CN112399545B - Signal sending method and device - Google Patents

Abstract

The application provides a signal sending method and device. The method comprises the following steps: the method comprises the following steps: determining a first transmit power for a first signal in a first time unit on a first carrier and a second transmit power for a second signal in a second time unit on a second carrier; when the second signal is a signal which can occupy the guaranteed power corresponding to other cell groups in the second cell group, determining the transmission power of the first signal as the third transmission power, transmitting the first signal with the third transmission power in a first time unit on the first carrier, and transmitting the second signal with the second transmission power in a second time unit on the second carrier. According to the scheme, when the second signal is the signal which can occupy the guaranteed power corresponding to other cell groups in the second cell group, the transmission of the second signal is preferentially ensured, the transmission of the signal which can occupy the guaranteed power corresponding to other cell groups can be preferentially ensured, and further the system performance can be improved.

Description

Signal sending method and device

Technical Field

The present application relates to the field of mobile communication technology, and in particular to a signal sending method and device.

Background technique

In the Long Term Evolution (LTE) system, the terminal device supports simultaneous access to two network devices. This access mode is called Dual Connectivity (DC), where one network device is the primary network device and the other network device is the secondary network device. One or more cells provided by the primary network device to the terminal device are called the Master Cell Group (MCG), and one or more cells provided by the secondary network device to the terminal device are called the Secondary Cell Group (SCG). In the development and evolution of wireless communication systems, operators will simultaneously deploy the fifth generation (5G) new radio interface (NR) system and the Long Term Evolution (LTE) system. In a dual connection scenario, the terminal device supports simultaneous access to the LTE network device and the NR network device. Because LTE is also called Evolved Universal Terrestrial Radio Access (E-UTRA), this access mode is called Evolved Universal Terrestrial Radio Access and New Radio Dual Connectivity (E-UTRA NR Dual Connectivity, EN-DC). In EN-DC mode, the LTE network device is the main network device, and the NR network device is the auxiliary network device. In another dual connection scenario, the terminal device can also support the new air interface and evolved universal terrestrial radio access dual connection (NR E-UTRA Dual Connectivity, NE-DC), that is, the NR network device is the main network device, and the LTE network device is the auxiliary network device. Since both EN-DC and NE-DC terminals will access network devices with two different radio access technologies, these DC modes can also be collectively referred to as multi-radio access technology dual connection (Multi-RAT Dual Connectivity, MR-DC). In addition, in another dual connection scenario, for terminal devices that only support NR, it can also access two different NR network devices at the same time. This type of connection is called NR-NR DC.

For wireless communication systems, they can be mainly divided into frequency division duplex (FDD) mode and time division duplex (TDD) mode according to different duplex modes. For wireless communication systems working in TDD mode, the system usually contains only one working frequency band, so this frequency band is also called an unpaired frequency band. For systems using unpaired frequency bands, within a period of time, within the area covered by the same network device, the entire working frequency band is only used for downlink communication, or only for uplink communication; for wireless communication systems working in FDD mode, the system usually contains two paired frequency bands for communication, one of which is used for downlink communication from network devices to terminal devices, and the other is used for uplink communication from terminal devices to network devices.

At present, a typical deployment method is that NR is deployed in TDD mode on unpaired frequency bands, such as frequency bands around 3.5GHz. In this deployment scenario, the cells in the MCG and SCG of the terminal device working in NR-NR DC mode are both in TDD mode.

In order to increase the rate at which terminal devices send uplink signals to network devices, terminal devices that usually work in dual connection mode can send uplink signals to network devices on at least two carriers at the same time in the same time period. However, the total power of uplink signals sent by terminal devices on all carriers is often limited, such as a maximum of no more than 23dBm. Therefore, if the total power of uplink signals sent by the terminal device on at least two carriers exceeds the maximum transmission power, the terminal device needs to actively reduce the transmission power on one or more carriers.

Currently, the method of adjusting the transmission power of the terminal device is not applicable to some scenarios, which may lead to a decrease in system performance.

Summary of the invention

The present application provides a signal sending method and device to improve system performance.

In a first aspect, the present application provides a signal sending method, the method comprising: determining a first transmission power for a first signal in a first time unit on a first carrier, and determining a second transmission power for a second signal in a second time unit on a second carrier, wherein the first carrier belongs to a first cell group, the second carrier belongs to a second cell group, the first time unit and the second time unit completely overlap or partially overlap in time, the sum of the first transmission power and the second transmission power is greater than the maximum transmission power of the terminal device, and the second transmission power is greater than the difference between the maximum transmission power and the first guaranteed power corresponding to the first cell group; when the second signal is a signal in the second cell group that can occupy the guaranteed power corresponding to other cell groups, determining the transmission power of the first signal to be a third transmission power, wherein the sum of the third transmission power and the second transmission power is not greater than the maximum transmission power; and, sending the first signal at the third transmission power in the first time unit on the first carrier, and sending the second signal at the second transmission power in the second time unit on the second carrier.

In a possible implementation method, the first signal is a signal in the first cell group that can be occupied by other cell group signals to ensure power.

In a second aspect, the present application provides a signal sending method, the method comprising: determining a first transmission power for a first signal in a first time unit on a first carrier, and determining a second transmission power for a second signal in a second time unit on a second carrier, wherein the first carrier belongs to a first cell group, the second carrier belongs to a second cell group, the first time unit and the second time unit completely overlap or partially overlap in time, the sum of the first transmission power and the second transmission power is greater than the maximum transmission power of the terminal device, and the second transmission power is greater than the difference between the maximum transmission power and the first guaranteed power corresponding to the first cell group; and when the second signal is a signal in the second cell group that can occupy the guaranteed power corresponding to other cell groups, and the first signal is a signal in the first cell group that can be occupied by the guaranteed power of other cell group signals, determining that the transmission power of the first signal is a third transmission power, wherein the sum of the third transmission power and the second transmission power is not greater than the maximum transmission power; in the The first signal is sent at the third transmission power in the first time unit on the first carrier, and the second signal is sent at the second transmission power in the second time unit on the second carrier; or, when the second signal is a signal in the second cell group that cannot occupy the guaranteed power corresponding to other cell groups, or the first signal is a signal in the first cell group that cannot be occupied by other cell group signals, determine that the transmission power of the first signal is a fourth transmission power and the transmission power of the second signal is a fifth transmission power, wherein the fourth transmission power is less than or equal to the first transmission power, the sum of the fourth transmission power and the fifth transmission power is not greater than the maximum transmission power, and the fifth transmission power is not greater than the difference between the maximum transmission power and the first guaranteed power; the first signal is sent at the fourth transmission power in the first time unit on the first carrier, and the second signal is sent at the fifth transmission power in the second time unit on the second carrier.

Based on the scheme of the first or second aspect above, when the second signal is a signal in the second cell group that can occupy the guaranteed power corresponding to other cell groups, the sending of the second signal is prioritized, that is, the sending power of the second signal is not reduced. Although the sending of the second signal needs to occupy the first guaranteed power corresponding to the first cell group, the sending power of the first signal is reduced. This scheme can achieve the priority guarantee of sending the signal that can occupy the guaranteed power corresponding to other cell groups, thereby improving the system performance.

Based on the above first aspect, or a possible implementation of the first aspect, or the second aspect:

In one possible implementation method, the signal that can occupy the guaranteed power corresponding to other cell groups is a signal corresponding to a high priority service, and/or the signal that can be occupied by the guaranteed power of other cell group signals is a signal corresponding to a low priority service.

In a possible implementation method, the high-priority service is a URLLC service, and the low-priority service is a non-URLLC service.

In a possible implementation method, before determining that the transmission power of the first signal is the third transmission power, the method also includes: receiving first indication information, the first indication information indicating the priority of the second signal; and determining, based on the priority, that the second signal is a signal that can occupy the guaranteed power corresponding to other cell groups.

In a possible implementation method, the priority of the second signal is the highest priority among at least two levels, and the at least two levels are levels divided according to services supported by the terminal device.

In a possible implementation method, the first indication information is received through a physical downlink control channel.

In one possible implementation method, second indication information is received from a first network device associated with the first cell group, and the second indication information is used to indicate that the first signal is a signal in the first cell group that can be occupied by other cell group signals with guaranteed power; and/or, third indication information is received from a second network device associated with the second cell group, and the third indication information is used to indicate that the second signal is a signal in the second cell group that can occupy the guaranteed power corresponding to other cell groups.

In a third aspect, the present application provides a signal sending device, which may be a terminal device or a chip for a terminal device. The device has the function of implementing the first aspect or each embodiment of the first aspect. The function may be implemented by hardware or by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above functions.

In a fourth aspect, the present application provides a signal sending device, which may be a terminal device or a chip for a terminal device. The device has the function of implementing the above-mentioned second aspect or each embodiment of the second aspect. The function may be implemented by hardware or by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above-mentioned functions.

In a fifth aspect, the present application provides a signal sending device, comprising: a processor and a memory; the memory is used to store computer-executable instructions, and when the device is running, the processor executes the computer-executable instructions stored in the memory, so that the device executes the method as described in the above aspects. The device can be a terminal device or a chip for a terminal device.

In a sixth aspect, the present application provides a signal sending device, including: a unit or means for executing each step of the above aspects. The device may be a terminal device.

In a seventh aspect, the present application provides a signal sending device, including a processor and an interface circuit, wherein the processor is used to implement the methods described in the above aspects through the interface circuit. The processor includes one or more. The device may be a chip for a terminal device.

In an eighth aspect, the present application provides a signal sending device, including a processor, which is connected to a memory and is used to call a program stored in the memory to execute the methods described in the above aspects. The memory can be located inside the device or outside the device. And the processor includes one or more. The device can be a terminal device or a chip for a terminal device.

In a ninth aspect, the present application further provides a computer-readable storage medium, wherein the computer-readable storage medium stores instructions, which, when executed on a computer, enable a processor to execute the methods described in the above aspects.

In a tenth aspect, the present application also provides a computer program product comprising instructions, which, when executed on a computer, enables the computer to execute the methods described in the above aspects.

In an eleventh aspect, the present application also provides a chip system, comprising: a processor, configured to execute the methods described in the above aspects.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1A is a schematic diagram of a dual-connection scenario in which a primary network device and a secondary network device are deployed at the same site;

FIG1B is a schematic diagram of a dual connection scenario in which a primary network device and a secondary network device are deployed at different sites;

FIG2 is a schematic diagram of a signal sending method provided by the present application;

FIG3A is an example diagram of initially determined transmit power;

FIG3B is an example diagram of an adjusted transmit power;

FIG3C is another example diagram of the adjusted transmit power;

FIG4 is a schematic diagram of a signal sending device provided by the present application;

FIG5 is a schematic diagram of another signal sending device provided in the present application.

Detailed ways

In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings. The specific operation method in the method embodiment can also be applied to the device embodiment or the system embodiment. In the description of the present application, unless otherwise specified, the meaning of "multiple" is two or more.

The scenario of application of the present application can be a scenario in which the terminal device works in dual connection. In the dual connection scenario, the terminal device is connected to the main network device and the auxiliary network device at the same time. It should be noted that the main network device and the auxiliary network device can be deployed on the same site or on different sites. Moreover, when the main network device and the auxiliary network device can be deployed on the same site, the main network device and the auxiliary network device can share the same set of hardware devices or use different hardware devices. As shown in Figure 1A, this is a schematic diagram of a dual connection scenario in which the main network device and the auxiliary network device are deployed on the same site. As shown in Figure 1B, this is a schematic diagram of a dual connection scenario in which the main network device and the auxiliary network device are deployed on different sites.

In the present application, the terminal device may be a wireless terminal device capable of receiving network device scheduling and indication information, and the wireless terminal device may be a device that provides voice and/or data connectivity to a user, or a handheld device with wireless connection function, or other processing devices connected to a wireless modem. The terminal device may communicate with one or more core networks or the Internet via a radio access network (e.g., radio access network, RAN). The terminal device may be a mobile terminal device, such as a mobile phone (or "cellular" phone, mobile phone), a computer and a data card, for example, a portable, pocket-sized, handheld, computer-built-in or vehicle-mounted mobile device that exchanges language and/or data with a radio access network. For example, personal communication service (PCS) phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (PDAs), tablet computers (Pads), computers with wireless transceiver functions, and other devices. The wireless terminal device may also be referred to as a system, a subscriber unit, a subscriber station, a mobile station, a mobile station (MS), a remote station (remotestation), an access point (AP), a remote terminal device (remote terminal), an access terminal device (access terminal), a user terminal device (user terminal), a user agent, a subscriber station (SS), a customer premises equipment (CPE), a terminal, a user equipment (UE), a mobile terminal (MT), etc. In addition, the terminal device may also be a vehicle, a vehicle-mounted device, or a wearable device that can communicate with a network device.

A network device (including a primary network device and a secondary network device) is an entity on the network side for transmitting or receiving signals. A network device can be a device for communicating with a mobile device. A network device can be an access point (AP) in a wireless local area network (WLAN), an evolved Node B (eNB or eNodeB) in LTE, or a relay station or access point, or a new generation Node B (gNodeB) in an NR system, or a network device in a future evolved public land mobile network (PLMN) network, etc.

In an embodiment of the present application, a network device provides services for a cell, and a terminal device communicates with the network device through the communication resources (e.g., frequency domain resources, or spectrum resources) used by the cell. The cell may be a cell corresponding to a network device (e.g., a base station), and the cell may belong to a macro base station or a base station corresponding to a small cell. The small cell here may include: a metro cell, a micro cell, a picocell, a femtocell, etc. These small cells have the characteristics of small coverage and low transmission power, and are suitable for providing high-speed data transmission services. In addition, in other possible cases, the network device may be other devices that provide wireless communication functions for terminal devices. The embodiments of the present application do not limit the specific technology and specific device form used by the network device. For the convenience of description, in an embodiment of the present application, a device that provides wireless communication functions for terminal devices is referred to as a network device.

In dual connection mode, there are two cell groups, namely the Master Cell Group (MCG) and the Secondary Cell Group (SCG). The MCG includes a Primary Cell (PCell) and, optionally, one or more Secondary Cells (Scells). The SCG includes a Primary Secondary Cell (PSCell) and, optionally, one or more SCells. The network device that manages the MCG is called the primary network device, and the network device that manages the SCG is called the secondary network device.

In the embodiment of the present application, the primary network device is an LTE network device (such as eNB), a 5G network device (such as gNB) or one of the network devices in the future communication system, and the secondary network device is also an LTE network device, a 5G network device or one of the network devices in the future communication system. And the primary network device and the secondary network device can be network devices of the same standard, such as both are eNBs, or network devices of different standards, such as the primary network device is eNB and the secondary network device is gNB. This application does not limit the communication standards of the primary network device and the secondary network device.

A possible solution to the problem of needing to adjust the transmission power in the background technology is as follows. However, this solution has some problems, which are described below.

In the prior art, the protocol predefines the priorities of different signals and channels. The terminal device can determine the priority of the signal according to the type of uplink signal sent on the carrier in the MCG and SCG in the same time period, and reduce the power of the signal with low priority (for example, the power of the signal can be reduced to 0), thereby giving priority to the power of the signal with high priority. The prior art considers the signal priority and/or CG priority to determine the adjustment of the transmission power.

The CG priority is as follows: the priority of the signal on the MCG is higher than the priority of the signal on the SCG. The signal priority is in the following order from high to low, that is, the signal at the front has a higher priority:

1) Physical Uplink Shared CHannel (PUCCH) carrying Acknowledgement (ACK), Negative Acknowledgement (NACK), and Scheduling Request (SR);

2) Physical Uplink Shared Channel (PUSCH) carrying ACK and NACK;

3) PUCCH carrying channel state information (CSI);

4) PUSCH carrying CSI;

5) PUSCH that does not carry ACK, NACK or CSI;

6) Sounding Reference Signal (SRS)

Furthermore, in the prior art, the network device will also configure a minimum guaranteed power for each CG of the terminal device. A CG can give priority to using the minimum guaranteed power configured by the network device for it. When the minimum guaranteed power is not fully used by the CG, the remaining power can be used by another CG. For example, for two given CGs, including CG1 and CG2, the network device configures parameter r1=0.2 for CG1, then the terminal device determines that the guaranteed power of CG1 is 20% of the maximum transmission power, and the terminal device will give priority to this part of power for CG1; and configures parameter r2=0.3 for CG2, then the guaranteed power of CG2 is determined to be 30% of the maximum transmission power, and the terminal device will give priority to this part of power for CG2. Therefore, for the remaining power (50% of the maximum transmission power) after removing the minimum guaranteed powers of CG1 and CG2, the terminal device can determine the power allocation according to the above-mentioned signal priority and/or CG priority.

The existing technology supports a variety of services, such as Ultra-Reliable and Low-Latency Communication (URLLC) services and non-URLLC services, such as enhanced Mobile Broadband (eMBB) services. Usually, the importance of URLLC services is higher than that of non-URLLC services, but the existing technology does not consider the priority of different services. If the existing technical solution is followed, when the non-URLLC service of MCG is concurrent with the URLLC service of SCG, the non-URLLC service will give priority to the transmission power of the terminal device, which will not meet the needs of the URLLC service.

To this end, an embodiment of the present application provides a signal sending method, which can ensure the priority sending of signals with guaranteed power that can occupy other cell groups.

For the convenience of explanation, some nouns are represented by symbols in this application, as described below:

Maximum transmit power of the terminal device: Pmax;

A first transmission power of the first signal: PA1;

Second transmission power of the second signal: PA2;

A third transmission power of the first signal: PA3;

A fourth transmission power of the first signal: PA4;

The actual transmission power of the first signal: P1;

fifth transmission power of the second signal: PA5;

The actual transmission power of the second signal: P2;

The first guaranteed power corresponding to the first cell group: PB1;

The second guaranteed power corresponding to the second cell group: PB2;

The transmission power shared by the first cell group and the second cell group: PB3.

In addition, the following conditions must be met:

1) P1+P2<=Pmax;

2)PB1+PB2+PB3=Pmax.

The first signal is a signal in a first time unit on a first carrier, or it is understood that the first signal is sent in a first time unit on the first carrier. The second signal is a signal in a second time unit on a second carrier, or it is understood that the second signal is sent in a second time unit on the second carrier.

The first time unit and the second time unit completely overlap or partially overlap in time. Optionally, the first time unit is one or more symbols, time slots, mini-time slots, or subframes, and the second time unit is one or more symbols, time slots, mini-time slots, or subframes.

In the present application, the main network device may be referred to as the first network device, and the MCG under the main network device may be referred to as the first cell group. Accordingly, the auxiliary network device may be referred to as the second network device, and the SCG under the auxiliary network device may be referred to as the second cell group. Alternatively, the auxiliary network device may be referred to as the first network device, and the SCG under the auxiliary network device may be referred to as the first cell group. Accordingly, the main network device may be referred to as the second network device, and the MCG under the main network device may be referred to as the second cell group.

The first cell group includes one or more carriers, and the first carrier belongs to the first cell group. The second cell group includes one or more carriers, and the second carrier belongs to the second cell group.

Optionally, the maximum transmission power (Pmax) of the terminal device is configured by the network device or determined by the terminal device.

Optionally, the first guaranteed power (PB1) corresponding to the first cell group is configured to the terminal device by the network device associated with the first cell group, and the second guaranteed power (PB2) corresponding to the second cell group is configured to the terminal device by the network device associated with the second cell group.

Optionally, the first signal is a physical random access channel (PRACH), PUCCH, PUSCH or SRS, and the second signal is PRACH, PUCCH, PUSCH or SRS.

As shown in FIG2 , it is a schematic flow chart of a signal sending method provided in the present application. The method can be executed by a terminal device or by a chip used for a terminal device.

The method comprises the following steps:

Step 201, determining a first transmit power (PA1) for a first signal, and determining a second transmit power (PA2) for a second signal.

For example, the first transmit power and the second transmit power may be determined in the following manner:

Taking the first signal and the second signal as physical uplink shared channels as an example, referring to Section 7.1.1 of the technical specification 38.213v15.5.0 of the 3rd Generation Partnership Project (3GPP), the terminal device can determine the power P _PUSCH,b,f,c (i,j,q _d ,l) of sending the physical uplink shared channel according to the following formula:

The explanation of each parameter can refer to the explanation in this technical specification.

Thus, the terminal device can determine the first transmission power for the first signal and/or the second transmission power for the second signal according to this method. When the first signal/second signal is other channels, such as a physical uplink control channel or a sounding reference signal, the terminal device can refer to the contents of other chapters in the technical specification to determine the first transmission power for the first signal and/or the second transmission power for the second signal.

The above PA1 and PA2 meet the following requirements:

1) PA1+PA2>Pmax;

2), PA2>Pmax-PB1.

Since PA1+PA2>Pmax, the first signal cannot be sent with PA1 and the second signal cannot be sent with PA2 at the same time, that is, it is necessary to reduce the transmission power of the first signal, or reduce the transmission power of the second signal, or reduce the transmission power of the first signal and the transmission power of the second signal at the same time.

Since PA2>Pmax-PB1, that is, PA2>PB2+PB3, the second guaranteed power corresponding to the second cell group and the transmission power shared by the first cell group and the second cell group can no longer meet the transmission power of the second signal. Therefore, if the transmission power of the second signal is not reduced, the transmission of the second signal needs to occupy the first guaranteed power corresponding to the first cell group.

According to the above-mentioned prior art solution, the second signal is not allowed to occupy the first guaranteed power corresponding to the first cell group, that is, the transmission power of the second signal must be reduced (from PA2 to a lower value, so that the reduced transmission power is less than or equal to Pmax-PB1). In the present application, in some cases, it is not necessary to reduce the transmission power of the second signal, that is, the transmission of the second signal is given priority. Specifically, the second signal is allowed to occupy the first guaranteed power corresponding to the first cell group, which is explained separately below.

Scenario 1: The second signal is a signal in the second cell group that can occupy the guaranteed power corresponding to other cell groups.

Based on the first scenario, the following steps 202 to 203 are executed.

Step 202: When the second signal is a signal in the second cell group that can occupy the guaranteed power corresponding to other cell groups, the transmission power of the first signal is determined to be the third transmission power, wherein the sum of the third transmission power (PA3) and the second transmission power (PA2) is not greater than the maximum transmission power (Pmax).

That is, the transmission power of the first signal is reduced from the first transmission power (PA1) to the third transmission power (PA3). The transmission power of the second signal remains unchanged and is maintained at the second transmission power (PA2). That is, the actual transmission power (P1) of the first signal is equal to PA3, and the actual transmission power (P2) of the second signal is equal to PA2.

For example, referring to FIG3A , it is an example diagram of initially determined transmission power, wherein PA2+PA1>Pmax, and PA2>PB2+PB3. FIG3B is an example diagram of adjusted transmission power, wherein PA2+PA3<=Pmax.

Step 203: Send a first signal at a third transmission power in a first time unit on the first carrier, and send a second signal at a second transmission power in a second time unit on the second carrier.

It should be noted that, as another implementation of the first scenario, the first scenario can also be replaced by: the second signal can occupy the guaranteed power corresponding to other cell groups, and the first signal can be occupied by the guaranteed power of other cell group signals. Or it can be understood that when the second signal can occupy the guaranteed power corresponding to other cell groups, and the first signal can be occupied by the guaranteed power of other cell group signals, the above steps 202-203 are performed.

For situation one, since the second signal is a signal in the second cell group that can occupy the guaranteed power corresponding to other cell groups, the transmission power of the second signal is prioritized and the second signal is allowed to occupy the guaranteed power of the first signal.

Scenario 2: The second signal is a signal in the second cell group that cannot occupy the guaranteed power corresponding to other cell groups, or the first signal is a signal in the first cell group that cannot be occupied by signals from other cell groups.

Based on the second scenario, the following steps 204 to 205 are executed.

Step 204, when the second signal is a signal in the second cell group that cannot occupy the guaranteed power corresponding to other cell groups, or the first signal is a signal in the first cell group that cannot be occupied by other cell group signals, determine that the transmission power of the first signal is the fourth transmission power (PA4) and the transmission power of the second signal is the fifth transmission power (PA5), wherein the sum of the fourth transmission power and the fifth transmission power is not greater than the maximum transmission power (Pmax), and the fifth transmission power is not greater than the difference between the maximum transmission power and the first guaranteed power (PB1).

That is, the transmission power of the first signal is reduced from the first transmission power (PA1) to the fourth transmission power (PA4), and the transmission power of the second signal is reduced from the second transmission power (PA2) to the fifth transmission power (PA5), and after the transmission power of the second signal is reduced to PA5, it no longer occupies the guaranteed power of the first signal. It should be noted that the transmission power of the first signal may not be reduced, that is, the transmission power of the first signal remains at PA1, that is, PA4=PA1.

That is, the actual transmission power (P1) of the first signal is equal to PA4, and the actual transmission power (P2) of the second signal is equal to PA5.

For example, referring to Figure 3A, it is an example diagram of initially determined transmit power, where PA2+PA1>Pmax, and PA2>PB2+PB3. Figure 3C is an example diagram of adjusted transmit power, where PA4+PA5<=Pmax, and PA5<=PB2+PB3, and PA4<=PA1.

Step 205: Send a first signal at a fourth transmit power in a first time unit on a first carrier, and send a second signal at a fifth transmit power in a second time unit on a second carrier.

For the second situation, since the second signal is a signal in the second cell group that cannot occupy the guaranteed power corresponding to other cell groups, or the first signal is a signal in the first cell group that cannot be occupied by other cell group signals, the transmission power of the second signal is no longer prioritized, that is, the second signal is not allowed to occupy the guaranteed power of the first signal.

Based on the above scheme, when the second signal is a signal in the second cell group that can occupy the guaranteed power corresponding to other cell groups, the sending of the second signal is prioritized, that is, the sending power of the second signal is not reduced. Although the sending of the second signal needs to occupy the first guaranteed power corresponding to the first cell group, the sending power of the first signal is reduced. This scheme can achieve the priority guarantee of sending signals that can occupy the guaranteed power corresponding to other cell groups, thereby improving system performance.

With respect to the above-mentioned situation 1 or situation 2, two different implementation methods are introduced below for signals that can occupy the guaranteed power corresponding to other cell groups and signals that can be occupied by the guaranteed power of other cell group signals.

Implementation method 1: The signal that can occupy the guaranteed power corresponding to other cell groups is the signal corresponding to the high-priority service, and the signal that can be occupied by the guaranteed power of other cell group signals is the signal corresponding to the low-priority service. The signal corresponding to the high-priority service here can also be called a high-priority signal, and the signal corresponding to the low-priority service can also be called a low-priority signal.

As an implementation method, the high-priority service here may be, for example, a URLLC service, and the low-priority service may be a non-URLLC service. The non-URLLC service includes, but is not limited to, an enhanced mobile broadband (eMBB) service and a machine type communication (MTC) service.

As another implementation method, the high-priority service here may also be a Vehicle-to-Everything (V2X) service, and the low-priority service may be a non-V2X service, including but not limited to an eMBB service and an MTC service.

There are at least two ways to divide the signals corresponding to the services of the terminal equipment:

Method 1: The services of the terminal device are divided into two levels. The signals corresponding to the services of the higher level are high priority signals, and the signals corresponding to the services of the lower level are low priority signals.

Method 2: The services of the terminal device are divided into L levels, where L is an integer greater than 2, and the signals corresponding to the services greater than or equal to the first level in the L levels are high priority signals, and the signals corresponding to the services less than the first level are low priority signals, and the first level is a level other than the maximum level and the minimum level in the L levels. The first level may be predefined by the protocol or configured by the network device.

Taking L=10 as an example, the service levels of the terminal equipment are divided from low to high into: level 1, level 2, level 3, level 4, level 5, level 6, level 7, level 8, level 9, level 10, and the first level is 6, so:

Low priority signals include: signals corresponding to level 1 services, signals corresponding to level 2 services, signals corresponding to level 3 services, signals corresponding to level 4 services, and signals corresponding to level 5 services;

High priority signals include: signals corresponding to level 6 services, signals corresponding to level 7 services, signals corresponding to level 8 services, signals corresponding to level 9 services, and signals corresponding to level 10 services.

Among them, level 1, level 2, level 3, level 4, and level 5 can be further divisions for non-URLLC services. For example, if the non-URLLC service is eMBB service, the eMBB service can be further divided into 5 levels, and level 1, level 2, level 3, level 4, and level 5 correspond to eMBB service 1, eMBB service 2, eMBB service 3, eMBB service 4, and eMBB service 5, respectively.

Level 6, level 7, level 8, level 9, and level 10 can be further divisions for URLLC services. For example, URLLC services can be further divided into 5 levels. Level 6, level 7, level 8, level 9, and level 10 correspond to URLLC service 1, URLLC service 2, URLLC service 3, URLLC service 4, and URLLC service 5, respectively.

Implementation method 2: When the difference between the level of the service corresponding to the second signal and the level of the service corresponding to the first signal is greater than or equal to the first threshold, the second signal is a signal that can occupy the guaranteed power corresponding to other cell groups, and the first signal is a signal that can be occupied by other cell group signals. Alternatively, it can be understood that the second signal is a signal that can occupy the guaranteed power corresponding to the first signal, and the first signal is a signal that can be occupied by the second signal.

The first threshold here may be predefined by the protocol or configured by the network device.

Take the example in method 2 of the above-mentioned implementation method 1 as an example. For example, the first threshold is 3, the level of the service corresponding to the second signal is level 6, and the level of the service corresponding to the first signal is level 2. Since 6-2>3, it is determined that the second signal is a signal that can occupy the guaranteed power corresponding to other cell groups, and the first signal is a signal that can be occupied by the guaranteed power of other cell group signals.

For another example, the first threshold is 3, the level of the service corresponding to the second signal is level 6, and the level of the service corresponding to the first signal is level 4. Since 6-4<3, the second signal is determined to be a signal that cannot occupy the guaranteed power corresponding to other cell groups, and the first signal is a signal that cannot be occupied by the guaranteed power of other cell group signals.

Based on this scheme, when the difference between the level of the service corresponding to the second signal and the level of the service corresponding to the first signal is greater than or equal to the first threshold, the terminal device prioritizes the transmission of the second signal, that is, does not reduce the transmission power of the second signal, although the transmission of the second signal needs to occupy the first guaranteed power corresponding to the first cell group, but chooses to reduce the transmission power of the first signal. This scheme can achieve priority protection of the transmission of signals that can occupy the guaranteed power corresponding to other cell groups, thereby improving system performance.

For the above-mentioned implementation method 1, in one implementation method, before the above-mentioned step 202 or step 204, an indication information may also be received, and the indication information indicates the priority of the second signal; according to the priority of the second signal indicated by the indication information, the type of the second signal may be determined, for example, when the indication information is the first indication information, the second signal is determined to be a signal that can occupy the guaranteed power corresponding to other cell groups, and when the indication information is the fourth indication information, the second signal is determined to be a signal that cannot occupy the guaranteed power corresponding to other cell groups. The indication information may be received through a physical downlink control channel. As a specific example, the above-mentioned indication information may be carried in a first field in a physical downlink control channel, and the value of the first field includes the first indication information (also referred to as the first state) and the fourth indication information (also referred to as the second state). When the value of the first field is the first indication information, the first field indicates that the priority of the second signal is a high priority, so that the second signal may be determined to be a signal that can occupy the guaranteed power corresponding to other cell groups, or the second signal may be determined to be a high priority signal. When the value of the first field is the fourth indication information, the first field indicates that the priority of the second signal is a low priority, so that the second signal can be determined as a signal that cannot occupy the guaranteed power corresponding to other cell groups, or the second signal is determined to be a low priority signal. Exemplarily, the first field here includes 1 bit, and the bit is in the first state when the value is 1, and in the second state when the value is 0. For the above-mentioned implementation method one or implementation method two, in an implementation method, before the above-mentioned step 202 or step 204, an indication information can also be received from the first network device associated with the first cell group, and the indication information is used to indicate that the first signal is a signal in the first cell group that can be occupied by other cell group signals to ensure power or to indicate that the first signal is a signal in the first cell group that cannot be occupied by other cell group signals to ensure power. As a specific example, the above-mentioned indication information can be carried in the second field in the physical downlink control channel, and the value of the second field includes the second indication information (also called the first state) and the fifth indication information (also called the second state). When the value of the second field is the second indication information, the second field indicates that the first signal is a signal in the first cell group that can be occupied by other cell group signals to ensure power. When the value of the second field is the fifth indication information, the second field indicates that the first signal is a signal in the first cell group that cannot be occupied by other cell group signals to ensure power. Exemplarily, the second field here includes 1 bit, and when the bit value is 1, it is in the first state, and when the bit value is 0, it is in the second state.

For the above-mentioned implementation method 1 or implementation method 2, in one implementation method, before the above-mentioned step 202 or step 204, an indication information can also be received from the second network device associated with the second cell group, and the indication information is used to indicate that the second signal is a signal in the second cell group that can occupy the guaranteed power corresponding to other cell groups or to indicate that the second signal is a signal in the second cell group that cannot occupy the guaranteed power corresponding to other cell groups. As a specific example, the above-mentioned indication information can be carried in the third field in the physical downlink control channel, and the value of the third field includes the third indication information (also called the first state) and the sixth indication information (also called the second state). When the value of the third field is the third indication information, the third field indicates that the second signal is a signal in the second cell group that can occupy the guaranteed power corresponding to other cell groups. When the value of the third field is the sixth indication information, the third field indicates that the second signal is a signal in the second cell group that cannot occupy the guaranteed power corresponding to other cell groups. Exemplarily, the third field here includes 1 bit, and the bit value is 1 when it is in the first state, and the value is 0 when it is in the second state.

As shown in FIG4 , it is a possible exemplary block diagram of a signal sending device involved in the present application, and the device 400 may exist in the form of software or hardware. The device 400 may include: a processing unit 402 and a communication unit 401. As an implementation, the communication unit 401 may include a receiving unit and a sending unit. The processing unit 402 is used to control and manage the actions of the device 400. The communication unit 401 is used to support the communication between the device 400 and other network entities.

Among them, the processing unit 402 can be a processor or a controller, for example, it can be a general-purpose central processing unit (CPU), a general-purpose processor, a digital signal processing (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 can implement or execute various exemplary logic blocks, modules and circuits described in conjunction with the disclosure of this application. The processor can also be a combination that implements a computing function, for example, including a combination of one or more microprocessors, a combination of DSP and microprocessors, and the like. The communication unit 401 is an interface circuit of the device for receiving signals from other devices. For example, when the device is implemented in the form of a chip, the communication unit 401 is an interface circuit of the chip for receiving signals from other chips or devices, or an interface circuit of the chip for sending signals to other chips or devices.

The device 400 may be a terminal device in any of the above embodiments, and may also be a chip for a terminal device. For example, when the device 400 is a terminal device, the processing unit 402 may be, for example, a processor, and the communication unit 401 may be, for example, a transceiver. Optionally, the transceiver may include a radio frequency circuit. For example, when the device 400 is a chip for a terminal device, the processing unit 402 may be, for example, a processor, and the communication unit 401 may be, for example, an input/output interface, a pin or a circuit, etc. The processing unit 402 may execute computer-executable instructions stored in a storage unit. Optionally, the storage unit may be a storage unit in the chip, such as a register, a cache, etc. The storage unit may also be a storage unit located outside the chip in the terminal device, such as a read-only memory (ROM) or other types of static storage devices that can store static information and instructions, a random access memory (RAM), etc.

In the first embodiment, the apparatus 400 is a terminal device, and the processing unit 402 is used to determine a first transmission power for a first signal in a first time unit on a first carrier, and to determine a second transmission power for a second signal in a second time unit on a second carrier, wherein the first carrier belongs to a first cell group, the second carrier belongs to a second cell group, the first time unit and the second time unit completely overlap or partially overlap in time, the sum of the first transmission power and the second transmission power is greater than the maximum transmission power of the terminal device, and the second transmission power is greater than the difference between the maximum transmission power and the first guaranteed power corresponding to the first cell group; when the second signal is a signal in the second cell group that can occupy the guaranteed power corresponding to other cell groups, the transmission power of the first signal is determined to be a third transmission power, wherein the sum of the third transmission power and the second transmission power is not greater than the maximum transmission power; the communication unit 401 is used to send the first signal at the third transmission power in the first time unit on the first carrier, and to send the second signal at the second transmission power in the second time unit on the second carrier.

In a possible implementation method, the first signal is a signal in the first cell group that can be occupied by other cell group signals to ensure power.

In a second embodiment, the apparatus 400 is a terminal device, and the processing unit 402 is used to determine a first transmit power for a first signal in a first time unit on a first carrier, and to determine a second transmit power for a second signal in a second time unit on a second carrier, wherein the first carrier belongs to a first cell group, the second carrier belongs to a second cell group, the first time unit and the second time unit completely overlap or partially overlap in time, the sum of the first transmit power and the second transmit power is greater than the maximum transmit power of the terminal device, and the second transmit power is greater than the difference between the maximum transmit power and the first guaranteed power corresponding to the first cell group;

The processing unit 402 is further used to determine that the transmission power of the first signal is a third transmission power when the second signal is a signal in the second cell group that can occupy the guaranteed power corresponding to other cell groups, and the first signal is a signal in the first cell group that can be occupied by the guaranteed power of other cell group signals, wherein the sum of the third transmission power and the second transmission power is not greater than the maximum transmission power; the communication unit 401 is used to send the first signal at the third transmission power within the first time unit on the first carrier, and to send the second signal at the second transmission power within the second time unit on the second carrier; or

The processing unit 402 is also used to determine that the transmission power of the first signal is a fourth transmission power and the transmission power of the second signal is a fifth transmission power when the second signal is a signal of the second cell group that cannot occupy the guaranteed power corresponding to other cell groups, or the first signal is a signal of the first cell group that cannot be occupied by other cell group signals. The fourth transmission power is less than or equal to the first transmission power, the sum of the fourth transmission power and the fifth transmission power is not greater than the maximum transmission power, and the fifth transmission power is not greater than the difference between the maximum transmission power and the first guaranteed power. The communication unit 401 is used to send the first signal at the fourth transmission power within the first time unit on the first carrier, and to send the second signal at the fifth transmission power within the second time unit on the second carrier.

Based on the first embodiment or the second embodiment:

In one possible implementation method, the signal that can occupy the guaranteed power corresponding to other cell groups is a signal corresponding to a high priority service, and/or the signal that can be occupied by the guaranteed power of other cell group signals is a signal corresponding to a low priority service.

In a possible implementation method, the high-priority service is a URLLC service, and the low-priority service is a non-URLLC service.

In a possible implementation method, the communication unit 401 is also used to receive first indication information before the processing unit 402 determines that the transmission power of the first signal is the third transmission power, and the first indication information indicates the priority of the second signal; the processing unit 402 is also used to determine that the second signal is a signal that can occupy the guaranteed power corresponding to other cell groups based on the priority.

In a possible implementation method, the priority of the second signal is the highest priority among at least two levels, and the at least two levels are levels divided according to services supported by the terminal device.

In a possible implementation method, the first indication information is received through a physical downlink control channel.

In a possible implementation method, the communication unit 401 is also used to receive second indication information from a first network device associated with the first cell group, the second indication information being used to indicate that the first signal is a signal in the first cell group that can be occupied by other cell group signals with guaranteed power; and/or, to receive third indication information from a second network device associated with the second cell group, the third indication information being used to indicate that the second signal is a signal in the second cell group that can occupy the guaranteed power corresponding to other cell groups.

It can be understood that the specific implementation process and corresponding beneficial effects of the device when used for the above-mentioned signal sending method can be referred to the relevant description in the aforementioned method embodiment, and will not be repeated here.

If the device is a terminal device, the terminal device is presented in the form of dividing various functional modules in an integrated manner. The "module" here can refer to a specific ASIC, circuit, processor and memory that executes one or more software or firmware programs, integrated logic circuit, and/or other devices that can provide the above functions. In a simple embodiment, those skilled in the art can imagine that the terminal device can take the form shown in Figure 5.

For example, the processor 502 in FIG. 5 may call the computer execution instructions stored in the memory 501 to enable the terminal device to execute the method in the above method embodiment.

Specifically, the functions/implementation processes of the communication unit 401 and the processing unit 402 in FIG4 can be implemented by the processor 502 in FIG5 calling the computer execution instructions stored in the memory 501. Alternatively, the functions/implementation processes of the processing unit 402 in FIG4 can be implemented by the processor 502 in FIG5 calling the computer execution instructions stored in the memory 501, and the functions/implementation processes of the communication unit 401 in FIG4 can be implemented by the communication interface 503 in FIG5.

Optionally, when the device 400 is a chip or a circuit, the function/implementation process of the communication unit 401 can also be implemented through pins or circuits.

As shown in FIG5 , it is a schematic diagram of another signal sending device provided by the present application, and the device can be a terminal device in the above embodiment. The device 500 includes: a processor 502, a communication interface 503, and a memory 501. Optionally, the device 500 can also include a communication line 504. Among them, the communication interface 503, the processor 502 and the memory 501 can be interconnected through the communication line 504; the communication line 504 can be a peripheral component interconnect standard (PCI) bus or an extended industry standard architecture (EISA) bus, etc. The communication line 504 can be divided into an address bus, a data bus, a control bus, etc. For ease of representation, only one thick line is used in FIG5, but it does not mean that there is only one bus or one type of bus.

The processor 502 may be a CPU, a microprocessor, an ASIC, or one or more integrated circuits for controlling the execution of the program of the present application.

The communication interface 503 uses any transceiver-like device for communicating with other devices or communication networks, such as Ethernet, radio access network (RAN), wireless local area networks (WLAN), wired access networks, etc.

The memory 501 may be a ROM or other types of static storage devices that can store static information and instructions, a RAM or other types of dynamic storage devices that can store information and instructions, or an electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM) or other optical disc storage, optical disc storage (including compressed optical disc, laser disc, optical disc, digital versatile disc, Blu-ray disc, etc.), a magnetic disk storage medium or other magnetic storage device, or any other medium that can be used to carry or store the desired program code in the form of instructions or data structures and can be accessed by a computer, but is not limited thereto. The memory may exist independently and be connected to the processor via a communication line 504. The memory may also be integrated with the processor.

The memory 501 is used to store computer-executable instructions for executing the solution of the present application, and the execution is controlled by the processor 502. The processor 502 is used to execute the computer-executable instructions stored in the memory 501, thereby realizing the signal transmission method provided by the above embodiment of the present application.

Optionally, the computer-executable instructions in the embodiments of the present application may also be referred to as application code, which is not specifically limited in the embodiments of the present application.

Those of ordinary skill in the art will appreciate that the various digital numbers such as the first and second involved in the present application are only for the convenience of description, and are not used to limit the scope of the embodiments of the present application, and also represent the order of precedence. "And/or" describes the association relationship of the associated objects, indicating that there may be three relationships, for example, A and/or B, which can represent: A exists alone, A and B exist at the same time, and B exists alone. The character "/" generally indicates that the associated objects before and after are in an "or" relationship. "At least one" refers to one or more. At least two refers to two or more. "At least one", "any one" or similar expressions refer to any combination of these items, including any combination of single items (individuals) or plural items (individuals). For example, at least one item (individuals, species) of a, b, or c can represent: a, b, c, a-b, a-c, b-c, or a-b-c, where a, b, c can be single or multiple. "Multiple" refers to two or more, and other quantifiers are similar. In addition, when the singular forms “a,” “an,” and “the” appear, they do not mean “one or only one,” but rather “one or more than one,” unless the context clearly dictates otherwise. For example, “a device” means one or more of such devices.

In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the process or function described in the embodiment of the present application is generated in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from a website site, computer, server or data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) mode to another website site, computer, server or data center. The computer-readable storage medium may be any available medium that a computer can access or a data storage device such as a server or data center that includes one or more available media integrated. The available medium may be a magnetic medium, (e.g., a floppy disk, a hard disk, a tape), an optical medium (e.g., a DVD), or a semiconductor medium (e.g., a solid-state drive (SSD)), etc.

The various illustrative logic units and circuits described in the embodiments of the present application can be implemented or operated by a general-purpose processor, a digital signal processor, an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, a discrete gate or transistor logic, a discrete hardware component, or the design of any combination of the above to implement or operate the described functions. The general-purpose processor can be a microprocessor, and optionally, the general-purpose processor can also be any traditional processor, controller, microcontroller or state machine. The processor can also be implemented by a combination of computing devices, such as a digital signal processor and a microprocessor, a plurality of microprocessors, one or more microprocessors combined with a digital signal processor core, or any other similar configuration to implement.

The steps of the method or algorithm described in the embodiments of the present application can be directly embedded in the software unit executed by the hardware, the processor, or a combination of the two. The software unit can be stored in a RAM memory, a flash memory, a ROM memory, an EPROM memory, an EEPROM memory, a register, a hard disk, a removable disk, a CD-ROM or other storage media of any form in the art. Exemplarily, the storage medium can be connected to the processor so that the processor can read information from the storage medium and can write information to the storage medium. Optionally, the storage medium can also be integrated into the processor. The processor and the storage medium can be arranged in an ASIC.

These computer program instructions may also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, whereby the instructions executed on the computer or other programmable device provide steps for implementing the functions specified in one or more processes in the flowchart and/or one or more boxes in the block diagram.

Although the present application has been described in conjunction with specific features and embodiments thereof, it is obvious that various modifications and combinations may be made thereto without departing from the spirit and scope of the present application. Accordingly, this specification and the drawings are merely exemplary illustrations of the present application as defined by the appended claims, and are deemed to have covered any and all modifications, variations, combinations or equivalents within the scope of the present application. Obviously, a person skilled in the art may make various modifications and variations to the present application without departing from the scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims (23)

1. A signal transmission method, comprising:

determining a first transmission power for a first signal in a first time unit on a first carrier and determining a second transmission power for a second signal in a second time unit on a second carrier, wherein the first carrier belongs to a first cell group, the second carrier belongs to a second cell group, the first time unit and the second time unit completely overlap or partially overlap in time, the sum of the first transmission power and the second transmission power is greater than the maximum transmission power of a terminal device, and the second transmission power is greater than the difference between the maximum transmission power and a first guard power corresponding to the first cell group;

when the second signal is a signal which can occupy the guaranteed power corresponding to other cell groups in the second cell group, determining the transmission power of the first signal as third transmission power, wherein the sum of the third transmission power and the second transmission power is not more than the maximum transmission power; and

the first signal is transmitted at the third transmit power for the first time unit on the first carrier and the second signal is transmitted at the second transmit power for the second time unit on the second carrier.

2. The method of claim 1, wherein the first signal is a signal in the first cell group that is capable of being power guaranteed by other cell group signals.

3. A signal transmission method, comprising:

determining a first transmission power for a first signal in a first time unit on a first carrier and determining a second transmission power for a second signal in a second time unit on a second carrier, wherein the first carrier belongs to a first cell group, the second carrier belongs to a second cell group, the first time unit and the second time unit completely overlap or partially overlap in time, the sum of the first transmission power and the second transmission power is greater than the maximum transmission power of a terminal device, and the second transmission power is greater than the difference between the maximum transmission power and a first guard power corresponding to the first cell group; and

when the second signal is a signal which can occupy the guaranteed power corresponding to other cell groups in the second cell group and the first signal is a signal which can occupy the guaranteed power by other cell group signals in the first cell group, determining that the transmission power of the first signal is third transmission power, wherein the sum of the third transmission power and the second transmission power is not more than the maximum transmission power; transmitting the first signal at the third transmit power for the first time unit on the first carrier and the second signal at the second transmit power for the second time unit on the second carrier; or alternatively

When the second signal is a signal which cannot occupy guaranteed power corresponding to other cell groups in the second cell group or the first signal is a signal which cannot occupy guaranteed power by other cell group signals in the first cell group, determining that the transmission power of the first signal is fourth transmission power and the transmission power of the second signal is fifth transmission power, wherein the fourth transmission power is smaller than or equal to the first transmission power, the sum of the fourth transmission power and the fifth transmission power is not larger than the maximum transmission power, and the fifth transmission power is not larger than the difference between the maximum transmission power and the first guaranteed power; the first signal is transmitted at the fourth transmit power for the first time unit on the first carrier and the second signal is transmitted at the fifth transmit power for the second time unit on the second carrier.

4. A method according to any one of claims 1-3, wherein the signal capable of occupying guaranteed power corresponding to the other cell group is a signal corresponding to a high priority service, and/or the signal capable of occupying guaranteed power by the other cell group signal is a signal corresponding to a low priority service.

5. The method of claim 4, wherein the high priority traffic is very high reliability very low latency communication URLLC traffic and the low priority traffic is non-URLLC traffic.

6. A method according to any of claims 1-3, wherein before said determining that the transmission power of the first signal is the third transmission power, the method further comprises:

receiving first indication information, wherein the first indication information indicates the priority of the second signal; and

and determining the second signal as a signal which can occupy the guaranteed power corresponding to other cell groups according to the priority.

7. The method of claim 6, wherein,

the priority of the second signal is the highest priority of at least two grades, and the at least two grades are the grades of the service supported by the terminal equipment.

8. The method of claim 6, wherein,

the first indication information is received through a physical downlink control channel.

9. A method according to any one of claims 1-3, wherein the method further comprises:

receiving second indication information from a first network device associated with the first cell group, wherein the second indication information is used for indicating that the first signal is a signal which can occupy guaranteed power by other cell group signals in the first cell group; and/or the number of the groups of groups,

And receiving third indication information from second network equipment associated with the second cell group, wherein the third indication information is used for indicating that the second signal is a signal which can occupy the guaranteed power corresponding to other cell groups in the second cell group.

10. A signal transmission device, comprising a processing unit and a communication unit;

the processing unit is configured to determine a first transmission power for a first signal in a first time unit on a first carrier, and determine a second transmission power for a second signal in a second time unit on a second carrier, where the first carrier belongs to a first cell group, the second carrier belongs to a second cell group, the first time unit and the second time unit overlap completely or partially in time, a sum of the first transmission power and the second transmission power is greater than a maximum transmission power of a terminal device, and the second transmission power is greater than a difference between the maximum transmission power and a first guard power corresponding to the first cell group; when the second signal is a signal which can occupy the guaranteed power corresponding to other cell groups in the second cell group, determining the transmission power of the first signal as third transmission power, wherein the sum of the third transmission power and the second transmission power is not more than the maximum transmission power; and

The communication unit is configured to transmit the first signal at the third transmit power in the first time unit on the first carrier, and transmit the second signal at the second transmit power in the second time unit on the second carrier.

11. The apparatus of claim 10, wherein the first signal is a signal in the first cell group that is capable of being power guaranteed by other cell group signals.

12. A signal transmission device, comprising a processing unit and a communication unit;

the processing unit is configured to determine a first transmission power for a first signal in a first time unit on a first carrier, and determine a second transmission power for a second signal in a second time unit on a second carrier, where the first carrier belongs to a first cell group, the second carrier belongs to a second cell group, the first time unit and the second time unit overlap completely or partially in time, a sum of the first transmission power and the second transmission power is greater than a maximum transmission power of a terminal device, and the second transmission power is greater than a difference between the maximum transmission power and a first guard power corresponding to the first cell group; and

The processing unit is further configured to determine that a transmission power of the first signal is a third transmission power when the second signal is a signal capable of occupying guaranteed power corresponding to other cell groups in the second cell group and the first signal is a signal capable of occupying guaranteed power by signals of other cell groups in the first cell group, where a sum of the third transmission power and the second transmission power is not greater than the maximum transmission power; the communication unit is configured to transmit the first signal at the third transmission power in the first time unit on the first carrier, and transmit the second signal at the second transmission power in the second time unit on the second carrier; or alternatively

The processing unit is further configured to determine that, when the second signal is a signal that cannot occupy guaranteed power corresponding to another cell group in the second cell group, or the first signal is a signal that cannot occupy guaranteed power by another cell group signal in the first cell group, the transmission power of the first signal is a fourth transmission power and the transmission power of the second signal is a fifth transmission power, where the fourth transmission power is less than or equal to the first transmission power, a sum of the fourth transmission power and the fifth transmission power is not greater than the maximum transmission power, and the fifth transmission power is not greater than a difference between the maximum transmission power and the first guaranteed power; the communication unit is configured to transmit the first signal at the fourth transmit power in the first time unit on the first carrier, and transmit the second signal at the fifth transmit power in the second time unit on the second carrier.

13. The apparatus according to any one of claims 10-12, wherein the signal capable of occupying guaranteed power corresponding to the other cell group is a signal corresponding to a high priority service, and/or the signal capable of occupying guaranteed power by the other cell group signal is a signal corresponding to a low priority service.

14. The apparatus of claim 13, wherein the high priority traffic is very high reliability very low latency communication URLLC traffic and the low priority traffic is non-URLLC traffic.

15. The apparatus according to any of claims 10-12, wherein the communication unit is further configured to receive first indication information before the processing unit determines that the transmission power of the first signal is the third transmission power, the first indication information indicating a priority of the second signal;

and the processing unit is further used for determining that the second signal is a signal which can occupy the guaranteed power corresponding to other cell groups according to the priority.

16. The apparatus of claim 15, wherein the device comprises a plurality of sensors,

the priority of the second signal is the highest priority of at least two grades, and the at least two grades are the grades of the service supported by the terminal equipment.

17. The apparatus of claim 15, wherein the device comprises a plurality of sensors,

the first indication information is received through a physical downlink control channel.

18. The apparatus of any of claims 10-12, wherein the communication unit is further configured to:

receiving second indication information from a first network device associated with the first cell group, wherein the second indication information is used for indicating that the first signal is a signal which can occupy guaranteed power by other cell group signals in the first cell group; and/or the number of the groups of groups,

and receiving third indication information from second network equipment associated with the second cell group, wherein the third indication information is used for indicating that the second signal is a signal which can occupy the guaranteed power corresponding to other cell groups in the second cell group.

19. A signal transmission apparatus, comprising: a processor and interface circuitry, the processor being configured to communicate with a network device via the interface circuitry and to perform the method of any of claims 1-9.

20. A signalling device comprising a processor for interfacing with a memory and for invoking a program stored in said memory to perform the method as claimed in any of claims 1-9.

21. A signaling device, characterized by a processor and a memory, wherein the memory is adapted to store computer executable instructions which, when executed by the processor, cause the device to perform the method according to any of claims 1-9.

22. A terminal device comprising an apparatus as claimed in any one of claims 10 to 18.

23. A storage medium having stored thereon a computer program or instructions which, when executed, cause a processor to perform the method of any of claims 1-9.