CN111436106B

CN111436106B - Signal transmission method, device and system

Info

Publication number: CN111436106B
Application number: CN201910028460.8A
Authority: CN
Inventors: 谢信乾; 郭志恒; 费永强; 毕文平
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2019-01-11
Filing date: 2019-01-11
Publication date: 2024-04-12
Anticipated expiration: 2039-01-11
Also published as: CN111436106A; WO2020143638A1

Abstract

The embodiments of the present application provide a method, device and system for signal transmission, which can improve the rate at which a terminal device transmits an uplink signal to a network device. The method includes: the terminal device determines a first transmission power of a first uplink signal to be transmitted to a first network device within a first time unit, and the terminal device determines a second transmission power of a second uplink signal to be transmitted to a second network device within a second time unit, and the first time unit and the second time unit have an overlapping part in time; when the sum of the first transmission power and the second transmission power is greater than the maximum transmission power of the terminal device, the terminal device determines the priority of the first uplink signal and the second uplink signal according to the number of repetitions of the first uplink signal and the number of repetitions of the second uplink signal, and reduces the transmission power of the uplink signal with a low priority, thereby giving priority to ensuring the transmission power of the uplink signal with a high priority.

Description

Signal transmission method, device and system

Technical Field

The present disclosure relates to the field of communications technologies, and in particular, to a signal sending method, device, and system.

Background

In current communication systems, terminal devices support simultaneous access to two network devices in a manner known as dual connectivity (dual connectivity, DC). Wherein one network device is a primary network device and the other network device is a secondary network device. One or more cells served by a primary network device to a terminal device are referred to as a primary cell group (master cell group, MCG), while one or more cells served by a secondary network device to a terminal device are referred to as a secondary cell group (secondary cellgroup, SCG).

In order to increase the rate of the terminal device sending uplink signals to the network device, the terminal device usually works in the DC mode and can send uplink signals to the network device on carriers in the MCG and the SCG simultaneously in the same time period, but the total power of the terminal device sending uplink signals on all carriers is limited, such as a maximum of not exceeding 23dBm, so if the total power of the terminal device sending uplink signals on carriers in the MCG and the SCG exceeds the maximum sending power, the terminal device needs to actively reduce the power of sending uplink signals on one or more carriers.

In the prior art, a terminal device determines the priority of an uplink signal according to the type of the uplink signal, and reduces the transmission power of the uplink signal with low priority, so as to preferentially ensure the transmission power of the uplink signal with high priority. For example, priorities of different types of uplink signals are predefined in the current protocol, and the priority order is sequentially from high to low:

-a physical-layer uplink control channel, PUCCH, carrying an Acknowledgement (ACK), a negative Acknowledgement (negative Acknowledgement) and a scheduling request (scheduling request, SR);

-physical-uplink shared channel (PUSCH) carrying ACKs and NACKs;

-PUCCH carrying channel state information (channel State Information, CSI);

-PUSCH carrying CSI;

PUSCH without ACK, NACK or CSI;

-sounding reference signals (sounding reference signal, SRS).

However, the above mechanism for determining the priority of the uplink signal is not complete, and in some situations, the rate of sending the uplink signal to the network device by the terminal device may be reduced, so how to ensure the rate of sending the uplink signal to the network device by the terminal device is a problem to be solved.

Disclosure of Invention

The method, the device and the system for sending the signals can ensure the rate of sending the uplink signals to the network equipment by the terminal equipment.

In order to achieve the above purpose, the embodiments of the present application adopt the following technical solutions:

in a first aspect, a signal transmission method and a corresponding communication device are provided. In the scheme, the terminal equipment determines first transmission power of a first uplink signal to be transmitted to the first network equipment in a first time unit, and determines second transmission power of a second uplink signal to be transmitted to the second network equipment in a second time unit, wherein the first time unit is an nth 1 time unit in N1 time units on a first carrier, the second time unit is an nth 2 time unit in N2 time units on a second carrier, the first time unit and the second time unit have overlapping parts in time, N1, N2, N1 and N2 are all positive integers, the N1 time units are time units configured to transmit the first uplink signal, and the N2 time units are time units configured to transmit the second uplink signal; further, when the sum of the first transmission power and the second transmission power is larger than the maximum transmission power of the terminal device, if n1=n2 and N1< N2, or if N1 is larger than N2: the terminal equipment transmits a second uplink signal in a second time unit with a second transmission power, wherein the first time unit carries a first uplink signal, the transmission power of the first uplink signal is a third transmission power, and the third transmission power is smaller than the first transmission power.

In this scheme, N1 may be the number of repetitions of the first uplink signal, N2 may be the number of repetitions of the second uplink signal, and N1< N2 may represent that the first transmission time of the first uplink signal is later than the first transmission time of the second uplink signal. Therefore, the scheme can be understood as determining the priority of the uplink signal (i.e. the case where N1 is greater than N2) based on the repetition times of the first uplink signal and the second uplink signal, and further determining the transmission power of the second uplink signal and whether to transmit the first uplink signal. For example, in this embodiment, the priority of the signal with the large repetition number is smaller than the priority of the signal with the small repetition number, and the transmission power of the uplink signal with the low priority is reduced, so that the transmission power of the uplink signal with the high priority is preferentially ensured. Alternatively, the priority of the uplink signal is determined based on the first transmission time of the first uplink signal and the second uplink signal when the repetition times of the first uplink signal and the second uplink signal are equal (i.e., the case where n1=n2 and N1< N2). In this embodiment, the priority of the signal with the first transmission time is higher than the priority of the signal with the second transmission time, and the transmission power of the uplink signal with the low priority is reduced, so that the transmission power of the uplink signal with the high priority is preferentially ensured. In summary, through the above scheme, when there is a repeated transmission scenario of PUCCH or PUSCH, the rate at which the terminal device sends the uplink signal with high priority to the network device may still be ensured when the power is limited.

It can be understood that the embodiment of the present invention essentially uses the repetition number of the signal as a priority factor for the terminal device to perform uplink power control. For example, the signal having a large number of repetitions may have a higher priority than the signal having a small number of repetitions, so that the terminal device may implement the method according to the priority when performing uplink power control. It can be understood that, for the same repetition number, the priority of the signal with the early first transmission time may be lower than the priority of the signal with the late first transmission time, and the specific implementation manner may refer to the above description, which is not repeated in this embodiment.

In a second aspect, a signal transmitting method and a corresponding communication device are provided. In the scheme, the terminal equipment determines first transmission power of a first uplink signal to be transmitted to the first network equipment in a first time unit, and determines second transmission power of a second uplink signal to be transmitted to the second network equipment in a second time unit, wherein the first time unit is an nth 1 time unit in N1 time units on a first carrier, the second time unit is an nth 2 time unit in N2 time units on a second carrier, the first time unit and the second time unit have overlapping parts in time, N1, N2, N1 and N2 are all positive integers, the N1 time units are time units configured to transmit the first uplink signal, and the N2 time units are time units configured to transmit the second uplink signal; further, when the sum of the first transmission power and the second transmission power is larger than the maximum transmission power of the terminal device, if n1=n2 and N1< N2, or if N1 is larger than N2: and the terminal equipment transmits a second uplink signal in a second time unit at a second transmission power, wherein the first time unit does not bear the first uplink signal.

In this scheme, N1 may be the number of repetitions of the first uplink signal, N2 may be the number of repetitions of the second uplink signal, and N1< N2 may represent that the first transmission time of the first uplink signal is later than the first transmission time of the second uplink signal. Therefore, the scheme can be understood as determining the priority of the uplink signal (i.e. the case where N1 is greater than N2) based on the repetition times of the first uplink signal and the second uplink signal, and further determining the transmission power of the second uplink signal and whether to transmit the first uplink signal. For example, in this embodiment, the priority of the signal with the larger repetition number is lower than the priority of the signal with the smaller repetition number, and the uplink signal with the lower priority is not transmitted (i.e., the transmission power of the uplink signal with the lower priority may be regarded as being reduced to 0), so that the transmission power of the uplink signal with the higher priority is preferentially ensured. Alternatively, the priority of the uplink signal is determined based on the first transmission time of the first uplink signal and the second uplink signal when the repetition times of the first uplink signal and the second uplink signal are equal (i.e., the case where n1=n2 and N1< N2). In this embodiment, the signal with the earlier first transmission time has a higher priority than the signal with the later first transmission time, and the uplink signal with the lower priority is not transmitted (i.e., the transmission power of the uplink signal with the lower priority may be regarded as being reduced to 0), so that the transmission power of the uplink signal with the higher priority is preferentially ensured. In summary, through the above scheme, when there is a repeated transmission scenario of PUCCH or PUSCH, the rate at which the terminal device sends the uplink signal with high priority to the network device may still be ensured when the power is limited.

In a third aspect, a signal transmitting method and a corresponding communication device are provided. In the scheme, the terminal equipment determines first transmission power of a first uplink signal to be transmitted to the first network equipment in a first time unit, and determines second transmission power of a second uplink signal to be transmitted to the second network equipment in a second time unit, wherein the first time unit is an nth 1 time unit in N1 time units on a first carrier, the second time unit is an nth 2 time unit in N2 time units on a second carrier, the first time unit and the second time unit have overlapping parts in time, N1, N2, N1 and N2 are all positive integers, the N1 time units are time units configured to transmit the first uplink signal, and the N2 time units are time units configured to transmit the second uplink signal; further, when the sum of the first transmission power and the second transmission power is larger than the maximum transmission power of the terminal device, if n1=n2 and N1< N2, or if N1 is larger than N2: and the terminal equipment transmits the second uplink signal in the second time unit with fourth transmission power, wherein the fourth transmission power is smaller than the second transmission power, and the first time unit does not bear the first uplink signal.

In one possible design, when the first time unit carries the first uplink signal, a power difference between the third transmit power and the first transmit power is less than or equal to a first threshold. That is, in the case of transmitting the first uplink signal after reducing the transmission power, if the transmission power is reduced too much, the signal quality of the first uplink signal should be poor, and it is not recommended to transmit the first uplink signal after reducing the transmission power, but the first uplink signal is not transmitted directly; if the transmission power is not reduced much, the transmission power of the first uplink signal may be reduced and transmitted.

In one possible design, the first time unit carries a first uplink signal, including: if N1 is a positive integer greater than 1, the first time unit carries the first uplink signal, where the sum of the third transmit power and the second transmit power is less than the maximum transmit power. That is, as long as the first uplink signal can be transmitted repeatedly a plurality of times, an operation of transmitting the first uplink signal after the transmission power of the first uplink signal is reduced in the first time unit may be performed. After the first network device receives the first uplink signal in the first time unit, the first network device can analyze the signal by combining the first uplink signals repeatedly sent by other time units in the N1 time units, so that the first uplink signal obtained by analysis is more accurate.

In one possible design, the type of the first upstream signal is the same as the type of the second upstream signal. That is, in this embodiment of the present application, the terminal device may determine the priority of the first uplink signal and the second uplink signal according to the type of the first uplink signal and the type of the second uplink signal, where the priority order is described in the background art, and is not described herein again. If the type of the first uplink signal is the same as the type of the second uplink signal, the priorities of the first uplink signal and the second uplink signal may be further determined by the repetition times of the first uplink signal and the second uplink signal.

In one possible design, one of the first carrier and the second carrier belongs to a primary cell group MCG, and the other carrier belongs to a secondary cell group SCG; alternatively, the first carrier and the second carrier respectively belong to two different SCGs.

In one possible design, the first carrier and the second carrier are both carriers of a new air interface NR system; or, one of the first carrier and the second carrier is a carrier of an NR system, and the other carrier is a carrier of a long term evolution LTE system.

In one possible design, the solution further comprises: the terminal device receives first indication information from the first network device, wherein the first indication information is used for indicating the N1 time units. That is, the first network device may configure N1 time units for transmitting the first uplink signal.

In one possible design, the solution further comprises: the terminal device receives second indication information from the second network device, wherein the second indication information is used for indicating the N2 time units. That is, the second network device may configure N2 time units for transmitting the second uplink signal.

In a fourth aspect, there is provided a communication apparatus comprising: a processor and a transceiver; the processor is configured to determine a first transmission power of a first uplink signal to be transmitted to a first network device in a first time unit, and determine a second transmission power of a second uplink signal to be transmitted to a second network device in a second time unit, where the first time unit is an nth 1 time unit of N1 time units on a first carrier, the second time unit is an nth 2 time unit of N2 time units on a second carrier, the first time unit and the second time unit have overlapping portions in time, N1, N2, N1, and N2 are all positive integers, the N1 time units are time units configured to transmit the first uplink signal, and the N2 time units are time units configured to transmit the second uplink signal; the processor is further configured to, in a case where a sum of the first transmission power and the second transmission power is greater than a maximum transmission power of the terminal device, if n1=n2 and N1< N2, or if N1 is greater than N2: transmitting, by the transceiver, the second uplink signal at the second transmit power in the second time unit, wherein the first time unit carries the first uplink signal, the transmit power of the first uplink signal is a third transmit power, and the third transmit power is less than the first transmit power; or the first time unit does not bear the first uplink signal; or transmitting, by the transceiver, the second uplink signal at a fourth transmit power in the second time unit, wherein the fourth transmit power is less than the second transmit power, and the first time unit does not carry the first uplink signal.

In one possible design, when the first time unit carries the first uplink signal, a power difference between the third transmit power and the first transmit power is less than or equal to a first threshold.

In one possible design, the first time unit carries the first uplink signal, including: if N1 is a positive integer greater than 1, the first time unit carries the first uplink signal, where the sum of the third transmit power and the second transmit power is less than the maximum transmit power.

In one possible design, the type of the first upstream signal is the same as the type of the second upstream signal.

In one possible design, the first carrier and the second carrier are both carriers of a new air interface NR system; or, one of the first carrier and the second carrier is a carrier of the NR system, and the other carrier is a carrier of the long term evolution LTE system.

In one possible design, the transceiver is configured to receive first indication information from the first network device, where the first indication information is configured to indicate the N1 time units.

In one possible design, the transceiver is configured to receive second indication information from the second network device, wherein the second indication information is configured to indicate the N2 time units.

The technical effects of the fourth aspect may refer to the first aspect, the second aspect, or the third aspect, which are not described herein.

In a fifth aspect, a communication device is provided for implementing the various methods described above. The communication means may be or include the terminal device of the first, second or third aspect. The communication device comprises corresponding modules, units or means (means) for realizing the method, and the modules, units or means can be realized by hardware, software or realized by executing corresponding software by hardware. The hardware or software includes one or more modules or units corresponding to the functions described above.

In a sixth aspect, there is provided a communication apparatus comprising: a processor and a memory; the memory is configured to store computer instructions that, when executed by the processor, cause the communication device to perform the method of any of the above aspects. The communication means may be or include the terminal device of the first, second or third aspect.

In a seventh aspect, there is provided a communication apparatus comprising: a processor; the processor is configured to couple to the memory and to execute the method according to any of the above aspects in accordance with the instructions in the memory after reading the instructions. The communication means may be or include the terminal device of the first, second or third aspect.

In an eighth aspect, a computer readable storage medium is provided, in which instructions are stored which, when run on a computer, cause the computer to perform the method of any of the above aspects.

In a ninth aspect, there is provided a computer program product comprising instructions which, when run on a computer, cause the computer to perform the method of any of the above aspects.

In a tenth aspect, there is provided a communications device (e.g. which may be a chip or a system of chips) comprising a processor for carrying out the functions referred to in any of the above aspects. In one possible design, the communication device further includes a memory for holding necessary program instructions and data. When the communication device is a chip system, the communication device may be formed of a chip, or may include a chip and other discrete devices.

The technical effects of any one of the fifth to tenth aspects may be referred to the technical effects of the different designs of the first, second or third aspects, and are not described herein.

An eleventh aspect provides a communication system comprising a first network device, a second network device, and a terminal device according to the above aspect.

The technical effects of the eleventh aspect may refer to the first aspect, the second aspect, or the third aspect, which are not described herein.

In one possible design, the first network device is further configured to send first indication information to the terminal device; the terminal device is further configured to receive the first indication information from the first network device, where the first indication information is used to indicate the N1 time units. That is, the first network device may configure N1 time units for transmitting the first uplink signal.

In one possible design, the second network device is further configured to send second indication information to the terminal device; the terminal device is further configured to receive second indication information from the second network device, where the second indication information is used to indicate the N2 time units. That is, the second network device may configure N2 time units for transmitting the second uplink signal.

Drawings

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

fig. 2 is a schematic diagram of a communication system scenario in which a first network device and a second network device are deployed at the same site, provided in an embodiment of the present application;

fig. 3 is a schematic structural diagram of the network device and the terminal device shown in fig. 2 according to an embodiment of the present application;

fig. 4 is a schematic diagram of a communication system scenario in which a first network device and a second network device are deployed at different sites according to an embodiment of the present application;

fig. 5 is a schematic structural diagram of the first network device, the second network device, and the terminal device shown in fig. 4 according to an embodiment of the present application;

fig. 6 is another schematic structural diagram of a terminal device provided in an embodiment of the present application;

fig. 7 is a flow chart of a signal sending method according to an embodiment of the present application;

fig. 8a is a schematic diagram of a configuration of N1 time units and N2 time units according to an embodiment of the present application;

fig. 8b is a second schematic configuration diagram of N1 time units and N2 time units provided in the embodiment of the present application;

fig. 8c is a third schematic configuration diagram of N1 time units and N2 time units provided in the embodiment of the present application;

fig. 8d is a schematic diagram of a configuration of N1 time units and N2 time units according to an embodiment of the present application;

Fig. 9a is a fifth configuration diagram of N1 time units and N2 time units provided in the embodiment of the present application;

fig. 9b is a schematic diagram sixth of the configuration of N1 time units and N2 time units provided in the embodiment of the present application;

fig. 9c is a schematic diagram seventh of the configuration of N1 time units and N2 time units provided in the embodiment of the present application;

fig. 10a is a schematic diagram illustrating a configuration of a first time unit and a second time unit according to an embodiment of the present application;

fig. 10b is a second schematic configuration diagram of a first time unit and a second time unit provided in an embodiment of the present application;

fig. 10c is a schematic diagram III of the configuration of the first time unit and the second time unit provided in the embodiment of the present application;

fig. 11 is a schematic structural diagram of a terminal device according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application. Wherein, in the description of the present application, "/" means that the related objects are in a "or" relationship, unless otherwise specified, for example, a/B may mean a or B; the term "and/or" in this application is merely an association relation describing an association object, and means that three kinds of relations may exist, for example, a and/or B may mean: there are three cases, a alone, a and B together, and B alone, wherein a, B may be singular or plural. Also, in the description of the present application, the term "system" may be interchangeable with "network" unless otherwise indicated; "plurality" means two or more than two. "at least one of" or the like means any combination of these items, including any combination of single item(s) or plural items(s). For example, at least one (one) of a, b, or c may represent: a, b, c, a-b, a-c, b-c, or a-b-c, wherein a, b, c may be single or plural. In addition, in order to clearly describe the technical solutions of the embodiments of the present application, in the embodiments of the present application, the words "first", "second", and the like are used to distinguish the same item or similar items having substantially the same function and effect. It will be appreciated by those of skill in the art that the words "first," "second," and the like do not limit the amount and order of execution, and that the words "first," "second," and the like do not necessarily differ.

In the prior art, a terminal device determines the priority of an uplink signal according to the type of the uplink signal, and if the types of uplink signals transmitted on carriers in an MCG and an SCG are the same in the same time period, the terminal device determines the priority of the uplink signal according to a Cell Group (CG) corresponding to the uplink signal, and reduces the transmission power of the uplink signal with a low priority, thereby preferentially ensuring the transmission power of the uplink signal with a high priority. For example, the protocol defines that the priority of the uplink signal sent on the carrier in the MCG is higher than the priority of the uplink signal sent on the carrier in the SCG.

However, in the current fifth generation (5th generation,5G) new air interface (new radio interface, NR) system, there is a repetition transmission of PUCCH or PUSCH, for which, the priority of the uplink signal is determined according to the existing priority mechanism for determining the uplink signal, and the transmission power of the uplink signal with a low priority is reduced, so that the transmission power of the uplink signal with a high priority is preferentially ensured, and the rate at which the terminal device transmits the uplink signal to the network device may be reduced.

In order to increase the rate at which the terminal device sends the uplink signal to the network device, as shown in fig. 1, a communication system 10 is provided in an embodiment of the present application. The communication system 10 is applied in a DC scenario and comprises a first network device 101, a second network device 102, and one or more terminal devices 103 (one terminal device is illustrated in the example of fig. 1) connected to both the first network device 101 and the second network device 102.

Taking interaction between any one of the terminal devices 103 and the first network device 101 and the second network device 102 as an example, in this embodiment of the present application, in one possible implementation manner, the terminal device 103 determines a first transmission power of a first uplink signal to be sent to the first network device 101 in a first time unit, and the terminal device 103 determines a second transmission power of a second uplink signal to be sent to the second network device 102 in a second time unit, where the first time unit is an nth 1 time unit in N1 time units on a first carrier, the second time unit is an nth 2 time unit in N2 time units on a second carrier, where the first time unit and the second time unit have overlapping portions in time, where N1, N2, N1, and N2 are all positive integers, and where N1 time units are time units configured to send the first uplink signal and N2 time units are time units configured to send the second uplink signal. Further, in the case where the sum of the first transmission power and the second transmission power is larger than the maximum transmission power of the terminal device 103, if n1=n2 and N1< N2, or if N1 is larger than N2: the terminal equipment transmits a second uplink signal in a second time unit with a second transmission power, wherein the first time unit carries a first uplink signal, the transmission power of the first uplink signal is a third transmission power, and the third transmission power is smaller than the first transmission power. The specific implementation of this scheme will be described in detail in the following method embodiments, which are not described herein. In this scheme, N1 may be the number of repetitions of the first uplink signal, N2 may be the number of repetitions of the second uplink signal, and N1< N2 may represent that the first transmission time of the first uplink signal is later than the first transmission time of the second uplink signal. Therefore, the scheme can be understood as determining the priority of the uplink signal (i.e. the case where N1 is greater than N2) based on the repetition times of the first uplink signal and the second uplink signal, and further determining the transmission power of the second uplink signal and whether to transmit the first uplink signal. For example, in this embodiment, the priority of the signal with the large repetition number is smaller than the priority of the signal with the small repetition number, and the transmission power of the uplink signal with the low priority is reduced, so that the transmission power of the uplink signal with the high priority is preferentially ensured. Alternatively, the priority of the uplink signal is determined based on the first transmission time of the first uplink signal and the second uplink signal when the repetition times of the first uplink signal and the second uplink signal are equal (i.e., the case where n1=n2 and N1< N2). In this embodiment, the priority of the signal with the first transmission time is higher than the priority of the signal with the second transmission time, and the transmission power of the uplink signal with the low priority is reduced, so that the transmission power of the uplink signal with the high priority is preferentially ensured. In summary, through the scheme, when the repeated transmission scene of the PUCCH or the PUSCH exists, the rate of the terminal equipment transmitting the uplink signal with high priority to the network equipment can be still ensured when the power is limited.

Or taking interaction between any one of the terminal devices 103 and the first network device 101 and the second network device 102 as an example, in this embodiment of the present application, in a possible implementation manner, the terminal device 103 determines a first transmission power of a first uplink signal to be sent to the first network device 101 in a first time unit, and the terminal device 103 determines a second transmission power of a second uplink signal to be sent to the second network device 102 in a second time unit, where the first time unit is an nth 1 time unit in N1 time units on the first carrier, the second time unit is an nth 2 time unit in N2 time units on the second carrier, where the first time unit and the second time unit have overlapping portions in time, where N1, N2, N1, and N2 are all positive integers, and where N1 time units are time units configured to send the first uplink signal and N2 time units are time units configured to send the second uplink signal. Further, in the case where the sum of the first transmission power and the second transmission power is larger than the maximum transmission power of the terminal device 103, if n1=n2 and N1< N2, or if N1 is larger than N2: and the terminal equipment transmits a second uplink signal in a second time unit at a second transmission power, wherein the first time unit does not bear the first uplink signal. The specific implementation of this scheme will be described in detail in the following method embodiments, which are not described herein. In this scheme, N1 may be the number of repetitions of the first uplink signal, N2 may be the number of repetitions of the second uplink signal, and N1< N2 may represent that the first transmission time of the first uplink signal is later than the first transmission time of the second uplink signal. Therefore, the scheme can be understood as determining the priority of the uplink signal (i.e. the case where N1 is greater than N2) based on the repetition times of the first uplink signal and the second uplink signal, and further determining the transmission power of the second uplink signal and whether to transmit the first uplink signal. For example, in this embodiment, the priority of the signal with the larger repetition number is lower than the priority of the signal with the smaller repetition number, and the uplink signal with the lower priority is not transmitted (i.e., the transmission power of the uplink signal with the lower priority may be regarded as being reduced to 0), so that the transmission power of the uplink signal with the higher priority is preferentially ensured. Alternatively, the priority of the uplink signal is determined based on the first transmission time of the first uplink signal and the second uplink signal when the repetition times of the first uplink signal and the second uplink signal are equal (i.e., the case where n1=n2 and N1< N2). In this embodiment, the signal with the earlier first transmission time has a higher priority than the signal with the later first transmission time, and the uplink signal with the lower priority is not transmitted (i.e., the transmission power of the uplink signal with the lower priority may be regarded as being reduced to 0), so that the transmission power of the uplink signal with the higher priority is preferentially ensured. In summary, through the above scheme, when there is a repeated transmission scenario of PUCCH or PUSCH, the rate at which the terminal device sends the uplink signal with high priority to the network device may still be ensured when the power is limited.

Or taking interaction between any one of the terminal devices 103 and the first network device 101 and the second network device 102 as an example, in another possible implementation manner in this embodiment of the present application, the terminal device 103 determines a first transmission power of a first uplink signal to be sent to the first network device 101 in a first time unit, and the terminal device 103 determines a second transmission power of a second uplink signal to be sent to the second network device 102 in a second time unit, where the first time unit is an N1 time unit in N1 time units on the first carrier, the second time unit is an N2 time unit in N2 time units on the second carrier, where the first time unit and the second time unit have overlapping portions in time, where N1, N2, N1, and N2 are all positive integers, and where N1 time units are time units configured to send the first uplink signal and N2 time units are time units configured to send the second uplink signal. Further, in the case where the sum of the first transmission power and the second transmission power is larger than the maximum transmission power of the terminal device 103, if n1=n2 and N1< N2, or if N1 is larger than N2: the terminal device 103 transmits the second uplink signal at a fourth transmission power in the second time unit, where the fourth transmission power is smaller than the second transmission power, and the first time unit does not carry the first uplink signal. The specific implementation of this scheme will be described in detail in the following method embodiments, which are not described herein. In this scheme, N1 may be the number of repetitions of the first uplink signal, N2 may be the number of repetitions of the second uplink signal, and N1< N2 may represent that the first transmission time of the first uplink signal is later than the first transmission time of the second uplink signal. Therefore, the scheme can be understood as determining the priority of the uplink signal (i.e. the case where N1 is greater than N2) based on the repetition times of the first uplink signal and the second uplink signal, and further determining the transmission power of the second uplink signal and whether to transmit the first uplink signal. For example, in this embodiment, the priority of the signal with the larger repetition number is lower than the priority of the signal with the smaller repetition number, and the uplink signal with the lower priority is not transmitted (i.e., the transmission power of the uplink signal with the lower priority may be regarded as being reduced to 0), so that the transmission power of the uplink signal with the higher priority is preferentially ensured. Alternatively, the priority of the uplink signal is determined based on the first transmission time of the first uplink signal and the second uplink signal when the repetition times of the first uplink signal and the second uplink signal are equal (i.e., the case where n1=n2 and N1< N2). In this embodiment, the signal with the earlier first transmission time has a higher priority than the signal with the later first transmission time, and the uplink signal with the lower priority is not transmitted (i.e., the transmission power of the uplink signal with the lower priority may be regarded as being reduced to 0), so that the transmission power of the uplink signal with the higher priority is preferentially ensured. In summary, through the above scheme, when there is a repeated transmission scenario of PUCCH or PUSCH, the rate at which the terminal device sends the uplink signal with high priority to the network device may still be ensured when the power is limited.

It can be understood that the embodiment of the present invention essentially uses the repetition number of the signal as a priority factor for the terminal device to perform uplink power control. In the above-described scheme, the signal with the large repetition number may have a lower priority than the signal with the small repetition number; in the case where the repetition times are the same, the priority of the signal whose first transmission time is earlier is higher than the priority of the signal whose first transmission time is later. For example, the signal having a large number of repetitions may have a higher priority than the signal having a small number of repetitions, so that the terminal device may implement the method according to the priority when performing uplink power control. Alternatively, for the case that the repetition times are the same, the priority of the signal with the early first transmission time may be lower than the priority of the signal with the late first transmission time, and the specific implementation manner may refer to the above description and will not be repeated here.

Alternatively, in the communication system 10 shown in fig. 1, one of the first network device and the second network device may also be referred to as a primary network device, and the other network device may also be referred to as a secondary network device. The primary network device and the secondary network device may be network devices with the same radio access technology, such as network devices of all NR systems, network devices of all long term evolution (long term evolution, abbreviated as LTE) systems, network devices of all future systems, and so on. Alternatively, the primary network device and the secondary network device may be network devices of different radio access technologies, such as a network device of an NR system and a network device of an LTE system; or one is a network device of an NR system and one is a network device of a future system; or one is a network device of the LTE system, one is a network device of a future system, etc., which is not particularly limited herein. For example, in the evolution process of the wireless communication system, an operator deploys a 5G NR system and an LTE system at the same time, and a terminal device also supports network devices that access to the LTE system and network devices of the NR system at the same time, and since LTE is also called evolved universal terrestrial radio access (evolved universal terrestrial radio access, E-UTRA), this access mode is called evolved universal terrestrial radio access and new air-interface dual connectivity (E-UTRA NR dual connectivity, EN-DC). In EN-DC mode, the network device of the LTE system is a primary network device, the network device of the NR system is a secondary network device, and of course, with the evolution of the system, the new air interface and the evolved universal terrestrial radio access dual connection (NR E-UTRA dual connectivity, NE-DC) may also be supported in the future, i.e. the network device of the NR system is a primary network device, and the network device of the LTE system is a secondary network device. Since both EN-DC and NE-DC end devices will access network devices of two different radio access technologies, these DC modes may also be collectively referred to as multiple radio access technology dual connectivity (multi-RAT dual connectivity, MR-DC). In addition, for terminal devices supporting only the NR system, they can also access network devices of two different NR systems at the same time, such a connection being called NR-nrdc.

Meanwhile, for a wireless communication system, frequency division duplex (frequency division duplex, FDD) mode and time division duplex (time division duplex, TDD) mode can be mainly classified according to the difference of duplex modes, wherein for a wireless communication system operating in TDD mode, the system generally comprises only one operating frequency band, so that the frequency band is also called unpaired frequency band. For a system using unpaired frequency bands, in a period of time, the whole working frequency band is only used for downlink communication or only used for uplink communication in an area covered by the same network equipment; for wireless communication systems operating in FDD mode, the system typically includes two paired frequency bands for communication, one for network device to terminal device downstream communication and the other for terminal device to network device upstream communication. Currently, a typical deployment is where the NR system is deployed in TDD mode on unpaired frequency bands, such as frequency bands around 3.5 GHz. In this deployment scenario, the cells in both the MCG and SCG of the terminal device operating in NR-NR DC mode are in TDD mode. Of course, other deployment modes are possible, and embodiments of the present application are not specifically limited thereto.

Furthermore, in one possible implementation, the first network device and the second network device may be deployed on the same site, sharing the same set of hardware devices, as shown in fig. 2.

The schematic structure of the network device and the terminal device shown in fig. 2 may be as shown in fig. 3. Wherein the terminal device comprises at least one processor (illustrated in fig. 3 by way of example as comprising one processor 401) and at least one transceiver (illustrated in fig. 3 by way of example as comprising one transceiver 403). Optionally, the terminal device may further include at least one memory (illustrated in fig. 3 by way of example as including a memory 402), at least one output device (illustrated in fig. 3 by way of example as including an output device 404), and at least one input device (illustrated in fig. 3 by way of example as including an input device 405).

The processor 401, the memory 402 and the transceiver 403 are connected by a communication line. The communication line may include a pathway to communicate information between the aforementioned components.

The processor 401 may be a general purpose central processing unit (central processing unit, CPU), a microprocessor, an Application Specific Integrated Circuit (ASIC), or one or more integrated circuits for controlling the execution of programs in the present application. In a specific implementation, the processor 401 may also include a plurality of CPUs as one embodiment, and the processor 401 may be a single-core (single-CPU) processor or a multi-core (multi-CPU) processor. A processor herein may refer to one or more devices, circuits, or processing cores for processing data (e.g., computer program instructions).

The memory 402 may be a device having a memory function. For example, but not limited to, a read-only memory (ROM) or other type of static storage device that can store static information and instructions, a random access memory (random access memory, RAM) or other type of dynamic storage device that can store information and instructions, an electrically erasable programmable read-only memory (electrically erasable programmable read-only memory, EEPROM), a compact disc read-only memory (compact disc read-only memory) or other optical disk storage, optical disk storage (including compact discs, laser discs, optical discs, digital versatile discs, blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer. The memory 402 may be independent and connected to the processor 401 via a communication line. Memory 402 may also be integrated with processor 401.

The memory 402 is used for storing computer-executable instructions for executing the embodiments of the present application, and is controlled by the processor 401 to execute the instructions. Specifically, the processor 401 is configured to execute computer-executable instructions stored in the memory 402, thereby implementing the signaling method described in the embodiments of the present application. Alternatively, the computer-executable instructions in the embodiments of the present application may be referred to as application program code or computer program code, which is not specifically limited in the embodiments of the present application.

The transceiver 403 may use any transceiver-like device for communicating with other devices or communication networks, such as ethernet, radio access network (radio access network, RAN), or wireless local area network (wireless local area networks, WLAN), etc. The transceiver 403 includes a transmitter (Tx) and a receiver (Rx).

The output device 404 communicates with the processor 401 and may display information in a variety of ways. For example, the output device 404 may be a liquid crystal display (liquid crystal display, LCD), a light emitting diode (light emitting diode, LED) display device, a Cathode Ray Tube (CRT) display device, or a projector (projector), or the like.

The input device 405 is in communication with the processor 401 and may accept user input in a variety of ways. For example, the input device 405 may be a mouse, a keyboard, a touch screen device, a sensing device, or the like.

The network device includes one or more processors (illustrated in fig. 3 by way of example as including a primary processor 301 and a secondary processor 305), at least one transceiver (illustrated in fig. 3 by way of example as including a transceiver 303), and at least one network interface (illustrated in fig. 3 by way of example as including a network interface 304). Optionally, the network device may also include at least one memory (illustrated in fig. 3 by way of example as including one memory 302). Wherein the main processor 301, the sub processor 305, the memory 302, the transceiver 303 and the network interface 304 are connected by communication lines. The network interface 304 is used to connect with a core network device through a link (e.g., S1 interface) or connect with a network interface of another network device (not shown in fig. 3) through a wired or wireless link (e.g., X2 interface), which is not specifically limited in this embodiment of the present application. In addition, the descriptions of the main processor 301, the auxiliary processor 305, the memory 302 and the transceiver 303 may refer to the descriptions of the processor 401, the memory 402 and the transceiver 403 in the above terminal device, and will not be repeated herein.

In another possible implementation, the first network device and the second network device may be deployed on different sites, using different sets of hardware devices, as shown in fig. 4.

The schematic structure of the first network device, the second network device, and the terminal device shown in fig. 4 may be as shown in fig. 5. The schematic structure of the terminal device may refer to the schematic structure of the terminal device shown in fig. 3, and will not be described herein.

The first network device includes one or more processors (illustrated in fig. 5 by way of example as including one processor 301 a), at least one transceiver (illustrated in fig. 5 by way of example as including one transceiver 303 a), and at least one network interface (illustrated in fig. 5 by way of example as including one network interface 304 a). Optionally, the first network device may further include at least one memory (illustrated in fig. 5 by way of example as including one memory 302 a). The processor 301a, the memory 302a, the transceiver 303a and the network interface 304a are connected by communication lines. The network interface 304a is used to connect with a core network device through a link (e.g., S1 interface) or connect with a network interface of another network device through a wired or wireless link (e.g., X2 interface) (not shown in fig. 5), which is not specifically limited in this embodiment of the present application. In addition, the description of the processor 301a, the memory 302a and the transceiver 303a may refer to the description of the processor 401, the memory 402 and the transceiver 403 in the embodiment shown in fig. 3, which is not repeated herein.

The second network device includes one or more processors (illustrated in fig. 5 by way of example as including one processor 301 b), at least one transceiver (illustrated in fig. 5 by way of example as including one transceiver 303 b), and at least one network interface (illustrated in fig. 5 by way of example as including one network interface 304 b). Optionally, the second network device may further include at least one memory (illustrated in fig. 5 by way of example as including one memory 302 b). The processor 301b, the memory 302b, the transceiver 303b, and the network interface 304b are connected by communication lines. The network interface 304b is used to connect with a core network device through a link (e.g., S1 interface) or connect with a network interface of another network device through a wired or wireless link (e.g., X2 interface) (not shown in fig. 5), which is not specifically limited in this embodiment of the present application. In addition, the description of the processor 301b, the memory 302b and the transceiver 303b may refer to the description of the processor 401, the memory 402 and the transceiver 403 in the embodiment shown in fig. 3, which is not repeated herein.

Optionally, the network device in the embodiment of the present application (including the first network device or the second network device) is a device for accessing a terminal device to a wireless network, which may be an evolved node b (evolutional Node B, eNB or eNodeB) in an LTE system; or a base station in a 5G network or future evolved public land mobile network (public land mobile network, PLMN), broadband network service gateway (broadband network gateway, BNG), converged switch or non-third generation partnership project (3rd generation partnership project,3GPP) access device, etc., as embodiments of the present application are not specifically limited. Alternatively, the base station in the embodiments of the present application may include various forms of base stations, for example: macro base stations, micro base stations (also referred to as small stations), relay stations, access points, etc., as embodiments of the present application are not specifically limited.

Alternatively, the terminal device in the embodiment of the present application may be a device for implementing a wireless communication function, for example, a terminal or a chip that may be used in the terminal. The terminal may be a User Equipment (UE), an access terminal, a terminal unit, a terminal station, a mobile station, a remote terminal, a mobile device, a wireless communication device, a terminal agent, a terminal apparatus, or the like in a 5G network or a future evolved PLMN. An access terminal may be a cellular telephone, cordless telephone, session initiation protocol (session initiation protocol, SIP) phone, wireless local loop (wireless local loop, WLL) station, personal digital assistant (personal digital assistant, PDA), handheld device with wireless communication capability, computing device or other processing device connected to a wireless modem, vehicle-mounted device or wearable device, virtual Reality (VR) terminal device, augmented reality (augmented reality, AR) terminal device, wireless terminal in industrial control (industrial control), wireless terminal in self-driving (self-driving), wireless terminal in telemedicine (remote medium), wireless terminal in smart grid (smart grid), wireless terminal in transportation security (transportation safety), wireless terminal in smart city (smart city), wireless terminal in smart home (smart home), etc. The terminal may be mobile or stationary.

Alternatively, the network device (including the first network device or the second network device) and the terminal device in the embodiments of the present application may also be referred to as a communication apparatus, which may be a general-purpose device or a special-purpose device, which is not specifically limited in the embodiments of the present application.

With reference to the schematic structural diagram of the terminal device shown in fig. 3 or fig. 5, fig. 6 is an exemplary specific structural form of the terminal device provided in the embodiment of the present application.

Wherein in some embodiments the functionality of processor 401 in fig. 3 or 5 may be implemented by processor 110 in fig. 6.

In some embodiments, the functionality of the transceiver 403 in fig. 3 or 5 may be implemented by the antenna 1, the antenna 2, the mobile communication module 150, the wireless communication module 160, etc. in fig. 6.

Wherein the antennas 1 and 2 are used for transmitting and receiving electromagnetic wave signals. Each antenna in the terminal device may be used to cover a single or multiple communication bands. Different antennas may also be multiplexed to improve the utilization of the antennas. For example: the antenna 1 may be multiplexed into a diversity antenna of a wireless local area network. In other embodiments, the antenna may be used in conjunction with a tuning switch.

The mobile communication module 150 may provide a solution for wireless communication including 2G/3G/4G/5G or the like applied on a terminal device. The mobile communication module 150 may include at least one filter, switch, power amplifier, low noise amplifier (low noise amplifier, LNA), etc. The mobile communication module 150 may receive electromagnetic waves from the antenna 1, perform processes such as filtering, amplifying, and the like on the received electromagnetic waves, and transmit the processed electromagnetic waves to the modem processor for demodulation. The mobile communication module 150 can amplify the signal modulated by the modem processor, and convert the signal into electromagnetic waves through the antenna 1 to radiate. In some embodiments, at least some of the functional modules of the mobile communication module 150 may be disposed in the processor 110. In some embodiments, at least some of the functional modules of the mobile communication module 150 may be provided in the same device as at least some of the modules of the processor 110.

The wireless communication module 160 may provide solutions for wireless communication including wireless local area network (wireless local area networks, WLAN) (e.g., wi-Fi network), bluetooth (BT), global navigation satellite system (global navigation satellite system, GNSS), frequency modulation (frequency modulation, FM), near field wireless communication (near field communication, NFC), infrared technology (IR), etc. applied on the terminal device. The wireless communication module 160 may be one or more devices that integrate at least one communication processing module. The wireless communication module 160 receives electromagnetic waves via the antenna 2, modulates the electromagnetic wave signals, filters the electromagnetic wave signals, and transmits the processed signals to the processor 110. The wireless communication module 160 may also receive a signal to be transmitted from the processor 110, frequency modulate it, amplify it, and convert it to electromagnetic waves for radiation via the antenna 2. When the terminal device is a first device, the wireless communication module 160 may provide a solution for NFC wireless communication applied on the terminal device, meaning that the first device comprises an NFC chip. The NFC chip can improve NFC wireless communication functions. When the terminal device is a second device, the wireless communication module 160 may provide a solution for NFC wireless communication applied on the terminal device, meaning that the first device includes an electronic tag (e.g., radio frequency identification (radio frequency identification, RFID) tag). The NFC chips of other devices are close to the electronic tag and can conduct NFC wireless communication with the second device.

In some embodiments, the antenna 1 of the terminal device is coupled to the mobile communication module 150 and the antenna 2 is coupled to the wireless communication module 160 so that the terminal device can communicate with the network and other devices through wireless communication technology. The wireless communication techniques may include the Global System for Mobile communications (global system for mobile communications, GSM), general packet radio service (general packet radio service, GPRS), code division multiple access (code division multiple access, CDMA), wideband code division multiple access (wideband code division multiple access, WCDMA), time division code division multiple access (time-division code division multiple access, TD-SCDMA), long term evolution (long term evolution, LTE), BT, GNSS, WLAN, NFC, FM, or IR techniques, among others. The GNSS may include a global satellite positioning system (global positioning system, GPS), a global navigation satellite system (global navigation satellite system, GLONASS), a beidou satellite navigation system (beidou navigation satellite system, BDS), a quasi zenith satellite system (quasi-zenith satellite system, QZSS) or a satellite based augmentation system (satellite based augmentation systems, SBAS).

In some embodiments, the functionality of memory 402 in fig. 3 or 5 may be implemented by internal memory 121 in fig. 6, or an external memory (e.g., micro SD card) to which external memory interface 120 is connected, or the like.

In some embodiments, the functionality of the output device 404 in fig. 3 or 5 may be implemented by the display 194 in fig. 6. Wherein the display screen 194 is used to display images, videos, etc. The display 194 includes a display panel.

In some embodiments, the functionality of the input device 405 in fig. 3 or 5 may be implemented by a mouse, a keyboard, a touch screen device, or the sensor module 180 in fig. 6. By way of example, as shown in fig. 6, the sensor module 180 may include, for example, one or more of a pressure sensor 180A, a gyro sensor 180B, a barometric sensor 180C, a magnetic sensor 180D, an acceleration sensor 180E, a distance sensor 180F, a proximity sensor 180G, a fingerprint sensor 180H, a temperature sensor 180J, a touch sensor 180K, an ambient light sensor 180L, and a bone conduction sensor 180M, which is not particularly limited in this embodiment of the present application.

In some embodiments, as shown in fig. 6, the terminal device may further include one or more of an audio module 170, a camera 193, an indicator 192, a motor 191, a key 190, a SIM card interface 195, a USB interface 130, a charge management module 140, a power management module 141, and a battery 142, where the audio module 170 may be connected to a speaker 170A (also referred to as a "speaker"), a receiver 170B (also referred to as an "earpiece"), a microphone 170C (also referred to as a "microphone", "microphone") or an earphone interface 170D, etc., which embodiments of the present application are not particularly limited.

It will be appreciated that the structure shown in fig. 6 does not constitute a specific limitation on the terminal device. For example, in other embodiments of the present application, a terminal device may include more or fewer components than shown, or certain components may be combined, or certain components may be split, or different arrangements of components. The illustrated components may be implemented in hardware, software, or a combination of software and hardware.

The signaling method provided in the embodiment of the present application will be described in detail below with reference to fig. 1 to 6 by taking interaction between the terminal device 103 and the first network device 101 and the second network device 102 as an example.

It should be noted that, in the embodiments described below, the names of the messages between the network elements or the names of the parameters in the messages are only an example, and may be other names in specific implementations, which are not limited in the embodiments of the present application.

As shown in fig. 7, a signal transmission method provided in an embodiment of the present application includes the following steps:

s701, the first network device sends first indication information to the terminal device. The terminal device receives first indication information from the first network device. Wherein the second indication information indicates N1 time units on the first carrier on which the first uplink signal is transmitted.

S702, the terminal equipment determines N1 time units on a first carrier wave for transmitting a first uplink signal according to the first indication information, wherein N1 is a positive integer.

S703, the second network device sends the second indication information to the terminal device. The terminal device receives second indication information from the second network device. Wherein the second indication information indicates N2 time units on a second carrier on which the second uplink signal is transmitted.

S704, the terminal equipment determines N2 time units on a second carrier wave for transmitting a second uplink signal according to the second indication information, wherein N2 is a positive integer.

The description of the steps S701 to S704 may refer to the communication system shown in fig. 1, and will not be repeated here.

In the steps S701 to S704, the N1 time units on the first carrier transmitting the first uplink signal means that the first uplink signal is allowed to be transmitted on each of the N1 time units on the first carrier, that is, the first uplink signal is allowed to be repeatedly transmitted N1 times in the N1 time units on the first carrier.

In the steps S701 to S704, the N2 time units on the second carrier transmitting the second uplink signal means that the second uplink signal is allowed to be transmitted on each of the N2 time units on the second carrier, that is, the second uplink signal is allowed to be repeatedly transmitted N2 times in the N2 time units on the second carrier.

Optionally, the first uplink signal or the second uplink signal in the steps S701 to S704 may be, for example, PUCCH, PUSCH, physical Random Access Channel (PRACH), SRS, or the like.

Alternatively, the first uplink signal and the second uplink signal in the steps S701 to S704 may be the same type of uplink signal, or may be different types of uplink signals, which is not specifically limited in the embodiment of the present application.

Alternatively, the first carrier and the second carrier in steps S701 to S704 are different carriers, and may be carriers belonging to different CGs, for example, one of the first carrier and the second carrier belongs to the MCG, and the other belongs to the SCG. Or, for example, the first carrier and the second carrier are two different SCGs.

Alternatively, the first carrier and the second carrier in steps S701 to S704 may belong to the same radio access technology, for example, the first carrier and the second carrier are both carriers of the NR system; alternatively, the first carrier and the second carrier in steps S701 to S704 may belong to different radio access technologies, for example, one of the first carrier and the second carrier is a carrier of the NR system, and the other is a carrier of the LTE system.

Optionally, in the steps S701 to S704, the unit of the time unit may be ms, a subframe, a slot, a minislot, one symbol or a plurality of consecutive symbols, etc., which are not limited herein. The unit of the time units in the N1 time units may be the same as or different from the unit of the time units in the N2 time units, and the specific limitation is not given here.

For example, taking the example that the unit of time unit in N1 time units and the unit of time unit in N2 time units are ms, where n1=5, n2=3, the configuration diagrams of N1 time units and N2 time units may be as shown in fig. 8a, 8b, 8c or 8 d. Wherein, fig. 8a illustrates a scenario in which N1 time units and N2 time units have the same starting positions; FIG. 8b illustrates a scenario where the starting position of N1 time units is later than the starting position of N2 time units, and the ending position of N1 time units is later than the ending position of N2 time units; FIG. 8c illustrates a scenario where the starting position of N1 time units is earlier than the starting position of N2 time units, and the ending position of N1 time units is later than the ending position of N2 time units; fig. 8d illustrates a scenario in which the start position of N1 time units is earlier than the start position of N2 time units, and the end position of N1 time units is earlier than the end position of N2 time units.

Alternatively, for example, taking the unit of time units in N1 time units and the unit of time units in N2 time units as ms as examples, where n1=3, n2=3, the configuration diagrams of N1 time units and N2 time units may be as shown in fig. 9a, 9b or 9 c. Fig. 9a illustrates a scenario in which the starting positions of N1 time units and N2 time units are the same, and the ending positions are the same; fig. 9b illustrates a scenario in which the start position of N1 time units is later than the start position of N2 time units, and the end position of N1 time units is later than the end position of N2 time units; fig. 9c illustrates a scenario in which the start position of N1 time units is earlier than the start position of N2 time units, and the end position of N1 time units is earlier than the end position of N2 time units.

It should be noted that fig. 8a to 8d and fig. 9a to 9c are only exemplary, and several scenarios in which N1 time units and N2 time units have overlapping portions are given, however, N1 time units and N2 time units may not have overlapping portions, and the embodiment of the present application does not describe the scenario in detail, but only the scenario in which N1 time units and N2 time units have overlapping portions is described in detail herein.

It should be noted that, the steps S701 to S704 are optional steps, and the terminal device may also determine N1 time units for transmitting the first uplink signal and N2 time units for transmitting the second uplink signal in other manners, which is not specifically limited in the embodiment of the present application.

Optionally, in the embodiment of the present application, there is no necessary execution sequence between the step S701 and the step S703, which may be that the step S701 is executed first, then the step S703 is executed, or that the step S703 is executed first, then the step S701 is executed. Steps S701 and S703 may also be performed simultaneously, and are not particularly limited herein.

S705, the terminal device determines a first transmission power of a first uplink signal to be transmitted to the first network device in the first time unit, and the terminal device determines a second transmission power of a second uplink signal to be transmitted to the second network device in the second time unit.

The first time unit is the N1 time unit in the N1 time units on the first carrier, the second time unit is the N2 time unit in the N2 time units on the second carrier, the first time unit and the second time unit have overlapping parts in time, and N1 and N2 are positive integers.

For example, assuming that the configuration diagrams of N1 time units and N2 time units are shown in fig. 8c, n1=3, n2=2, the diagrams of the first time units and the second time units may be shown in fig. 10 a. Wherein a portion of the first time cells overlaps a portion of the second time cells.

Alternatively, for example, assuming that the configuration diagrams of N1 time units and N2 time units are shown in fig. 9a, n1=2, n2=2, the diagrams of the first time unit and the second time unit may be shown in fig. 10 b. Wherein the first time unit and the second time unit are completely overlapped.

Alternatively, for example, assuming that the configuration diagrams of N1 time units and N2 time units are shown in fig. 9b, n1=2, n2=3, the diagrams of the first time unit and the second time unit may be shown in fig. 10 c. Wherein a portion of the first time cells overlaps a portion of the second time cells.

Optionally, taking the first uplink signal and the second uplink signal as PUSCH as an example, for the NR system, referring to section 7.1.1 in technical specification 38.213v15.2.0 of 3GPP, the terminal device determines the power P for transmitting PUSCH _PUSCH,b,f,c (i,j,q _d L) can be determined by the following formula:

The explanation of each parameter in the above formula may refer to the explanation in the technical specification, and will not be repeated here. The first transmission power may be P _{O_PUSCH,b,f,c} (j) The second transmission power may be α _b,f,c (j) A. The invention relates to a method for producing a fibre-reinforced plastic composite Taking into account P _{O_PUSCH,b,f,c} (j) Is two power parameters P _{O_NOMINAL_PUSCH,f,c} (j) And P _{O_UE_PUSCH,b,f,c} (j) And (refer to technical specification 38.213v15.2.0 of 3 GPP), so the first transmission power may be P here _{O_NOMINAL_PUSCH,f,c} (j) Or P _{O_UE_PUSCH,b,f,c} (j)。

In the case that the sum of the first transmission power and the second transmission power is greater than the maximum transmission power of the terminal device, if n1=n2 and N1< N2, or if N1 is greater than N2, the signal transmission method provided in the embodiment of the present application further includes the following steps:

in a possible implementation manner, the signal sending method provided in the embodiment of the present application further includes the following steps S706 to S708:

s706, the terminal equipment transmits a second uplink signal to the second network equipment at a second transmission power in a second time unit. The second network device receives a second uplink signal from the terminal device in a second time unit.

And S707, the terminal equipment determines a third transmission power of the first uplink signal to be transmitted to the first network equipment in the first time unit, wherein the third transmission power is smaller than the first transmission power, and the sum of the first transmission power and the second transmission power is not larger than the maximum transmission power of the terminal equipment.

And S708, the terminal equipment transmits a first uplink signal to the first network equipment at a third transmission power in the first time unit. The first network device receives a first uplink signal from the terminal device in a first time unit.

Optionally, in the embodiment of the present application, after determining the third transmission power of the first uplink signal to be sent to the first network device in the first time unit, the terminal device may first determine whether a power difference between the third transmission power and the first transmission power is less than or equal to a first threshold, and if the power difference between the third transmission power and the first transmission power is less than or equal to the first threshold, the terminal device executes step S708, otherwise, the terminal device does not send the first uplink signal in the first time unit.

It should be understood that the essence of this scheme is that in the case of transmitting after reducing the transmission power for the first uplink signal, if the transmission power is reduced too much, the signal quality of the first uplink signal should be poor, and at this time, it is not recommended to transmit after reducing the transmission power for the first uplink signal, but the first uplink signal is not transmitted directly; if the transmission power is not reduced much, the transmission power of the first uplink signal may be reduced and transmitted.

Alternatively, in the embodiment of the present application, if N1 is a positive integer greater than 1, the terminal device executes steps S707 and S708 described above; if N1 is equal to 1, after determining the third transmission power of the first uplink signal to be transmitted to the first network device in the first time unit, the terminal device may first determine whether the power difference between the third transmission power and the first transmission power is less than or equal to the first threshold, and if the power difference between the third transmission power and the first transmission power is less than or equal to the first threshold, the terminal device executes step S708, otherwise, the terminal device does not transmit the first uplink signal in the first time unit.

It should be understood that the essence of this scheme is that, as long as the first uplink signal can be transmitted repeatedly a plurality of times, an operation of transmitting after reducing the transmission power of the first uplink signal in the first time unit may be performed. After the first network device receives the first uplink signal in the first time unit, the first network device can analyze the signal by combining the first uplink signals repeatedly sent by other time units in the N1 time units, so that the first uplink signal obtained by analysis is more accurate.

Alternatively, in the embodiment of the present application, the power difference between the third transmission power and the first transmission power may be a logarithmic value, for example, the first transmission power is 20dB, the third transmission power is 17dB, and the power difference between the third transmission power and the first transmission power is 3dB. Alternatively, the power difference between the third transmission power and the first transmission power may be a difference of linear values, for example, if the first transmission power is 0.05W and the third transmission power is 0.03W, the power difference between the third transmission power and the first transmission power is 0.02W.

Alternatively, in another possible implementation manner, the signal sending method provided in the embodiment of the present application further includes the following step S709:

and S709, the terminal equipment transmits a second uplink signal to the second network equipment at a second transmission power in a second time unit. The second network device receives a second uplink signal from the terminal device in a second time unit.

In this case, the first time unit does not carry the first uplink signal, i.e. the terminal device does not transmit the first uplink signal in the first time unit.

Or, in another possible implementation manner, the signal sending method provided in the embodiment of the present application further includes the following steps S710 to S711:

s710, the terminal equipment determines a fourth transmitting power of a second uplink signal to be transmitted to the second network equipment in the second time unit, wherein the fourth transmitting power is smaller than the second transmitting power.

Optionally, the transmission power of the terminal device for transmitting the second uplink signal is reduced from the original second transmission power to the fourth transmission power, so that the total power for transmitting the first uplink signal and the second uplink signal does not exceed the maximum transmission power.

And S711, the terminal equipment transmits a second uplink signal to the second network equipment in the second time unit at the fourth transmission power. The second network device receives a second uplink signal from the terminal device in a second time unit.

It should be understood that, in the above scheme, when N1 is greater than N2, the essence of preferentially transmitting the second uplink signal is that the priority of the uplink signal with the small repetition number is higher than the priority of the uplink signal with the large repetition number. For example, the priority of the PUSCH of a single transmission is higher than that of the PUSCH of a repeated transmission, or the priority of the PUCCH of a single transmission is higher than that of the PUCCH of a repeated transmission.

Of course, alternatively, in a scenario where the priority of the uplink signal is determined according to the repetition number, the priority of the uplink signal with a large repetition number may be higher than the priority of the uplink signal with a small repetition number. For example, the priority of the PUSCH of a single transmission is lower than that of the PUSCH of a repeated transmission, or the priority of the PUCCH of a single transmission is lower than that of the PUCCH of a repeated transmission. In addition, after determining the priority of the uplink signal, the manner of signal transmission according to the priority of the uplink signal is similar to the above-mentioned method embodiment, and only the first uplink signal and the second uplink signal need to be interchanged, which is not described herein.

It should be understood that, in the above scheme, when n1=n2 and N1< N2, the essence of transmitting the second uplink signal preferentially is that, when the repetition times of the uplink signals are equal, the priority of the uplink signal before the first transmission time is higher than the priority of the uplink signal after the first transmission time. For example, in fig. 10c, n1=n2 and N1< N2, the first transmission time of the second uplink signal is before the first transmission time of the first uplink signal, and therefore the priority of the second uplink signal is higher than that of the first uplink signal.

Of course, alternatively, in a case where the priority of the uplink signal is determined according to the repetition number, if the repetition number of the uplink signal is equal, the priority of the uplink signal after the first transmission time may be higher than the priority of the uplink signal before the first transmission time. For example, in fig. 10c, n1=n2 and N1< N2, the first transmission time of the second uplink signal is before the first transmission time of the first uplink signal, and thus the priority of the second uplink signal is lower than that of the first uplink signal. In addition, after determining the priority of the uplink signal, the manner of signal transmission according to the priority of the uplink signal is similar to the above-mentioned method embodiment, and only the first uplink signal and the second uplink signal need to be interchanged, which is not described herein.

Based on the scheme, when the repeated transmission scene of the PUCCH or the PUSCH exists, the rate of the terminal equipment transmitting the uplink signal with high priority to the network equipment can be still ensured when the power is limited. The related art effect part may refer to the communication system part shown in fig. 1, and will not be described herein.

The actions of the terminal device in steps S701 to S711 may be called by the processor 401 in the terminal device shown in fig. 3 or fig. 5 to instruct the network device to execute the application program code stored in the memory 402, which is not limited in this embodiment.

Optionally, in this embodiment of the present application, the terminal device may determine the priority of the first uplink signal and the second uplink signal according to the type of the first uplink signal and the type of the second uplink signal, where the priority order is described in the background technology and is not described herein. If the type of the first uplink signal and the type of the second uplink signal are the same, the priorities of the first uplink signal and the second uplink signal may be further determined according to the manner in the embodiment shown in fig. 7.

Alternatively, in the embodiment of the present application, if the priorities of the first uplink signal and the second uplink signal cannot be determined according to the manner in the embodiment shown in fig. 7, for example, n1=n2 and n1=n2, the terminal device may determine the priorities of the uplink signals according to the CGs corresponding to the first uplink signal and the second uplink signal. For example, the protocol defines that the priority of the uplink signal sent on the carrier in the MCG is higher than the priority of the uplink signal sent on the carrier in the SCG.

Alternatively, in the embodiment of the present application, before determining the priorities of the first uplink signal and the second uplink signal according to the manner in the embodiment shown in fig. 7, the priorities of the first uplink signal and the second uplink signal may also be determined by other conditions, and the transmission power of the uplink signal with a low priority may be reduced or the uplink signal with a low priority may not be transmitted, so that the transmission power of the uplink signal with a high priority may be preferentially ensured, and at the same time, the rate at which the terminal device transmits the uplink signal to the network device may be improved.

Alternatively, in the embodiment of the present application, if the priorities of the first uplink signal and the second uplink signal cannot be determined according to the manner in the embodiment shown in fig. 7, for example, n1=n2 and n1=n2, the priorities of the first uplink signal and the second uplink signal may be determined by other conditions, and the transmission power of the uplink signal with a low priority is reduced or the uplink signal with a low priority is not transmitted, so that the transmission power of the uplink signal with a high priority is preferentially ensured, and meanwhile, the rate of the terminal device transmitting the uplink signal to the network device may be improved.

Alternatively, in the embodiment of the present application, the priorities of the first uplink signal and the second uplink signal may be determined not according to the manner in the embodiment shown in fig. 7, but by determining the priorities of the first uplink signal and the second uplink signal through other conditions, and reducing the transmission power of the uplink signal with low priority or not transmitting the uplink signal with low priority, so as to preferentially ensure the transmission power of the uplink signal with high priority, and at the same time, may increase the rate at which the terminal device transmits the uplink signal to the network device.

It will be appreciated that in the various embodiments above, the methods and/or steps implemented by the terminal device may also be implemented by components (e.g., chips or circuits) available to the terminal device.

The above description has been presented mainly from the point of interaction between the network elements. Correspondingly, the embodiment of the application also provides a communication device which is used for realizing the various methods. The communication device may be the terminal device in the above embodiment of the method, or a device comprising the terminal device, or a component usable with the terminal device. It will be appreciated that the communication device, in order to achieve the above-described functions, comprises corresponding hardware structures and/or software modules performing the respective functions. Those of skill in the art will readily appreciate that the elements and algorithm steps of the examples described in connection with the embodiments disclosed herein may be implemented as hardware or combinations of hardware and computer software. Whether a function is implemented as hardware or computer software driven hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

In the embodiment of the present application, the functional modules of the communication device may be divided according to the above embodiment of the method, for example, each functional module may be divided corresponding to each function, or two or more functions may be integrated into one processing module. The integrated modules may be implemented in hardware or in software functional modules. It should be noted that, in the embodiment of the present application, the division of the modules is schematic, which is merely a logic function division, and other division manners may be implemented in actual implementation.

For example, the communication device is taken as an example of the terminal device in the above method embodiment. Fig. 11 shows a schematic structural diagram of a terminal device 110. The terminal device 110 comprises a processing module 1101 and a transceiver module 1102. The transceiver module 1102, which may also be referred to as a transceiver unit, is configured to perform a transmitting and/or receiving function, and may be, for example, a transceiver circuit, a transceiver, or a communication interface.

The processing module 1101 is configured to determine a first transmission power of a first uplink signal to be transmitted to the first network device in a first time unit, and determine a second transmission power of a second uplink signal to be transmitted to the second network device in a second time unit, where the first time unit is an nth 1 time unit in N1 time units on the first carrier, the second time unit is an nth 2 time unit in N2 time units on the second carrier, the first time unit and the second time unit have overlapping portions in time, N1, N2, N1, and N2 are all positive integers, and N1 time units are time units configured to transmit the first uplink signal, and N2 time units are time units configured to transmit the second uplink signal.

In the case where the sum of the first transmission power and the second transmission power is greater than the maximum transmission power of the terminal device, if n1=n2 and N1< N2, or if N1 is greater than N2:

a transceiver module 1102, configured to transmit a second uplink signal at a second transmit power in a second time unit, where the first time unit carries a first uplink signal, and the transmit power of the first uplink signal is a third transmit power, and the third transmit power is less than the first transmit power; or the first time unit does not bear the first uplink signal; or,

and a transceiver module 1102, configured to transmit the second uplink signal at a fourth transmission power in the second time unit, where the fourth transmission power is smaller than the second transmission power, and the first time unit does not carry the first uplink signal.

All relevant contents of each step related to the above method embodiment may be cited to the functional description of the corresponding functional module, which is not described herein.

In the present embodiment, the terminal device 110 is presented in a form of dividing each functional module in an integrated manner. A "module" herein may refer to a particular ASIC, an electronic circuit, a processor and memory that execute one or more software or firmware programs, an integrated logic circuit, and/or other device that can provide the described functionality. In a simple embodiment, one skilled in the art will appreciate that the terminal device 110 may take the form of the terminal device shown in fig. 3 or 5.

For example, the processor 401 in the terminal device shown in fig. 3 or fig. 5 may cause the terminal device to perform the signaling method in the above-described method embodiment by calling the computer-executable instructions stored in the memory 402.

In particular, the functions/implementation of the processing module 1101 and the transceiver module 1102 in fig. 11 may be implemented by the processor 401 in the terminal device shown in fig. 3 or fig. 5 invoking computer executable instructions stored in the memory 402. Alternatively, the functions/implementation of the processing module 1101 in fig. 11 may be implemented by the processor 401 in the terminal device shown in fig. 3 or fig. 5 invoking a computer-implemented instruction stored in the memory 402, and the functions/implementation of the transceiver module 1102 in fig. 11 may be implemented by the transceiver 403 in the terminal device shown in fig. 3 or fig. 5.

Since the terminal device 110 provided in this embodiment can perform the above-mentioned signaling method, the technical effects that can be obtained by the method can be referred to the above-mentioned method embodiment, and will not be described herein.

Optionally, embodiments of the present application further provide a communication device (for example, the communication device may be a chip or a chip system), where the communication device includes a processor, and the method is used to implement any of the method embodiments described above. In one possible design, the communication device further includes a memory. The memory for storing the necessary program instructions and data, and the processor may invoke the program code stored in the memory to instruct the communication device to perform the method of any of the method embodiments described above. Of course, the memory may not be in the communication device. When the communication device is a chip system, the communication device may be formed by a chip, or may include a chip and other discrete devices, which is not specifically limited in the embodiments of the present application.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented using a software program, it may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the processes or functions described in accordance with embodiments of the present application are produced in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by a wired (e.g., coaxial cable, fiber optic, digital subscriber line (digital subscriber line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer readable storage medium may be any available medium that can be accessed by a computer or a data storage device including one or more servers, data centers, etc. that can be integrated with the medium. The usable medium may be a magnetic medium (e.g., a floppy disk, a hard disk, a magnetic tape), an optical medium (e.g., a DVD), or a semiconductor medium (e.g., a Solid State Disk (SSD)), or the like.

Although the present application has been described herein in connection with various embodiments, other variations to the disclosed embodiments can be understood and effected by those skilled in the art in practicing the claimed application, from a review of the figures, the disclosure, and the appended claims. In the claims, the word "comprising" does not exclude other elements or steps, and the "a" or "an" does not exclude a plurality. A single processor or other unit may fulfill the functions of several items recited in the claims. The mere fact that certain measures are recited in mutually different dependent claims does not indicate that a combination of these measures cannot be used to advantage.

Although the present application has been described in connection with specific features and embodiments thereof, it will be apparent that various modifications and combinations can be made without departing from the spirit and scope of the application. Accordingly, the specification and drawings are merely exemplary illustrations of the present application as defined in the appended claims and are considered to cover any and all modifications, variations, combinations, or equivalents that fall within the scope of the present application. It will be apparent to those skilled in the art that various modifications and variations can be made in the present application without departing from the spirit or scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims and the equivalents thereof, the present application is intended to cover such modifications and variations.

Claims

1. A signal sending method, characterized in that the method comprises:

Determine a first transmit power of a first uplink signal to be sent to a first network device in a first time unit, and determine a second transmit power of a second uplink signal to be sent to a second network device in a second time unit, wherein the first time unit is an n1th time unit among N1 time units on a first carrier, the second time unit is an n2th time unit among N2 time units on a second carrier, the first time unit and the second time unit have an overlapping portion in time, n1, n2, N1 and N2 are all positive integers, the N1 time units are time units configured to send the first uplink signal once in each of the N1 time units on the first carrier, and the N2 time units are time units configured to send the second uplink signal once in each of the N2 time units on the second carrier;

In the case where the sum of the first transmit power and the second transmit power is greater than the maximum transmit power of the terminal device, if N1=N2 and n1<n2, or if N1 is greater than N2:

sending the second uplink signal at the second transmit power in the second time unit, wherein the first time unit carries the first uplink signal, the transmit power of the first uplink signal is a third transmit power, and the third transmit power is less than the first transmit power; or, the first time unit does not carry the first uplink signal; or,

The second uplink signal is sent at a fourth sending power in the second time unit, wherein the fourth sending power is less than the second sending power, and the first time unit does not carry the first uplink signal.

2 . The method according to claim 1 , wherein when the first time unit carries the first uplink signal, a power difference between the third transmit power and the first transmit power is less than or equal to a first threshold.

3. The method according to claim 1, wherein the first time unit carries the first uplink signal, comprising:

If N1 is a positive integer greater than 1, the first time unit carries the first uplink signal, wherein the sum of the third transmit power and the second transmit power is less than the maximum transmit power.

4. The method according to claim 1, characterized in that

The type of the first uplink signal is the same as the type of the second uplink signal.

5. The method according to claim 1, characterized in that one of the first carrier and the second carrier belongs to a primary cell group MCG, and the other carrier belongs to a secondary cell group SCG;

Alternatively, the first carrier and the second carrier belong to two different SCGs respectively.

6. The method according to claim 1, wherein both the first carrier and the second carrier are carriers of a new radio interface NR system;

Alternatively, one of the first carrier and the second carrier is a carrier of the NR system, and the other carrier is a carrier of a long term evolution LTE system.

7. The method according to claim 1, further comprising:

First indication information is received from the first network device, wherein the first indication information is used to indicate the N1 time units.

8. The method according to any one of claims 1 to 7, further comprising:

Second indication information is received from the second network device, wherein the second indication information is used to indicate the N2 time units.

9. A communication device, characterized in that the communication device comprises: a processor and a transceiver;

The processor is configured to determine a first transmission power of a first uplink signal to be sent to a first network device in a first time unit, and to determine a second transmission power of a second uplink signal to be sent to a second network device in a second time unit, wherein the first time unit is an n1th time unit among N1 time units on a first carrier, the second time unit is an n2th time unit among N2 time units on a second carrier, the first time unit and the second time unit have an overlapping portion in time, n1, n2, N1 and N2 are all positive integers, the N1 time units are time units configured to send the first uplink signal once in each of the N1 time units on the first carrier, and the N2 time units are time units configured to send the second uplink signal once in each of the N2 time units on the second carrier;

The processor is further configured to, when the sum of the first transmit power and the second transmit power is greater than the maximum transmit power of the terminal device, if N1=N2 and n1<n2, or if N1 is greater than N2:

The second uplink signal is transmitted by the transceiver at the second transmit power in the second time unit, wherein the first time unit carries the first uplink signal, the transmit power of the first uplink signal is a third transmit power, and the third transmit power is less than the first transmit power; or, the first time unit does not carry the first uplink signal; or,

The second uplink signal is sent by the transceiver at a fourth sending power in the second time unit, wherein the fourth sending power is less than the second sending power, and the first time unit does not carry the first uplink signal.

10 . The communication device according to claim 9 , wherein when the first time unit carries the first uplink signal, a power difference between the third transmit power and the first transmit power is less than or equal to a first threshold.

11. The communication device according to claim 10, wherein the first time unit carries the first uplink signal, comprising:

12. The communication device according to claim 9, characterized in that:

13. The communication device according to claim 9, wherein one of the first carrier and the second carrier belongs to a primary cell group MCG, and the other carrier belongs to a secondary cell group SCG;

14. The communication device according to claim 9, wherein the first carrier and the second carrier are both carriers of a new radio interface NR system;

15. The communication device according to claim 9, characterized in that:

The transceiver is used to receive first indication information from the first network device, wherein the first indication information is used to indicate the N1 time units.

16. The communication device according to any one of claims 9 to 15, characterized in that:

The transceiver is used to receive second indication information from the second network device, wherein the second indication information is used to indicate the N2 time units.

17. A communication device, comprising:

a memory for storing instructions; and

A processor is used to execute the instruction, wherein when the instruction is executed, the device implements the signal sending method according to any one of claims 1 to 8.

18. A computer-readable storage medium, characterized by comprising instructions, which, when executed on a computer, enable the computer to execute the method according to any one of claims 1 to 8.

19. A communication system, characterized in that the communication system comprises: a terminal device, a first network device and a second network device;

The terminal device is used to determine a first transmission power of a first uplink signal to be sent to the first network device in a first time unit, and the terminal device is used to determine a second transmission power of a second uplink signal to be sent to the second network device in a second time unit, wherein the first time unit is the n1th time unit among the N1 time units on the first carrier, the second time unit is the n2th time unit among the N2 time units on the second carrier, the first time unit and the second time unit have an overlapping part in time, n1, n2, N1 and N2 are all positive integers, the N1 time units are time units configured to send the first uplink signal once in each of the N1 time units on the first carrier, and the N2 time units are time units configured to send the second uplink signal once in each of the N2 time units on the second carrier;

The terminal device is further used to send the second uplink signal at the second transmit power within the second time unit; the second network device is used to receive the second uplink signal in the second time unit, wherein the first time unit carries the first uplink signal, the transmit power of the first uplink signal is a third transmit power, and the third transmit power is less than the first transmit power; or, the first time unit does not carry the first uplink signal; or,

The terminal device is further used to send the second uplink signal with a fourth transmission power within the second time unit, and the second network device is used to receive the second uplink signal in the second time unit, wherein the fourth transmission power is less than the second transmission power, and the first time unit does not carry the first uplink signal.

20. The communication system according to claim 19, characterized in that

The first network device is further used to send first indication information to the terminal device;

The terminal device is further used to receive first indication information from the first network device, wherein the first indication information is used to indicate the N1 time units.

21. The communication system according to claim 19 or 20, characterized in that:

The second network device is further used to send second indication information to the terminal device;

The terminal device is further used to receive second indication information from the second network device, wherein the second indication information is used to indicate the N2 time units.