CN112399545B

CN112399545B - Signal sending method and device

Info

Publication number: CN112399545B
Application number: CN201910758366.8A
Authority: CN
Inventors: 谢信乾; 郭志恒; 费永强; 毕文平
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2019-08-16
Filing date: 2019-08-16
Publication date: 2024-04-12
Anticipated expiration: 2039-08-16
Also published as: CN112399545A

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

Background

In a long term evolution (Long term evolution, LTE) system, a terminal device supports simultaneous access to two network devices, in a manner called dual connectivity (Dual Connectivity, DC), where one network device is a primary network device and the other network device is a secondary network device, where one or more cells served by the primary network device to the terminal device are called a primary cell group (Master Cell Group, MCG), and one or more cells served by the secondary network device to the terminal device are called a secondary cell group (Secondary Cell Group, SCG). In the evolution and development process of the wireless communication system, operators may deploy a fifth generation (5th generation,5G) new air interface (New radio interface, NR) system and a long term evolution (Long term evolution, LTE) system at the same time, and in a dual-connection scenario, a terminal device supports a network device that is simultaneously accessed to LTE and a network device that is not simultaneously accessed to NR, because LTE is also called evolved universal terrestrial radio access (Evolved Universal Terrestrial Radio Access, E-UTRA), and thus, this access mode is called evolved universal terrestrial radio access and new air interface dual-connection (E-UTRA NR Dual Connectivity, EN-DC). In EN-DC mode, the network device of LTE is a primary network device and the network device of NR is a secondary network device. In yet another dual connectivity scenario, the terminal device may also support new air interface and evolved universal terrestrial radio access dual connectivity (NR E-UTRA Dual Connectivity, NE-DC), i.e. the network device of NR is the primary network device and the network device of LTE is the secondary network device. Since both EN-DC and NE-DC terminals will access network devices of two different radio access technologies, these DC modes may also be collectively referred to as Multi-radio access technology dual connectivity (Multi-RAT Dual Connectivity, MR-DC). In addition, in yet another dual connectivity scenario, for a terminal device that only supports NR, it may also access two different NR network devices simultaneously, such connectivity being referred to as NR-nrdc.

The wireless communication system can be divided into a frequency division duplex (Frequency Division Duplex, FDD) mode and a time division duplex (Time Division Duplex, TDD) mode according to the difference of duplex modes, wherein the system usually only comprises one operating frequency band for the wireless communication system operating in TDD mode, so the frequency band is also called unpaired frequency band. For a system using unpaired frequency bands, in a period of time, the whole working frequency band is only used for downlink communication or only used for uplink communication in an area covered by the same network equipment; for wireless communication systems operating in FDD mode, the system typically includes two paired frequency bands for communication, one for network device to terminal device downstream communication and the other for terminal device to network device upstream communication.

Currently, a typical deployment is where NR deploys in a TDD mode on unpaired frequency bands, such as frequency bands around 3.5 GHz. In this deployment scenario, the cells in both the MCG and SCG of the terminal device operating in NR-NR DC mode are in TDD mode.

In order to increase the rate at which the terminal device transmits uplink signals to the network device, the terminal device that normally operates in the dual-connection mode may transmit uplink signals to the network device on at least two carriers simultaneously in the same time period, but the total power of the terminal device that transmits uplink signals on all carriers is often limited, e.g. cannot exceed 23dBm at maximum, so if the total power of the terminal device that transmits uplink signals 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 for adjusting the transmission power by the terminal device is not suitable for some situations, which may result in a decrease in system performance.

Disclosure of Invention

The application provides a signal sending method and device for improving system performance.

In a first aspect, the present application provides a signal transmission method, including: 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 and 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 larger than the maximum transmission power of the terminal device, and the second transmission power is larger 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 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.

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

In a second aspect, the present application provides a signal transmission 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 and 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 larger than the maximum transmission power of the terminal device, and the second transmission power is larger 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 a 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 when the second signal is a signal which cannot occupy the guaranteed power corresponding to other cell groups in the second cell group or the first signal is a signal which cannot occupy the 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.

Based on the scheme of the first aspect or the second aspect, when the second signal is a 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 guaranteed, that is, the transmission power of the second signal is not reduced, although the transmission of the second signal needs to occupy the first guaranteed power corresponding to the first cell group, the transmission power of the first signal is reduced, and the scheme can realize the transmission of the signal which can preferentially guarantee the guaranteed power corresponding to other cell groups, so that the system performance can be improved.

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

in one possible implementation method, the signal capable of occupying the guaranteed power corresponding to the other cell group is a signal corresponding to a high priority service, and/or the signal capable of occupying the guaranteed power by the signal of the other cell group is a signal corresponding to a low priority service.

In one possible implementation, the high priority traffic is a URLLC traffic and the low priority traffic is a non-URLLC traffic.

In a possible implementation method, before the determining that the transmission power of the first signal is the third transmission power, the method further includes: receiving first indication information, wherein the first indication information indicates the priority of the second signal; and determining that the second signal is a signal which can occupy the guaranteed power corresponding to other cell groups according to the priority.

In one possible implementation method, the priority of the second signal is the highest priority of at least two classes, where the at least two classes are the classes classified by the services supported by the terminal device.

In one possible implementation, 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, where the second indication information is used to indicate that the first signal is a signal in the first cell group that can occupy guaranteed power by other cell group signals; and/or receiving third indication information from the 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.

In a third aspect, the present application provides a signal transmitting apparatus, which may be a terminal device, or may be a chip for a terminal device. The apparatus has the functionality to implement embodiments of the first aspect or aspects described above. The functions can be realized by hardware, and can also be realized by executing corresponding software by hardware. The hardware or software includes one or more modules corresponding to the functions described above.

In a fourth aspect, the present application provides a signal transmitting apparatus, which may be a terminal device, or may be a chip for a terminal device. The apparatus has the functionality to implement the second aspect or embodiments of the second aspect described above. The functions can be realized by hardware, and can also be realized by executing corresponding software by hardware. The hardware or software includes one or more modules corresponding to the functions described above.

In a fifth aspect, the present application provides a signal transmission apparatus, including: a processor and a memory; the memory is configured to store computer-executable instructions that, when executed by the apparatus, cause the apparatus to perform the method described in the above aspects. The apparatus may be a terminal device or a chip for a terminal device.

In a sixth aspect, the present application provides a signal transmission apparatus, including: including means or methods for performing the steps of the various aspects described above. The apparatus may be a terminal device.

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

In an eighth aspect, the present application provides a signaling device, including a processor, configured to be connected to a memory, and configured to invoke a program stored in the memory, so as to perform the method described in the above aspects. The memory may be located within the device or may be located external to the device. And the processor includes one or more. The apparatus may be a terminal device or a chip for a terminal device.

In a ninth aspect, the present application also provides a computer readable storage medium having instructions stored therein which, when run on a computer, cause a processor to perform the method of the above aspects.

In a tenth aspect, the present application also provides a computer program product comprising instructions which, when run on a computer, cause the computer to perform the method of the above aspects.

In an eleventh aspect, the present application further provides a chip system, including: a processor for performing the method of the above aspects.

Drawings

FIG. 1A is a schematic diagram of a dual connectivity scenario where a primary network device and a secondary network device are deployed at the same site;

FIG. 1B is a schematic diagram of a dual connectivity scenario where a primary network device and a secondary network device are deployed at different sites;

Fig. 2 is a schematic flow chart of a signal sending method provided in the present application;

fig. 3A is an exemplary diagram of an initially determined transmit power;

FIG. 3B is an exemplary graph of an adjusted transmit power;

FIG. 3C is a diagram illustrating yet another example of adjusted transmit power;

fig. 4 is a schematic diagram of a signal sending device provided in the present application;

fig. 5 is a schematic diagram of another signal transmission device provided in the present application.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the present application more apparent, the present application will be described in further detail with reference to the accompanying drawings. The specific method of operation in the method embodiment may also be applied to the device embodiment or the system embodiment. In the description of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more.

The scenario of the application may be a scenario in which the terminal device operates in dual connectivity. In the dual connectivity scenario, the terminal device accesses both the primary network device and the secondary network device. It should be noted that the primary network device and the secondary network device may be deployed on the same site, or may be deployed on different sites. And when the main network device and the auxiliary network device can be deployed at the same site, the main network device and the auxiliary network device can share the same set of hardware devices, and can also use different hardware devices. As shown in fig. 1A, a dual-connection scenario is schematically shown where a primary network device and a secondary network device are deployed at the same site. As shown in fig. 1B, a dual connectivity scenario is schematically illustrated in which a primary network device and a secondary network device are deployed at different sites.

In this 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 functionality, or other processing device 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), and may be a mobile terminal device such as a mobile phone (or "cellular" phone), computer and data card, e.g., a portable, pocket, hand-held, computer-built-in or vehicle-mounted mobile device that exchanges voice and/or data with the radio access network. Such as personal communication services (personal communication service, PCS) phones, cordless phones, session Initiation Protocol (SIP) phones, wireless local loop (wireless local loop, WLL) stations, personal digital assistants (personal digital assistant, PDAs), tablet computers (Pad), computers with wireless transceiver capabilities, and the like. The wireless terminal device may also be referred to as a system, subscriber unit (subscriber unit), subscriber station (subscriber station), mobile Station (MS), remote station (AP), access Point (AP), remote terminal device (remote), access terminal device (access terminal), user terminal device (user terminal), user agent (user agent), user station (subscriber station, SS), user equipment (customer premises equipment, CPE), terminal (terminal), user Equipment (UE), mobile Terminal (MT), etc. Further, the terminal device may also be a vehicle, an in-vehicle device, or a wearable device, etc. capable of communicating with the network device.

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

In the embodiment of the present application, the network device provides services for a cell, and the terminal device communicates with the network device through a communication resource (for example, a frequency domain resource, or a spectrum resource) used by the cell, where the cell may be a cell corresponding to the network device (for example, a base station), and the cell may belong to a macro base station, or may belong to a base station corresponding to a small cell (small cell), where the small cell may include: urban cells (Metro cells), micro cells (Micro cells), pico cells (Pico cells), femto cells (Femto cells) and the like, and the small cells have the characteristics of small coverage area and low transmitting power and are suitable for providing high-rate data transmission services. Furthermore, the network device may be other means of providing wireless communication functionality for the terminal device, as other possibilities. The embodiment of the application does not limit the specific technology and the specific device form adopted by the network device. For convenience of description, in the embodiments of the present application, an apparatus that provides a wireless communication function for a terminal device is referred to as a network device.

In dual connectivity mode, there are two cell groups, a primary cell group (Master Cell Group, MCG) and a secondary cell group (Secondary Cell Group, SCG). Wherein the MCG comprises a Primary Cell (PCell), optionally one or more Secondary cells (Scell), and the SCG comprises a Primary Secondary Cell (Primary Secondary Cell, PSCell), optionally one or more scells. The network device managing the MCG is referred to as a primary network device, and the network device managing the SCG is referred to as a secondary network device.

In this embodiment of the present application, the primary network device is one of an LTE network device (e.g., eNB), a 5G network device (e.g., gNB), or a network device in a future communication system, and the secondary network device is also one of an LTE network device, a 5G network device, or a network device in a future communication system. And the main network device and the auxiliary network device may be network devices of the same system, for example, all are enbs, or may be network devices of different systems, for example, the main network device is an eNB, and the auxiliary network device is a gNB. The communication modes of the main network equipment and the auxiliary network equipment are not limited.

One possible solution to the problem of the need to adjust the transmission power in the background art is as follows, but there are some problems with this solution, which will be described below.

In the prior art, priorities of different signals and channels are predefined in a protocol, and a terminal device can determine the priority of a signal according to the type of uplink signals sent on carriers in an MCG and an SCG in the same time period, and reduce the power of a signal with low priority (for example, can reduce the power of the signal to 0), so as to preferentially ensure the power of a signal with high priority. This prior art considers signal priority and/or CG priority to determine adjusting transmit power.

The CG priority is specifically: the signals on the MCG have a higher priority than the signals on the SCG. The signal priority is from high to low in the following order, i.e. the signal priority before is higher:

1) A physical uplink control CHannel (Physical Uplink Shared chnnel, PUCCH) carrying an Acknowledgement (ACK), a negative Acknowledgement (Negative Acknowledgement, NACK), a scheduling request (Scheduling Request, SR);

2) A physical uplink shared CHannel (Physical Uplink Shared CHannel, PUSCH) carrying ACK, NACK;

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

4) PUSCH carrying CSI;

5) PUSCH without ACK, NACK or CSI;

6) Sounding reference signals (Sounding Reference Signal, SRS).

Further, in the prior art, the network device may also configure a minimum guaranteed power for each CG of the terminal device, where one CG may preferentially use the minimum guaranteed power configured for the network device, and when the minimum guaranteed power is not fully used by the CG, the remaining power may be used by another CG. For example, for given two CGs, including CG1 and CG2, the network device configures CG1 with parameter r1=0.2, and the terminal device determines that the guaranteed power of CG1 is 20% of the maximum transmission power, and the terminal device will preferentially use this part of power for CG1; configuring CG2 with parameter r2=0.3, determining that the guaranteed power of CG2 is 30% of the maximum transmit power, and the terminal device prioritizes this power for CG2. So that for the power remaining after the minimum guaranteed power of CG1 and CG2 is removed (50% of the maximum transmission power), the terminal device may determine the allocation of power according to the signal priority and/or CG priority described above.

A variety of services are supported in the prior art, such as Ultra-Reliable and Low-Latency Communication (URLLC) services and non-URLLC services, including, for example, enhanced mobile broadband (enhanced Mobile Broadband, eMBB) services. Typically the importance of the ullc traffic is higher than the non-ullc traffic, whereas the prior art does not consider the priority of the different traffic. If the non-URLLC service of the MCG is concurrent with the URLLC service of the SCG according to the prior art scheme, the non-URLLC service will preferentially use the transmission power of the terminal device, which will not meet the requirements of the URLLC service.

Therefore, the embodiment of the application provides a signal sending method, which can ensure the preferential sending of the signal which can occupy other cell groups and ensure the power.

For convenience of description, some terms are denoted by symbols in the present application, respectively, as follows:

maximum transmission power of terminal equipment: pmax;

first transmit power of the first signal: PA1;

second transmit power of the second signal: PA2;

third transmit power of the first signal: PA3;

fourth transmit power of the first signal: PA4;

actual transmit power of the first signal: p1;

fifth transmission power of the second signal: PA5;

actual transmit power of the second signal: p2;

first protection power corresponding to the first cell group: PB1;

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

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

And, it is required to satisfy:

1)、P1+P2<＝Pmax；

2)、PB1+PB2+PB3＝Pmax。

the first signal is a signal in a first time unit on the first carrier, or is understood to be sent in the first time unit on the first carrier. The second signal is a signal in a second time unit on the second carrier or is understood to be transmitted in a second time unit on the second carrier.

The first time unit and the second time unit are completely overlapped or partially overlapped in time. Optionally, the first time unit is one or more symbols, slots, minislots, or subframes, and the second time unit is one or more symbols, slots, minislots, or subframes.

In this application, the master network device may be referred to as a first network device, and the MCG under the master network device may be referred to as a first cell group. Accordingly, the secondary network device is referred to as a second network device, and the SCG under the secondary network device is referred to as a second cell group. Alternatively, the secondary network device may also be referred to as a first network device, and the SCG under the secondary network device may be referred to as a first cell group. Accordingly, the primary network device is referred to as a second network device, and the MCG under the primary network device is referred to as a 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 transmit power (Pmax) of the terminal device is configured by the network device or determined by the terminal device.

Optionally, the first guaranteed power (PB 1) 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 (PB 2) 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 (Physical Random Access Channel, PRACH), PUCCH, PUSCH, or SRS, and the second signal is PRACH, PUCCH, PUSCH or SRS.

As shown in fig. 2, a flow chart of a signaling method provided in the present application is shown, where the method may be performed by a terminal device or a chip for the terminal device.

The method comprises the following steps:

step 201, a first transmit power (PA 1) is determined for a first signal and a second transmit power (PA 2) is determined for a second signal.

For example, the first transmission power and the second transmission power may be determined as follows:

taking the example of the first signal and the second signal as physical uplink shared channels, reference is made to section 7.1.1 of technical Specification 38.213v15.5.0 of the third Generation partnership project (3rdgeneration partnership project,3GPP)The terminal device can determine the power P for transmitting the physical uplink shared channel according to the following formula _PUSCH,b,f,c (i,j,q _d ,l)：

Wherein the interpretation of the individual parameters can be referred to in the specification.

The terminal device may thus determine a first transmit power for the first signal and/or a second transmit power for the second signal according to this method. When the first signal/second signal is another channel, such as a physical uplink control channel or a sounding reference signal, the terminal device may determine the first transmission power for the first signal and/or determine the second transmission power for the second signal with reference to the content of other sections in the technical specification.

The above PA1 and PA2 satisfy:

1)、PA1+PA2>Pmax；

2)、PA2>Pmax-PB1。

since PA1+ PA2> Pmax, the first signal cannot be transmitted with PA1 and the second signal cannot be transmitted with PA2 at the same time, i.e. the transmission power of the first signal needs to be reduced, or the transmission power of the second signal needs to be reduced, or both the transmission power of the first signal and the transmission power of the second signal.

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 cannot meet the transmission power of the second signal, and 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 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-PB 1), and in this application, in some cases, the transmission power of the second signal may not need to be reduced, that is, the transmission of the second signal is preferentially satisfied, specifically, the second signal is allowed to occupy the first guaranteed power corresponding to the first cell group, which will be described below respectively.

In the first case, the second signal is a signal which can occupy the guaranteed power corresponding to other cell groups in the second cell group.

Based on this case one, the following steps 202-203 are performed.

Step 202, when the second signal is a signal capable of occupying guaranteed power corresponding to other cell groups in the second cell group, determining that the transmission power of the first signal is a third transmission power, where the sum of the third transmission power (PA 3) and the second transmission power (PA 2) 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 (PA 1) to the third transmission power (PA 3). While the transmit power of the second signal is unchanged, remains at the second transmit power (PA 2). That is, the actual transmit power (P1) of the first signal is equal to PA3 and the actual transmit power (P2) of the second signal is equal to PA2.

For example, referring to fig. 3A, an exemplary diagram of the initially determined transmit power is shown. Wherein, PA2+pa1> Pmax, and PA2> pb2+pb3. Fig. 3B is an example graph of the adjusted transmission power, PA2+ PA3< = Pmax.

Step 203, transmitting the first signal at a third transmit power for a first time unit on the first carrier and transmitting the second signal at a second transmit power for a second time unit on the second carrier.

In addition, as another implementation manner of the first case, the first case may be replaced by: the second signal can occupy the guaranteed power corresponding to the other cell group, and the first signal can be occupied by the guaranteed power of the other cell group signal. Or it is understood that when the second signal can occupy the guaranteed power corresponding to the other cell group and the first signal can occupy the guaranteed power by the other cell group signal, the above steps 202-203 are performed.

For the first case, since the second signal is a signal that can occupy the guaranteed power corresponding to the other cell group in the second cell group, the transmission power of the second signal is preferentially satisfied, and the second signal is allowed to occupy the guaranteed power of the first signal.

In the second case, the second signal is a signal which cannot occupy the guaranteed power corresponding to other cell groups in the second cell group, or the first signal is a signal which cannot occupy the guaranteed power by the signals of other cell groups in the first cell group.

Based on this case two, the following steps 204-205 are performed.

In step 204, when the second signal is a signal that cannot occupy the guaranteed power corresponding to the other cell group in the second cell group, or the first signal is a signal that cannot be occupied by the other cell group signal in the first cell group, it is determined that the transmission power of the first signal is a fourth transmission power (PA 4) and the transmission power of the second signal is a fifth transmission power (PA 5), where 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 (PB 1).

I.e. the transmit power of the first signal is reduced from the first transmit power (PA 1) to the fourth transmit power (PA 4) and the transmit power of the second signal is reduced from the second transmit power (PA 2) to the fifth transmit power (PA 5), and the guaranteed power of the first signal is no longer occupied after the transmit power of the second signal is reduced to PA5. Note that the transmission power of the first signal may not be reduced, that is, the transmission power of the first signal may be maintained to PA1, that is, PA 4=pa 1.

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

For example, referring to fig. 3A, an example plot of the initially determined transmit power is shown where PA2+ PA1> Pmax and PA2> pb2+ PB3. Fig. 3C is an example graph of adjusted transmit power, PA4+ PA5< = Pmax, and PA5< = pb2+ PB3, and PA4< = PA1.

Step 205, transmitting the first signal at a fourth transmit power for a first time unit on the first carrier and transmitting the second signal at a fifth transmit power for a second time unit on the second carrier.

For the second case, since the second signal is a signal that cannot occupy the guaranteed power corresponding to the other cell groups in the second cell group, or the first signal is a signal that cannot be occupied by the other cell group signal in the first cell group, the transmission power of the second signal is not preferentially satisfied, 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 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, that is, the transmission power of the second signal is not reduced, although the transmission of the second signal needs to occupy the first guaranteed power corresponding to the first cell group, the transmission power of the first signal is selectively reduced, and the scheme can realize the transmission of the signal which can preferentially ensure the guaranteed power corresponding to other cell groups, thereby improving the system performance.

For the first or second case, two different implementation methods of the signal capable of occupying the guaranteed power corresponding to the other cell group and the signal capable of occupying the guaranteed power by the other cell group signal are described below.

The first implementation method is that the signal which can occupy the guaranteed power corresponding to other cell groups is the signal corresponding to the high priority service, and the signal which can occupy the guaranteed power by the signals of other cell groups is the signal corresponding to the low priority service. The signal corresponding to the high priority service may be referred to as a high priority signal, and the signal corresponding to the low priority service may be referred to as a low priority signal.

As an implementation, the high priority traffic here may be, for example, URLLC traffic, the low priority traffic is non-URLLC traffic, non-URLLC traffic including, but not limited to, enhanced mobile broadband (enhanced Mobile Broadband, eMBB) traffic, machine type communication (Machine Type Communication, MTC) traffic.

As another implementation, the high priority service may be a Vehicle-to-evaluation (V2X) service, and the low priority service is a non-V2X service, where the non-V2X service includes, but is not limited to, an eMBB service, and an MTC service.

For the signals corresponding to the service of the terminal equipment, at least two dividing methods exist:

the method 1 comprises the steps that the service of the terminal equipment is divided into two grades, a signal corresponding to the service with the high grade is a signal with high priority, and a signal corresponding to the service with the low grade is a signal with low priority.

The method 2, the business of the terminal equipment is divided into L grades, L is an integer greater than 2, the signals corresponding to the business greater than or equal to the first grade in the L grades are high-priority signals, the signals corresponding to the business less than the first grade are low-priority signals, and the first grade is one grade except the maximum grade and the minimum grade in the L grades. Wherein the first level may be protocol predefined or network device configured.

Taking l=10 as an example, the service classes of the terminal device are divided 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, thus:

The low priority signal includes: a signal corresponding to a service of level 1, a signal corresponding to a service of level 2, a signal corresponding to a service of level 3, a signal corresponding to a service of level 4, and a signal corresponding to a service of level 5;

the high priority signal includes: a signal corresponding to a class 6 service, a signal corresponding to a class 7 service, a signal corresponding to a class 8 service, a signal corresponding to a class 9 service, a signal corresponding to a class 10 service.

Wherein, level 1, level 2, level 3, level 4, level 5 may be a further division for non-URLLC traffic, for example, non-URLLC traffic is an eMBB traffic, and then the eMBB traffic may be further divided into 5 levels, and level 1, level 2, level 3, level 4, level 5 correspond to eMBB traffic 1, eMBB traffic 2, eMBB traffic 3, eMBB traffic 4, eMBB traffic 5, respectively.

The grades 6, 7, 8, 9 and 10 may be further divided for the ullc service, for example, the ullc service may be further divided into 5 grades, and the grades 6, 7, 8, 9 and 10 correspond to the ullc service 1, the ullc service 2, the ullc service 3, the ullc service 4 and the ullc service 5, respectively.

And when the difference value between the service level corresponding to the second signal and the service level corresponding to the first signal is greater than or equal to a first threshold value, the second signal is a signal which can occupy the guaranteed power corresponding to other cell groups, and the first signal is a signal which can occupy the guaranteed power by the signals of other cell groups. Or it is understood that the second signal is a signal capable of occupying the guaranteed power corresponding to the first signal, and the first signal is a signal capable of being occupied by the second signal.

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

Take the example of the method 2 implementing the first method as an example. For example, the first threshold is 3, the grade of service corresponding to the second signal is grade 6, the grade of service corresponding to the first signal is grade 2, and since 6-2>3, the second signal is determined to be a signal capable of occupying guaranteed power corresponding to other cell groups, and the first signal is determined to be a signal capable of occupying guaranteed power by other cell group signals.

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

Based on the scheme, when the difference between the service level corresponding to the second signal and the service level corresponding to the first signal is greater than or equal to a first threshold, the terminal device preferentially guarantees the transmission of the second signal, namely, 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, the transmission power of the first signal is selectively reduced, and the scheme can realize preferentially guaranteeing the transmission of signals which can occupy the guaranteed power corresponding to other cell groups, so that the system performance can be improved.

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

For the implementation method one or the implementation method two, in one implementation method, before the step 202 or the step 204, an indication information may be further received from a second network device associated with the second cell group, where the indication information is used to indicate that the second signal is a signal capable of occupying guaranteed power corresponding to other cell groups in the second cell group or indicate that the second signal is a signal capable of not occupying guaranteed power corresponding to other cell groups in the second cell group. As a specific example, the indication information may be carried in a third field in the physical downlink control channel, where the value of the third field includes third indication information (also referred to as a first state) and sixth indication information (also referred to as a 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 which can occupy the guaranteed power corresponding to other cell groups in the second cell group. When the value of the third field is the sixth indication information, the third field indicates that the second signal is a signal which cannot occupy the guaranteed power corresponding to other cell groups in the second cell group. The third field here illustratively comprises 1 bit which takes a value of 1 for the first state and 0 for the second state.

As shown in fig. 4, which is one possible exemplary block diagram of a signaling device according to the present application, the device 400 may exist in software or hardware. The apparatus 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 transmitting unit. The processing unit 402 is configured to control and manage the operations of the apparatus 400. The communication unit 401 is used to support communication of the apparatus 400 with other network entities.

The processing unit 402 may be a processor or controller, such as a general purpose central processing unit (central processing unit, CPU), general purpose processor, digital signal processing (digital signal processing, DSP), application specific integrated circuit (application specific integrated circuits, ASIC), field programmable gate array (field programmable gate array, FPGA) or other programmable logic device, transistor logic device, hardware components, or any combination thereof. Which may implement or perform the various exemplary logic blocks, modules, and circuits described in connection with this disclosure. The processor may also be a combination that performs the function of a computation, e.g., including one or more microprocessors, a combination of a DSP and a microprocessor, and so forth. The communication unit 401 is an interface circuit of the apparatus for receiving signals from other apparatuses. For example, when the device is implemented in 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 transmitting signals to other chips or devices.

The apparatus 400 may be the terminal device in any of the above embodiments, and may also be a chip for the terminal device. For example, when the apparatus 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. Alternatively, the transceiver may include radio frequency circuitry. For example, when the apparatus 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, a circuit, or the like. The processing unit 402 may execute computer-executable instructions stored in a memory unit, optionally a memory unit within the chip, such as a register, a cache, etc., and may also be a memory unit within the terminal device that is external to the chip, such as a read-only memory (ROM) or other type of static storage device, a random access memory (random access memory, RAM), etc., that may store static information and instructions.

In a first embodiment, the apparatus 400 is a terminal device, and the processing unit 402 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, and a sum of the first transmission power and the second transmission power is greater than a maximum transmission power of the 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; the communication unit 401 is configured to transmit the first signal with the third transmission power in the first time unit on the first carrier, and transmit the second signal with the second transmission power in the second time unit on the second carrier.

In a second embodiment, the apparatus 400 is a terminal device, and the processing unit 402 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, and a sum of the first transmission power and the second transmission power is greater than a maximum transmission power of the 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;

the processing unit 402 is further configured to determine that, when the second signal is a signal that can occupy guaranteed power corresponding to another cell group in the second cell group and the first signal is a signal that can occupy guaranteed power by another cell group signal in the first cell group, the transmission power of the first signal is a third transmission power, where a sum of the third transmission power and the second transmission power is not greater than the maximum transmission power; the communication unit 401 is configured to transmit the first signal with the third transmission power in the first time unit on the first carrier, and transmit the second signal with the second transmission power in the second time unit on the second carrier; or alternatively

The processing unit 402 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 401 is configured to transmit the first signal with the fourth transmission power in the first time unit on the first carrier, and transmit the second signal with the fifth transmission power in the second time unit on the second carrier.

Based on the first embodiment described above or the second embodiment described above:

In a possible implementation method, the communication unit 401 is further configured to receive first indication information, where the first indication information indicates a priority of the second signal, before the determining, by the processing unit 402, that the transmission power of the first signal is the third transmission power; the processing unit 402 is further configured to determine, according to the priority, that the second signal is a signal capable of occupying guaranteed power corresponding to other cell groups.

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

It can be understood that, in the specific implementation process and the corresponding beneficial effects when the device is used in the foregoing signal transmission method, reference may be made to the description related to the foregoing method embodiment, which is not repeated herein.

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

For example, the processor 502 in fig. 5 may cause the terminal device to execute the method in the above-described method embodiment by calling a computer-executable instruction stored in the memory 501.

In particular, the functions/implementation procedures of the communication unit 401 and the processing unit 402 in fig. 4 may be implemented by the processor 502 in fig. 5 calling computer executing instructions stored in the memory 501. Alternatively, the functions/implementation of the processing unit 402 in fig. 4 may be implemented by the processor 502 in fig. 5 calling computer-executable instructions stored in the memory 501, and the functions/implementation of the communication unit 401 in fig. 4 may be implemented by the communication interface 503 in fig. 5.

Alternatively, when the apparatus 400 is a chip or a circuit, the functions/implementation procedures of the communication unit 401 may also be implemented by pins or circuits or the like.

As shown in fig. 5, a schematic diagram of another signal transmission apparatus provided in the present application may be a terminal device in the foregoing embodiment. The apparatus 500 includes: processor 502, communication interface 503, memory 501. Optionally, the apparatus 500 may further comprise a communication line 504. Wherein the communication interface 503, the processor 502 and the memory 501 may be connected to each other via a communication line 504; the communication line 504 may be a peripheral component interconnect standard (peripheral component interconnect, PCI) bus or an extended industry standard architecture (extended industry standard architecture, EISA) bus, among others. The communication lines 504 may be divided into address buses, data buses, control buses, etc. For ease of illustration, only one thick line is shown in fig. 5, but not only one bus or one type of bus.

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

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

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

The memory 501 is used for storing computer-executable instructions for executing the embodiments of the present application, and is controlled by the processor 502 to execute the instructions. The processor 502 is configured to execute computer-executable instructions stored in the memory 501, thereby implementing the signaling method provided in the foregoing embodiments of the present application.

Alternatively, the computer-executable instructions in the embodiments of the present application may be referred to as application program codes, which are not specifically limited in the embodiments of the present application.

Those of ordinary skill in the art will appreciate that: the first, second, etc. numbers referred to in this application are merely for convenience of description and are not intended to limit the scope of the embodiments of the present application, but also to indicate the sequence. "and/or", describes an association relationship of an association object, and indicates that there may be three relationships, for example, a and/or B, and may indicate: a exists alone, A and B exist together, and B exists alone. The character "/" generally indicates that the context-dependent object is an "or" relationship. "at least one" means one or more. At least two means two or more. "at least one," "any one," or the like, refers to any combination of these items, including any combination of single item(s) or plural items(s). For example, at least one of a, b, or c (species ) may represent: a, b, c, a-b, a-c, b-c, or a-b-c, wherein a, b, c may be single or plural. "plurality" means two or more, and the like. Furthermore, for elements (elements) that appear in the singular forms "a," "an," and "the," it does not mean "one or only one" unless the context clearly dictates otherwise. For example, "a device" means a device for one or more of such devices.

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

The various illustrative logical blocks and circuits described in the embodiments of the present application may be implemented or performed with 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, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. A general purpose processor may be a microprocessor, but in the alternative, the general purpose processor may be any conventional processor, controller, microcontroller, or state machine. A processor may also be implemented as a combination of computing devices, e.g., a digital signal processor and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a digital signal processor core, or any other similar configuration.

The steps of a method or algorithm described in the embodiments of the present application may be embodied directly in hardware, in a software element executed by a processor, or in a combination of the two. The software elements may be stored in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art. In an example, a storage medium may be coupled to the processor such that the processor can read information from, and write information to, the storage medium. In the alternative, the storage medium may be integral to the processor. The processor and the storage medium may reside in an ASIC.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

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

Claims

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,

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

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

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.