application may be combined arbitrarily without conflict to obtain new method embodiments.

Features disclosed in several of the product embodiments provided in the present application may be combined in any combination to yield new product embodiments without conflict.

The features disclosed in the several method or apparatus embodiments provided in the present application may be combined arbitrarily, without conflict, to arrive at new method embodiments or apparatus embodiments.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A power control method is applied to a terminal device, and comprises the following steps:

2. The method of claim 1, wherein the determining the DCI reception of the terminal device comprises:

receiving DCI sent by the network equipment, wherein the DCI comprises information of first DCI times, and the first DCI times are the times of scheduling the DCI of the terminal equipment by the network equipment in a preset time period;

determining a second DCI frequency, wherein the second DCI frequency is the frequency of actually receiving the scheduled DCI by the terminal equipment in a preset time period;

and determining the DCI receiving condition of the terminal equipment according to the first DCI times and the second DCI times.

3. The method of claim 2, wherein the DCI comprises a target field with a preset length, and wherein the target field is used for indicating the first DCI times.

4. The method of claim 2, wherein the determining the DCI reception of the terminal device according to the first DCI number and the second DCI number comprises:

5. The method of claim 4, wherein the determining whether the terminal device has DCI loss according to the first DCI times and the second DCI times comprises:

6. The method of claim 2, wherein the determining the DCI reception of the terminal device according to the first DCI number and the second DCI number comprises:

7. The method according to any of claims 1 to 6, wherein said determining a transmission power control command according to said DCI reception comprises:

when the DCI receiving condition indicates that the terminal equipment has DCI loss, determining the transmission power control command as a first transmission power control command; or,

when the DCI receiving condition indicates that the terminal equipment has no DCI loss, determining the transmission power control command as a second transmission power control command;

the first transmission power control command is used for instructing the network device to increase the transmission power of a physical downlink control channel, and the second transmission power control command is used for instructing the network device to decrease the transmission power of the physical downlink control channel.

8. The method according to any of claims 1 to 7, wherein said determining a transmission power control command according to said DCI reception comprises:

9. A power control method applied to a network device, the method comprising:

transmitting DCI to the terminal equipment;

10. The method of claim 9, wherein prior to said sending DCI to a terminal device, the method further comprises:

determining DCI; the DCI comprises information of a first DCI frequency, wherein the first DCI frequency is the frequency of scheduling the DCI of the terminal equipment by the network equipment in a preset time period.

11. The method of claim 10, wherein the DCI comprises a target field of a preset length, and wherein the target field is used for indicating the first DCI number of times.

12. The method of claim 11, further comprising:

determining the preset length based on the first DCI times; or,

determining the preset length based on the preset time period and the preset time slot; or,

13. The method of claim 12, wherein the determining the preset length in case that the preset time slot is 0.5 ms or the preset subcarrier spacing is 30kHz comprises:

14. The method of claim 9, wherein the adjusting the transmission power of the physical downlink control channel according to the transmission power control command comprises:

when the transmission power control command is a first transmission power control command, increasing the transmission power of the physical downlink control channel; or,

15. The method according to any one of claims 9 to 14, further comprising:

and sending DCI to the terminal equipment according to the adjusted transmitting power.

16. A terminal device, characterized in that the terminal device comprises a first receiving unit, a first determining unit and a first sending unit; wherein,

the first receiving unit is configured to determine a DCI receiving situation of the terminal device;

the first determining unit is configured to determine a transmission power control command according to the DCI receiving situation; the transmission power control command is used for instructing the network equipment to adjust the transmission power of the physical downlink control channel;

the first sending unit is configured to send UCI to the network device, where the UCI includes: the transmission power control command.

17. A terminal device, characterized in that the terminal device comprises a first memory and a first processor; wherein,

the first memory for storing a computer program operable on the first processor;

the first processor, when executing the computer program, is configured to perform the method of any of claims 1 to 8.

18. A network device, characterized in that the network device comprises a second transmitting unit, a second receiving unit and a power control unit; wherein,

the second sending unit is configured to send the DCI to the terminal equipment;

the second receiving unit is configured to receive UCI returned by the terminal device, where the UCI includes: transmitting a power control command;

and the power control unit is configured to adjust the transmission power of the physical downlink control channel according to the transmission power control command.

19. A network device, comprising a second memory and a second processor; wherein,

the second memory for storing a computer program operable on the second processor;

the second processor, when executing the computer program, is configured to perform the method of any of claims 9 to 15.

20. A computer storage medium, characterized in that it stores a computer program which, when executed by a first processor, implements the method of any one of claims 1 to 8, or which, when executed by a second processor, implements the method of any one of claims 9 to 15.