CN109392048B - Signal sending method, receiving method and device - Google Patents

Abstract

Embodiments of the present application provide a method for sending a signal, a method for receiving the signal, and a device. The method for sending the signal includes: the terminal device sends a first signal to the network device on the first uplink carrier; when the first parameter determined by the terminal device satisfies a preset condition, the terminal device sends the network device on the second uplink carrier to the network device. The device sends the second signal, and stops sending the first signal to the network device on the first uplink carrier, the frequency of the first uplink carrier is different from the frequency of the second uplink carrier, and both the first signal and the second signal include random preamble sequences. During the random access process, the terminal device can attempt to switch the uplink carrier to send the random access sequence by itself, which improves the success rate of random access. The methods provided in the embodiments of the present application can be applied to communication systems, such as V2X, LTE‑V, V2V, Internet of Vehicles, MTC, IoT, LTE‑M, M2M, Internet of Things, and the like.

Description

Signal transmission method, reception method and device

technical field

The embodiments of the present application relate to the field of communication technologies, and in particular, to a method for sending a signal, a method for receiving the signal, and an apparatus.

Background technique

During the development and evolution of wireless communication systems, the New Radio Interface (NR) system and Longterm Evolution (LTE) in the fifth-generation communication system (5th-Generation, 5G) can be simultaneously deployed in the frequency band below 6 GHz. )system. The NR system is most likely to be deployed on the 3.5GHz frequency first, but the uplink coverage of the system on this frequency cannot match the downlink coverage, which makes the uplink coverage of the NR system limited. LTE systems are deployed on the 1.8GHz frequency. Since the 1.8GHz frequency band has lower channel fading and better coverage, in order to enhance the uplink coverage of the NR system, the uplink of the NR system can also be deployed on the uplink frequency band of the LTE system, that is, the NR system and the LTE system share 1.8GHz. Upstream Band. Moreover, the uplink of the NR system may also be deployed on a dedicated uplink frequency band, where the LTE system or other communication systems are not deployed in the dedicated uplink frequency band, and the uplink frequency band may be referred to as a supplementary uplink (UL) carrier.

During the communication between the terminal device and the network device, the network device configures the terminal device with multiple resources for the terminal device to perform random access, and the resource may be referred to as a physical random access channel (Physical Random Access Channel, PRACH) resource. When random access is required, the terminal device selects one resource from the configured multiple PRACH resources for sending a random preamble sequence (Preamble).

Currently, a terminal device can only send a random preamble sequence on one uplink carrier in the random access process. However, when the uplink carrier is heavily loaded or the channel condition is poor, the random access success rate of the terminal equipment will be low.

SUMMARY OF THE INVENTION

Embodiments of the present application provide a method for sending a signal, a method for receiving a signal, and a device, which improve the success rate of random access.

In a first aspect, an embodiment of the present application provides a method for sending a signal. The method includes: a terminal device sends a first signal to a network device on a first uplink carrier. In the case that the first parameter determined by the terminal device satisfies the preset condition, the terminal device sends the second signal to the network device on the second uplink carrier, and stops sending the first signal to the network device on the first uplink carrier, and the first The parameters include the first power for the terminal device to send the first signal on the first uplink carrier and/or the first number of times the terminal device has sent the first signal on the first uplink carrier.

With the signal sending method provided in the first aspect, in the random access process, when the power and/or the number of times the terminal device sends the first signal on the first uplink carrier meets certain conditions, the terminal device can switch the uplink carrier by itself Sending a random access sequence improves the success rate of random access.

Optionally, in a possible implementation of the first aspect, if the first parameter includes the first power for the terminal device to send the first signal on the first uplink carrier, the first parameter determined by the terminal device satisfies The preset conditions include: the first power is greater than the first preset value.

Optionally, in a possible implementation of the first aspect, if the first parameter includes the first number of times that the terminal device has sent the first signal on the first uplink carrier, the first parameter determined by the terminal device satisfies The preset conditions include: the first number of times is equal to the second preset value.

Optionally, in a possible implementation manner of the first aspect, before the terminal device sends the second signal to the network device on the second uplink carrier, the method further includes: the terminal device receives the second indication information sent by the network device, The second indication information indicates the first initial power of the terminal device for sending the first signal on the first uplink carrier and the second initial power for sending the second signal on the second uplink carrier. The terminal device determines the initial power for sending the second signal on the second uplink carrier according to the second indication information.

With the signal sending method provided by this possible implementation manner, the terminal device can determine the initial power for sending the second signal according to the second indication information sent by the network device.

Optionally, in a possible implementation manner of the first aspect, before the terminal device sends the second signal to the network device on the second uplink carrier, the method further includes: the terminal device determines that the second uplink carrier is used for sending the signal. The initial power of the second signal is equal to the power at which the terminal device recently sent the first signal on the first uplink carrier.

With the signal sending method provided by this possible implementation manner, the terminal device sets the power for sending the first signal for the last time as the initial power for sending the second signal.

Optionally, in a possible implementation manner of the first aspect, before the terminal device sends the second signal to the network device on the second uplink carrier, the method further includes: the terminal device determines a first sending count value, wherein the first A send count value is 1 or the value of the first number of times is incremented by 1. The terminal device determines the initial power for transmitting the second signal on the second uplink carrier according to the first transmission count value.

With the signal sending method provided by this possible implementation manner, the terminal device can determine the initial power for sending the second signal according to the first sending count value.

Optionally, in a possible implementation manner of the first aspect, before the terminal device sends the first signal to the network device on the first uplink carrier, the method further includes: the terminal device receives the first indication information sent by the network device, The first indication information indicates the first maximum number of times of sending the first signal by the terminal device on the first uplink carrier and the second maximum number of times of sending the second signal on the second uplink carrier.

With the signal sending method provided in this possible implementation manner, the terminal device can determine whether the first parameter satisfies the preset condition according to the first maximum number of times of sending included in the first indication information, so as to switch the uplink carrier for transmission when the preset condition is met The random access sequence improves the success rate of random access.

Optionally, in a possible implementation of the first aspect, before the terminal device sends the second signal to the network device on the second uplink carrier, it may further include: the terminal device determines to send the second signal on the second uplink carrier. The number of initial transmissions of the signal.

Optionally, in a possible implementation manner of the first aspect, before the terminal device sends the first signal to the network device on the first uplink carrier, the method may further include: the terminal device determines the first uplink carrier.

Optionally, in a possible implementation manner of the first aspect, the terminal device sends the second signal to the network device on the second uplink carrier, and stops sending the first signal to the network device on the first uplink carrier, It may also include: the terminal device determines the second uplink carrier according to the association relationship between the first uplink carrier and the second uplink carrier.

With the signal transmission method provided by this possible implementation, the terminal device can determine the second uplink carrier according to the association relationship between the first uplink carrier and the second uplink carrier, which improves the rationality and success rate of carrier selection after switching.

Optionally, in a possible implementation manner of the first aspect, if the terminal device is out of uplink synchronization, it may further include: when the terminal device changes from uplink out-of-synchronization to uplink synchronization, the terminal device sends on the third uplink carrier. third signal.

With the signal sending method provided by this possible implementation manner, the terminal device transmits the third signal on the third uplink carrier, thereby improving the success rate of random access after the terminal device is resynchronized.

In a second aspect, an embodiment of the present application provides a method for receiving a signal. The method includes: a network device sends first indication information and/or second indication information to a terminal device, where the first indication information indicates that the terminal device is on the first uplink The first maximum number of times of sending the first signal on the carrier and the second maximum number of times of sending the second signal on the second uplink carrier. The second indication information indicates the number of times the terminal device sends the first signal on the first uplink carrier. an initial power and a second initial power for transmitting the second signal on the second uplink carrier. The network device receives the first signal sent by the terminal device on the first uplink carrier, or the second signal sent by the terminal device on the second uplink carrier.

Optionally, in a possible implementation manner of the second aspect, the network device may send third indication information to the terminal device. The third indication information indicates the first maximum power at which the terminal device sends the first signal on the first uplink carrier and the second maximum power at which the terminal device sends the second signal on the second uplink carrier.

Optionally, in a possible implementation manner of the second aspect, the network device may send fourth indication information to the terminal device, where the fourth indication information indicates the association relationship between the first uplink carrier and the second uplink carrier or the association The conditions that the relationship needs to meet.

In a third aspect, an embodiment of the present application provides a terminal device, including a sending module and a processing module. The sending module is configured to send the first signal to the network device on the first uplink carrier. In the case that the first parameter determined by the processing module satisfies the preset condition, the sending module is configured to send the second signal to the network device on the second uplink carrier, and stop sending the first signal to the network device on the first uplink carrier, The first parameter includes the first power used by the sending module to send the first signal on the first uplink carrier and/or the first number of times the sending module has sent the first signal on the first uplink carrier.

Optionally, in a possible implementation manner of the third aspect, if the first parameter includes the first power used by the sending module to send the first signal on the first uplink carrier, the first parameter satisfies the preset condition, Including: the first power is greater than the first preset value.

Optionally, in a possible implementation manner of the third aspect, if the first parameter includes the first number of times that the sending module has sent the first signal on the first uplink carrier, the first parameter satisfies the preset condition, Including: the first number of times is equal to the second preset value.

Optionally, in a possible implementation manner of the third aspect, a receiving module is further included. The receiving module is used to receive the second indication information sent by the network device, where the second indication information indicates the first initial power of the sending module to send the first signal on the first uplink carrier and the power of the second signal to be sent on the second uplink carrier. The second initial power. The processing module is further configured to determine, according to the second indication information, the initial power used for sending the second signal on the second uplink carrier.

Optionally, in a possible implementation manner of the third aspect, the processing module is further configured to: determine that the initial power used for sending the second signal on the second uplink carrier is equal to the last time the sending module performed on the first uplink carrier. The power of the transmitted first signal.

Optionally, in a possible implementation manner of the third aspect, the processing module is further configured to: determine a first sending count value, where the first sending count value is 1 or the value of the first number of times plus 1 . The initial power used for sending the second signal on the second uplink carrier is determined according to the first sending count value.

Optionally, in a possible implementation manner of the third aspect, a receiving module is further included. The receiving module is used for: receiving the first indication information sent by the network device, where the first indication information indicates the first maximum number of times of sending the first signal by the sending module on the first uplink carrier and sending the second signal on the second uplink carrier The second maximum number of sends.

In a fourth aspect, an embodiment of the present application provides a network device, including a sending module and a receiving module. A sending module, configured to send first indication information and/or second indication information to the terminal device, where the first indication information indicates the first maximum number of times the terminal device sends the first signal on the first uplink carrier and the second uplink The second maximum number of times of sending the second signal on the carrier, and the second indication information indicates the first initial power of the terminal device to send the first signal on the first uplink carrier and the second maximum power for sending the second signal on the second uplink carrier. initial power. The receiving module is configured to receive the first signal sent by the terminal device on the first uplink carrier, or the second signal sent by the terminal device on the second uplink carrier.

In a fifth aspect, an embodiment of the present application provides a terminal device, the terminal device includes a processor, a memory, and a transceiver, where the memory is used for storing instructions, the transceiver is used for communicating with other devices, and the processor is used for executing instructions stored in the memory, So that the terminal device executes the method of the first aspect.

In a sixth aspect, an embodiment of the present application provides a network device, the network device includes a processor, a memory, and a transceiver, where the memory is used for storing instructions, the transceiver is used for communicating with other devices, and the processor is used for executing instructions stored in the memory, So that the terminal device executes the method of the second aspect.

In combination with the first aspect and each possible implementation of the first aspect, the second aspect and each possible implementation of the second aspect, the third aspect and each possible implementation of the third aspect, the fourth aspect and the fourth In each possible implementation manner of the aspect, the fifth aspect and each possible implementation manner of the fifth aspect, the sixth aspect and each possible implementation manner of the sixth aspect, the frequency of the first uplink carrier is different from the frequency of the second uplink carrier , both the first signal and the second signal include random preamble sequences.

In a seventh aspect, an embodiment of the present application provides a program, which, when executed by a processor, is used to execute the method of the first aspect.

In an eighth aspect, an embodiment of the present application provides a program product, such as a computer-readable storage medium, including the program of the seventh aspect.

In a ninth aspect, an embodiment of the present application provides a computer-readable storage medium, where instructions are stored in the computer-readable storage medium, and when the computer-readable storage medium runs on a computer, the computer executes the method of the first aspect.

In a tenth aspect, an embodiment of the present application provides a program, which is used to execute the method of the second aspect when the program is executed by a processor.

In an eleventh aspect, an embodiment of the present application provides a program product, such as a computer-readable storage medium, including the program of the tenth aspect.

In a twelfth aspect, an embodiment of the present application provides a computer-readable storage medium, where instructions are stored in the computer-readable storage medium, when the computer-readable storage medium runs on a computer, the computer executes the method of the second aspect.

Embodiments of the present application provide a method for sending a signal, a method for receiving the signal, and a device. The terminal equipment is configured with at least two uplink carriers. In the random access process, when the terminal equipment sends an uplink signal on one uplink carrier and meets certain conditions, it can switch the uplink carrier and send the uplink signal on another uplink carrier, which improves the success rate of sending the uplink signal, and then in the random process The random access success rate is improved.

Description of drawings

FIG. 1 is a network architecture diagram to which this embodiment of the application is applicable;

FIG. 2A is a schematic structural diagram of a carrier configuration applicable to an embodiment of the present application;

FIG. 2B is another schematic structural diagram of a carrier configuration applicable to an embodiment of the present application;

3 is a flowchart of a method for sending a signal according to an embodiment of the present application;

4 is a flowchart of a method for receiving a signal according to an embodiment of the present application;

FIG. 5 is a schematic structural diagram of a terminal device provided in Embodiment 1 of the present application;

FIG. 6 is a schematic structural diagram of a network device provided in Embodiment 1 of the present application;

FIG. 7 is a schematic structural diagram of a terminal device provided in Embodiment 2 of the present application;

FIG. 8 is a schematic structural diagram of a network device according to Embodiment 2 of the present application.

Detailed ways

The methods for sending and receiving signals provided in the embodiments of the present application can be applied to 5G communication systems and other communication systems. The number of uplink carriers configured by the network device for the terminal device in the communication system is at least two, and the frequencies of the at least two uplink carriers are different. Wherein, the at least two uplink carriers may belong to the same cell, or may belong to different cells. FIG. 1 is a network architecture diagram to which this embodiment of the present application is applicable. As shown in Figure 1, the system includes network equipment and terminal equipment, and the network equipment has a certain signal coverage. Within the signal coverage, network equipment is configured with an uplink carrier and a downlink carrier. The terminal device can send data and control signaling to the network device through the time-frequency resources of the uplink carrier. The network device can send data and control signaling to the terminal device through the time-frequency resources of the downlink carrier. In FIG. 1 , carrier F1 is an uplink carrier and a downlink carrier, carrier F2 is an uplink carrier, and carrier F3 is an uplink carrier. The frequencies of the carrier F2 and the carrier F3 are lower than the frequencies of the carrier F1, and the carrier F2 and the carrier F3 have lower channel fading and better coverage. In the coexistence scenario of LTE and NR, the carrier F1 may be an NR frequency band carrier, and the frequency band may be 3.5 GHz. The carrier F2 may be an LTE frequency band carrier, and the frequency band may be 1.8 GHz. The carrier F3 may be an additional uplink (supplementary uplink, SUL) carrier, and the SUL carrier does not deploy LTE or other communication systems.

The carrier configuration applicable to the embodiment of the present application is described below by using a specific example.

FIG. 2A is a schematic structural diagram of a carrier configuration applicable to an embodiment of the present application. As shown in Figure 2A, it is an uplink sharing scenario of LTE and NR. The network equipment configures two uplink carriers for the terminal equipment, including the NR carrier and the LTE uplink carrier. The NR may work in a time division duplexing (Time Division Duplexing, TDD) mode, the NR carrier may be a TDD carrier, and its frequency F3 may be 3.5 GHz. LTE can work in a frequency division duplexing (Frequency Division Duplexing, FDD) mode, the LTE uplink carrier can be an FDD carrier, and its frequency F1 can be 1.75 GHz. The uplink carrier shared by NR and LTE is the LTE uplink carrier. The terminal equipment can perform uplink communication and downlink communication with the NR network equipment through the NR carrier, and can perform uplink communication with the NR network equipment through the LTE uplink carrier. In FIG. 2A, D represents a downlink time slot, U represents an uplink time slot, and numerals 0 to 9 represent subframe numbers.

FIG. 2B is another schematic structural diagram of a carrier configuration applicable to an embodiment of the present application. As shown in FIG. 2B , it is a scenario of an NR carrier and at least one SUL carrier. The network equipment configures three uplink carriers for the terminal equipment, including the NR carrier, the SUL1 carrier, and the SUL2 carrier. The NR can work in the TDD mode, the NR carrier can be a TDD carrier, and its frequency F3 can be 3.5GHz. The terminal equipment can perform uplink communication and downlink communication with the NR network equipment through the NR carrier, and can perform uplink communication with the NR network equipment through the SUL1 carrier or the SUL2 carrier. In FIG. 2B, D represents a downlink time slot, U represents an uplink time slot, and numerals 0 to 9 represent subframe numbers.

The methods for sending and receiving signals provided by the embodiments of the present application aim to solve the problem that in the current random access process in the prior art, a terminal device can only send a random preamble sequence on one uplink carrier, resulting in a low random access success rate. technical issues.

The terminal device involved in the embodiment of the present application may be a wireless terminal such as a mobile phone and a tablet computer. The wireless terminal includes a device that provides voice and/or data services to a user, and the terminal device may also be a handheld device or a vehicle-mounted device with a wireless connection function. , a wearable device, a computing device, and various forms of user equipment UE, a mobile station (Mobile Station, MS), and a terminal (terminal), which are not limited in the embodiments of the present application.

The network device involved in the embodiments of the present application may be any device capable of managing wireless network resources in a 5G communication system and other communication systems. For example, the network device may be a 5G base station (g Node B, gNB) in a 5G communication system, a wireless transceiver (NeXt Node, NX), and a transmit and receive point (TRP) in the 5G communication system. This application implements Examples are not limited.

The technical solutions of the present application and how the technical solutions of the present application solve the above-mentioned technical problems will be described in detail below with specific examples. The following specific embodiments may be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments.

FIG. 3 is a flowchart of a method for sending a signal according to an embodiment of the present application. In the method for sending a signal provided by this embodiment, the execution subject may be a terminal device. As shown in FIG. 3 , the method for sending a signal provided by this embodiment may include:

S101. A terminal device sends a first signal to a network device on a first uplink carrier.

Wherein, the first signal may include a random preamble sequence.

Specifically, the network device configures at least two uplink carriers for the terminal device. The first uplink carrier represents the uplink carrier before the terminal device switches itself, and may be any one of the at least two uplink carriers configured by the network device for the terminal device. The first signal refers to an uplink signal sent by the terminal device on the first uplink carrier, and this embodiment does not limit the specific information included in the first signal.

S102. In the case that the first parameter determined by the terminal device satisfies the preset condition, the terminal device sends the second signal to the network device on the second uplink carrier, and stops sending the first signal to the network device on the first uplink carrier.

The first parameter may include the first power for the terminal device to send the first signal on the first uplink carrier and/or the first number of times the terminal device has sent the first signal on the first uplink carrier, the first uplink carrier The frequency of the carrier is different from the frequency of the second uplink carrier, and the second signal may include a random preamble sequence.

Specifically, the second uplink carrier represents the uplink carrier after the terminal device switches itself, and may be any one of the at least two uplink carriers configured by the network device for the terminal device except the first uplink carrier. The second signal refers to an uplink signal sent by the terminal device on the second uplink carrier, and this embodiment does not limit the specific information included in the second signal.

When the first power of the terminal device sending the first signal on the first uplink carrier and/or the first number of times the terminal device has sent the first signal on the first uplink carrier meets the preset conditions, the terminal device starts from the first uplink carrier. Switching from sending the first signal on the uplink carrier to sending the second signal on the second uplink carrier, both the first signal and the second signal include a random preamble sequence.

It can be seen that in the signal sending method provided by this embodiment, in the random access process, when the power and/or the number of times the terminal device sends the first signal on the first uplink carrier meets certain conditions, the terminal device can switch the uplink by itself The carrier transmits the random access sequence. Compared with the prior art, the random access sequence can only be sent on one uplink carrier, the signal sending method provided in this embodiment improves the success rate of random access.

Optionally, as a first implementation manner of the preset condition, if the first parameter includes the first power for the terminal device to send the first signal on the first uplink carrier, the first parameter determined by the terminal device satisfies the preset condition. conditions, which can include:

The first power is greater than the first preset value, and the first preset value is a positive number.

Specifically, before sending the first signal on the first uplink carrier, the terminal device will determine the power to be used for sending the first signal. Generally speaking, the worse the uplink channel condition and the greater the interference, the greater the power value. When the first signal sent by the terminal device on the first uplink carrier last time is not received by the network device, the power for sending the first signal determined by the terminal device this time may be increased. When the first power determined by the terminal device increases to a certain extent and is greater than the first preset value, it can be considered that the network device cannot receive the first signal even if the first power continues to be increased, and uplink interference increases. Therefore, when the first power is greater than the first preset value, the terminal device can automatically switch to the second uplink carrier to send the second signal, which improves the success rate of signal transmission, and further improves the success of random access in the random access process. Rate.

Wherein, this embodiment does not limit the value of the first preset value and the manner in which the terminal obtains the first preset value. Optionally, the first preset value may be a value preset in the terminal device. Optionally, the first preset value may be configured by the network device for the terminal device. For example, before the terminal device sends the first signal to the network device on the first uplink carrier, the terminal device may receive third indication information sent by the network device, where the third indication information instructs the terminal device to send the first signal on the first uplink carrier and the second maximum power for transmitting the second signal on the second uplink carrier. At this time, the first preset value is the first maximum power. The first maximum power and the second maximum power may be the same or different. When the first maximum power is the same as the second maximum power, the third indication information may include only one maximum power.

Optionally, as a second implementation manner of the preset condition, if the first parameter includes the first number of times the terminal device has sent the first signal on the first uplink carrier, the first parameter determined by the terminal device satisfies the preset value. conditions, which can include:

The first number of times is equal to the second preset value, and the second preset value is a positive integer.

Specifically, the terminal device may attempt to send the first signal multiple times on the first uplink carrier. When the first signal sent by the terminal device on the first uplink carrier last time is not received by the network device, the terminal device may continue to send the first signal on the first uplink carrier. However, the end device will not send it unrestrictedly. When the number of times the terminal device sends the first signal on the first uplink carrier reaches a certain level and is already equal to the second preset value, it can be considered that the network device cannot receive the first signal even if it continues to send. Therefore, when the first number of times is equal to the second preset value, the terminal device can automatically switch to the second uplink carrier to send the second signal, which improves the success rate of signal transmission, and further improves the random access during the random access process. Success rate.

Wherein, this embodiment does not limit the value of the second preset value and the manner in which the terminal obtains the second preset value. Optionally, the second preset value may be a preset value inside the terminal device. Optionally, the second preset value may be configured by the network device for the terminal device. For example, before the terminal device sends the first signal to the network device on the first uplink carrier, the terminal device may receive first indication information sent by the network device, where the first indication information instructs the terminal device to send the first signal on the first uplink carrier The first maximum number of times of sending the second signal and the second maximum number of times of sending the second signal on the second uplink carrier. At this time, the second preset value is the first maximum number of times of sending. The first maximum number of times of sending and the second maximum number of times of sending may be the same or different. When the first maximum number of times of sending is the same as the second maximum number of times of sending, the first indication information may only include one maximum number of times of sending.

Optionally, as a third implementation manner of the preset condition, if the first parameter includes the first power for the terminal device to send the first signal on the first uplink carrier and the first signal that the terminal device has sent on the first uplink carrier. The first number of times of a signal, the first parameter determined by the terminal device satisfies the preset condition, which may include:

The first power is greater than the first preset value, and the first number of times is equal to the second preset value.

Optionally, the above-mentioned first preset value and second preset value may be arbitrarily configured by the base station. For example, the first preset value may be a value that does not exceed the maximum transmit power of the terminal. The second preset value can be any positive integer.

Optionally, the method for sending a signal provided by this embodiment, S102, before the terminal device sends the second signal to the network device on the second uplink carrier, may further include:

The terminal device determines the initial power for transmitting the second signal on the second uplink carrier.

The initial power for sending the second signal refers to the power at which the terminal device sends the second signal for the first time on the second uplink carrier.

As a first implementation manner, the initial power of the second signal may be a value preset inside the terminal device. This embodiment does not limit the value of the value.

As a second implementation manner, the terminal device determines the initial power used for sending the second signal on the second uplink carrier, which may include:

The terminal device receives the second indication information sent by the network device, where the second indication information indicates the first initial power for the terminal device to send the first signal on the first uplink carrier and the second initial power for the terminal device to send the second signal on the second uplink carrier. power.

The terminal device determines the initial power for sending the second signal on the second uplink carrier according to the second indication information.

Wherein, the second indication information may have various implementation manners.

Optionally, the second indication information includes a first initial power for the terminal device to send the first signal on the first uplink carrier and a second initial power for the terminal device to send the second signal on the second uplink carrier. At this time, the terminal device may determine, according to the second indication information, that the initial power used for sending the second signal on the second uplink carrier is the second initial power. The first initial power and the second initial power may be the same or different. When the first initial power is the same as the second initial power, the second indication information may include only one initial power.

Optionally, the second indication information may include a first related parameter for the terminal device to determine the initial power for sending the first signal on the first uplink carrier, and a first related parameter for the terminal device to determine to send the second signal on the second uplink carrier. The second relevant parameter of the initial power. This embodiment does not limit the implementation manner of the relevant parameters, and can be any parameter sent by the existing network device to the terminal device for the terminal device to determine the transmit power. The first correlation parameter and the second correlation parameter may be the same or different. When the first related parameter is the same as the second related parameter, the second indication information may include only one set of related parameters.

The relevant parameters included in the second indication information are described below with examples.

Relevant parameters may include sequence initial received target power (identified as preambleInitialReceivedTargetPower). The terminal device calculates the sequence received target power (identified as PREAMBLE_RECEIVED_TARGET_POWER) by using formula (1) according to preambleInitialReceivedTargetPower. Then, formula (2) is used to calculate the initial power for sending the first signal on the first uplink carrier or the initial power for sending the second signal on the second uplink carrier according to the path loss value.

PREAMBLE_RECEIVED_TARGET_POWER=preambleInitialReceivedTargetPower+DELTA_PREAMBLE Formula (1)

Among them, DELTA_PREAMBLE is a parameter predetermined by the terminal device. It can be preset or notified by the network device to the terminal device.

Transmit_Power=PREAMBLE_RECEIVED_TARGET_POWER+PL Formula (2)

Wherein, Transmit_Power represents the initial power at which the terminal device sends the first signal or the second signal. PL represents the path loss value between the terminal equipment and the network equipment, and the path loss value may be obtained by the terminal equipment through measurement, or may be pre-configured by the network equipment.

As a third implementation manner, the terminal device determines the initial power used for sending the second signal on the second uplink carrier, which may include:

The terminal device determines that the initial power used for sending the second signal on the second uplink carrier is equal to the power of the terminal device for sending the first signal on the first uplink carrier most recently.

As a fourth implementation manner, the terminal device determines the initial power used for sending the second signal on the second uplink carrier, which may include:

The terminal device determines a first sending count value, where the first sending count value is 1 or the value of the first number of times plus 1.

The terminal device determines the initial power for transmitting the second signal on the second uplink carrier according to the first transmission count value.

The following is a detailed explanation with examples.

It is assumed that the relevant parameters include the sequence initial received target power (preambleInitialReceivedTargetPower). The terminal device calculates the sequence received target power (identified as PREAMBLE_RECEIVED_TARGET_POWER) by using formula (3) according to preambleInitialReceivedTargetPower. Then, according to the path loss value, the above formula (2) is used to calculate the initial power for sending the first signal on the first uplink carrier or the initial power for sending the second signal on the second uplink carrier.

PREAMBLE_RECEIVED_TARGET_POWER=preambleInitialReceivedTargetPower+DELTA_PREAMBLE+(PREAMBLE_TRANSMISSION_COUNTER–1)*powerRampingStep(3)

Among them, PREAMBLE_TRANSMISSION_COUNTER represents the sending count value. powerRampingStep represents the power ramping step value, which is a predetermined parameter of the terminal device. It can be preset or notified by the network device to the terminal device.

It should be noted that, other parameters in the existing method for calculating the transmit power of a terminal device may also be understood as a transmit count value, which is not particularly limited in this embodiment.

Optionally, the method for sending a signal provided by this embodiment, S102, before the terminal device sends the second signal to the network device on the second uplink carrier, may further include:

The terminal device determines the initial number of times of sending the second signal on the second uplink carrier.

The initial number of times of sending the second signal refers to the initial value of the number of times the terminal device has sent the second signal on the second uplink carrier. The initial number of times the terminal device sends the second signal on the second uplink carrier affects the number of times the terminal device can also send the second signal on the second uplink carrier. The initial sending times can be 0 or greater than 0.

As a first implementation manner, the initial number of times of sending the second signal on the second uplink carrier determined by the terminal device is 0.

As a second implementation manner, the terminal device determines the initial number of times of sending the second signal on the second uplink carrier, which may include:

If the first number of times the terminal device has sent the first signal on the first uplink carrier is less than the second maximum number of times the terminal device has sent the second signal on the second uplink carrier, the terminal device determines to send the second signal on the second uplink carrier. The initial number of times of sending the second signal is the first number of times.

Optionally, the method for sending a signal provided by this embodiment, S101, before the terminal device sends the first signal to the network device on the first uplink carrier, may further include:

The terminal device determines the first uplink carrier.

Specifically, the network device is configured with at least two uplink carriers for the terminal device. Therefore, the terminal device needs to determine the first uplink carrier among the at least two uplink carriers.

Optionally, the terminal device may determine the first uplink carrier according to priorities of at least two uplink carriers, and the priority may be configured by the terminal device or by the network device. Taking FIG. 2 as an example, assuming that the priority of the NR carrier is higher than that of the LTE uplink carrier, the NR carrier may be determined as the first uplink carrier.

Optionally, the terminal device may determine the first uplink carrier according to the measurement result on the downlink carrier. Taking FIG. 2 as an example, the NR carrier is an uplink carrier and a downlink carrier, so the terminal equipment can perform downlink measurement on the NR carrier. Assuming that the measurement result of the NR carrier is greater than the preset threshold, the terminal device may determine that the NR carrier is the first uplink carrier. Assuming that the measurement result of the NR carrier is less than the preset threshold, the terminal device may determine that the LTE uplink carrier is the first uplink carrier. This embodiment does not limit the value of the preset threshold.

Optionally, in the method for sending a signal provided in this embodiment, S102, the terminal device sends the second signal to the network device on the second uplink carrier, and also stops sending the first signal to the network device on the first uplink carrier before sending the first signal to the network device. Can include:

The terminal device determines the second uplink carrier according to the association relationship between the first uplink carrier and the second uplink carrier.

Wherein, this embodiment does not limit the association relationship between the first uplink carrier and the second uplink carrier and the manner in which the terminal device acquires the association relationship.

Optionally, the association relationship or conditions that need to be satisfied by the association relationship may be preset in the terminal device. For example, a condition that the association relationship needs to meet may be: a first carrier with a high frequency is associated with a second carrier with a frequency lower than the first carrier. For example, the network device configures three uplink carriers for the terminal device, and the frequencies are F1, F2, and F3, respectively, and F1>F2>F3. Then, the association relationship determined by the terminal device may be: F1 is associated with F2 and F3, and F2 is associated with F3. Assuming that the first uplink carrier is F1, the second uplink carrier determined by the terminal device according to the association relationship may be F2 or F3. Assuming that the first uplink carrier is F2, the second uplink carrier determined by the terminal device according to the association relationship may be F3. Optionally, if there are multiple second carriers, each second carrier may also be configured with a priority, for example, the priority is decreased in order of carrier frequency from high to low. Taking the above example as an example, F1 is associated with F2 and F3. Since F2>F3, the priority of F2 is higher than that of F3. Assuming that the first uplink carrier is F1, the second uplink carrier determined by the terminal device according to the association relationship may be F2.

Optionally, the association relationship between the first uplink carrier and the second uplink carrier may also be pre-configured by the network device to the terminal device. For example, before the terminal device sends the second signal to the network device on the second uplink carrier, the terminal device may receive fourth indication information sent by the network device, where the fourth indication information indicates the association between the first uplink carrier and the second uplink carrier Or the conditions that the association needs to meet. For example, the network device configures three uplink carriers for the terminal device, and the frequencies are F1, F2, and F3, respectively, and F1>F2>F3. The fourth indication information may include an association between F1 and F3, and an association between F2 and F3. Assuming that the first uplink carrier is F1, the second uplink carrier determined by the terminal device according to the association relationship may be F3. For another example, the fourth indication information may include a condition that the association relationship needs to satisfy. The principle is similar to the above description, and will not be repeated here.

Optionally, the method for sending a signal provided by this embodiment may further include:

When the terminal device changes from uplink out-of-sync to uplink synchronization, the terminal device sends a third signal on the third uplink carrier.

The third signal refers to an uplink signal sent by the terminal device on the third uplink carrier, and the third signal may include a random preamble sequence. This embodiment does not limit other information included in the third signal.

Optionally, as a first implementation manner of the third uplink carrier, the third uplink carrier may be an uplink carrier for the terminal device to send the uplink signal before the uplink loses synchronization.

Optionally, as a second implementation manner of the third uplink carrier, if the uplink carrier that the terminal device sends the uplink signal before the uplink loses synchronization is the first uplink carrier, the third uplink carrier may be the second uplink carrier.

In this implementation manner, since the terminal is out of synchronization in the uplink, switching the carrier to send the uplink signal can improve the success rate of sending the signal, thereby improving the success rate of random access in the random access process.

Optionally, as a third implementation manner of the third uplink carrier, if the network device configures two uplink carriers for the terminal device, and the uplink carrier that the terminal device sends the uplink signal before the uplink loses synchronization is the second uplink carrier, then the The three uplink carriers may be the first uplink carrier.

In this implementation, although the terminal device has switched the uplink carrier and switched from the first uplink carrier to the second uplink carrier, because the terminal loses uplink synchronization, switching the uplink carrier again to send the uplink signal can improve the success of sending the signal rate, thereby improving the random access success rate in the random access process.

Optionally, as a fourth implementation manner of the third uplink carrier, if the network device configures at least three uplink carriers for the terminal device, and the uplink carrier that the terminal device sends the uplink signal before the uplink loses synchronization is the second uplink carrier, then The third uplink carrier may be any uplink carrier except the first uplink carrier and the second uplink carrier among the at least three uplink carriers.

In this implementation, since the terminal is out of synchronization in the uplink, by switching to the uplink carrier that has not been switched before to send the uplink signal, the success rate of sending the signal can be improved, and then the random access success rate in the random access process can be improved.

This embodiment provides a method for sending a signal, including: a terminal device sends a first signal to a network device on a first uplink carrier, and when the first parameter determined by the terminal device satisfies a preset condition, the terminal device sends a first signal to the network device on the first uplink carrier. Send the second signal to the network device on the second uplink carrier, and stop sending the first signal to the network device on the first uplink carrier. In the signal sending method provided in this embodiment, when the terminal device is configured with at least two uplink carriers, when the terminal device transmits an uplink signal on one uplink carrier and meets certain conditions, it can switch the uplink carrier and send it on another uplink carrier. The uplink signal improves the success rate of sending the uplink signal, thereby improving the success rate of random access in the random process.

FIG. 4 is a flowchart of a method for receiving a signal according to an embodiment of the present application. In the method for receiving a signal provided by this embodiment, the execution subject may be a network device. As shown in FIG. 4 , the method for receiving a signal provided in this embodiment may include:

S201. The network device sends the first indication information and/or the second indication information to the terminal device.

The first indication information indicates the first maximum number of times the terminal device sends the first signal on the first uplink carrier and the second maximum number of times for sending the second signal on the second uplink carrier, and the second indication information indicates The terminal device sends the first initial power of the first signal on the first uplink carrier and sends the second initial power of the second signal on the second uplink carrier. The frequency of the first uplink carrier is different from the frequency of the second uplink carrier, and both the first signal and the second signal include random preamble sequences.

Specifically, the network device configures at least two uplink carriers for the terminal device. The first uplink carrier represents the uplink carrier before the terminal device switches itself, and may be any one of the at least two uplink carriers configured by the network device for the terminal device. The second uplink carrier represents the uplink carrier after the terminal device switches itself, and may be any one of the at least two uplink carriers configured by the network device for the terminal device except the first uplink carrier. The frequency of the first uplink carrier is different from the frequency of the second uplink carrier.

The network device sends the first indication information and/or the second indication information to the terminal device. The first indication information actually indicates the maximum number of times that the terminal device sends uplink signals on all uplink carriers configured for it by the network device. The second indication information actually indicates the initial power of the terminal device to send the uplink signal on all the uplink carriers configured for it by the network device. The first indication information provides a basis for the terminal device to determine the second uplink carrier. The second indication information provides a basis for the terminal device to determine the initial power for sending the second signal on the second uplink carrier.

For the description of the first indication information and the second indication information, refer to the embodiment shown in FIG. 3 above, and the principles are similar, and details are not repeated here.

S202. The network device receives the first signal sent by the terminal device on the first uplink carrier, or the second signal sent by the terminal device on the second uplink carrier.

Specifically, for a specific terminal device, the uplink signal is usually only sent on one uplink carrier. If the terminal device does not switch the uplink carrier, the terminal device sends the first signal on the first uplink carrier. Correspondingly, the network device receives the first signal sent by the terminal device on the first uplink carrier. If the terminal device switches the uplink carrier, the terminal device sends the second signal on the second uplink carrier. Correspondingly, the network device receives the second signal sent by the terminal device on the second uplink carrier.

It should be noted that the network device has a certain signal coverage, and there may be more than one terminal device that communicates with the network device within the signal coverage. Therefore, in the case where multiple terminal devices communicate with the network device, the network device can receive uplink signals sent by each terminal device on the first uplink carrier and on the second uplink carrier.

Optionally, the network device may send third indication information to the terminal device.

Wherein, the third indication information indicates the first maximum power at which the terminal device sends the first signal on the first uplink carrier and the second maximum power at which the terminal device sends the second signal on the second uplink carrier.

For the description of the third indication information, refer to the above-mentioned embodiment shown in FIG. 3 , and the principle is similar, and details are not repeated here.

Optionally, the network device may send fourth indication information to the terminal device, where the fourth indication information indicates an association relationship between the first uplink carrier and the second uplink carrier or a condition that the association relationship needs to meet.

For the description of the fourth indication information, refer to the above-mentioned embodiment shown in FIG. 3 , the principle is similar, and details are not repeated here.

In the signal receiving method provided in this embodiment, in the random access process, the terminal device can switch the uplink carrier to send the uplink signal, and the network device can receive the uplink signal sent by the terminal device on the first uplink carrier or on the second uplink carrier . Compared with the prior art, the terminal device can only send the uplink signal on one uplink carrier, the signal receiving method provided in this embodiment improves the success rate of random access.

FIG. 5 is a schematic structural diagram of a terminal device according to Embodiment 1 of the present application. The terminal device provided by the embodiment of the present application is configured to execute the signal sending method provided by the embodiment shown in FIG. 3 . As shown in FIG. 5 , the terminal device provided in this embodiment of the present application may include:

The sending module 11 is configured to send the first signal to the network device on the first uplink carrier.

When the first parameter determined by the processing module 12 satisfies the preset condition, the sending module 11 is configured to send the second signal to the network device on the second uplink carrier, and stop sending the first signal to the network device on the first uplink carrier signal, wherein the first parameter includes the first power used by the sending module 11 to send the first signal on the first uplink carrier and/or the first number of times the sending module 11 has sent the first signal on the first uplink carrier, The frequency of the first uplink carrier is different from the frequency of the second uplink carrier, and both the first signal and the second signal include random preamble sequences.

Optionally, if the first parameter includes the first power used by the sending module 11 to send the first signal on the first uplink carrier, the first parameter satisfies the preset conditions, including:

The first power is greater than the first preset value.

Optionally, if the first parameter includes the first number of times that the sending module 11 has sent the first signal on the first uplink carrier, the first parameter satisfies the preset conditions, including:

The first number of times is equal to the second preset value.

Optionally, a receiving module 13 is also included.

The receiving module 13 is configured to receive the second indication information sent by the network device, where the second indication information indicates that the sending module 11 sends the first initial power of the first signal on the first uplink carrier and sends the second signal on the second uplink carrier. The second initial power of the signal.

The processing module 12 is further configured to determine, according to the second indication information, the initial power used for sending the second signal on the second uplink carrier.

Optionally, the processing module 12 is also used for:

It is determined that the initial power used for sending the second signal on the second uplink carrier is equal to the power of the sending module 11 for sending the first signal on the first uplink carrier most recently.

Optionally, the processing module 12 is also used for:

A first sending count value is determined, where the first sending count value is 1 or the value of the first number of times plus 1.

The initial power used for sending the second signal on the second uplink carrier is determined according to the first sending count value.

Optionally, a receiving module 13 is also included. The receiving module 13 is used for:

Receive the first indication information sent by the network device, where the first indication information indicates the first maximum number of times the sending module 11 sends the first signal on the first uplink carrier and the second maximum number of times for sending the second signal on the second uplink carrier. The number of transmissions.

The terminal device provided in the embodiment of the present application is configured to execute the signal sending method provided by the method embodiment shown in FIG. 3 , and its technical principle and technical effect are similar, and details are not repeated here.

FIG. 6 is a schematic structural diagram of a network device according to Embodiment 1 of the present application. The network device provided by the embodiment of the present application is configured to execute the signal receiving method provided by the embodiment shown in FIG. 4 . As shown in FIG. 6 , the network device provided in this embodiment of the present application may include:

The sending module 21 is configured to send first indication information and/or second indication information to the terminal device, where the first indication information indicates the first maximum number of times of sending the first signal by the terminal device on the first uplink carrier and the number of times of sending the first signal on the second uplink carrier. The second maximum number of times of sending the second signal on the uplink carrier, and the second indication information indicates the first initial power of the terminal device to send the first signal on the first uplink carrier and the number of times for sending the second signal on the second uplink carrier. 2. Initial power. The frequency of the first uplink carrier is different from the frequency of the second uplink carrier, and both the first signal and the second signal include random preamble sequences.

The receiving module 22 is configured to receive the first signal sent by the terminal device on the first uplink carrier, or the second signal sent by the terminal device on the second uplink carrier.

The network device provided in this embodiment of the present application is configured to execute the signal receiving method provided by the method embodiment shown in FIG. 4 , and its technical principle and technical effect are similar, and details are not repeated here.

FIG. 7 is a schematic structural diagram of a terminal device provided in Embodiment 2 of the present application. As shown in FIG. 7 , the terminal device includes a processor 31, a memory 32, and a transceiver 33. The memory 32 is used to store instructions, and the transceiver 33 is used to communicate with other devices, and the processor 31 is used to execute the instructions stored in the memory 32, so that the terminal device executes the signal sending method provided by the embodiment shown in FIG. 3, and the specific implementation and technology The effect is similar and will not be repeated here.

FIG. 8 is a schematic structural diagram of a network device provided in Embodiment 2 of the present application. As shown in FIG. 8 , the network device includes a processor 41, a memory 42, and a transceiver 43. The memory 42 is used to store instructions, and the transceiver 43 is used to communicate with other devices, and the processor 41 is used to execute the instructions stored in the memory 42, so that the network device executes the signal receiving method provided by the embodiment shown in FIG. 4, the specific implementation and technology The effect is similar and will not be repeated here.

It can be understood that the processor used by the network device or terminal device in this application may be a central processing unit (CPU), a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) ) or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. It may implement or execute the various exemplary logical blocks, modules and circuits described in connection with this disclosure. The processor may also be a combination that implements computing functions, such as a combination of one or more microprocessors, a combination of a DSP and a microprocessor, and the like.

Those of ordinary skill in the art can understand that all or part of the steps of implementing the above method embodiments may be completed by program instructions related to hardware. The aforementioned program can be stored in a computer-readable storage medium. When the program is executed, the steps including the above method embodiments are executed; and the foregoing storage medium includes: ROM, RAM, magnetic disk or optical disk and other media that can store program codes.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the embodiments of the present application, but not to limit them; It should be understood that: it is still possible to modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements to some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the embodiments of the present application Scope of technical solutions.

Claims (15)

1. a method for sending a signal, comprising: The terminal device sends the first signal to the network device on the first uplink carrier; In the case that the first parameter determined by the terminal device satisfies the preset condition, the terminal device sends a second signal to the network device on the second uplink carrier, and stops sending the second signal to the network device on the first uplink carrier. The network device sends the first signal, wherein the first parameter includes the first power used by the terminal device to send the first signal on the first uplink carrier and/or the The first number of times the first signal has been sent on the first uplink carrier, the frequency of the first uplink carrier is different from the frequency of the second uplink carrier, the first signal and the second signal Both include random preamble sequences; When the terminal equipment changes from uplink out-of-synchronization to uplink synchronization, the terminal equipment sends an uplink signal on the third uplink carrier, and the uplink signal includes a random preamble sequence; If the uplink carrier that the terminal device sends the uplink signal before the uplink loses synchronization is the first uplink carrier, the third uplink carrier is the second uplink carrier; If the network device configures two uplink carriers for the terminal device, and the uplink carrier on which the terminal device sends the uplink signal before the uplink loses synchronization is the second uplink carrier, the third uplink carrier is the first uplink carrier ; If the network device configures at least three uplink carriers for the terminal device, and the uplink carrier on which the terminal device sends the uplink signal before the uplink loses synchronization is the second uplink carrier, the third uplink carrier is the at least three uplink carrier. Any uplink carrier except the first uplink carrier and the second uplink carrier among the three uplink carriers. 2. The method according to claim 1, wherein, if the first parameter includes a first power for the terminal device to send the first signal on the first uplink carrier, the The first parameter determined by the terminal device satisfies the preset condition, including: The first power is greater than a first preset value. 3. The method according to claim 1, wherein if the first parameter includes the first number of times that the terminal device has sent the first signal on the first uplink carrier, the The first parameter determined by the terminal device satisfies the preset condition, including: The first number of times is equal to the second preset value. The method according to any one of claims 1 to 3, wherein before the terminal device sends the second signal to the network device on the second uplink carrier, the method further comprises: The terminal device receives the second indication information sent by the network device, where the second indication information indicates that the terminal device sends the first initial power of the first signal on the first uplink carrier and the the second initial power for sending the second signal on the second uplink carrier; The terminal device determines, according to the second indication information, the initial power used for sending the second signal on the second uplink carrier. 5. The method according to any one of claims 1 to 3, wherein before the terminal device sends the second signal to the network device on the second uplink carrier, the method further comprises: The terminal device determines that the initial power used for sending the second signal on the second uplink carrier is equal to the power of the terminal device for sending the first signal on the first uplink carrier most recently. 6. The method according to any one of claims 1 to 3, wherein before the terminal device sends the second signal to the network device on the second uplink carrier, the method further comprises: The terminal device determines a first sending count value, where the first sending count value is 1 or the value of the first number of times plus 1; The terminal device determines, according to the first transmission count value, an initial power for transmitting the second signal on the second uplink carrier. 7. The method according to any one of claims 1 to 3, wherein before the terminal device sends the first signal to the network device on the first uplink carrier, the method further comprises: The terminal device receives the first indication information sent by the network device, where the first indication information indicates that the terminal device sends the first maximum number of times of sending the first signal on the first uplink carrier and the The second maximum number of times of sending the second signal on the second uplink carrier. 8. A terminal device, comprising: a sending module, configured to send the first signal to the network device on the first uplink carrier; When the first parameter determined by the processing module satisfies the preset condition, the sending module is configured to send the second signal to the network device on the second uplink carrier, and stop sending the second signal to the network device on the first uplink carrier. The network device sends the first signal, wherein the first parameter includes the first power used by the sending module to send the first signal on the first uplink carrier and/or the sending module is The first number of times the first signal has been sent on the first uplink carrier, the frequency of the first uplink carrier is different from the frequency of the second uplink carrier, the first signal and the second signal Both include random preamble sequences; The sending module is further configured to send an uplink signal on the third uplink carrier when the terminal device changes from uplink out-of-synchronization to uplink synchronization, and the uplink signal includes a random preamble sequence; If the uplink carrier that the terminal device sends the uplink signal before the uplink loses synchronization is the first uplink carrier, the third uplink carrier is the second uplink carrier; If the network device configures two uplink carriers for the terminal device, and the uplink carrier on which the terminal device sends the uplink signal before the uplink loses synchronization is the second uplink carrier, the third uplink carrier is the first uplink carrier ; If the network device configures at least three uplink carriers for the terminal device, and the uplink carrier on which the terminal device sends the uplink signal before the uplink loses synchronization is the second uplink carrier, the third uplink carrier is the at least three uplink carrier. Any uplink carrier except the first uplink carrier and the second uplink carrier among the three uplink carriers. 9 . The terminal device according to claim 8 , wherein if the first parameter includes the first power for the sending module to send the first signal on the first uplink carrier, the The first parameter satisfies the preset conditions, including: The first power is greater than a first preset value. 10. The terminal device according to claim 8, wherein if the first parameter includes the first number of times that the sending module has sent the first signal on the first uplink carrier, the The first parameter satisfies the preset conditions, including: The first number of times is equal to the second preset value. 11. The terminal device according to any one of claims 8 to 10, further comprising a receiving module; The receiving module is configured to receive second indication information sent by the network device, where the second indication information indicates the first initial power of the sending module for sending the first signal on the first uplink carrier and a second initial power for transmitting the second signal on the second uplink carrier; The processing module is further configured to determine, according to the second indication information, an initial power for sending the second signal on the second uplink carrier. 12. The terminal device according to any one of claims 8 to 10, wherein the processing module is further configured to: It is determined that the initial power used for sending the second signal on the second uplink carrier is equal to the power of the sending module for sending the first signal on the first uplink carrier most recently. 13. The terminal device according to any one of claims 8 to 10, wherein the processing module is further configured to: determining a first sending count value, wherein the first sending count value is 1 or the value of the first number of times plus 1; The initial power used for transmitting the second signal on the second uplink carrier is determined according to the first transmission count value. 14. The terminal device according to any one of claims 8 to 10, further comprising a receiving module; the receiving module is configured to: Receive first indication information sent by the network device, where the first indication information indicates that the sending module sends the first maximum number of times of sending the first signal on the first uplink carrier and the number of times of sending the first signal on the second The second maximum number of times of sending the second signal on the uplink carrier. 15. A computer readable storage medium storing instructions which, when run on a computer, cause the computer to perform the method of any of claims 1-7.

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