WO2019029696A1 - Signal transmission method and receiving method and apparatus - Google Patents

Abstract

Provided in the embodiments of the present application are a signal transmission method and receiving method and apparatus. The signal transmission method comprises: a terminal device transmits a first signal to a network device over a first uplink carrier; when a terminal device determines that a first parameter meets a preset condition, the terminal device sends a second signal to the network device over a second uplink carrier, and stops sending the first signal to the network device over the first uplink carrier, the first parameter comprising a first power used by the terminal device for sending the first signal over the first uplink carrier and/or a first number of times that the terminal device has already sent the first signal over the first uplink carrier, the frequency of the first uplink carrier and the frequency of the second uplink carrier being different, and the first signal and the second signal both comprising a random preamble sequence. During a random access process, the terminal device can automatically try to switch the uplink carrier for sending the random access sequence, increasing the success rate of random access.

Description

Signal transmitting method, receiving method and device

This application claims the priority of the Chinese Patent Application, filed on Aug. 11, 2017, with the application number of 201710687413.5, and the application name is "Signal Transmission Method, Receiving Method and Apparatus", the entire contents of which are incorporated herein by reference. In the application.

Technical field

The embodiments of the present invention relate to the field of communications technologies, and in particular, to a signal sending method, a receiving method, and a device.

Background technique

In the evolution of wireless communication systems, the New Radio Interface (NR) system and Long Term Evolution (5th-Generation, 5G) can be deployed simultaneously in the frequency band below 6 GHz. LTE) system. The NR system is most likely to be deployed on the 3.5 GHz frequency, but the uplink coverage of the system on this frequency cannot match the downlink coverage, which limits the uplink coverage of the NR system. The LTE system is deployed at 1.8 GHz. Since the 1.8 GHz 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 in the uplink frequency band of the LTE system, that is, the NR system and the LTE system share 1.8 GHz. Upstream frequency band. Moreover, the uplink of the NR system can also be deployed on a dedicated uplink frequency band. The dedicated uplink frequency band does not deploy an LTE system or other communication system, and the uplink frequency band can be referred to as an increased uplink (UL) carrier.

The network device configures a plurality of resources for the terminal device to perform random access, and the resource may be referred to as a physical random access channel (PRACH) resource. . When the terminal device requires random access, one of the configured multiple PRACH resources is selected to send a random preamble sequence (Preamble).

Currently, a terminal device can only transmit a random preamble sequence on one uplink carrier during a random access procedure. However, when the uplink carrier is heavily loaded or the channel conditions are poor, the random access success rate of the terminal device is low.

Summary of the invention

The embodiment of the present application provides a signal sending method, a receiving method, and a device, which improve the success rate of random access.

In a first aspect, the embodiment of the present application provides a method for transmitting a signal, where the method includes: the terminal device sends a first signal to the network device on the first uplink carrier. If the first parameter determined by the terminal device meets the preset condition, the terminal device sends a 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, where The parameter includes a first power for the terminal device to transmit the first signal on the first uplink carrier and/or a first number of times the terminal device has transmitted the first signal on the first uplink carrier.

According to the method for transmitting a signal provided by the first aspect, in the random access process, when the power of the first signal transmitted by the terminal device on the first uplink carrier and/or the number of times of transmission has met a certain condition, the terminal device may switch the uplink carrier by itself. Sending a random access sequence improves the success rate of random access.

Optionally, in a possible implementation manner of the first aspect, if the first parameter includes a first power that is used by the terminal device to send the first signal on the first uplink carrier, the first parameter determined by the terminal device is met. The preset condition includes: the first power is greater than the first preset value.

Optionally, in a possible implementation manner of the first aspect, if the first parameter includes the first time that the terminal device has sent the first signal on the first uplink carrier, the first parameter determined by the terminal device is met. The preset condition includes: the first number 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: receiving, by the terminal device, the second indication information sent by the network device, The second indication information indicates that the terminal device transmits the first initial power of the first signal on the first uplink carrier and the second initial power of the second signal on the second uplink carrier. The terminal device determines, according to the second indication information, an initial power for transmitting the second signal on the second uplink carrier.

With the method for transmitting a signal provided by the possible implementation, the terminal device may determine, according to the second indication information sent by the network device, the initial power for transmitting 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: determining, by the terminal device, the sending on the second uplink carrier The initial power of the second signal is equal to the power of the last signal transmitted by the terminal device on the first uplink carrier.

With the method of transmitting the signal provided by the possible implementation, the terminal device sets the power of the last transmission of the first signal to the initial power for transmitting 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: determining, by the terminal device, the first sending count value, where A transmit count value of 1 or a value of the first number plus one. The terminal device determines an initial power for transmitting the second signal on the second uplink carrier according to the first transmission count value.

With the method for transmitting a signal provided by the possible implementation, the terminal device may determine the initial power for transmitting the second signal according to the first transmission 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: receiving, by the terminal device, the first indication information sent by the network device, The first indication information indicates a first maximum number of transmissions of the first signal by the terminal device on the first uplink carrier and a second maximum number of transmissions of the second signal on the second uplink carrier.

The method for transmitting a signal provided by the possible implementation manner, the terminal device may determine, according to the first maximum number of transmissions included in the first indication information, whether the first parameter meets a preset condition, so as to switch the uplink carrier transmission when the preset condition is met. The random access sequence improves the random access success rate.

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 may further include: determining, by the terminal device, sending the second uplink carrier The initial number of times the signal was sent.

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: determining, by the terminal device, 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 before sending the first signal to the network device on the first uplink carrier, The method may further include: determining, by the terminal device, the second uplink carrier according to the association relationship between the first uplink carrier and the second uplink carrier.

The method for transmitting the signal provided by the possible implementation manner, the terminal device may determine the second uplink carrier according to the association relationship between the first uplink carrier and the second uplink carrier, and improve the rationality and success rate of the carrier selection after the handover.

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

Through the method for transmitting the signal provided by the possible implementation manner, the terminal device improves the success rate of the random access after the terminal device resynchronizes by transmitting the third signal on the third uplink carrier.

In a second aspect, the embodiment of the present application provides a method for receiving a signal, where the method includes: the network device sends first indication information and/or second indication information to the terminal device, where the first indication information indicates that the terminal device is in the first uplink. Transmitting a first maximum number of transmissions of the first signal on the carrier and transmitting a second maximum number of transmissions of the second signal on the second uplink carrier, the second indication information indicating that the terminal device sends the first signal on the first uplink carrier An initial power and a second initial power of the second signal transmitted 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 the third indication information to the terminal device. The third indication information indicates that the terminal device transmits the first maximum power of the first signal on the first uplink carrier and the second maximum power of the second signal on the second uplink carrier.

Optionally, in a possible implementation manner of the second aspect, the network device may send the fourth indication information to the terminal device, where the fourth indication information indicates an association relationship or the association between the first uplink carrier and the second uplink carrier. 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. And a sending module, configured to send the first signal to the network device on the first uplink carrier. The sending module is configured to send a 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, where the first parameter determined by the processing module meets the preset condition, The first parameter includes a first power used by the sending module to send the first signal on the first uplink carrier and/or a first time that 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 a first power used by the sending module to send the first signal on the first uplink carrier, the first parameter meets the preset condition, The method includes: 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 time that the sending module sends the first signal on the first uplink carrier, the first parameter meets the preset condition, Including: the first number is equal to the second preset value.

Optionally, in a possible implementation manner of the third aspect, the receiving module is further included. The receiving module is configured to receive the second indication information sent by the network device, where the second indication information indicates that the sending module sends the first initial power of the first signal on the first uplink carrier and the second signal on the second uplink carrier. Second initial power. The processing module is further configured to determine, according to the second indication information, an initial power for transmitting 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 an initial power for transmitting the second signal on the second uplink carrier is equal to a last time that the sending module is on the first uplink carrier The power of the first signal is sent.

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 is plus 1 . An initial power for transmitting the second signal on the second uplink carrier is determined according to the first transmission count value.

Optionally, in a possible implementation manner of the third aspect, the receiving module is further included. 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 transmissions of the first signal on the first uplink carrier and the second signal on the second uplink carrier The second maximum number of transmissions.

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 the first indication information and/or the second indication information to the terminal device, where the first indication information indicates the first maximum number of transmissions of the first signal sent by the terminal device on the first uplink carrier, and the second uplink Sending a second maximum number of transmissions of the second signal on the carrier, the second indication information indicating that the terminal device sends the first initial power of the first signal on the first uplink carrier and the second signal that transmits the second signal on the second uplink carrier Initial power. The receiving module is configured to receive a first signal sent by the terminal device on the first uplink carrier, or a 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, where the terminal device includes a processor, a memory, and a transceiver, where the memory is used to store instructions, the transceiver is used to communicate with other devices, and the processor is configured to execute instructions stored in the memory. To cause the terminal device to perform the method of the above first aspect.

In a sixth aspect, an embodiment of the present application provides a network device, where the network device includes a processor, a memory, and a transceiver, where the memory is used to store instructions, the transceiver is used to communicate with other devices, and the processor is configured to execute instructions stored in the memory. To cause the terminal device to perform the method of the second aspect described above.

Combining the above first aspect and each possible embodiment of the first aspect, the second aspect, and the possible possible embodiments of the second aspect, the third aspect, and the possible embodiments, the fourth aspect, and the fourth aspect of the third aspect Each possible implementation manner of the aspect, the fifth aspect, and the possible implementation manners of the fifth aspect, the sixth aspect, and the possible implementation manners of the sixth aspect, the frequency of the first uplink carrier is different from the frequency of the second uplink carrier The first signal and the second signal each comprise a random preamble sequence.

In a seventh aspect, an embodiment of the present application provides a program, when executed by a processor, is configured to perform the method of the foregoing 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, the embodiment of the present application provides a computer readable storage medium, where the computer readable storage medium stores instructions, when executed on a computer, causing the computer to execute the method of the first aspect.

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

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.

According to a twelfth aspect, the embodiment of the present application provides a computer readable storage medium, where the computer readable storage medium stores instructions that, when run on a computer, cause the computer to perform the method of the second aspect.

The embodiment of the present application provides a signal sending method, a receiving method, and a device. The terminal device is configured with at least two uplink carriers. In the random access process, when the terminal device sends an uplink signal on an uplink carrier to meet certain conditions, the uplink carrier can be switched, and the uplink signal is sent on another uplink carrier, thereby improving the success rate of transmitting the uplink signal, and then in a random process. The random access success rate is improved.

DRAWINGS

1 is a network architecture diagram applicable to an embodiment of the present application;

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

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

FIG. 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 according to Embodiment 1 of the present application;

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

FIG. 7 is a schematic structural diagram of a terminal device according to 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 method for transmitting and receiving the signal provided by the embodiment of the present application can be applied to a 5G communication system and other communication systems. The number of uplink carriers configured by the network device in the communication system for the terminal device is at least two, and the frequencies of the at least two uplink carriers are different. The at least two uplink carriers may belong to the same cell or belong to different cells. FIG. 1 is a network architecture diagram applicable to an embodiment of the present application. As shown in FIG. 1, the system includes a network device and a terminal device, and the network device has a certain signal coverage. Within the signal coverage, the network device is configured with an uplink carrier and a downlink carrier. The terminal device can send data and control signaling to the network device by using the time-frequency resource of the uplink carrier. The network device can send data and control signaling to the terminal device through the time-frequency resource 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. Wherein, the frequency of the carrier F2 and the carrier F3 is lower than the frequency of the carrier F1, and the carrier F2 and the carrier F3 have lower channel fading and better coverage. In the LTE and NR coexistence scenario, the carrier F1 may be an NR-band carrier, and the frequency band may be 3.5 GHz. Carrier F2 can be an LTE band carrier, and the frequency band can be 1.8 GHz. Carrier F3 may be an increased 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 FIG. 2A, it is an LTE and NR uplink sharing scenario. The network device configures two uplink carriers for the terminal device, including the NR carrier and the LTE uplink carrier. The NR can work in a Time Division Duplexing (TDD) mode, and the NR carrier can be a TDD carrier, and the frequency F3 can be 3.5 GHz. LTE can work in 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 an LTE uplink carrier. The terminal device can perform uplink communication and downlink communication with the NR network device through the NR carrier, and can perform uplink communication with the NR network device through the LTE uplink carrier. In FIG. 2A, D represents a downlink slot, U represents an uplink slot, and numerals 0-9 represent a subframe number.

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 device configures three uplink carriers for the terminal device, including an NR carrier, a SUL 1 carrier, and a SUL 2 carrier. Wherein, the NR can work in the TDD mode, the NR carrier can be a TDD carrier, and the frequency F3 can be 3.5 GHz. The terminal device can perform uplink communication and downlink communication with the NR network device through the NR carrier, and can perform uplink communication with the NR network device through the SUL 1 carrier or the SUL 2 carrier. In FIG. 2B, D represents a downlink slot, U represents an uplink slot, and numerals 0-9 represent a subframe number.

The method for transmitting and receiving a signal provided by the embodiment of the present application is to solve the problem that the terminal device can only send a random preamble sequence on one uplink carrier in the random access process in the prior art, resulting in a low success rate of random access. Technical problem.

The terminal device in the embodiment of the present application may be a wireless terminal such as a mobile phone or a tablet computer, and the wireless terminal includes a device for providing voice and/or data services to the user, and the terminal device may also be a handheld device with an wireless connection function and an in-vehicle device. The embodiment of the present application is not limited to a device, a computing device, and a user equipment UE, a mobile station (MS), and a terminal.

The network device involved in the embodiment of the present application may be any device that manages wireless network resources in any of the 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 NeXt Node (NX) in a 5G communication system, and a Transmit and receive point (TRP). The embodiment is not limited.

The technical solutions of the present application and the technical solutions of the present application are described in detail in the following specific embodiments to solve the above technical problems. The following specific embodiments may be combined with each other, and the same or similar concepts or processes may not be described in some embodiments.

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

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

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

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

S102: If the first parameter determined by the terminal device meets 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 a first power for the terminal device to send the first signal on the first uplink carrier and/or a first time that the terminal device has sent the first signal on the first uplink carrier, the first uplink 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 indicates an uplink carrier that is self-switched by the terminal device, and may be any one of the at least two uplink carriers configured by the network device except the first uplink carrier. The second signal is an uplink signal that is sent by the terminal device on the second uplink carrier. The specific information included in the second signal is not limited in this embodiment.

When the terminal device transmits the first power of the first signal on the first uplink carrier and/or the first time that the terminal device has sent the first signal on the first uplink carrier meets a preset condition, the terminal device is at the first Transmitting the first signal on the uplink carrier to transmitting the second signal on the second uplink carrier, the first signal and the second signal each comprise a random preamble sequence.

It can be seen that, in the method for transmitting the signal provided by the embodiment, in the random access process, when the power of the first signal transmitted by the terminal device on the first uplink carrier and/or the number of times of transmission has met a certain condition, the terminal device may switch the uplink by itself. The carrier transmits a random access sequence. Compared with the prior art, the random access sequence can be sent on only one uplink carrier, and the method for transmitting the signal 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 a first power used by the terminal device to send the first signal on the first uplink carrier, the first parameter determined by the terminal device meets the preset Conditions can include:

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

Specifically, the terminal device determines the power to be used for transmitting the first signal before transmitting the first signal on the first uplink carrier. In general, the worse the uplink channel condition and the greater the interference, the larger the power value. When the first signal sent by the terminal device on the first uplink carrier and the network device are not received, the power of the first signal determined by the current terminal device 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 first signal cannot be received even if the first power network device continues to be increased, and the uplink interference is increased. Therefore, when the first power is greater than the first preset value, the terminal device can switch to the second uplink carrier to send the second signal, thereby improving the signal transmission success rate, thereby improving the random access success in the random access process. rate.

The manner in which the first preset value is obtained and the manner in which the terminal acquires the first preset value are not limited in this embodiment. Optionally, the first preset value may be a value preset in the terminal device. Optionally, the first preset value may be that the network device is configured 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 the third indication information sent by the network device, where the third indication information indicates that the terminal device sends the first signal on the first uplink carrier. The first maximum power and the second maximum power of the second signal transmitted 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 time that the terminal device sends the first signal on the first uplink carrier, the first parameter determined by the terminal device meets the preset Conditions can include:

The first number 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 is not received by the network device, the terminal device may continue to send the first signal on the first uplink carrier. However, the terminal device does not send unrestrictedly. When the number of times the terminal device sends the first signal on the first uplink carrier reaches a certain level and is equal to the second preset value, it can be considered that the first signal cannot be received even if the network device continues to be transmitted. Therefore, when the first number is equal to the second preset value, the terminal device can switch to the second uplink carrier to send the second signal, thereby improving the signal transmission success rate, thereby improving random access during the random access process. Success rate.

The value of the second preset value and the manner in which the terminal acquires the second preset value are not limited in this embodiment. Optionally, the second preset value may be a value preset in the terminal device. Optionally, the second preset value may be that the network device is configured 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 the first indication information sent by the network device, where the first indication information indicates that the terminal device sends the first signal on the first uplink carrier. The first maximum number of transmissions and the second maximum number of transmissions of the second signal on the second uplink carrier. At this time, the second preset value is the first maximum number of transmissions. The first maximum number of transmissions may be the same as or different from the second maximum number of transmissions. When the first maximum number of transmissions is the same as the second maximum number of transmissions, the first indication information may include only one maximum number of transmissions.

Optionally, as a third implementation manner of the preset condition, if the first parameter includes a first power used by the terminal device to send the first signal on the first uplink carrier, and the terminal device is sent on the first uplink carrier The first time of the signal, the first parameter determined by the terminal device meets the preset condition, and 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 foregoing first preset value and the second preset value may be randomly 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 the signal provided in this embodiment, S102, before the terminal device sends the second signal to the network device on the second uplink carrier, the method may further include:

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

The initial power of the second signal is the power of the terminal device to send 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 in the terminal device. This embodiment does not limit the value of the value.

As a second implementation manner, the determining, by the terminal device, the initial power used to send the second signal on the second uplink carrier may include:

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 second initial transmission of the second signal on the second uplink carrier. power.

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

The second indication information may have multiple implementation manners.

Optionally, the second indication information includes a first initial power that the terminal device sends the first signal on the first uplink carrier and a second initial power that sends 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 for transmitting 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 that is used by the terminal device to determine an initial power for transmitting the first signal on the first uplink carrier, and configured to determine, by the terminal device, 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 related parameters, and may be used by the existing network device to send the terminal device any parameter for determining the transmit power of the terminal device. The first related parameter and the second related 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 explained below by way of example.

The relevant parameters may include the initial reception target power of the sequence (identified as preambleInitialReceivedTargetPower). The terminal device calculates the sequence receiving target power (identified as PREAMBLE_RECEIVED_TARGET_POWER) according to the preambleInitialReceivedTargetPower using the formula (1). Then, according to the path loss value, the initial power of transmitting the first signal on the first uplink carrier or the initial power of transmitting the second signal on the second uplink carrier is calculated by using formula (2).

PREAMBLE_RECEIVED_TARGET_POWER=preambleInitialReceivedTargetPower+DE LTA_PREAMBLE Formula (1)

Where DELTA_PREAMBLE is a parameter predetermined by the terminal device. It can be preset or it can be notified to the terminal device by the network device.

Transmit_Power=PREAMBLE_RECEIVED_TARGET_POWER+PL formula (2)

The Transmit_Power indicates the initial power of the first signal or the second signal sent by the terminal device. The PL indicates the path loss value between the terminal device and the network device. The path loss value may be obtained by the terminal device by measurement, or may be pre-configured by the network device.

As a third implementation manner, the determining, by the terminal device, the initial power used to send the second signal on the second uplink carrier may include:

The terminal device determines that the initial power for transmitting the second signal on the second uplink carrier is equal to the power of the last signal transmitted by the terminal device on the first uplink carrier.

As a fourth implementation manner, the determining, by the terminal device, the initial power used to send the second signal on the second uplink carrier may include:

The terminal device determines a first transmission count value, wherein the first transmission count value is 1 or the value of the first number of times is incremented by one.

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

The following is a detailed description by way of example.

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

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

Among them, PREAMBLE_TRANSMISSION_COUNTER indicates the send count value. The powerRampingStep represents the power climb step value, which is a predetermined parameter for the terminal device. It can be preset or it can be notified to the terminal device by the network device.

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

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

The terminal device determines an initial number of transmissions of the second signal transmitted on the second uplink carrier.

The initial number of transmissions of the second signal is an initial value of the number of times the terminal device has transmitted 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 number of transmissions can be 0 or greater than 0.

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

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

If the first time that the terminal device has sent the first signal on the first uplink carrier is smaller than the second maximum transmission number of the second signal sent by the terminal device on the second uplink carrier, the terminal device determines to send on the second uplink carrier. The initial number of transmissions of the second signal is the first number of times.

Optionally, the method for sending a signal provided in this embodiment, where 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, and therefore, the terminal device needs to determine the first uplink carrier among the at least two uplink carriers.

Optionally, the terminal device may determine, according to a priority of the at least two uplink carriers, the first uplink carrier, where the priority device may be configured by the terminal device or configured by the network device. Taking FIG. 2 as an example, if the priority of the NR carrier is higher than the priority of the LTE uplink carrier, the NR carrier may be determined to be 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 device can perform downlink measurement on the NR carrier. Assuming that the measurement result of the NR carrier is greater than a 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 a preset threshold, the terminal device may determine that the LTE uplink carrier is the first uplink carrier. The value of the preset threshold is not limited in this embodiment.

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

The manner in which the first uplink carrier and the second uplink carrier are associated with each other and the manner in which the terminal device acquires the association relationship are not limited in this embodiment.

Optionally, the relationship between the association relationship or the association relationship may be preset in the terminal device. For example, the condition that the association relationship needs to be met may be that a first carrier with a high frequency is associated with a second carrier that is lower than the first carrier frequency. 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 the second carrier is multiple, each second carrier may also be configured with a priority, for example, the priority decreases according to the 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 the priority 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 between the first uplink carrier and the second uplink carrier may be that the network device is pre-configured 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 the fourth indication information sent by the network device, where the fourth indication information indicates the association relationship between the first uplink carrier and the second uplink carrier. Or the condition that the relationship needs to be met. 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 that F1 is associated with 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 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 described here.

Optionally, the sending method of the signal provided in this embodiment may further include: if the terminal device is out of synchronization, the method may further include:

When the terminal device changes from uplink out-of-synchronization to uplink synchronization, the terminal device transmits 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 that sends the uplink signal of the terminal device before the uplink out-of-synchronization.

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

In this implementation manner, the uplink signal is out of synchronization, and the uplink signal is sent by the switching carrier, so that the success rate of the transmitted signal can be improved, and the random access success rate is improved 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 device that sends the uplink signal before the uplink out-of-synchronization is the second uplink carrier, the The three uplink carriers may be the first uplink carrier.

In this implementation manner, although the terminal device has switched over the uplink carrier, and the first uplink carrier is switched to the second uplink carrier, the uplink signal is out of synchronization, and the uplink signal is transmitted by switching the uplink carrier again to improve the success of the transmission signal. Rate, and then improve 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 device that sends the uplink signal before the uplink out-of-synchronization is the second uplink carrier, The third uplink carrier may be any uplink carrier other than the first uplink carrier and the second uplink carrier of the at least three uplink carriers.

In this implementation manner, the uplink signal is out of synchronization, and the uplink signal is transmitted to the uplink carrier that has not been switched before, so that the success rate of the transmitted signal can be improved, and the random access success rate is improved in the random access process.

The embodiment provides a method for transmitting a signal, including: the terminal device sends a first signal to the network device on the first uplink carrier, where the first parameter determined by the terminal device meets a preset condition, the terminal device is in the first Sending a second signal to the network device on the second uplink carrier, and stopping sending the first signal to the network device on the first uplink carrier. In the method for transmitting a signal provided by this embodiment, when the terminal device is configured with at least two uplink carriers, when the terminal device sends an uplink signal on an uplink carrier that meets certain conditions, the uplink carrier may be switched and sent on another uplink carrier. The uplink signal improves the success rate of transmitting the uplink signal, thereby improving the random access success rate 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 entity may be a network device. As shown in FIG. 4, the method for receiving a signal provided by 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 a first maximum transmission number of the first signal sent by the terminal device on the first uplink carrier and a second maximum transmission frequency of the second signal on the second uplink carrier, where the second indication information indicates The terminal device transmits a first initial power of the first signal on the first uplink carrier and a 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 the first signal and the second signal both comprise a random preamble sequence.

Specifically, the network device configures at least two uplink carriers for the terminal device. The first uplink carrier indicates an uplink carrier before the terminal device switches itself, and may be any one of at least two uplink carriers configured by the network device for the terminal device. The second uplink carrier indicates an uplink carrier that is self-switched by the terminal device, and may be any one of the at least two uplink carriers configured by the network 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 the terminal device sends the uplink signal on all uplink carriers configured by the network device. The second indication information actually indicates the initial power of the uplink signal sent by the terminal device on all uplink carriers configured by the network device. The first indication information is used to provide a basis for determining, by the terminal device, the second uplink carrier. The second indication information is used to determine, for the terminal device, the initial power for transmitting 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 principle is similar, and details are not described herein again.

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

Specifically, for a specific terminal device, an uplink signal is usually sent only on one uplink carrier. If the terminal device does not switch the uplink carrier, the terminal device transmits 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 transmits 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, for a case where a plurality of terminal devices communicate with the network device, the network device may receive an uplink signal sent by each terminal device on the first uplink carrier and on the second uplink carrier.

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

The third indication information indicates that the terminal device sends the first maximum power of the first signal on the first uplink carrier and the second maximum power of the second signal on the second uplink carrier.

For the description of the third indication information, refer to the embodiment shown in FIG. 3 above, and the principles are similar, and details are not described herein again.

Optionally, the network device may send the 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 be met.

For the description of the fourth indication information, refer to the embodiment shown in FIG. 3 above, and the principles are similar, and details are not described herein again.

In the method for receiving a signal provided by this embodiment, in a random access process, the terminal device may switch the uplink carrier to send an uplink signal, and the network device may 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, and the method for receiving the signal provided in this embodiment improves the success rate of the 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 a method for transmitting a signal provided by the embodiment shown in FIG. As shown in FIG. 5, the terminal device provided by the 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.

The sending module 11 is configured to send a second signal to the network device on the second uplink carrier, and stop sending the first message to the network device on the first uplink carrier, where the first parameter determined by the processing module 12 meets the preset condition. a signal, where the first parameter includes a first power used by the transmitting module 11 to transmit the first signal on the first uplink carrier and/or a first time that the transmitting 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 the first signal and the second signal both comprise a random preamble sequence.

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

The first power is greater than the first preset value.

Optionally, if the first parameter includes the first time that the sending module 11 has sent the first signal on the first uplink carrier, the first parameter meets a preset condition, including:

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

Optionally, the receiving module 13 is further included.

The receiving module 13 is configured to receive second indication information that is 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 the second uplink power 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, an initial power for transmitting the second signal on the second uplink carrier.

Optionally, the processing module 12 is further configured to:

Determining that the initial power for transmitting the second signal on the second uplink carrier is equal to the power of the first signal sent by the transmitting module 11 on the first uplink carrier.

Optionally, the processing module 12 is further configured to:

The first transmit count value is determined, wherein the first transmit count value is 1 or the value of the first number of times is incremented by one.

An initial power for transmitting the second signal on the second uplink carrier is determined according to the first transmission count value.

Optionally, the receiving module 13 is further included. The receiving module 13 is used to:

Receiving first indication information sent by the network device, where the first indication information indicates a first maximum transmission number of the first signal sent by the sending module 11 on the first uplink carrier and a second maximum transmission time of the second signal on the second uplink carrier The number of transmissions.

The terminal device provided by the embodiment of the present application is used to perform the method for sending a signal provided by the method embodiment shown in FIG. 3 , and the technical principle and technical effects thereof are similar, and details are not described herein again.

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 used to perform the method for receiving a signal provided by the embodiment shown in FIG. As shown in FIG. 6, the network device provided by the embodiment of the present application may include:

The sending module 21 is configured to send the first indication information and/or the second indication information to the terminal device, where the first indication information indicates the first maximum number of transmissions of the first signal sent by the terminal device on the first uplink carrier, and the second Transmitting a second maximum number of transmissions of the second signal on the uplink carrier, 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 second signal on the second uplink carrier Two initial power. The frequency of the first uplink carrier is different from the frequency of the second uplink carrier, and the first signal and the second signal both comprise a random preamble sequence.

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

The network device provided by the embodiment of the present application is used to perform the method for receiving the signal provided by the method embodiment shown in FIG. 4, and the technical principle and the technical effect are similar, and details are not described herein again.

FIG. 7 is a schematic structural diagram of a terminal device according to 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, where the memory 32 is used to store an instruction, and the transceiver 33 is used for communication with other devices, and the processor 31 is configured to execute the instructions stored in the memory 32, so that the terminal device performs the sending method of the signal provided by the embodiment shown in FIG. The effect is similar and will not be described here.

FIG. 8 is a schematic structural diagram of a network device according to 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 configured to store an instruction, the transceiver. 43 for communicating with other devices, the processor 41 is configured to execute instructions stored in the memory 42 to enable the network device to perform the method for receiving signals provided by the embodiment shown in FIG. 4, and the specific implementation and technology The effect is similar and will not be described here.

It can be understood that the processor used by the network device or the terminal device in the present application may be a central processing unit (CPU), a general purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), and a field programmable gate array (FPGA). Or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. It is possible to implement or carry out the various illustrative logical blocks, modules and circuits described in connection with the present disclosure. The processor may also be a combination of computing functions, for example, including one or more microprocessor combinations, a combination of a DSP and a microprocessor, and the like.

One of ordinary skill in the art will appreciate that all or part of the steps to implement the various method embodiments described above may be accomplished by hardware associated with the program instructions. The aforementioned program can be stored in a computer readable storage medium. The program, when executed, performs the steps including the foregoing method embodiments; and the foregoing storage medium includes various media that can store program codes, such as a ROM, a RAM, a magnetic disk, or an optical disk.

It should be noted that the above embodiments are only used to explain the technical solutions of the embodiments of the present application, and are not limited thereto; although the embodiments of the present application are described in detail with reference to the foregoing embodiments, those skilled in the art It should be understood that the technical solutions described in the foregoing embodiments may be modified, or some or all of the technical features may be equivalently replaced; and the modifications or substitutions do not deviate from the essence of the corresponding technical solutions. The scope of the technical solution.

Claims (17)

A method for transmitting a signal, comprising: Transmitting, by the terminal device, the first signal to the network device on the first uplink carrier; If the first parameter determined by the terminal device meets the preset condition, the terminal device sends a second signal to the network device on the second uplink carrier, and stops on the first uplink carrier. Transmitting, by the network device, the first signal, where the first parameter includes a first power for the terminal device to send the first signal on the first uplink carrier, and/or the terminal device 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 a random leader sequence. The method according to claim 1, wherein if the first parameter comprises a first power for the terminal device to send the first signal on the first uplink carrier, the terminal device The determined first parameter satisfies the preset condition, including: The first power is greater than a first preset value. The method according to claim 1, wherein if the first parameter comprises the first time that the terminal device has sent the first signal on the first uplink carrier, the terminal device The determined first parameter satisfies the preset condition, including: The first number of times is equal to a second preset value. The method according to any one of claims 1 to 3, wherein before the sending, by the terminal device, the second signal to the network device on the second uplink carrier, the method further includes: The terminal device receives the second indication information that is sent by the network device, where the second indication information indicates that the terminal device sends the first initial power and the first signal of the first signal on the first uplink carrier. Transmitting, by the second uplink carrier, a second initial power of the second signal; Determining, by the terminal device, an initial power for transmitting the second signal on the second uplink carrier according to the second indication information. The method according to any one of claims 1 to 3, wherein before the sending, by the terminal device, the second signal to the network device on the second uplink carrier, the method further includes: Determining, by the terminal device, that an initial power for transmitting the second signal on the second uplink carrier is equal to a power of the last time that the terminal device sends the first signal on the first uplink carrier. The method according to any one of claims 1 to 3, wherein before the sending, by the terminal device, 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, where the first sending count value is 1 or the value of the first number of times is increased by 1; Determining, by the terminal device, an initial power for transmitting the second signal on the second uplink carrier according to the first sending count value. The method according to any one of claims 1 to 3, wherein before the sending, by the terminal device, the first signal to the network device on the first uplink carrier, the method further includes: Receiving, by the terminal device, first indication information that is sent by the network device, where the first indication information indicates a first maximum number of times that the terminal device sends the first signal on the first uplink carrier, and Transmitting a second maximum number of transmissions of the second signal on the second uplink carrier. A method for receiving a signal, comprising: The network device sends the first indication information and/or the second indication information to the terminal device, where the first indication information indicates that the terminal device sends the first maximum number of transmissions of the first signal on the first uplink carrier and is in the second Transmitting a second maximum number of transmissions of the second signal on the uplink carrier, 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 in the Transmitting, by the second uplink carrier, a second initial power of the second signal, where a frequency of the first uplink carrier is different from a frequency of the second uplink carrier, where the first signal and the second signal are both included Random leader sequence; 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. A terminal device, comprising: a sending module, configured to send a first signal to the network device on the first uplink carrier; The sending module is configured to send a second signal to the network device on the second uplink carrier, and stop on the first uplink carrier, where the first parameter determined by the processing module meets the preset condition. Transmitting, by the network device, the first signal, where the first parameter includes a first power for 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 a random leader sequence. The terminal device according to claim 9, wherein if the first parameter includes a first power for the sending module to send the first signal on the first uplink carrier, A parameter satisfies the preset conditions, including: The first power is greater than a first preset value. The terminal device according to claim 9, wherein the first parameter comprises the first number of times that the sending module has sent the first signal on the first uplink carrier, A parameter satisfies the preset conditions, including: The first number of times is equal to a second preset value. The terminal device according to any one of claims 9 to 11, further comprising a receiving module; The receiving module is configured to receive second indication information that is sent by the network device, where the second indication information indicates that the sending module sends the first initial power of the first signal on the first uplink carrier And transmitting a second initial power of 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 transmitting the second signal on the second uplink carrier. The terminal device according to any one of claims 9 to 11, wherein the processing module is further configured to: Determining that an initial power for transmitting the second signal on the second uplink carrier is equal to a power that the transmitting module sends the first signal last time on the first uplink carrier. The terminal device according to any one of claims 9 to 11, 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 is increased by 1; Determining, based on the first transmit count value, an initial power for transmitting the second signal on the second uplink carrier. The terminal device according to any one of claims 9 to 11, further comprising a receiving module; the receiving module is configured to: Receiving first indication information sent by the network device, where the first indication information indicates that the sending module sends the first maximum number of transmissions of the first signal on the first uplink carrier and in the second Sending a second maximum number of transmissions of the second signal on the uplink carrier. A network device, comprising: a sending module, configured to send first indication information and/or second indication information to the terminal device, where the first indication information indicates a first maximum number of transmissions of the first signal sent by the terminal device on the first uplink carrier Transmitting, by the second uplink carrier, a second maximum number of transmissions of the second signal, 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 Transmitting, by the second uplink carrier, a second initial power of the second signal, where the frequency of the first uplink carrier is different from the frequency of the second uplink carrier, the first signal and the second The signals all include a random preamble sequence; a receiving module, 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. A computer readable storage medium comprising instructions which, when executed on a computer, cause the computer to perform the method of any of claims 1-8.

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